Untitled - Hoshizaki America, Inc.

KM Sequence of Operation 

“A” & “B” Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 

“C” & “Alpine” Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 

KM Check Out Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 

10 Minute Check Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 

Reservior Flush System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 

Componet Checks 

Float Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 

Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 

Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 

Bin Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 

Cleaning/Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 

KM Production Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 

Water and Refrigeration Circuit Reference Chart ......... 32 

KM Performance Data (R-502 Units) 

KM-250B-B ......................................................... 47 

KM-250B_C ......................................................... 48 

KM-250M-B ........................................................ 49 

KM-451 D ............................................................. 50 

KM-452D ............................................................. 51 

KM-450M-B ........................................................ 52 

KM-601 D ............................................................. 53 

KM-631 D ............................................................. 54 

KM-632D ............................................................. 55 

KM-630M-B ........................................................ 56 

KM-800M-B ........................................................ 57 

KM-l 201 D ........................................................... 58 

KM-l 200M-B ...................................................... 59 

KM-l 200S_B ....................................................... 60 

KM-l 600M-B ...................................................... 61 

KM-l 600M-B3 .................................................... 62 

KM-l 600S_B ....................................................... 63 

KM-l 600S_B3 ..................................................... 64 

KM-2000S_B3 ..................................................... 65 

NOTE: Performance Data Chart includes the following: 

A. Model 

B. Supply Voltage 

C. Total Amperage (Compressor RLA*) 

D. Ice production per cycle 

E. Water cooled condenser water consumption 

. Production 24 hours 

ii ~ g/27/96

G. Freeze cycle time 

H. Harvest cycle time 

I. High side pressure 

J. Suction pressure 

*Amperage taken 5 minutes into freeze with 

air temperature 104°F and water temperature 80°F. 

KM Wiring Diagram Reference Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 

Remote Condenser Data ,............................................m 69 

Flake lr/DCM 

Installation - General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 

Componant Technical Data .......................................... 99 

Gear Motor Safeties ............................................ 99 

Auger Bearings ................................................... 99 

Bearing Inspection .................................. .......... 100 

Auger Inspection / Bearing Replacement.. ....... 100 

Flaker Sequence of Operation 

Flaker Periodic Flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 

DCM Sequence of Operation ........................... .......... 103 

F/DCM Production Check ................................. .......... 103 

Water and Refrigeration Circuit 

Reference Chart . . ..,........................................... 104 

Flaker Performance Data 

F-251 B ............................................................... 115 

F-251 U, F-250B ................................................. 116 

F-441 U, F-440B ................................................. 117 

F-450B ............................................................... 118 

F-450B w/ Cubelet Kit ............................. .......... 119 

F-650M .............................................................. 120 

F-650M w/ Cubelet Kit ............................ .......... 121 

F-l OOOM ............................................................ 122 

F-l IOIA ............................................................. 123 

F-l 100 w/ Cubelet Kit ............................ .......... 124 

F-l 1 OOM ............................................................ 125 

F-2000M ............................................................ 126 

F-2000M3 .......................................................... 127 

. . . 

III ~ g/27/96

DCM Performance Data 

DCM-231 U, DCM241 U ...................................... 128 

DCM-240 BAA, BAB ......................................... 128 

DCM-451 U, DCM-450B ..................................... 129 

DCM-701 U, DCM-700B ..................................... 130 

DCM Wiring Diagram Reference Chart . . . . . . . . . . . . . . . . . . . . . . 131 

Flaker Wiring Diagram Referance Chart . . . . . . . . . . . . . . . . . . . . 132 

iv ~ g/27/96

IDENTIFICATION CODE 

KM - 12 

UNITTYPE -r - 

KM - Crescent Cuber 

F- Flaker 

DCM - Dispenser Cubelet Maker 

DB - Dispenser Bin 

B- Bin 

DM - Countertop Dispenser 

PRODUCTION 

Approximate production/24 Hours 

70°F Air/SO”F Water 

UNIT STYLE 

M/D/A- Modular 

S- Stackable 

B- Self contained with bin 

CONDENSER STYLE 

AN- Air cooled 

W- Water cooled 

R/S - Remote air cooled 

GENERATION 

IO F 

- - 

Model designation 

U - US Model Designation (First Production) 

. - I 

The model number, serial number, electrical specifications 

and refrigerant data are found on the unit name plate. (See 

name plate) 

-I- g/27/96

See the Nameplate for electrical and refrigeration specifica- 

tions.This Nameplate is located on the upper right hand side 

of rear panel. Since this Nameplate is located on the rear 

panel of the icemaker, it cannot be read when the back of the 

icemaker is against a wall or against another piece of kitchen 

equipment. Therefore, the necessary electrical and refrig- 

eration information is also on the rating label included on 

later model units. This label can be easily seen by removing 

only the front panel of the icemaker. We reserve the right to 

make changes in specifications and design without prior no- 

tice. (Nameplate may vary slightly with older models) 

-2p g/27/96

REGISTRATION- 

Two warranty registration cards are supplied with the 

equipment. They must be completed and sent in to initiate 

warranty. The warranty begins on the date of installation if 

registration procedures are followed. If registration is not 

completed, the warranty date will be the date of sale or 

date of shipment from the factory, respectively. 

WARRANTY COVERAGE- 

The warranty will cover defects in material or workmanship 

under normal and proper use and maintenance service as 

specified by Hoshizaki. Coverage for parts and labor is 

limited to the repair or replacement of parts or assemblies 

that in Hoshizaki’s opinion are defective. 

WARRANTY STATUS- 

The warranty coverage for R-502 / R-l 2 equipment varies 

depending on the model and date of manufacture. Refer to 

the warranty statement shipped with the unit to establish 

the warranty coverage for that model. 

If you need warranty status for later model units, contact 

the Care Department with complete model and serial 

number. We will provide you with the installation date and 

warranty status , if available. You will find the model and 

serial number on the nameplate located on the rear of the 

unit. Early model units will have the serial number 

stamped in ink in the compressor compartment. 

See Warranty Statement supplied with the unit for details. 

Warranty valid in United States, Canada, Mexico, Puerto 

Rico, and U. S. Virgin Islands. 

Contact factory 

or possessions. 

for warranty in other countries, territories, 

-3- g/27/96

KM INSTALLATION 

GENERAL - 

The ice machine is not intended for outdoor use. 

OPERATING CONDITIONS - ALL MODELS 

ITEM 

Voltage Range 

MODEL RANGE 

115V units 104- 127V. 

208-230 V units 187-264V. 

Ambient Temperature All 45 - 100 Deg. F. 

Remote Condenser Early -20 - 110 Deg. F. 

Later -20 - 122 Deg F. 

Water SupplyTemperature All 45 - 90 Deg. F. 

Water Supply Pressure Early 7 -113 PSIG 

Later 10 - 113 PSIG 

Allow 6” clearance at rear, sides, and top for proper air 

circulation and ease of maintenance or service. 20” top 

clearance for F/DCM. 

PLUMBING REQUIREMENTS - 

Water Supply: 

On KM units the water supply line size is critical due to the 

water assisted harvest and the use of a ported inlet water 

valve solenoid. 

MODEL Line Size 

KM-250 - KM-800 318” OD 

KM-1200 - KM-2000 l/2” OD 

All F/DCM 318” OD 

*Water cooled condenser units require 

supplies sized as per list above. 

Fittinq Size 

l/2” FPT 

l/2” FPT 

l/2” FPT 

two separate 

Drain: 

MODEL Line Size Fittinq Size 

All Bins 3/4” OD 3/4” FPT 

Early KM’s 3/4” OD I” FPT 

Later KM’s 3/4” OD 3/4” FPT 

**FIakers 3/4” OD 3/4” FPT* 

**DCM 3/4” OD 3/4” FPT* 

*Some models have 2 drain outlets. 

** Some early models had insert type drain fitings 

-4- 9127196

Hoshizaki recommends that the ice machine drain and bin 

drain be piped separately to the drain connection point 

allowing ii4” per foot fall. 

CONDENSATE DRAIN - 

The condensate drain is generally connected to the ice 

machine drain for simplicity. It can be piped separately to 

the drain exit if desired. 

A 6” vent tee is recommended as per drawing: 

Reservoir / 

Drain 

FLOW RATES - 

Condensate 

Drain 

The minimum flow rate requirements for Hoshizaki ice 

maker units are as follows: 

KM-250/AI I Flakers 1.05 GPM 

KM-451 /452/450 1.58 GPM 

KM-601/631/630/800/Ail DCM’s 2.11 GPM 

KM-l 200/l 600 3.96 GPM 

KM-1201/2000 4.23 GPM 

Use this information when sizing a filter system for the ice 

machine application. 

NOTE: A good rule of thumb is to utilize a 3 GPM flow rate 

filter for KM-250 - 800 and a 5 GPM flow rate filter for KM- 

1200 or larger. 

-5- g/27/96

ELECTRICAL CONNECTIONS - 

115V. 

(2 wire 

w/gnd) 

115VOLT/l PHASE 

(Ground 

screw not 

used on early 

models) 

208=23OVOLT/l PHASE 

208-23OV/l Phase units require a dedicated neutral due to 

the use of 115V components. 

208-230V. 

3 phase 

(3 wire 

w/gnd) 

The dedicated 

neutral 

requires an 

insulated 

conductor 

which runs 

directly to the 

panel. 

If high leg is present connect to black wire 

- 

208-230 VOLT/3 PHASE 

REMOTE CONDENSER CONNECTIONS 

Fan 

Control 

Circut 

From 

Unit 

115V. 

Neutral 

GND+@ 

(Remote 

wiring color 

varies on 

early 

models) 

9127196

REMOTE APPLICATIONS 

CONDENSER CHART 

CONDENSER MODEL MODEL NUMBERS 

S-0466 KM-601/631 DSU 

s-0454 KM-l 201 DSU 

S-0387 F-l IOIASU 

U RC-4A KM-452DSU, KM-450MRB 

U RC-GA/B KM-632DSU, KM-630MRB, 

F-l 000/l 1 OOMRB 

URC-12B/C KM-800/l 200MRB, 

KM1 200SRB 

U RC-20C KM-l 600/2000MRB, 

KM1 600/2OOOSRB 

F-2000MRB 

When installing a remote application the unit/condenser 

combination must match with the above chart. A non-OEM 

multi-pass condenser can be used with prior written factory 

approval. 

REMOTE LINES- 

Hoshizaki has 3 precharged line set lengths. 20 foot, 35 

foot, and 55 foot sets are available. The line sets are 

available in different line sizes for different models. 

LINE SET IDENTIFICATION CODE 

R502 - 35 6 10 

Refrigerant m 

Length In Feet 

Liquid Line Size in 16th’s 

Discharge Line Size in 16th’s 

LINE SET APPLICATIONS 

MODELS 

KM-452/450/631/ 

LINE SET LL (SIZE] DL 

632/630 R502--46-2 l/4” OD 3/8” OD 

F-l 000/l 100 R502--46-2 l/4” OD 3/8” OD 

KM-l 201 R502--66-2 3/8” OD 3/8” OD 

KM-800/l 200 R502--68-2 3/8” OD l/2” OD 

KM-l 600/2000 R502--610 3/8” OD 5/8” OD 

-7- 9127196

Remote Condenser Installation on Roof 

For best 

performance 

allow 24” 

clearance for 

air circulation 

For best perfor- 

mance the Remote 

Condenser should 

not be more then 

33’ above the 

icemaker or more 

then 10’ below it. 

These distances 

are measured from 

or Connection 

.......................................... 

......................................... 

-8- 9127196

LINE SET INSTALLATION 

A universal line set adapter kit, part number OS-QUICK, is 

available if you need to field engineer your line set. Both 

lines should be insulated separately the entire length of 

run. 

The refrigerant charge for a new unit is distributed between 

the unit head and the remote condenser. The line set has a 

minimal holding charge of 15 to 30 psig refrigerant vapor. 

If you need to field engineer your line set or shorten/ 

lengthen a precharged line set you can do so by following 

these steps: 

1. Using the OS-QUICK kit, braze the line set connec- 

tions. (If you shorten or lengthen a precharged line 

set, recover the holding charge, cut or lengthen and 

braze the connections.) 

2. Pressurize the lines and leak check all braze joints. 

3. Evacuate the lines through the service 

Aeroquip quick connect fittings. 

ports on the 

4. Charge both lines with 15 to 30 psig R-22 vapor. 

To make Aeroquip connection to the unit head and 

condenser: 

1. Lubricate the th reads and O-ring with clean 

refrigerant oil. 

2. Tighten the female connector until it bottoms out. 

3. Then turn an additional l/4 turn to assure a good 

brass to brass seal. Leak check the joints with soap 

bubbles or an electronic leak detector. 

-9- g/27/96

SYSTEM CHARGE 

The ice machine head and remote condenser are shipped 

with enough refrigerant charge for up to 66 feet of line set 

length. The maximum line set length is 100 equivalent feet 

from the head to the condenser. 

For applications longer than 66 ft. up to the maximum 100 

ft. length, additional refrigerant must be added. For units 

utilizing l/4” L.L. and 3/8” D.L., the line size should be 

increased to 3/8”L.L. and U2”D.L. for the entire length of 

the run. Add 21 ounces plus l/2 oz. per foot over 66 feet. 

For units utilizing 3/8”L.L., add l/2 oz. per foot over 66 feet. 

NOTE: 

(1) 

(2) 

(3) 

(4) 

(5) 

Recommended line sizes are same as listed in the 

line set application chart. (Page 7) 

Always check the unit nameplate for the 

correct refrigerant type. 

If refrigerant is added due to extended line set 

length, mark the correct total charge on the unit 

nameplate for future reference. 

When routing and installing remote lines, always 

use standard refrigerant piping practices. 

Hoshizaki recommends eliminating any excess 

loops in a pre-charged line set application before 

making the unit connections. This will eliminate oil 

traps and possible crimps in the excess tubing. 

The total system charge is critical for proper operation 

according to Hoshizaki specification. Always weigh in the 

proper charge per the following charge chart. (Remote 

units show standard charge good for up to 66 feet.) 

~ IO ~ g/27/96

MODEL 

HOSHIZAKI CUBER 

REFRIGERANT CHARGE CHART 

KM-250 BAB 

BWB 

KM-250 BAC 

BWC 

KM-250 MAB 

MWB 

KM-451 DU 

DWU 

KM-452 DU 

DWU 

DSU 

KM-450 MAB 

MWB 

MRB 

KM-601 DU 

DWU 

KM-632 DU 

DWU 

DSU 

KM-630 MAB 

MWB 

MRB 

KM-800 MAB 

MWB 

MRB 

KM-1201 DU 

DWU 

DSU 

KM-l 200 MAB 

MWB 

MRB 

KM1200 SAB 

SWB 

SRB 

KM-l 600 M/SWB 

M/SRB 

KM-2000 M/SWB 

M/SRB 

TOTAL CHARGE REFRIGERANT 

1 lb. 5 oz. R-502 

13.5 oz. LL 

13.8 oz. LL 

13.4 oz. LL 

1 lb. 13.5 oz. LL 

1 lb. 12.5 oz. LL 

1 lb. 9 oz. LL 


1 lb. 10 oz. LL 


5 Ibs. 5 oz. LL 

1 lb. 10 oz. LL 














4 Ibs. LL 





11 Ibs. 11 oz. LL 


2 Ibs. LL 



17 Ibs. 10 oz. LL 


17 Ibs. 10 oz. LL 

g/27/96

MODEL 

F-251 B 

F-251 U 

F-250 BAA 

F-441 U 

F-440 BAA 

F-450 BAB 

BWB 

F-650 MAB 

MWB 

MRB 

F-l 000 MAB 

MWB 

MRB 

F-1101 AU 

AWU 

ASU 

F-l 100 MAB 

MWB 

MRB 

F-2000 MWB 

MRB 

DCM-231 U 

DCM-241 U 

DCM-451 U 

HOSHIZAKI FLAKERWDCM’S 

REFRIGERANT CHARGE CHART 

TOTAL CHARGE 

6.3 oz. 

7.76 oz. 

7.76 oz. 

13.4 oz. 

13.4 oz. 

1 lb. 

12.70~. 

1 lb. 9 oz. 

12.7 oz. 

4 Ibs. 

1 Ibs. 

1 lb. 

6 Ibs. 

1 Ibs. 

1 Ibs. 

5 Ibs. 

1 lb. 

1 lb. 

5 Ibs. 

1 lb. 

15 Ibs. 

14 oz. 

10 oz. 

12 oz. 

2 oz. 

1 oz. 

8 oz. 

loz. 

8 oz. 

1 loz. 

10 oz. 

7.5 oz. 

8.8 oz. 

14.1 oz. 

REFRIGERANT 

R-12 

R-12 

R-12 

R-12 

R-12 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-502 

R-12 

R-12 

R-12 

DCM-450 BAAIBAB 14.1 oz. R-12 

DCM-450 BWA/BWB 10.6 oz. R-12 

DCM-701 U 1 lb. 12.2 oz. R-502 

DCM-701 WU 1 lb. 6.9 oz. R-502 

DCM-700 BAA/BAB 1 lb. 12.2 oz. R-502 

DCM-700 BWA/BWB 1 lb. 6.9 oz. R-502 

~ 12 ~ g/27/96

HEAT LOAD 

The heat of rejection information listed below by model 

number should be used for sizing air conditioning equip- 

ment or for sizing a water cooled cooling tower application. 

MODEL 

KM-250B 

KM-250M 

KM-451 D 

KM-452D 

KM-450M 

KM-601 / 631 D 

KM-632D 

KM-630M 

KM-800M 

KM-l 201 D 

KM-l 200M 

KM-l 200s 

KM-l 600M/S 

KM-2000M/S 

MODEL 

F-251 B 

F-251 U 

F-250 B-A 

F-441 U 

F-440 B-A 

F-450 B-B 

F-650 M-B 

F-l 000 M-B 

F-1101 A- 

F-l 100 M-A 

F-2000 M-B 

DCM-231/241 U 

DCM-240 B 

DCM-451 U 

DCM-450 B 

DCM-701 U 

DCM-700 B 

TOTAL HEAT REJECTION 

AIR WATER COOLED 

COOLED (CONDENSER ONLY] 

5443 BTU/h 5245 BTU/h 

5450 5250 

10319 8500 

9220 8047 

9250 6160 

11509 9520 

12713 11817 

12713 10985 

16960 12700 

20300 16500 

19500 17000 

20550 17370 

-------- 24393 

-------- 28120 

TOTAL HEAT REJECTION 

AIR WATER COOLED 

COOLED (CONDENSER ONLY] 

3170 BTU/h ------ BTU/h 

2614 ------ 

3980 ------ 

6030 ------ 

6030 ------ 

5000 2860 

6830 5546 

8480 6700 

10600 8990 

10800 9500 

--- 18100 

3040 ------ 

3980 ------ 

5680 5160 

5680 5160 

8440 6620 

8440 6690 

Figures shown are at 90” F air temp. 70” F water temp. 

Allow for a pressure drop of 7 psi across the water cooled 

condenser. 

~ 13 ~ g/27/96

KM-451/601/631/1201 First Generation 

(unit starts in harvest) 

The first generation of KM cubers used an “A” style control 

board. This board has a variable resistor in the upper right 

hand corner marked VRI. To adjust the defrost completion 

timer and extend the harvest period, turn VRI “CW”. The 

range extends from 1 to 4 minutes. Fully “CCW” provides 

1 minute on the completion timer. Extending the harvest 

will increase the flush for more cleaning. The factory 

setting is 1 minute (fully CCW). 

KM-451/ 631/1201 Second Generation 

(unit starts in harvest) 

The control board on the second generation of KM cubers 

was changed to a “B” style. This board uses two dip 

switches to adjust the defrost completion timer. A dip 

switch setting chart is printed on the board, beside the 

switches. Adjust the two switches to extend the harvest 

period from 1 to 4 minutes. This board also has a 60 

minute back-up freeze completion timer and a high 

temperature safety included. The factory setting is 1 

minute. The “B” style board is a direct replacement for the 

“A” board. 

KM-452/632/ early M & S units Third Generation 

(unit starts in 1 minute fill cycle and has every cycle pump-out) 

The third generation control board for the KM cubers is a 

“C” style board. This board has 4 dip switches. Number 1 

& 2 adjust the defrost completion timer from 1 to 3 minutes. 

Number 3 & 4 adjust the length of pump-out and should 

remain in the factory position. The pump-out will occur 

after every harvest cycle on these units. For the factory 

setting, see the dip switch setting chart for Alpine boards. 

The “C” board replacement is the Universal Alpine # 

2UO139-01. This is a direct replacement. Install the 

universal board and adjust the 8 dip switches by model per 

the dip switch setting chart. “C” board switches 1 through 4 

are the same as on the Alpine board. 

KM later model M & S units Forth Generation 

(unit starts in 1 minute fill cycle and has every cycle pump-out) 

All KM Units are now manufactured with the original Alpine 

control board part # 2UO127-01 (subs to # SAOOOI). This 

board has 8 dip switches and provides the ability to adjust 

~ 14 ~ g/27/96

for pump-out to occur every 1, 2, 5, or 10 cycles. The 

setting guide below explains the Original and Universal 

Alpine dip switches. 

Note: The Universal Alpine # 2UOO139-01 can be used to 

replace the Original Alpine # 2UO127-01 if a slight 

modification is made. Follow the instructions supplied 

with the replacement board which instruct you to cut the 

black jumped (R065) for this application. 

DIP SWITCH SE 

ADJUSTMENTS DIP 

DEFROST 

TIMER 

ADJUSTMENT 

PUMP OUT 3 

LENGTH 4 

PERIODIC 

PUMP OUT 

FREQUENCY 

0 1 0 1 

0 0 1 1 

seconds 10 10 10 20 

5 0 1 0 1 

6 0 0 1 1 

TEST 8 OFF FOR TEST 

Switch Code =ON O=Off 

glF II2 II5 l/IO 1 

I/VSTRUCTIO/VS: 

TO IMPROVE BUILT-IN CLEANING Adjust switches 

per this guide. Switches 1 & 2 provide for longer flush 

at the end of harvest. Switches 5 & 6 provide 

maximum cleaning at every cycle 1 / 1 setting. The 1 / 

10 setting will pump-out less to conserve water (less 

cleaning). 

DO NOT ADJUST SWITCHES 3,4,7, & 8 FROM 

THE FACTORY SETTINGS ! 

DO NOT MAKE CONNECTIONTOTHE RED K-4 

TERMINAL ! 

The replacement board should be adjusted to the 

factory settings unless local conditions require 

alternate settings to improve cleaning. 

~ 15 ~ g/27/96

g/27/96 

000000000 

ooooo---- 

Orn 

3 

> 

ooo-o---ooo-o---- 

-I 

7 

-7-700000 

-7-700000 

0 

0 

000000000 

000000000

- 17 

I I g/27/96

9127196

WATER COOLED 

HEAD PRESSURE CONTROLS 

An adjustable (Pressure Modulated) water regulating valve 

is installed on the water cooled condenser outlet. Adjust 

the valve per this diagram to reflect the outlet temperature 

in the chart below. 

ADJUSTMENT SCREW Adjust: 

TOP VIEW 

CW - for higher 

pressure and outlet 

water temperature, 

lower water flow. 

CCW - for lower 

pressure and outlet 

water temperature, 

higher water flow. 

CONDENSER OUTLET WATER TEMPERATURE RANGE 

Model Ranqe (F”) Model Ranqe (F”) 

KM-250BWB / 100 - 104 KM-1201DWU 110 - 115 

BWC / MWC 

KM-451 DWU , 100 - 104 KM-1200 MWB 100 - 104 

KM-450 MWB 

KM-601/631/ 100 - 104 KM-1200 SWB 108 - 113 

632DWU 

KM-630 MWB 100 - 104 KM-1600 MWB 104 - 115 

KM-800 MWB 102 - 108 KM-1600 SWB 104 - 115 

KM-2000 SWB 104 - 115 All Flaker / DCM 100 - 104 

REMOTE 

All remote condenser units use a condenser pressure 

regulator ( CPR or Headmaster ) to maintain adequate 

head pressure in low ambient conditions. This valve is 

located in the remote condenser unit. The replacement 

valve is a Sporlan 190 psi LAC-4 valve Hoshizaki part 

number 440918-01. This valve can be used on any remote 

R-502 unit. 

The symptoms of a bad headmaster are similar to an 

undercharged unit. To diagnose a headmaster, add 

~ 19 ~ g/27/96

additional refrigerant in 2 lb. increments and watch the 

pressures. If the pressures begin to look normal, the unit 

was undercharged. If not, a bad headmaster is a possibil- 

ity. Check to see if the valve is stuck open or closed by 

conducting temperature test at the outlet of the headmas- 

ter. 

Always use safe refrigeration practices 

valve and protect from overheating. 

HIGH PRESSURE SAFETY SWITCH - 

when removing the 

An automatic reset high pressure safety switch is used on 

some Flakers and DCM’s, and on all KM series units. The 

pressure switch settings are as follows: 

MODELS PART NUMBER CUT OUT CUT IN 

(psig) (psig) 

F-441U , DCM-451U DCM-450B 

3110069-03 228 +I- 21.3 185 +I- 21.3 

KM-451 D , 

KM-l 201 D 

-B/M/S 

KM-6OIU , KM-63 

3110069-01 

3110069-04 

AIR COOLED 

43344 I-05 

1 D , DCM-70 

356 +I- 21.3 

356 +I- 21.3 

& REMOTE 

384 +I- 21.3 

IU 

, DCM-700B 

256 +I- 21.3 

256 +I- 21.3 

284 +I- 21.3 

KM-B / M / S WATER COOLED, F-450B , F-650M , 

FIOOOM , F-2000M 

433441-01 355.6 +I- 21.3 256 +I- 21.3 

F-IIOIA , F-l 1 OOM 

4256 79-01 356 +I- 21.3 296 +/- 21.3 

BIN CONTROL 

KM series units use a thermostatic bin control. The 

capillary bulb is mounted in the ice drop zone or on a drop 

down bracket which extends into the bin cavity. The drop 

down bracket should be secured to the unit base and plug 

connection must be made before the unit will operate. 

When replacing a thermostatic bin control, be sure to use 

the ABS mounting hardware supplied with the new control. 

~ 20 ~ g/27/96

Check the operation of the bin control by holding ice 

against the thermostatic bulb with the unit running. The 

unit should shut down within 6 to 10 seconds. Adjust the 

control “CCW ” for a faster shut down. If the bin control 

bulb is not contacting the ice pyramid, a bracket extention 

may be needed. 

Flaker / DCM units use mechanical bin controls. A paddle 

pivots on a hinge pin to operate either a microswitch or 

magnetic proximity switch. For proper operation, assure 

that the paddle swings freely. 

CAPACITORS 

See wiring diagram reference chart for capacitor ratings. 

HOSHIZAKI KM CUBER SEQUENCE 

OF OPERATION FOR “A” & “B” 

CONTROL BOARD UNITS 

1. Harvest Cycle 

The unit always starts in the ha ,rvest cycle. When the 

power switch is set to the “ICE” position and the bin 

control is closed (calling for ice) the harvest cycle 

begins. The compressor and remote fan motor starts, 

the hot gas valve opens, and the inlet water valve(s) 

opens. This is a hot gas defrost with water assist. The 

water flows through the center of the evaporator, picks 

up heat from the serpentine and transfers it to the 

stainless freezing surface. When the suction line 

temperature reaches 48°F (43°F on KM-120 1) the 

thermistor which is mounted to the suction line signals 

the board to start the defrost completion timer. This 

timer is factory set at 1 minute, however, it can be 

adjusted from 1 to 4 minutes. 

The total harvest time will be the time it takes for the 

evaporator to reach 48°F or 43°F plus the defrost 

completion timer setting. Total harvest time will be 

longer in the winter due to the colder incoming water 

temperature. The inlet water valve will be open a 

maximum time of 3 minutes on KM-451/601/631 water 

cooled models and 4 minutes on other “A” & “B” board 

models or the length of harvest, whichever is less. 

~ 21 ~ g/27/96

2. 

At the end of every harvest, water overflows the 

reservoir stand pipe to flush concentrated minerals 

out of the reservoir and down the drain. This 

flush can be extended by adjusting the defrost 

completion timer to a longer setting. Remember that 

this will lengthen the total harvest time. 

Freeze Cycle 

When the defrost completion timer times out, the 

freeze cycle begins. The compressor continues to 

operate, the hot gas and inlet water valves close, and 

the pump motor and self contained condenser fan 

motor starts. For the first five minutes of freeze, a 

short cycle protection timer on the board is in control. 

After 5 minutes, the control board re-checks the 

thermistor for 43°F (38°F for KM-1201). this assures 

that the hot gas valve has closed. The float switch now 

assumes control of the freeze cycle. 

You will notice that the total cycle time for KM units is 

up to three times that of other cubers in the market. 

This longer cycle is designed into the unit operation. 

See the unit performance data by model in this guide 

for actual cycle times. 

As the water cools and ice forms on the evaporator, 

the water level in the reservoir drops. When the level 

drops, the float in the float switch drops and finally 

opens the circuit. This starts the next harvest cycle 

(cycle returns to 1 above). The water level in the 

reservoir actually controls the float switch circuit. If the 

float is adjusted upwards, the unit will cycle quicker 

allowing for a smaller cube size. The unit is shipped 

from the factory with the float switch adjusted to the 

large cube size. This setting provides the best 

efficiency for the KM series units. 

FOR FACTORY SUPPORT 

co NTACT HOSHIZAKI CARE 

1 -800-233-I 940 

AT: 

~ 22 ~ g/27/96

HOSHIZAKI KM CUBER 

SEQUENCE OF OPERATION 

For ALL “C” or ALPINE control board units, KM452, 632, 

M & S Models 

THE STEPS IN THE SEQUENCE ARE AS FOLLOWS: 

1. 1 Minute Fill Cycle 

The unit always starts in the 1 minute fill cycle. When 

power is applied to the unit the water valve is energized 

and the fill period begins. After 1 minute the board 

checks for a closed float switch. If the float switch is 

closed the harvest cycle begins. If not, the unit will not 

start without adequate water in the sump. This serves 

as a low water safety shut off. The water valve will 

remain energized through additional 1 minute cycles 

until water enters the sump and the float switch closes. 

2. 1st Harvest Cycle 

The compressor starts, hot gas valve opens, water 

valve remains open and harvest begins. As the 

evaporator warms, the thermistor located on the 

suction line checks for a 48” F. temperature. When 

48” F. is reached, the harvest is turned over to the 

adjustable control board defrost timer which is factory 

set for normal conditions. This adjustment can vary the 

defrost timer from 1 to 3 minutes. 

3. Freeze Cycle 

After the timer terminates the harvest cycle, the 

hot gas and water valves close, and the freeze 

cycle starts. For the first 5 minutes the controller 

board will not accept a signal from the float switch to 

end the freeze cycle. This 5 minute minimum freeze 

acts as a short cycle protection. At the end of 5 

minutes the float switch assumes control. As ice builds 

on the evaporator the water level in the sump lowers. 

The freeze continues until the float switch opens and 

terminates ice production. 

4. Harvest Pump Out 

When the float switch opens and signals the 

completion of the freeze cycle, the harvest cycle 

begins. The hot gas valve opens and the compressor 

~ 23 ~ g/27/96

continues to run. The d rain 

IO/20 second pump ou t. 

starts counting the 

The water pump stops for 2 seconds and reverses, 

taking water from the bottom of the sump and forcing 

pressure against the check valve seat allowing water to 

go through the check valve and down the drain. At the 

same time water flows through the small tube to power 

flush the float switch. When the drain timer stops 

counting, the pump out is complete. 

Pump out always occurs on the 2nd harvest after 

startup. The Alpine control board allows for adjustment 

for pump out to occur every cycle, or every 2nd, 5th or 

10th cycle from this point. 

5. Normal Harvest Cycle 

The water valve opens to allow water to assist the 

harvest. As the evaporator warms, the thermistor 

reaches 48” F. The control board receives the 

thermistor signal and starts the defrost timer. The water 

valve is open during harvest (defrost) for a maximum of 

6 minutes or the length of harvest, whichever is shorter. 

When the defrost timer completes its count down, the 

defrost cycle is complete and the next freeze cycle 

starts. 

The unit continues through 3, 4 and 5 sequence until 

the bin control senses ice and shuts the unit down. 

KM CHECK OUT PROCEDURE 

The 10 minute check out procedure is basically a 

sequence check which can be used at unit start up or for 

system diagnosis. Using this check out procedure will allow 

you to diagnose electrical system and component failures 

in approximately 10 minutes under normal operating 

conditions of 70°F or warmer air and 50°F or warmer water 

temperatures. Before conducting a 10 minute check out, 

check for correct installation, proper voltage per unit name 

plate and adequate water supply. As you go through the 

procedure, check to assure the components energize and 

de-energize correctly. If not, those components and 

controls are suspect. 

~ 24 ~ 9127196

10 MINUTE CHECK OUT PROCEDURE 

ALPINE CONTROL BOARD 

I-Turn power off-Gain access to control board 

2-Turn power on-place control switch in ice position 

A) 1 minute fill period-WV energized 

After 1 minute control board checks FS. If FS is 

closed . . . unit cycles to Harvest. Continue to (B). 

If FS is open unit repeats 1 minute fill cycle until 

switch closes (low water safety protection during 

initial start up and at the end of each harvest.) 

B) Initial Harvest Cycle WV remains energized, C, 

HGV, (FM on RS model) energize. Evaporator 

warms-thermistor senses 48°F turns operation of 

harvest to control board defrost completion timer- 

timer completes-unit cycles to freeze continue to (C) 

* Harvest time varies with water and air temp. 

(Average 2-3 minutes). If unit fails to cycle into 

freeze, check thermistor and control board. 

C) Freeze cycle-C remains energized, PM (LV on RS 

model) and FM energized, WV, HGV de-energized. 

Unit is locked in freeze by 5 minute short cycle 

protection timer. After 5 minutes, freeze cycle 

operation is transferred to FS for freeze termina- 

tion. During first 5 minutes of freeze, confirm that 

evaporator temp. drops. After 7 minutes in freeze, 

remove black float switch lead from control board 

(K5) terminal . . . unit should immediately switch to 

normal Harvest Cycle-continue to (D). 

*If unit remains in Freeze after 7 minutes with 

FS lead removed, change control board. 

D) Normal Harvest Cycle (IO/20 second pump out) C 

remains energized, HGV energizes. PM stops for 2 

seconds and starts in reverse rotation for 1 O/20 

seconds. (This removes contaminants from water 

sump through check valve and down the drain and 

allows for power flush of FS.) Check clear tubing at 

check valve, or unit drain for water flow to affirm 

pumpout. 

~ 25 ~ g/27/96

E) Normal harvest continues -WV energized- return 

to (B). 

* Unit continues through sequence (B) . . (C) . . 

(D) until bin control is satisfied or power is 

turned off. 

* Unit starts at (A) any time bin control operates 

or power is interrupted. 

NOTE: A & B control board check out procedure 

requires additional time (approximately 18 minutes total). 

Same sequence as above excluding step (A) 1 minute fill 

and (D) 1 O/20 second pump out. In step (C) allow 10 to 12 

minutes in freeze before removing FS lead. 

Legend: C = Compressor LV = Line Valve 

CC = Contractor Coil PM = Pump Motor 

FM = Condenser Fan Motor RS = Remote System 

FS = Float Switch WV = Inlet Water Valve 

HGV = Hot Gas Valve 

RESERVOIR FLUSH SYSTEM 

A displacement device ( cap or assembly ) is positioned 

over the top of the overflow stand pipe. This device allows 

sediment to be pulled from the bottom of the reservoir and 

flush down the drain when overflow occurs. Water should 

always overflow the stand pipe for a short period towards 

the end of harvest to allow this flushing action. If overflow 

does not occur, you have restricted water flow into the unit. 

Check the inlet water valve screen , your incoming water 

line size or the external filtration system. 

Pump out models have a built-in power flush of the float 

switch. Models without a pump out will have a white, 

gravity flow, flush box mounted inside of the evaporator 

compartment. This box has an internal stand pipe with a 

siphon cap over it. A small fill tube fills the box with water 

from the inlet supply pipe during harvest. When this box 

fills completely, it empties due to the siphon effect and 

flushes the float tank. If the water valve is leaking by, the 

box will fill in freeze and empty into the float. This can 

cause premature harvest or a short cycling effect. 

~ 26 ~ g/27/96

COMPONENT CHECKS: 

1. Check out the float switch with an ohm meter. When the 

float is up, the switch is closed. When the float is fully 

down, the switch is open. The symptoms of a bad or 

sticking float switch are: 

Up / Closed: 60 minute freeze cycle (longer for 

“A” board units) 

Down / Open: “A” or “B” board units will cycle 

back to harvest after 5 to 7 minutes 

in freeze. “C” or Alpine board units 

will shut down on low water safety 

(water runs continuously with no 

unit operation). 

2. The thermistor must be mounted securely to the suction 

line using a heat sink compound. This assures good 

heat transfer and accurate sensing of the suction line 

temperature. Use Hoshizaki part number: 4A0683-01 or 

equivalent. (Radio Shack #276-1372 or GE Electronics 

#I O-81 08) 

Check out the thermistor mounting and check thermistor 

resistance versus temperature per this chart: 

THERMISTOR TEMPERATURE / RESISTANCE 

SENSOR TEMP(“F) RESISTANCE (K OHMS) 

0 14.4 

10 

10.6 

32 

6.0 

50 3.9 

70 2.5 

90 1.6 

The symptoms of a bad thermistor are: 

Open: Unit remains in harvest for 15 minutes on “C” 

board, 20 minutes on Alpine boards. 

Unit remains in harvest permanently on “A” 

or “B” boards. 

Shorted: Unit locks out on manual reset high tempera- 

ture safety. 

Note: On “B”, “C”, & Alpine boards, if the evaporator 

reaches 127°F the thermistor signal (500 ohms) shuts 

down the unit on this manual reset safety. This is the only 

~ 27 ~ 9127196

manual safety in the KM series units. To safety 

turn the unit power off and back on. 

3. For “C” or Alpine board units, check out the control 

board using a volt meter to check the 12 volt control 

voltage at connector K2. On all boards, check for 115 

to 120 VAC input and output voltage to each compo- 

nent at the Kl connector. High input voltage will shut 

down “C” or Alpine units on an automatic reset safety. 

Alpine units have a built in automatic reset low voltage 

safety also. 

4. The bin control used on all KM units is an adjustable, 

thermostatic control. The thermostatic bulb is mounted 

in the ice drop area. To adjust the bin control, hold ice 

against the bulb while the unit is operating. The unit 

should shut off within 6 to 10 seconds. If this does not 

occur adjust the thermostatic control by turning the 

screwdriver slot. Adjusting towards warmer will allow 

the unit to shut down quicker. This adjustment should 

be checked at installation, when diagnosing a bin 

control problem, or if a replacement bin control is 

installed. 

KM 451 / 631 / 1201 units have a bin control bracket 

that mounts under the unit. KM-250M, and all KM- 

1200M / S and larger units have a drop down bracket 

that must be dropped down, secured, and plugged in 

at installation. The ice must contact the bulb to 

operate the bin control. Some bin applications 

require an extention bracket or relocation of the bulb 

mounting to allow for proper shut down. Check this 

positioning if the control is adjusted properly and ice 

continues to back up into the evaporator section. 

The symptom of a bad bin control are: 

Stuck closed : The unit continues to operate when 

the bin is full. This allows ice to back up in the 

evaporator section and generally causes a freeze up 

condition. This will also occur if the bin control is 

adjusted to cold or fully “CW”. Check the adjustment 

and bulb location before you diagnose a stuck bin 

control. 

~ 28 ~ g/27/96

Stuck open : The unit will not start in the ice position. 

An easy method to check for an open bin control on M 

& S units is to flip the control switch to wash, if the 

pump starts, the bin control is closed. The same check 

can be used on KM-451 / 631 / 1201 units however, 

they have a 2 minute time delay before the pump starts 

if the unit is shut off. 

DCM Bin controls may be a mechanical flapper with a 

magnetic proximity switch or a micro-switch assembly. 

Since these controls have moving parts, make sure 

that all parts move freely. Sticking can occur if scale 

builds at the pivot points. 

Flakers may have either a mechanical or thermostatic 

control. In some cases, depending on the model, both 

types are combined to provide increased safety. Some 

flakers have an additional spout safety control which 

will be a thermostatic or mechanical type. This control 

may have an audible alarm and has a manual reset. 

The spout control backs up the bin control, shuting 

down on this manual reset safety. If this occurs, always 

check the bin control operation. 

5. Check other 

multimeter. 

components using a good quality 

~ 29 ~ g/27/96

A label which details the step by step cleaning/sanitizing 

procedure is located on the inside front panel of the ice 

machine. These instructions are also provided in the 

Instruction Manual shipped with each unit. Follow these 

instructions to conduct a thorough cleaning and sanitizing 

of the water system. 

Annual cleanings are recommended. More frequent 

cleanings may be required in bad water areas. 

CLEANERS- 

Hoshizaki recommends “Hoshizaki Scale Away’ or “Lime- 

A-Way” (by Economics Laboratory, Inc.) however any FDA 

approved ice machine cleaner is acceptable. If you carry a 

nickel safe cleaner, the acidic solution is weaker than 

normal cleaners to protect plated surfaces.You may need 

to use a heavier mixture of nickel safe to cut heavier scale 

deposits. 

RECOMMENDED CLEANING SOLUTION MIXTURE 

MODEL CLEANER WATER 

KM-250 7 FI. Oz. 

KM-500/630/800 16 FI. Oz. 

KM-l 200/l 600 27 FI. Oz. 

KM-2000/2400 38 FI. Oz. 

All Flakers / DCM 9.6 FI. Oz. 

1.3 Gal. 

3.0 Gal. 

5.0 Gal. 

7.0 Gal. 

1.6 Gal. 

The system should be sanitized using a solution of water 

and 5.25% sodium hypochlorite. Any commercial sanitizer 

recommended for ice machine application is acceptable. 

RECOMMENDED SANITIZING SOLUTION MIXTURE 

MODEL SANITIZER WATER 

KM-250 

KM-500/630/800 

KM-l 200/l 600 

KM-2000/2400 

All Flakers / DCM 

.65 FI. Oz. 1.3 Gal. 

1.5 FI. Oz. 3.0 Gal. 

2.5 FI. Oz. 5.0 Gal. 

3.7 FI. Oz. 7.0 Gal. 

2.5 FI. Oz. 5.0 Gal. 

~ 30 ~ g/27/96

The steps for a cuber production check are as follows: 

1. Time a complete cycle from the beginning of one 

freeze cycle to the beginning of the next freeze 

cycle. 

2. Catch al of the 

the total batch. 

ice from this freeze cycle and weigh 

3. Divide the total minutes in a 24 hour day (1440 

minutes) by the complete cycle time in minutes to 

obtain the number of cycles per day. 

4. Multiply the number of cycles per day by the cycle 

batch weigh t for the cuber production per 24 hours. 

(1440. Total Cycle Time) 

24 Hou r Production 

x Ice Weight= 

Once you calculate the production, check the incoming 

water temperature, and ambient condensing temperature 

at the cuber and cross reference to performance data 

included in this manual to see if the calculation falls within 

10% of the specification. 

For the most accurate production check, a normal freeze 

cycle should be checked. If the evaporator compartment 

has been opened for service or if the unit has been cut off 

for a long period of time, the first freeze cycle will be longer 

than normal. Timing this cycle can result in an inaccurate 

production check. To avoid this, start the unit and allow it to 

operate for 10 minutes in the freeze cycle, unplug the float 

switch lead and cause the unit to cycle into harvest mode. 

Replug the float switch and start timing as soon as the next 

freeze begins. Also remember that the evaporator 

compartment must be closed during the production check. 

Removing the front cover to check the ice buildup during a 

production check will allow heat into the evaporator and will 

affect the total cycle time and actual production. 

~ 31 ~ g/27/96

WATER AND REFRIGERATION CIRCUIT 

DRAWING REFERENCE CHART 

MODEL PAGE 

KM-250B .................................................................... 33 

KM-250M ................................................................... 34 

KM-451 DU ................................................................. 35 

KM-451 DWU .............................................................. 36 

KM-452DU, DWU ....................................................... 40 

KM-450MAB, MWB ................................................... 40 

KM-450MRB .............................................................. 41 

KM-601 D .................................................................... 36 

KM-631 DU, DWU ....................................................... 36 

KM-631 DSU ............................................................... 37 

KM-632DU, DWU ....................................................... 40 

KM-632DSU ............................................................... 41 

KM-630MAB, MWB ................................................... 40 

KM-630MRB .............................................................. 41 

KM-800MAB, MWB ................................................... 40 

KM-800MRB .............................................................. 41 

KM-l 201 DWU ............................................................ 38 

KM-l 201 DU, DSU ..................................................... 39 

KM-l 200MAB, MWB ................................................. 42 

KM-1200MRB ............................................................ 43 

KM-1200SAB, SWB ................................................... 44 

KM1 200SRB .............................................................. 45 

KM-l GOOMRB ............................................................ 43 

KM1 600SWB ............................................................. 44 

KM1 GOOSRB .............................................................. 45 

KM2000SWB, SRB .................................................... 46 

NOTE: Some drawings have been combined to represent 

more than one model. 

g/27/96

KM=250BAB, KM-250BWB 

KM=250BAC, KM-250BWC 

~ 33 ~ g/27/96

KM=250MAB, KM-250MWB 

Water 

/== 

g/27/96

**stw 

%PFl, 

- 

KM-451 DU 

~ 35 ~ 9127196

KM-451 DWU 

KM-601 DU, KM-601 DWU 

KM-631 DU, KM-631 DWU 

g/27/96

KM-631 DSU 

\.-. 

~ 37 ~ 9127196

KM-1201 DWU 

g/27/96

KM-1201 DU 

KM-1201 DSU 

g/27/96

KM-452 DU KM-452 DWU 

KM-450 MA6 KM-450 MWB 

KM-632 DU KM-632 DWU 

KM-630 MAB KM-630 MWB 

KM-800MAB KM-800 MWB 

* A HIGH Side access valve is included on later “M” 

models 

~ 40 ~ g/27/96

KM-450 MRB 

KM-632 DSU 

KM-630 MRB 

KM-800 MRB 

g/27/96

KM-1200 MAB 

KM-1200 MWB 

Spray Tube 

c Relriperant Circuit 

- Water Circuit 

/WI --- ---P - - - 1 

Drier 

-A 

Expankn Valv@ 

Water Regulating Value 

~ 42 ~ 9127196 

Line Valu

m Water Circuit 

KM-1200 MRB 

KM-1600 MRB 

COndcrrsirlp Pr~urt Rqulatnr 

f 

9127196

~ 44 ~ 9127196 

KM-1 200 SAB 

KM-1200 SWB 

KM-1600 SWB

___ 45 ~ 9127196 

KM-1200 SRB 

KM-1600 SRB

g/27/96 

KM-2000 SW6 

KM-2000 SRB

~ 47 ~ 9127196

~ 48 ~ 9127196

- 

- 

g/27/96 

, 

, 

, 

, 

I 

I 

I 

I 

I 

I 

I 

I 

I 

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I 

I 

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I 

I 

I 

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I 

I 

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I 

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I 

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~ 50 ~ g/27/96

- 

: 

C 

. 

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. 

C 

. 

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C 

. 

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C 

. 

C 

. 

C 

. 

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. 

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g/27/96 

i 

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~ 53 

~ 

g/27/96 

I I 1

g/27/96

- 

c 

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c 

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c 

. 

C 

. 

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c 

. 

. 

C 

. 

c 

. 

c 

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c 

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c 

.

g/27/96

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I 

I 

I 

I 

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58 ~ 

g/27/96 

I 

- I 

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C 

1 

c 

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C 

. 

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62 ___ g/27/96 

- 

I 

, -

63 ~ g/27/96 

9

g/27/96 

- 

- 

I 

, -

g/27/96

m a 

L- 

I 

I

g/27/96 

X 

CD 

XL0 

N 

CD 

XL0 

N

g/27/96

~ 69 ~ g/27/96 

a 

k 

P

__ 70 ___ g/27/96 

KM-250BWB All - K, A 

up to A 10705 

“C” Board for other serial numbers unit see diagram B 

MODEL 

KM-250BAB 

A 

SERIAL NUMBER 

All - K, A 

up to A 22955

~ 71 ~ g/27/96 

$!L-. .-.-. 3;-.cp -.-., 

Si c41 

g;- % - i 

------- -_ i 

Ui 

i 

fii - 

3L.Z. ._. -.-. z - -.-, * .-.I i 

’ F !F 

I 

-~-'-.-'---'-.-'-'---.-., r'-'-'~ . N 

P gj i A 

i 

rcI 

0 

NOTE: Later B-B and ALL B-C units have an additional 

“Flush” water valve on terminal 3 of the Control 

Switch and No Interlock Switch 

6 

MODEL SERIAL NUMBER 

KM-250 BAB ALL after A 22956, All B,C 

KM-250 BWB ALL after a 10706, All B,C 

KM-250 BAC / MAB All 

KM-250 BWC / MWB All 

Alipne Board

g/27/96 

C 

KM-451 DU, DWU 

No serial number break available. 

If 9 pin connector has DBU jumper use this diagram. 

“A” Board

~ 73 ~ 9127196 

IE 

3 w w 

7 -I 

D 



If 9 pin connector has no DBU jumper use this diagram. 

“B” Board

g/27/96 

E 


KM-452 DU, DWU ALL units produced 

“C” Board

g/27/96 

MODEL 

KM-452 DSU 

F 

SERIAL NUMBER 

ALL Units produced 

“C” Board

~ 76 ~ g/27/96 

00 

.._ ~._. C.. 

-.-. .- 

I 

i 

. e 

._____-_~_~~~-~.f_f.~-l.. 

I 

3 

i 

____ __-_-_- *-.m+ _.l._ q 

i 

*meC-OOCn-. 

_.- - - _ -.-_-_-__ _ __ --.-_-,-.-.- -.- _ ____ -.-.- 

MODEL 

KM-450 MAB 

KM-450 MWB 

G 

SERIAL NUMBER 

ALL J, K, A up to A26245 


“C” Board

g/27/96 

lb 

_-_--------------- 

c 

% 

C 

EE 

SS 

L 

_ _-_-.-_- - -1 

0 

00 

. . - .--.-.-_ .-. 

! 

MODEL 

KM-450 MRB 

H 

SERIAL NUMBER 


“C” Board

~ 78 ~ 9127196 

r.~ ____. ~ -_-.-_-.-. * 

8 

II - 

i i 

-i- 

8 i ------- -- i 

Xi 

i 

i= YI i 

* n 

L.,. .-.-.-*-.-.-- .,.I 

Ip ’ j7 

5 

I p 

-.-.-.-*-.-.-*_*-.-*-.-. 

i Q Q 

i ia i-y----- F-*-y ilNICI( 

i 0’ i 0’ 

i.,.,., 1 &,,,Z -2 

MODEL 

KM-450 MAB 

KM-450 MWB 

I 

SERIAL NUMBER 

All after A26246, B, C, D 

All after A221 07, B, C, D 

Alpine Board

~ 79 ~ 9127196 

I I 

..-. .- 

..-_ .- 

*mcmur~~~-; ;-mm: i 

0 

4 

2 Q i 

-.- -_- -.-.- -.-.-.-.-‘, I-‘-‘-.-, 

MODEL 

KM-450 MRB 

J 

SERIAL NUMBER 

All after A10182, B, C, D 

Alpine Board

~ 80 ~ g/27/96 

,--------- 

I 

i= E 

K 



If 9 pin connector has DBU jumper use this diagram. If not, 

use diagram M. 

“A” Board

~ 81 ~ g/27/96 

L 

KM-631 DSU 


If 9 pin connector has DBU jumper use this diagram. If not, 

use diagram N. 

“A” Board

~ 82 ~ g/27/96 

M 



If 9 pin connector has no DBU jumper use this diagram. If it 

does, use diagram K. 

“B” Board

~ 83 ~ g/27/96 

N 

KM-631 DSU 


If 9 pin connector has no DBU jumper use this diagram. If it 

does, use diagram L. 

“B” Board

~ 84 ~ 9127196 

NOTE: KM-632D does not have protect relay. Hi-Pressure 

switch and control switch are located at “X”. 

KM-800 MWB has compressor cooling fan 

0 


KM-632 DU, DWU All units produced 

KM-630 MAB All J, K, A up to A23851 

KM-630 MWB All J, K, A up to Al 1501 

KM-800 MAB All J, K, A up to A21 181 

KM-800 MWB All J, K, A up to A20731 

“C” Board

~ 85 ~ g/27/96 

NOTE: KM-632 DSU does not have protect relay 

MODEL 

KM-632 DSU 

KM-630 MRB 

KM-800 MRB 

P 

SERIAL NUMBER 

ALL 

ALL J,K, A up to A12201 

All J, K, A up to A20806 

“C” Board

~ 86 ~ g/27/96 

i 

i 

,--., 

E . 

i 

i I 

E 

&di 

13 52 e 

i i4N”i m-------3 p.---.-, , 

i35yr)i i 

P 

i 

i Oi L,,P,ii 

i .-.-1-.-. t :, -.-. . ._._. 

NOTE: KM-800 has compressor cooling fan 

MODEL 

KM-630 MAB 

KM-630 MWB 

KM-800 MWB 

KM-800 MWB 

Q 

SERIAL NUMBER 

ALL after A 23852, ALL B, C, D 




Alpine Board

~ 87 ~ 9127196 

i 

52 i 

-.-.- .-.-‘, r’-‘-‘-, i 

* m e-l ; 

i 

. 

NOTE: KM-800 MRB does not have compressor cooling 

fan 

MODEL 

KM-630 MRB 

KM-800 MRB 

R 

SERIAL NUMBER 

ALL after A12202, ALL B, C, D 


Alpine Board

g/27/96 

a 

3 

S 

KM-1201 DU, DSU 



If not use diagram U. 

“A” Board

g/27/96 

KM-l 201 DSU 



If not use diagram V. 

“A” Board

9127196 

W 

U 



If 9 pin connector does not have DBU jumper use this 

diagram. 

If it does use diagram S. 

“B” Board

g/27/96 

V 

KM-l 201 DSU 


If 9 pin connector does not have DBU jumper use this 

diagram. 

If it does use diagram T. 

“B” Board

5 

i 

NOTE: Early MAB, MWB had 3rd hot gas valve operated 

by a Hi-Pressure switch and no line valve. 

SAB, SWB has 1 hot gas valve and 1 fan motor 

W 


KM-l 200MAB ALL J, K, A up to A 20981 

KM-1200 MWB All J, K, A up to A 10679 

KM-l 200 SAB ALL K, A, up to A 20431 

KM-l 200 SWB ALL, K, A up to 10381 

“C” Board

~ 93 ~ 9127196 

iz 

32 !2 

,-.-.-.y r--.-.-, 

; g!/ ;-cum; ;-NC-J; 

0, 

O* 

i-- 

i 

i.-.-.-.-. .l..'-.-. : ::7'_ 

0 

.-. -- 

.-. .- 4 

z 

m 

i2 i A 

QD 

I 

-.- - ----,#-.-.-.-, 0 

-ernN ~;i-^1c3 i ! 

~.~.~_~_~_~___-___~_~.~.~.~. 

I 

i - 

-.-.-.-.- -.- -._._. 4 

I 

i 

S 

NOTE: SAB, SWB has 1 hot gas valve and 1 fan motor. 

MWB has no fan motor. 

X 


KM-l 200MAB ALL after A 20982, ALL B, C, D 

KM-1200 MWB ALL after A 10680, ALL B, C, D 

KM-l 200 SAB ALL after A 20432, ALL B, C, D 

KM-1200 SWB ALL after A 10382, ALL B, C, D 

Alpine Board

~ 94 ~ 9127196 

r-7 

1 J 

I 

--- 

4: 

F 

Ei 

7 

!i 

NOTE: Early Early MRB had 3rd 3rd hot gas valve operated by a Hi- 

Pressure switch and no line line valve. 

SRB SRB has has 1 hot gas gas valve valve and 1 fan motor 

MODEL 

KM-1200MRB 

KM-l 200 SRB 

Y 

SERIAL NUMBER 

ALLJ,K,AuptoA12196 

ALL K, A, up to A 11381 

“C” Board

~ 95 ~ g/27/96 

i - -3 i - -P_i i 

.-.-. .-.-.-. ._,-. 

I- -.-.-I r.- _.-, , 

i~“Wi ;-c-4-i i 

8 M 

I 

x” 5-4 i 

_ f f -‘-‘-‘-‘-.-.-.-.-.,r .-.- -, 

5 

0 

I 

00 

0 

Qo 

N 

P-J 

MODEL 

KM-1200MRB 

KM-l 200 SRB 

z 

SERIAL NUMBER 



Alpine Board

~ 96 ~ 9127196 

KM- 

KM- 

MODEL 

1600 MWB, MRB 

1600 SWB, SRB 

AA 

SERIAL NUMBER 

All units produced 

All Units produced 

Alpine Board

~ 97 ~ 9127196 

BB 


KM-1600 MWB3, MRB3 All units produced 

KM-1600 SWB3, SRB3 All Units produced 

Alpine Board

~ 98 ~ 9127196 

r”.~“-.‘.“-‘-‘-.-.~~-.-.-.-.-.-.-.-.-.-.~~-.-.-.-.~.-.-.-.~-. --------‘7 

I 

I 

cc 


KM-2000 SWB3, SRB3 All Units produced 

Alpine Board

FLAKEFUDCM 

INSTALLATION - GENERAL 

Three things are critical for a proper F/DCM installation: 

1. The water temperature 

to 90” F range. 

should fall within the 45” F 

Colder water can cause excess stress on the auger 

gear motor which may activate the gear motor 

overload. 

2. A filter system is very important in poor water 

quality areas as high mineral content can cause 

premature bearing wear. 

3. The unit should be level, front to back, side to side 

to assure proper evaporator water level and 

maximum production. 

COMPONENTTECHNICAL DATA 

GEAR MOTOR SAFETIES 

The auger gear motor circuit includes two overload 

safeties. The primary safety is a manual reset, current type 

protector located in the control box. This is a time delay 

protector which operates at .9 amp over the normal gear 

motor amp draw. The secondary safety is a thermal 

protector which is incorporated into the gear motor 

windings. 

AUGER BEARINGS - 

Bearing Type: Sleeve/Alignment 

Bearing Material: Poly/Carbon 

The bearings are pressed into the (top) extruding head and 

(lower) brass housing. A repress program is available 

through the local Hoshizaki Distributor. 

~ 99 ~ g/27/96

BEARING INSPECTIONS 

Annual bearing inspections are recommended. More 

frequent inspections may be necessary in poor water 

quality areas. 

The steps for bearing inspections are as follows: 

(1 1 G ain access to the ice chute head by removing 

panel and spout connectors as necessary. 

the top 

(2) Remove the thumbnuts which hold the ice chute head 

in place and lift it up and off of the evaporator (take care to 

place the O-ring in a safe location until you replace the 

head.) 

(3) Remove the stainless steel bolt holding the cutter or 

breaker in place and lift off to access the extruding head 

and auger shaft. 

(4) Replace the bolt into the auger shaft and use it to push 

the auger back and forth from left to right to check for 

excessive movement. 

(5) Pull the auger towards you and try to insert a .02” round 

stock or pin gauge in between the back side of the auger 

shaft and bearing surface. Check several locations around 

the auger shaft. If the gauge will go in between the shaft 

and bearing, it is time to install new bearings. Both top and 

bottom bearings should be replaced if the top bearing is 

worn. If there is no excessive movement in the auger shaft 

and the gauge does not fit, the bearings are okay. Replace 

the cutter, O-ring, ice chute head and connectors. 

AUGER INSPECTION / BEARING 

REPLACEMENT 

A visual inspection of the auger bearing shaft surface is 

also recommended annually in poor water areas. The steps 

for this inspection is as follows: 

(1) Follow steps 1 

procedure above. 

(2) Remove the (metric) Allen 

the extruding head in place. 

through 5 of the bearing inspection 

head cap screws that secure 

~ 100 ~ g/27/96

(3) Thoroughly drain the water supply system. 

4) Turn the cutter up-side down, replace the bolt and use 

the cutter to lift the auger out of the evaporator. If heavy 

scale is present the auger may be difficult to remove. In 

this case, you will find it helpful to clean the evaporator 

system following the instructions located on the Inside front 

panel, before you attempt to remove the auger. 

The DCM units have a key welded on the inside of the 

evaporator cylinder. The auger has a key slot cut into the 

spiral flite. This keyway slot must align with the evaporator 

key before you can lift out the auger. Before attempting to 

remove the auger, remove the extruding head and look 

inside the cylinder to align the slot and key while turning 

the auger. 

(5) With the auger removed, remove the cutter and slide 

the extruding head from the top of the auger. Visually 

inspect the bearing surface at the top and bottom of the 

auger. Also inspect the auger flight and mechanical seal for 

any damage. 

The extruding head contains the top bearing, the bottom 

bearing is pressed into the brass housing at the bottom of 

the evaporator. To remove the housing: 

(6) Remove 

the housing. 

the Allen screws that secure the evaporator to 

(7) Loosen the belly band screw and lift the evaporator up 

and off of the housing. Holding the evaporator up, re- 

tighten the belly band. This will hold the evaporator up so 

that you can remove the housing. 

(8) Remove the bolts that secure the housing to the gear 

motor assembly and remove the brass housing. The 

mechanical seal ceramic disk and boot are pressed into 

the top of the housing. Remove these parts before you 

exchange the bearings. 

The extruding head and brass housing will be exchanged 

for a repressed set at your local distributor. When you 

replace the new parts, reverse the order above. Use a light 

coat of food grade lubricant around the bottom of the 

evaporator and on the o-ring portion of the housing to the 

seal o-ring and help keep it in place as you lower the 

evaporator. Inspect the mechanical seal thoroughly and 

reuse it, if it is in good shape. 

~ 101 ~ g/27/96

The flaker sequence of operation is accomplished through 

a series of timers within the solid state timer board. The 

actual timing for each step may vary slightly depending on 

the model however the steps should follow this sequence. 

With proper voltage and water supplied to the Flaker, and 

the Ice switch in the ice position, power is supplied to the 

inlet water valve. The unit will not start unless the reservoir 

is full and both floats on the dual float switch are closed (in 

the up position). This provides low water safety protection 

for all Hoshizaki auger systems. The operation is then 

turned over to the bin control. If the bin control is closed 

and calling for ice, within 10 to 60 seconds (depending on 

the model), the gear motor is energized. 60 seconds later, 

the compressor and condenser fan motor starts. As the 

refrigeration system cools the water in the evaporator, ice 

will start to form within 2 to 5 minutes. This depends on 

the inlet water temperature and ambient conditions. The 

Auger will break the ice away from the evaporator cylinder 

and move it upwards and out the extruding head. Ice 

production will continue until the bin control is satisfied 

(opens). 

During normal operation, the dual float switch will energize 

a water control relay to operate the inlet water valve. This 

maintains a consistent level of water in the water system. If 

the water is cut off to the unit, a 90 second timer will shut 

down the unit on low water safety. This is accomplished 

through a set of contacts on the water control relay. 

The shut down process is also a timed sequence. 

Approximately 90 seconds after the bin control opens, the 

compressor and condenser fan motor will stop. 60 

seconds later, the gear motor will stop. This allows for 

clearing the evaporator of ice so that the gear motor will re- 

start under a no load condition. The unit then sets idle, 

waiting for ice to move away from the bin control to re-start 

the sequence. 

~ 102 ~ g/27/96

The DCM sequence for the ice making unit is similar to the 

Flaker. It has a delay of the compressor at start up and a 

delay of the gear motor at shut down. See Flaker 

Sequence for details. 

The DCM-451 / 450 and 701 / 700 models have a periodic 

agitation of the ice in the bin which eliminates ice bridging. 

The solid state timer board will start the agitation for .6 

seconds every 2 hours. It will also start the agitation for .6 

seconds every 10 seconds of accumulated dispensing 

time. This shakes the ice enough to prevent it from freezing 

together, allowing consistent ice dispensing. 

The periodic agitation feature was not included on the first 

production of DCM-451 U units up to serial number prefix 

“G3” and DCM-701 U units up to serial number prefix “Gl”. 

The feature is added in the event of a board failure, by 

installing the new replacement kit number SPK870005 

which subs for the original timer board. 

FLAKEFUDCM PRODUCTION CHECK 

Checking the production on a F/DCM is a simple process. 

To check the production you will need a bucket or pan to 

catch the ice and a set of scales to weigh the ice. After the 

unit has operated for 10 to 20 minutes, catch the ice 

production for 10 full minutes. Weigh the ice to establish 

the batch weight. Multiply the batch weight by 144 for the 

total production in 24 hours. Some prefer to catch the ice 

for 20 minutes and multiply the weight by 72 for a more 

realistic production check. It is true that a longer catch is 

more accurate, however, it doubles your test time and may 

only show a 1 to 2% difference in production. 

Performing a production check is an excellent way to prove 

proper F/DCM operation. 

~ 103 ~ g/27/96

WATER AND REFRIGERATION CIRCUIT 

DRAWING REFERENCE CHART 

MODEL DRAWING PAG E 

F-251 B,U .................................... A .................... 105 

F-441 U ....................................... A .................... 105 

F-250B ....................................... B .................... 106 

F450B ........................................ B .................... 106 

F-650 MAB, MWB ...................... C .................... 107 

FIOOO MAB, MWB ..................... C .................... 107 

F-650 MRB ................................ D .................... 108 

F-l 000 MRB .............................. D .................... 108 

F-l 101 AU, AWU ....................... E .................... 109 

F-l 100 MAA, MWA .................... E .................... 109 

F-l 101 ASU ............................... F .................... 110 

F-l 100 MRA .............................. F .................... 110 

F-2000 MWB, MWB3.. ............... G ................... 11 1 

F-2000 MRB, MRB3 .................. H .................... 112 

DCM - 231U ................................ I .................... 113 

DCM - 241U ................................ I .................... 113 

DCM - 240B ................................ I .................... 113 

DCM - 451U ............................... J .................... 114 

DCM - 701U ............................... J .................... 114 

DCM - 450B ............................... J .................... 114 

DCM - 700B ............................... J .................... 114 

NOTE: Some drawings have been combined to represent 

more than one model. 

~ 104 ~ g/27/96

INLET 

DRIER 

WATER VALVE 

A 

F, 251 U, F-251 B 

F-441 U 

= REFRIGERANT CIRCUIT 

--- 

.= WATER CIRCUIT 

Note: F441 U has a high side pressure switch 

r 

ICE CHUTE 

g/27/96

Reservoir 

Condtn5et 

OJertl0s / 

-.- 

F-250B 

F-450B 

J Pan Waltr 

Yallte 

-Water Circuit 

- 

d--RetrigeIant Circuit 

- 

F-250 and early production F-450 units have a manual 

evaportor drain and no high side access valve. 

g/27/96

CONTAOL 

WATER 

VALVE 

C 

F=650MAB, F-650MWB 

F-l OOOMAB, F-l OOOMWB 

- WATER ClReLl i-r 

REFRlGERATlON CIRCUIT 

g/27/96

CONTROL 

WATER 

F-650MRB 

F-IOOOMRB 

a 

WATER Cl KU IT 

---- REFRIGEAATION ClflCUlT 

g/27/96

WATE R 

VALVE 

WATER 

REGULATING 

VALVE 

r 

/-- 

I 

WATER I ’ 

OUTLET 

F-IIOIAU, F-IlOlAWU 

F-l 100 MAA, F-l 1 OOMWA 

GEAR MOTOR . 

PRESSURE 

CONTROL 

~ 109 ~ g/27/96

CONDENSING 

UNIT 

F 

F-l 101 ASU 

F-l 1 OOMRA 

- --- 

WATER CIRCUIT 

REFRIGERATION CIRCUIT 

DRYER 

u I/ 

Oil cooler not included on F-l 100 MRA model 

~ 110 _______ g/27/96

F-2000MWB3, F-2000MWB 

Waler Control Water SPOUl 


- 

,.,-Refrigerant Circuit 

- 

~ 111 ~ g/27/96 

I 

i

H 

F-2000MRB3 

F-2000MRB 

\ Drain Pan Flush\ 

Condensing 

\ 

Unit Wa t e I 

Valve 


- 

-L---Refrigerant 

Circuit 

\ Drier 

Access 

~ 112 ~ 9127196

DCM-231 U, DCM-241 U 

DCM=240BAA, DCM240BAB 

WATER VALVE 

WATER CIRCUIT 

STORAGE BIN 

REFRIGERANT CIRCUIT 

HEAT-EXCHANGE 

NOTE: The access valves are to be installed in the model 

DCM-240BAB from the Auxiliary Code B-3. 

DCM-231 / 241 U has a fusible plug located in the 

liquid line and no accesss valves. 

~ 113 ~ g/27/96

DCM-451 U, DCM-701 U 

DCM=450BAA, DCM-700 BAA, DCM-700 BWA 

DCM=450BAB, DCM-700 BAB, DCM-700 BWB 

WATER VALVE 

ICE EXTRUDING 

TO STORAGE BIN 

- REFRIGERANT CIRCUIT 

NOTE: The Access Valve - High Side is installed in 

models DCM-450 / 700B-B on models 

produced after July 1992. 

DCM 451 / 701 U units do not have the oil cooler 

loop. 

~ 114 ~ g/27/96

g/27/96

~ 117 ~ 9127196 

I I I

~ 118 ~ g/27/96

~ 119 ~ 9127196

g/27/96 

I

moo 

NMM 

oonl 

MMO

~ 123 ~ g/27/96 

I I I

9127196

~ 125 ~ 9127196

~ 126 - g/27/96

~ 127 ~ g/27/96

~ 128 - g/27/96 

.- 

:

~ 129 ~ g/27/96 

I I I

g/27/96 

: 

.-

31 ~ g/27/96 

5 

.- 2 

n 

.- P 

.- L 

3 

a a m 0 n W W LL

g/27/96 

5 

3 

i 

z 

: . 

5 

- i 

ti ’ 

I I 

- . 

: L 

. 

- 1 

1 

c 

. 

1 

t 

3 ! 

: 

1 

- . 

L . 

c 

d 

E 

c 

L 

u 

(I 

E 

c 

L 

E 

(I 

I 

I

A 

DCM-231 U, DCM-241 U 

DCM=240BAA, BAB 

SINGLE PHASE 115/l 20V AC 60 Hz 

Sl Power Swtch 

315757-01 B 

g/27/96

DCM-451 U 

LINE 

L ‘7 ’ 

I ’ I I \ ‘I 1 HI, ,-..-J - 

I I WATiiTCH 

V 

1 

319462-OlA 

~ 134 ~ g/27/96

C 

DCM-450 BAA, BWA 

’ m f 

~ 135 ~ g/27/96

I 

I 

I 

I 

I 

I 

i 

i 

I 

I 

I 

i. 

VlRlNG DlAGRl 

WIRE COLOR C 

BR -BROWN 

W -WHITE 

BK -BLACK 

R -RED 

gy :;;::G” 

P -PINK 

DBU-DARK BLUE 

LBU-LIGHT BLUE 

V -VIOLET 

DBU 

-.-.-.- 

I 

Q’j’P’C 

-.-.-.- 

:3 

r 

I 

c 

KI 

_.-.-.-.+ 

23436 

D 

DCM - 450 BAB, BWB 

..- 

-1; 

- I-. -- 

..-.-. . 

-. ‘1 

S4i 

-.-.1 

BIN CONTROL SWITCH 

L.-.lD[.UL.-.-x.-.- .-.-.- I 

32615 I-DIA 

g/27/96

E 

DCM - 701 U 

DCM - 700 BAA, BWA 

WU & BWA models do not have a condenser fan motor. 

r 

-t 

K- 

319463-01 

g/27/96

F 

DCM -700 BAB, BWB 

BWB model does not have a condenser fan motor 

WIRING DIACRAY 

__ ac 

_ 

_--_ i 

.._._ ____ 

r’- ‘-‘--l 

Lp- : 

--, 

? Bv 

K3 

~ 138 ~ g/27/96

g/27/96 

1 I 

I 

- - - SW 

3 

I m - 

a 

F-251 B 

G

WIRE COLOR CODE 

H 

F-251 U, F250BAA 

BK-UUCK 

RR - RRRWW 

ON- DARK BtUE 

~K-CKEEN ME LIME 

UU-LIEIT 

0 --ORME 

BLUE 

---------1-m 

~-VIOLET w 

PROTECTOR 

b 4 

(UK) 

-- 

J LUU 

11 

F-250 BAA Gear Motor capacitor is IOMFD. 

317099-01 B 

9127196

nwcllwcm 

#-ma r-fm 

#a R4l 

m-urn 111 V-VIM 

I 

F-441 U, F-440BAA 

-----me------ 

F-441 U does not have a power supply protect relay and 

thermal protector is internal to gear motor windings. 

g/27/96

J 

F-450 BAB, BWB 

I I 

i@:i 

i@ii 

GY 

I-Ii . . . R 

C..-..-..-..-..-..-..-..-..-..-..-..-..-..-..-..~ 

ONLY AIR COOLED MODEL I I 

PRESSURE 

SWITCH 

BKn*BLACK 

BR**BRCMN 

DBU.DARK BLUE 

GY..GRAY 

LBUvLIGHT BLUE 

O..sORANGE 

P.=sPINK 

R**mRED 

V***VIOLET 

W..*WHITE 

Y***YELLOW 

324312-018 

~ 142 ~ g/27/96

; GEAR 

!W'OR 

1 RELAY 

(1 I%!! 

WATER CONTROL &q) ; ! LBu 

K 

F=650MAB, MWB 

P 

j DBU 

A UJMUJ 

..^. "- ..,.--* 

r ,d-ycT ..-..- PROVITED 

. . . . . . . 

..-..-. .-..-..-..-..-..-..-..-..~, 

ON WATER CWLGU WUCL 

. ..s...""~ - , . . . . .^-^- I-AQ I 

.V : v 

-.-.J, LBul BIh' CONTROL SWITCH 

R 

BK. + BLACK 

BR..ElRCMN 

DBU*DARK BLUE 

GY--GRAY 


O***ORANGE 

P*.*PINK 

R.*,RED 

V***VIOLET 

W- - *WHITE 

Y...YELLOW 

216312-0lA 

g/27/96

L 

F-IOOOMAB, MWB, MRB 

208-230/50/l (3 WIRE WITH NEUTRAL FOR 115W 

FUSE _ 

-.-.-.’ TRANS 

12ov 

0 -=(O) 1-1 24v 

(R 

=+'- 

IA 

BKtm?-?!??@K) 

CCMP. 

1 

BKa.BLACK O*~*oRANGE 

BR**BROlM P***PINK 

DBU.DARK BLUE R.--RED 

.._..-.._.._..* A..- -..-..- .-..-..-, 

10 

1 CONDENSER FAN MOTOR 

I I 

.__________._-..-..-..-..-..~..~.. “, : 

: 1 

CCMP. COOLING FAN WTOR t 1 

_.._.._.. - ..-.. -..-.. NOT PROVIDED ON WATER-COOLED MODEL 

PROVIDED ON REMOTE AIR-COOLED MODEL ONLY 

CONDENSER FAN MOTOR OF REWTE AIR-COOLED WODEL IS LOCATED IN REMOTE CONDENSER UNIT. 21301kOlB 

~ 144 ~ 9127196 

LBU 

1 

1 

P

s, - Power swkh 

S -9inCorW 

FS - Fbat Switch 

x3 - Relay 

x4,- ReW 

X -Relay 

ThtlW 

WV-waterwve 

SR - starling Rshy 

SC, - starting capecitff 

SC2 * stalling cqechr 

RC - Rwr* Capacitor 

FM -Fan boor 

FM4 - Fan Mdor 

H - Heater 

CM-Compr- 

GM * Gear Motor 

OL, - ovw (CM) 

OL, - Protedor (GM) 

OS - Proteclcr (Merit 

Cl - Capeciror (GM) 

cp - capee&cf my 

F + Fuse (IA) 

PS - Pressure Switch 

TH-spnJlcofltrol 

PB - Resd Stich 

KX-KeqReley 

TR - Tmnst- 

F-l 101 AU, AWU, ASU 

Early Production 

&al resd) 

230 VAC/60 l-W1 phede 

I % H I 

L X4 

‘DBu 

- 

QO 

0 TM 

F-l 101 AU does not have FM1 

F-l 101 AWU does not have FM1 or FM2 

~ 145 ~ g/27/96

WIRE CUR CODE 

N 

F-l 101 AU, AWU, ASU 

Later Production 

F-l 101 AU does not have FM1 

F-l 101 AWU does not have FM1 or FM2 

~ 146 ~ g/27/96

DBU-DARK BLUE 

LBU-LIEHT BLUE 

324880-01 B 

0 

F-1100 MAA, MRA 

~ 147 ~ 9127196

OBU-BARN BLUE 


_----------e-e 

P 

F-l 100 MWA 

236240/60/l 

324881-016 I 

PBWER 3wlTCH 

g/27/96

BK**BLACK O* * *ORANGE 

BR* *BROWN P-**PINK 

DBU-DARK BLUE R.--RED 

GY * *GRAY 'f-m-VIOLBT 

LBU*LICHT BLUE W+*.WHITE 

CONTROL T 

BIN CONTROL 

r-l 

LBU 

Q 

F=2000MWB, MRB 

208 -230/60/l (3WIRE WITH NEUTRAL FOR 115V) 

L2 L1 NEUT. 

V 

I 

CIRCUIT THERMAL GEAR MOTOR 

SPOUT INDICATOR/r;\ 

V 

, 

- RECTIFIER 0 I 

W 

AIR-COOLED MODEL ONLY 

IN REMOTE CONDENSER 

. CRANKCASE HEATER " 

321255-014 

g/27/96

BK**BLACK 

BR*sBROWN 

DBU*DARK BLUE 

GY * *GRAY 

LBU.LIGHT BLUE 

CONTROL T 

BIN CONTROL 

F-2000 MWB3, MRB3 

208-230/60/3 

I, , 

BR- 1 I 

PROVITED BY REMOTE -' 

AIR-COOLED MODEL ONLY 

IN REMOTE CONDENSER 

SPOUT INCICATORfi CRANKCASE HEATER R 

GY YJ 

BR POWER SWITCH 

FUSE c,ti 

0) 

ZTRANSFORMER 

BR 

SPOUT CONTROL RELAY : 6 

g/27/96

~ 151 ~ g/27/96

~ 152 ~ g/27/96

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