Husky 10 Foam

PM-F-OM140-0804

QmCK REFERENCE OPERATING INSTRUCTIONS 

PIERCE HUSKY 10 I HERCULES FOAM SYSTEM 

TO MAKE CLASS A FOAM 

1. Turn foam system "ON" with control switch on Red Husky control panel. 

2. Open water discharge valve and begin to flow from hose line. 

3. Set to the desired percentage (normal default is A onboard tank@ 0.5%). 

4. You are now making foam solution. 

TO SHUT DOWN AFTER CLASS A FOAM 

1. Turn foam system "OFF" with control switch on Red Husky control panel. 

2. Open the water discharge valve on the discharge(s) that were used and begin to 

flow from hose line until the water from the hose runs clear. 

3. Disengage water pwnp and open all manifold drains and water drains to relieve 

any trapped pressure. 

4. Close all drains and valves. The system is now ready to be put back into service. 

TO MAKE CLASS A COMPRESSED AIR FOAM (CAF) 

1. Turn foam systcm "ON" with control switch on Red Husky control panel. 

2. Turn air compressor "ON", (under 1000 engine RP .M.) on the blue Hercules 

control panel. 


4. Set to the desired percentage (nonnal default is 0.5%). 


6. Turn on the air injection to the corresponding discharge with the toggle switch 

located by the discharge valve control. 

7. You are now making compressed air foam. 

8. Adjust the "WET" / "DRY" ratio of the compressed air foam by opening or 

closing the water discharge valve. The more the water valve is opened the 

~etter" the CAP will be. 

TO SHUT DOWN AFTER CLASS A COMPRESSED AIR FOAM (CAF) 

1. Turn off all air injection switches (compressor may be turned off at this point if 

no longer needed). 

2. Turn foam system "OFF" with control switch on Red Husky control panel. 

3. Open the water valve to the discharge( s) that were used and begin to flow from 

hose line until the water from the hose nms clear. 

4. Shut off water valve to the discharge. 

5. Turn off the compressor on the blue Hercules control panel. 

6. Disengage water pump and open all manifold drains and water drains to relieve 

any trapped pressure. Close all valves/drains. System is ready to be put back into 

servIce. 

NOTE: System shut down and flushing can be started during MOP UP, this way all foam 

is used on the fIre. 

A

QUICK REFERENCE OPERATING INSTRUcnONS 

PIERCE HUSKY 10 I HERCULES FOAM SYSTEM 

TO MAKE CLASS B FOAM 

1. Turn foam system "ON" with control switch on Red Husky control panel. 


3. Push "Mode" button on red Husky control panel until "CLASS B FOAM" OR 

"DRAFf CLASS B" comes up, hit ENTER to make selection. An automatic 

flush will occur for 15 seconds. Put pickup tube in pail if using off board foam 

(You must open the foam inlet valve ifusing draft option). 


5. Turn on the air injection to the corresponding discharge with the toggle switch 

located by the discharge valve control. 

6. You are now making compressed air foam. 

7. Adjust the "WET" / "DRY" ratio of the compressed air foam by opening or 

closing the water discharge valve. The more the water valve is opened the 

"wetter" the CAF will be. 

TO SHUT DOWN AFTER CLASS B FOAM OR DRAFrlNG A DIFFERENT 

BRAND OF CLASS A FOAM 

1. Continue flowing water through discharges used. 

. If the off board foam inlet was used, open the offboard pick up valve and 

draft clear water through this line for 1 to 2 minutes. Turn up % to draft more 

flush water though the system. 

2. Turn the "CAUFLUSH - INJECT" (valve generally mounted behind the d/s 

pump panel) to cal/flush. Mode is indicated when verbiage is horizontal. 

. On display go to Flush Mode push Enter and release push Enter a second 

time and hold. 

. Return Call Flush valve to inject when raw foam is no longer visible. 

Continue flowing though discharges until they too are clear. Release Enter 

button. Drop down to a single discharge line. 

3. On red Husky panel press MODE button until "CLASS A FOAM" appears, press 

ENTER (15 second flush will occur automatically). 

4. Open the water discharge valve on a foam discharge. Flow water through this 

discharge until class A foam appears. Shut off Husky 10. Continue flowing 

though discharge until it again is clear of foam. 

5. Disengage water pump and open all manifold drains and water drains to relieve 

any trapped pressure. 

6. Top off foam tanks. 

7. System is ready to be put back in service. 

TANK FILL OPTION 

I. Open II.. turn valve on panel to open, close when done. 

2. Fill A tank only though "foam inlet valve". 

3. Fill B tank though "B foam inlet" (this is the only time this inlet is used). 

B

kciuQ Reference Operating Instructions 

elbaT of Contents 

ytefaS Information 

TABLE OF CONTENTS 

.Inside Front Cover 

TC-l to TC-3: 

i 

SCHEMATICS 

Fig 1- 

Husky 10 Foam System Schematic 

..11 

CHAPTER I-INTRODUCTION 

1-1 

1-2 

1-3 

1-4 

General Description 1-1 

System Capacity 1-1 

JFo~ Concentrate CoDlpati1Jility 1-~ 

JFo~ SysteDl CoDlponents and JFunctions 1-~ 

A. Hydraulic Drive SysteDl 1-~ 

1. Hydraulic GearPUDlp 1-~ 

2. Hydraulic JFilter 1-3 

3. Hydraulic Tank 1-3 

4. Hydraulic Cooler ; 1-4 

5. Hydraulic Manifold Block 1-4 

a. Hydraulic ~oportional 'lalve 1-4 

B. JFo~ Supply System 1-5 

1.. JFo~ Concentrate Tank 1-5 

2. JFo~ Tank Drain 'lalve 1-5 

3. JFo~ Tank ShutofI'lalve 1-5 

4. Auxiliary JFo~ Inlet 1-5 

5. Inline JFo~ Strainer 1-6 

6. JFo~ Concentrate Pump 1-6 

7. Ca1i1Jrate-JFlush /Fo~ Inject 'lalve. 1-6 

8. JFo~ Check 'lalve 1-7 

9. JFo~ Injection Manifold 1-7 

C. Water Supply SysteDl 1-7 

1. Inline Water Check 'lalve 1-'1 

2. Water JFlow Meter 1-7 

a. JFOaln Meter Installation Tee... ... 1-7 

D. JFo~ System Controls 1-8 

1. JFo~ System Controller 1-8 

2. JFo~ System Control Head 1-8 

TC-l

.AgnisecA Set Up Mode Screns 

.A Calibrate FlowmeterMode 

.B Calibrate Foam Pump Transducer.J 

.D.C Calibrate Clas A Foam Mode 

.E Calibrate Clas B Foam Mode 

teS Up, Calibration Procedures. 

Set Up Mode 

Set Default Foam Source 

CHAPTER 2 - INITIAL FOAM FILL AND SYSTEM CHARGING 

2-1 

2-2 

2-5 

CHAPTER 3 - OPERATING PROCEDURES 

3-1 

3-2 

3-4 

Husky 10 Stand-By Mode ... 3-1 

OperatingProcedures 3-1 

A. Husky 10 Foam System Activation 3-1 

B. Changing Foam Source 3-2 

C. Stopping Foam Solution Flow (Maintaining Water Flow).. 3-2 

D. Priming Foam System (Manual) 3-2 

E. Flushing Foam System (Manual) 3-3 

Flowmeter Manual Override 3-3 

A. Manual Mode Operation 3-3 

B. Flowmeter Mode Operation 3-4 

Using Auxiliary Pickup Connection As Foam Source 3-4 

A. Description 3-4 

B. Using Auxiliary Pickup Connection As Foam Source 3-5 

CHAPTER 4 - DISPLAY MODE 

Display Mode 

4-1 

CHAPTER 5 - SET UP & CALIBRA nON PROCEDURES 

5-1 

5-2 

F. Set Class A Concentrate Default Percentage... 

G. Set Class B Concentrate Default Percentage... 

5-1 

5-1 

5-1 

5-1 

, 5-2 

5-2 

5-4 

5-5 

5-5 

5-6 

TC-2

H. 

I. 

J. 

K. 

L. 

M. 

N. 

O. 

Set Default System Units 5-6 

Set Automatic Flush Time 5-6 

Reset Foam Strainer Maintenance Reminder 5-7 

Reset Water Strainer Maintenance Reminder 5-7 

Reset Hydraulic Fluid Maintenance Reminder 5-7 

Select Single or Dual Foam Tank System 5-8 

Select Optional Tank Fill Settings... 5-8 

Check Current Software Revision 5-8 

CHAPTER 6 - INSPECTION. MAINTENANCE AND REPAIR 

6-1 

6-2 

6-3 

6-4 

6-7 

Inspection And Maintenance 6-1 

Testing After System Maintenance 6-1 

Periodic Operation 6-1 

Recommended Hydraulic Oil For Husky 10 Proportioning System. 6-2 

A. Characteristics 6-2 

B. Recommendations 6-2 

Hydraulic Filter Cleaning and Replacement 6-2 

A. FilterReplacement 6-2 

In-Line Y -Strainer Maintenance 6-2 

A. Foam Feed Line Y-Strainer 6-2 

B. Flush/Cooling Water Y-Strainer .'.." 6-3 

Maintenance After Every Use 6-3 

CHAPTER7-TROUBLESHOOTING 

- -- -- -- 

7-1 

1-2 

lareneG Troubleshooting Information Matrix. .. ... ... 

7-1 

, 7-1 

TC-3

SAFETY INFORMATION 

Warning 

This manual has been prepared as an aid and guide for personnel involved in 

the start-up, operation and maintenance of the Pierce Husky 10 Foam 

Proportioning System. All instructions must be read and understood 

thoroughly before attempting any start-up, operation or maintenance to this 

system and its related equipment. Failure to follow any instructions could 

result in personal injury and/or damage to this equipment.

~ 

~~ 

T.b)IK UN[ 

r-O-

PUW'MM

THIS PAGE INTENTIONALLY LEFT BLANK

INTRODUCTION 

GENERAL 

. 

DESCRIPTION 

The Husky 10 Foam System operates as an On-Demand system by measuring water flow 

and injecting the required foam based on an operator defined percentage. Foam is drawn 

from either an on-board foam tank or through a draft hose from an alternate foam source, 

such as a curbside container. 

The foam concentrate is injected into a manifold, which distributes the foam/water 

solution to all designated discharges. Check valves in both the water line and foam line 

prevent contamination of the water and foam supplies. 

Options are available to use the foam system to fill the on-board foam tank(s) through the 

draft hose, eliminating the need to hoist buckets of foam to the top of the truck for 

pouring into the tank(s). 

The system is designed to supply foam concentrate at a maximum of 10 GPM and 400 

PSI operating pressure. The display will provide a message when the setpoint exceeds 

the maximum 10 GPM. Foam/water mixture can be delivered from any combination of 

discharge outlets with the same proportion being delivered to each one. 

Maximum Foam Solution Flow 

Foam Concentrate Water Flow 

(0.01-10 GPM) 

6% 166 GPM 

3% 333 GPM 

2% 500 GPM 

1% 

0.5% 

1,000 GPM. 

2,000 GPM . 

- Maximum water flow will depend on plumbing restrictions

INTRODUCTION 

The Husky 10 Foam System is designed to be compatible with most known Class A and 

Class B foam concentrates at the date of printing of this manual. The Husky 10 can 

proportion foam concentrates across a wide range of viscosities, from low viscosities 

such as Class A or Class B AFFF, through high viscosities such as Class B AR-AFFF. 

NOTE: 

To understand the relationship of the various components and their functions, 

please refer to the Husky 10 Schematic, Figure 1-1. The following 

information is intended to identify the various components and describe their 

function within the system. 

A. Hydraulic Drive System: The trucks engine and transmission are the power source 

for Husky 10 hydraulic drive system. The foam pump is driven by pressurized 

hydraulic fluid supplied by a hydraulic gear pump directly coupled to the water pump 

drive or power take-off driven off the truck transmission. The hydraulic system 

pressure and flow is regulated by a hydraulic manifold block that contains relief 

valves to protect the system from being over pressurized, and a proportional valve 

that controls direction and flow volume of the hydraulic fluid. 

1 The Hydraulic Gear Pump is a shaft driven gear pump mounted either directly 

to the water pump drive unit or PTO driven off the truck transmission. The 

hydraulic system is operational anytime the water pump drive is engaged. 

1-2

INTRODUcnON 

2. The Hydraulic Filter is a pressure bypass element-type filter manufactured by 

Hydac. The filter element is replaceable. The unit is installed inside the 

pumphouse and is used to filter the pressurized hydraulic loop. See Figure 1-1 for 

process location in the system. The part number for the replacement filter 

element is Hydac PN 0055DOIOBN3HC. 

3. The Hydraulic Tank (approximately 4 gallons) provides a reservoir for the 

hydraulic drive system. The tank is sufficient size to minimize foaming of the 

hydraulic fluid and is located to facilitate checking level and adding oil. Refer to 

Sect. 6-4 for Recommended Hydraulic Oil for the Husky 10 system. 

1-3

INTRODUCTION 

4 The Hydraulic Cooler is an oil-to-water type heat exchanger. It takes water 

directly from the water pump to cool the closed loop hydraulic system. The 

cooling water is then returned to the water pump suction while the cooled 

hydraulic oil is returned to the hydraulic tank. The hydraulic cooler allows for 

continual operation of the Husky 10 hydraulic system. 

s The Hydraulic Manifold Block assembly is a manifold block that controls the 

direction of the hydraulic oil flow in the system. The manifold block consists of 

the machined block, a hydraulic compensating valve. an internal hydraulic shuttle 

valve, a hydraulic relief valve, hydraulic pressure test port and the hydraulic 

proportional valve. 

a. The Hydraulic Proportional Valve controls the direction and volwne of 

hydraulic fluid to the hydraulic end of the foam pump. This controls the rate 

of displacement of foam from the foam pump. 

1-4

INTRODUcnON 

B. Foam Snooty System: The foam supply system stores, pumps and distributes the 

foam concentrate to the foam/water discharges by use of a foam concentrate tank, 

foam tank shut-otIvalve, auxiliary foam inlet, inline foam strainer, foam pump, check 

valve and foam injection manifold. 

1. The Foam Concentrate Tank is designed to provide on-board storage of foam 

concentrate. Design features shall include: construction compatible with foam 

concentrates, foam tank drain valve, expansion dome with locking fill hatch and 

pressure vacuum vent. The expansion dome allows for changes in foam 

concentrate volume due to variations in temperature. Foam concentrate level 

shall be maintained at the one-third full mark in the expansion dome at a 

minimum to reduce the air to foam concentrate interface. The pressure vacuum 

vent automatically balances internal foam tank pressure under both suction and 

filling operations. It is recommended that a cleanable foam concentrate level unit 

be installed in the storage tank. 

2. The Foam Tank Drain Valve is a manually operated gate valve. It is located 

behind the passenger side pump panel. 

3 The Foam Tank Sbut-off Valve is an electrically actuated, non-gateable ball 

valve. Its position is controlled by the Husky 10 foam control system. 

4 The Auxiliary Foam Inlet is located on the pump operator's panel and consists 

of a foam pick-up hose, a panel-mounted connection, a manually operated shutoff 

valve and a check-valve. This 1" diameter inlet allows for foam to be drafted 

from an off-board source such as a foam pail, canister, tote, etc. This allows for 

use of a different type or class of foam than what is currently stored in the foam 

tank, or for continued use of the foam system after the foam tank is empty. 

1-5

INTRODUCfION 

s. 

The Inline Foam Strainer is located before the inlet to the foam pump and 

screens all foam and flush water before it enters the foam pump. The strainer 

contains a removable 20-mesh screen basket. 

6. The Foam Concentrate Pump assembly is a brass/steel constructed, doubleacting 

cylinder pump. The hydraulic end of the pump is painted steel and controls 

the speed and direction of both cylinders. The hydraulic piston is connected to 

the foam piston by a single, straight shaft. The foam end of the pump is brass 

construction and contains 4 cartridge type check valves to prevent foam from 

flowing the wrong direction in the pump. The foam pump also has a pressure 

relief valve that recirculates the foam from the discharge side to the inlet side in 

the case of an obstruction or oveIpressure situation. The foam pump is speed and 

operation are monitored by a foam pump transducer located in the hydraulic end 

of the pump assembly. 

7. 

The Calibrate-Flush/Foam Inject Valve is a 3- way, quarter-turn ball valve that 

directs the foam either to a ground discharge or to the foam injection manifold. 

The valve is located immediately after the discharge of the Foam Concentrate 

Pump behind the driver side pump operator's panel. 

1-6

INTRODUCnON 

8. 

The Foam Check Valve located in the foam supply line prevents water from 

flowing backwards through the foam system and contaminating the foanl supply. 

9. 

The Foam Injection Manifold is the location where the foam is injected into the 

water supply and mixed for distribution to the foam/water discharges. 

C. Water Supply System: The water supply system supplies water to the foam injection 

manifold for foam to be added and distributed to the foam/water discharges. This 

system consists of an inline water check valve, water flow meter and flow meter 

installation tee. The size of the check valve and the flow meter installation tee are 

dependent on the number of foam/water discharges in the system. 

1 

The lnline Water Check Valve prevents foam from entering the water pump and 

the remainder of the water system. It is installed in the water piping, before the 

. . . the water flow meter. 

2. 

The Water Flow Meter measures the flow of water supplied to the foam/water 

discharges before foam is injected. This controls the amount of foam that is 

injected when the Husky 10 foam system is turned on. 

a. 

The Flow Meter Installation Tee is a stainless steel tee with standard 

grooved ends and a female NPT fitting for installing the water flow meter. 

1_'7

INTRODUcnON 

D. Foam System Controls: The foam system is controlled by a foam system controller 

module that contains the programming to actuate the appropriate valves, direct the 

hydraulic fluid, and control the injection rate of the foam. The user interfaces with 

the controller through the foam system control head. 

1 The Foam System Controller is an aluminum-enclosed unit that contains the 

electronic hardware and programming to control the various parts of the foam 

system. 

2. The Foam System Control Head is the operator interface with the foam system. 

It is located on the main pump panel. It has 6 operating buttons: System On/Off, 

Mode, Display, Enter, Arrow Up, Arrow Down. The display is a 2-line, 32 

character, LCD screen. System power is indicated by a red LED, and the foam 

pump operating is indicated by a green LED. 

1-8

INITIAL FOAM FILL AND SYSTEM CHARGING 

CAUTION: Do not mix different types or manufacturers brands of foam 

concentrate in the foam cells or piping. Mixing of different foam 

concentrates (either type or manufacturer) may cause deterioration of 

the foam concentrate, improper proportioning and poor performance in 

a fire situation. Mixing of Class A and Class B foam concentrates may 

result in a chemical reaction that can create globules, which can clog 

orifices and cause system failure. 

NOTE: 

Refer to the Husky 10 Foam System Schematic, Figure 1-1. For the 

purposes of this manual, it is assumed that Class A foam is the most 

commonly used agent and the system will be stored wet with Class A foam 

concentrate. If Class A foam is not the primary agent, adjust procedures to 

accommodate the primary foam concentrate. 




the foam concentrate, improper proportioning and poor performance in 

a fire situation. Mixing of Class A and Class B foam concentrates may 

result in a chemical reaction that can create globules, which can clog 

orifices and cause system failure. 

NOTE: 

Locate and close all foam tank and manifold drains. They may be found on 

and behind both the driver and passenger side pump panels. 

When filling the foam concentrate during a non-fire situation, the following procedure is 

recommended: 

The vehicle should be parked on a level surface or with the expansion dome of the 

tank slightly inclined. 

2. 

If filling from a pressurized source through the expansion dome hatch, the hose 

should be extended to the bottom of the tank to minimize frothing of the foam 

concentrate. 

2-1


3. If foam concentrate must be added by pouring through the expansion dome hatch, 

it must be done slowly to prevent aeration. If aeration occurs inside the tank, stop 

pouring until the foam concentrate bubbles dissolve. Take care not to allow dirt 

or debris to enter the tank. Pour the foam concentrate down the center of the 

round tube when filling the tank. This tube goes into the tank and allows the 

foam concentrate to enter Wlder the surface of foam currently in the tank to reduce 

aeration of the foam per NFP A. 

2-3. CLASS A FOAM CONCENTRATE TANK FILLING INSTRUcrlONS 

(OPTIONAL FOAM TANK FILL) 

NOTE: 

Locate and close all foam tank and manifold drains. They may be found 

on and behind both the driver and passenger side pump panels. 

Connect water supply to water pump and fill the water pump in accordance with 

the apparatus manufacturer's recommended procedure. 

NOTE: 

The Husky 10 hydraulic drive system is driven by the water pump drive 

mechanism, and the water from the water pump system is used to cool the 

hydraulic fluid. The water pump must be re-circulating to prevent damage 

to pump components. 

CAUTION: Recirculating water through the water tank and water pump may 

not provide enough cooling over long running periods as the heat may 

not dissipate the heat adequately. Be careful to not overheat 

hydraulic system by using warm water for cooling the hydraulic fluid. 

2 Connect the draft hose to the Foam Inlet connection on the driver 

side pump panel and open the Foam Inlet valve. 

3. 

Verify that the Tank Fill/Foam Inject valve is in the TANK FILL 

position. This valve should be located behind the small door on 

the lower rear portion of the driver side pump panel. (Words in 

the horizontal position indicate the position of the valve. The 

valves shown in the photo below are in the TANK FILUFOAM 

INJECT position.) 

2-2

~ 


4. 

Turn the foam system on by pressing the 

SYSTEM ON/OFF button on the 

display. The display should read: 

5, 

Press the MODE button until the display 

reads: 

6. Press ENTER. The display should read: 

TANKA 

FILL 

7. Once the tank level has reached the upper level float switch, the display should 

read: 

TANKA 

FULL 

and automatically shut off the foam pump. 

8. The display should return to the main water flow screen and read: 

NOTE: 

WATER FLOW 

0000 GPM 

To reduce the entrance of air into the system when filling the tank, the 

operator should be prepared to transfer the pick-up tube from one pail to 

the next before the pail is completely empty. 

9. 

Turn the valve back to the FOAM INJECT position. 

2-3


2-4. CLASS B FOAM CONCENTRATE TANK FILLING INSTRUCfIONS 

(OPrIONAL FOAM TANK FILL) 

NOTE: 

Locate and close all foam tank and manifold drains. They may be found 

on and behind both the driver and passenger side pump panels. 

1 

Connect the draft hose to the foam tank refill connection on either the driver side 

or passenger side pump panel and open the foam tank refill valve. 

2. Turn the foam system on by pressing the SYSTEM ON/OFF button on the 

display. The display should read: 

WATER FLOW 

0000 GPM 

3. Press the MODE button until the display reads: 

TANKB 

FILL 

4. Press ENTER. The display should read: 

TANKB 

FILLING 

5. Once the tank level has reached the upper level float switch, the display should 

read: 

TANKB 

FULL 

and automatically shut off the Class B foam fill pump. 

6. 

The display should return to the main water flow screen and read: 

WATER FLOW 

0000 GPM 

NOTE: 

Locate and close all foam tank and manifold drains. They may be found on 

and behind both the driver and passenger side pump panels. 

Class A Foam Concentrate is considered the primary agent. Fill Foam Cell A with Class 

A foam concentrate. The foam cell should be filled partway into the expansion dome to 

minimi7.e the surface area of foam concentrate subject to evaporation. If the automatic 

tank fill option was not selected with the system, pour foam concentrate down the center 

of the round tube when filling the tank. This tube goes into the tank and allows the foam 

concentrate to enter under the surface of foam currently in the tank. This is done to 

reduce the aeration of the foam concentrate per NFP A. 

2-4


1 

Connect water supply to water pump and fill the water pump in accordance with 

the apparatus manufacturer's recommended procedure. 

NOTE: 

The Husky 10 hydraulic drive system is driven by the water pump drive 

mechanism, and the water from the water pump system is used to cool the 

hydraulic fluid. The water pump must be re-circulating to prevent damage 

to pump components. 

CAUTION: Recirculating water through the water tank and water pump may 

not provide enough cooling over long running periods as the heat may 

not dissipate the heat adequately. Be careful to not overheat hydraulic 

system by using warm water for cooling the hydraulic fluid. 

2. 

3. 

Press ENTER to select foam source, press the up or down arrow button to change 

the foam injection percentage, press ENTER to accept selection and return to 

original water flow screen. (This step can be skipped in the future if default foam 

source is verified to be Class A Foam at the appropriate percentage.) 

4. 

Verify that the Calibrate-Flush/Foam Inject valve is in the Calibrate-Flush 

position. This valve should be located behind the small door on the lower rear 

portion of the driver side pump panel. (If the automatic Tank Fill option is 

installed, the Tank Fill valve also needs to be in the Foam Inject position. This 

valve is also located behind the small door on the lower rear portion of the driver 

side panel.) 

2-5


NOTE: Valve position is indicated by the horizontal positioning of the words. 

5. Press the MODE button until the 

display reads: 

Press ENTER to select the PRIME MODE. Press and hold the ENTER button 

until foam is coming out of the Calibrate-Flush line under truck. Then turn the 

valve to the Foam Inject position and hold ENTER button for 3 to 5 seconds. 

(Once the systeDl is completely primed, failure to release the ENTER button will 

cause the foam pump pressure relief valve to open. Pressure can be relieved by 

opening the manifold drain valve.) 

6. Press the SYSTEM ON/OFF button to turn the foam system off. 

7. Shutdown the water pump and the vehicle engine in accordance with the 

apparatus manufacturer's recommended procedure. 

NOTE: The foam concentrate system is now charged and is in stand-by. 

2-6

OPERATING PROCEDURES 

A. The foam system is in Stand-By Mode when: 

1. All valves are in their nonnal stand-by position. 

2. 

Water pump is primed and ready. 

3. No water is flowing out any foam/water discharge except to cool the water pump. 

4. Foam operation is anticipated from one or more discharge connections. 

s. 

6. 

The Husky 10 system is turned on and the SYSTEM ON light is lit. 

The appropriate foam source is selected (by default or by operator) and the foam 

system is charged. 

CAUTION: 

Before operating the Husky 10 System, operating personnel ~ 

familiarize themselves with all procedures and instructions regarding 

the water pump, aerial device(s), discharge devices and foam making 

devices. Failure to understand and follow any instructions could 

result in personal injury and/or damage to this equipment. 

A. Husky 10 Foam System Activation 

1 

2. 

Engage the water pump in accordance with the pump manufacturer's instructions. 

Turn foam system on by pressing the SYSTEM ON/OFF button on the display. 

3. Place the Calibrate-Flush/Foam Inject valve in the Foam Inject position. 

NOTE: 

If tank fill option is installed, verify that Tank Fil1/Foam Inject valve is 

in the Foam Inject position. 

4. 

Begin water flow to the desired discharge(s) by opening the appropriate valve. 

5. Increase engine speed until desired discharge pressure is obtained. 

NOTE: 

If system was not charg~ operator can prime system as described in step 

5 of Section 2-5, SYSTEM CHARGING FROM THE ON-BOARD 

FOAM CONCENTRATE STORAGE CELL. This step can be completed 

at any time during normal operation. System will prime from whichever 

foam source is selected at that time. 

3-1


B. Changing Foam Source 

1. With foam system turned o~ press 

MODE button until desired foam 

source appears on display screen. 

2. Press ENTER to select new foam 

source. 

3. Press AITOw Up or Arrow Down to select desired foam injection percentage, 

4. Press ENTER to accept new foam source and injection percentage selection. 

NOTE: 

When changing from any Class A foam source to any Class B foam 

source, or reverse, the system will automatically flush the system with 

water from the water pump for 15 seconds. Operator needs to verify 

proper valves are opened/closedepending on where flush water is to be 

discharged. Recommendedischarge location for flush water would be 

the desired water discharge or handline(s). 




the foam concentrate, improper proportioning and poor performance 

in a fire situation. Mixing of Class A and Class B foam concentrates 

may result in a chemical reaction that can create globules, which can 

clog orifices and cause system failure. 

C. Stopping Foam Solution Flow (Maintaining Water Flow) 

1. Turn foam system off by pressing the SYSTEM ON/OFF button on the display. 

2. Allow water to flush line(s) before closing water discharge valve(s). 

NOTE: Water will not flush foam pump unless Flush Mode is run through the foam 

control system. 

D. Priming Foam System (Manual) 

With water pump nlmling and foam 

system turned on, press MODE button 

until display reads: 

2. Press ENTER to accept Prime Mode. 

3-2


3, 

Verify proper valves are open/closed to prime to desired location. Calibrate- 

Flush/Foam Inject valve should be in CalibratelFlush position to prime through 

foam concentrate pump and discharge to ground. 

NOTE: If priming into the foam discharge manifold, the manifold drain valve 

should be opened to prevent pressure build up in the system. 

4. 

Press and hold ENTER for desired length of priming time. 

E. Flushing Foam System (Manual) 

1. With water pump running and foam 



2. Press ENTER to accept Flush Mode. 

3. Verify proper valves are open/closed 

to flush to desired location. Calibrate-Flush/Foam Inject valve should be in Foam 

Inject position to flush through foam/water discharge; or in Calibrate/Flush 

position to flush to ground. 

4. Press and hold ENTER for as desired length of flush time. 

NOTE: A sign that an adequate flush has been perfonned is when the white-soapy 

water from the handline becomes clear with no slippery feel. 

NOTE: If auxiliary foam pick-up was used, draft fresh water, in place of foam, 

through the pick-up tube while discharging for approximately 1-2 minutes 

before doing the flush procedure. 

5. After the system has been flushed, re-charge the system with the primary agent as 

described in Chapter 2 of this manual. 

A. Manual Mode Operation 

1. 

With water pump running and foam 



2. 

Press ENTER to accept Manual Mode. 

3-3


3. Using the Arrow Up and Down buttons, set the desired water flow. 

4. Press ENTER to accept the water flow setting. 

s. The system will return to the main display screen and turn the foam pump on at 

the desired foam injection set point. 

6. Verify proper valves are open/closed to pump concentrate to desired location. 

NOTE: 

Verify that water is being discharged through appropriate foam/water 

discharge( s) before engaging manual mode to prevent pressure build up in 

the foam system. 

B. Flowmeter Mode Operation 

NOTE: System will automatically return to flowmeter mode when truck power is 

turned off. 

1. 

With water pump nmning and foam 



NOTE: USE FLOWMETER message is 

only available when in Manual 

Operation. 

2. Press ENTER to accept flowmeter mode. 

~j:, The system will return to the main display screen and turn the foam pump on 

when the flowmeter reads a minimum 5 GPM of water flow. 

4. Verify proper valves are o~n/closed to pump concentrate to desired location. 

3-4. 

USING AUXILIARY PICKUP CONNECnON AS FOAM SOURCE 

A. Description 

1 The Husky 10 System allows for use of foam concentrates from a source other 

than the on-board tank(s) while fighting fires. When fighting a large fire, the 

foam concentrate tank capacity may be insufficient. A reserve supply of 

concentrate may be used without interrupting proportioning. This reserve supply 

may be from another truck, tanker or trailer, or from foam concentrate pails or 

drums. 

3-4

OPERAnNGPROCEDURES 

2 The auxiliary foam pickup also allows trucks carrying only one class of 

concentrate to fight fires using alternative foams without changing foam stored in 

the on-board tank. 

3. 

Foam concentrate supplied from an external source does not have to be 

compatible with the foam concentrate stored in the on-board tank(s). 

NOTE: Be certain to flush the foam system, including the au:xiliary foam pickup, 

after utilizing any concentrate other than the primary foam concentrate. 

Flushing procedure is described in section 3-2, E of this manual. 

B. Using Auxiliary Foam Pickup As Foam Source 

1. Attach draft hose to Foam Inlet connection on driver side pump panel. 

2. 

Open Foam Inlet valve on driver side pump panel. 

NOTE: 

When fIrst beginning to draft at low injection rates, it is recommended that 

operator prime the system as described in Section 3-2.D of this manual, or 

turn the percent rate up until foam fills the pick-up hose. 

3-5


THIS PAGE INTENTIONALLY LEFT BLANK 

3-6

DISPLAY MODE 

4-1. DISPLAY MODE 

A. By pressing the DISPLAY button during normal operation, the operator can scroll 

through the following infonnation: 

1 Current water flow through flowmeter: 

2. Cunent foam flow: 

3. Total water flowed during that incident: 

4. Total Class A foam used during that 

incident: 

Total Class B foam used during that 

incident: 

4-1

DISPLAY MODE 

THIS PAGE INTENTIONALLY LEFT BLANK 

4-2

SET UP & CALIBRATION PROCEDURES 

A. Set Up Mode 

1. Press MODE button until display reads: 

2. Press ENTER & Arrow Up and Arrow 

Down at the same time to enter the Set 

Up Mode screens. 

3. Press MODE to scroll through the Set Up Mode screens. 

A. Calibrate Flowmeter Mode 

1 While in the Set Up Mode screens, press 

MODE button until display reads: 

2. Press ENTER to accept. Display should read: 

CAL FLOWMETER 

100 GPM 

3. Attach the appropriate hose(s) and nozzle(s) to 1 or more foam/water discharge to 

obtain a known value of water flow of approximately 100 GPM and open the 

discharge valve(s). 

4. 

Press the Arrow Up or Arrow down button until the screen displays the correct 

water flow value. Press ENTER to begin calibration. 

5 When calibration is complete, display should read: 

CAL FLOWMETER 

500 GPM 

Attach the appropriate hose(s) and nozzle(s) to I or more foam/water discharge to 

6. 

obtain a known value of water flow of approximately 500 GPM and open the 

" 

discharge valve(s). 

Press the Arrow Up or Arrow down button until the screen displays the correct 

water flow value. Press ENTER to begin calibration. 

8. 

When calibration is complete, display should read: 

CALmRA TE 

FLOWMETER MODE 

5-1

SET UP & CALffiRA TION PROCEDURES 

B. Calibrate Foam Pump Transducer 

NOTE: 

The foam pump transducer must be calibrated before performing any foam 

system calibration procedures. 

1. While in the Set Up Mode screens, press 


2. Press ENTER to begin calibration. 

While calibration is nmning, display will 

read: 

RUNNING 

CALmRA nON 

3. When calibration is complete, display will read: 

CALmRATE FOAM 

PUMP TRANSDUCER 

C. Calibrate Class A Foam Mode 

NOTE: 

NOTE: 

Verify that draft hose is hooked up, Foam Inlet valve is open, foam pump 

is primed and foam source is set to Draft Class A or Draft Class B before 

beginning foam calibration. 

The most accurate calibration can be obtained using the actual foam 

concentrate intended for use at fire incident. 





in a fire situation. Mixing of Class A and Class B foam concentrates 



1 

While in the Set Up Mode screens, press 


2. 

Press ENTER to accept. Display should read: 

CALIBRATE FOAM A 

1.00 GPM 

5-2


NOTE: 

Verify proper valves are open/closed to calibrate to desired location. 

Calibrate-Flush/Foam Inject valve should be in CalibratelFlush position to 

discharge to ground or to recapture discharge in a bucket. 

3, Press ENTER to begin foam calibration at 1.00 GPM. Foam pump will nm for 

five minutes. 

4. Measure actual flow by either measuring the foam/water pick-up through draft 

hose or by measuring the discharge from the Calibrate-Flush/Foam Inject valve. 

5 When green Foam Pump On light turns off, enter the actual value of concentrate 

flowed using the Arrow Up or Arrow Down buttons. 

6. Press ENTER to accept value. 

7. Display should read 

CALffiRA TE FOAM A 

4.00 GPM 

8. Press ENTER to begin foam calibration at 4.00 GPM. Foam pump will nm for 

five minutes. 


hose or by measuring the discharge from the Calibrate-Flush/Foam Inject valve 

lO. When green Foam Pump On light turns off, enter the actual value of concentrate 



12. Display should read: 

CALIBRATE MODE 

CLASS A FOAM 

5-3

SET UP & CALmRA TION PROCEDURES 

D. Calibrate Class B Foam Mode 

NOTE: 

NOTE: 

Verify that draft hose is hooked up, Foam Inlet valve is open, foam pump 

is primed and foam source is set to Draft Cws A or Draft Class B before 

beginning foam calibration. 

The most accurate calibration can be obtained using the actual foam 

concentrate intended for use at fire incident. 





in a fire situation. Mixing of Class A and Class 8 foam concentrates 





2. Press ENTER to accept Display should read: 

NOTE: 

CALIBRATE FOAM B 

1.00 GPM 

Verify proper valves are open/closed to calibrate to desired location. 

Calibrate-Flush/Foam Inject valve should be in CalibratelFlush position to 

discharge to ground or to recapture discharge in a bucket 

3. Press ENTER to begin foam calibration at 1.00 GPM. Foam pump will nm for 

five minutes. 

4, Measure actual flow by either measuring the foam/water pick-up through draft 


5 When green Foam Pump On light turns off, enter the actual value of concentrate 


6 

Press ENTER to accept value 

7, Display should read: 

CALIBRATE FOAM B 

4.00 GPM 

5-4

SET UP & CALmRATION PROCEDURES 

8. 

Press ENTER to begin foam calibration at 4.00 GPM. Foam pump will run for 

five minutes. 



10. When green Foam Pump On light turns off, enter the actual value of concentrate 



12. Display should read: 

CALIBRATE MODE 

CLASS B FOAM 

E. Set Default Foam Source 

1. 



2. Press ENTER to accept. 

3. Press Arrow Up or Arrow Down to 

select either Tank A or Tank B as default. 

4. 

Press ENTER to accept selection. 

F. Set Class A Concentrate Default Percentage 

1. 





adjust default to desired setpoint. 

4. 

Press ENTER to accept new setpoint. 

5-5

SET UP &, CALffiRA nON PROCEDURES 

G. Set aass B Concentrate Default Percentage 




3 Press Arrow Up or Arrow Down to 

adjust default to desired setpoint. 

4. Press ENTER to accept new setpoint. 

H. Set Default System Units 





select either English or Metric units. 

4. Press ENTER to accept new selection. 

I. Set Automatic Flush Time 

NOTE: 

Automatic flush occurs whenever foam source is switched from a Class A 

concentrate source to a Class B concentrate source or reverse. 

1 





change setpoint. 

4. Press ENTER to accept new setpoint. 

5-6


J. Reset Foam Strainer Maintenance Reminder 

1 While in the Set Up Mode screens, press 


2. Press ENTER to reset counter. When counter has been reset, display will read: 

SERVICE COUNTER 

RESET 

K. Reset Water Strainer Maintenance Reminder 



2. 

Press ENTER to reset counter. When counter has been reset, display will read: 


RESET 

L. Reset Hydraulic Fluid Maintenance Reminder 

1, While in the Set Up Mode screens, press 


2. Press ENTER to reset counter. When counter has been reset, display will read: 


RESET 

5-7

SET UP & CALffiRAnON 

PROCEDURES 

M. Select Single or Dual Foam Tank System 





select Single Foam Tank System or Dual 

Foam Tank System. 

4. Press ENTER button to accept selection. 

N. Select Optional Tank Fill Settings 

1. 

While in the Set Up Mode screens, 

press MODE button until display 

reads: 


3. Press Arrow Up or Arrow Down to select Tank Fill Enabled or Tank Fill 

Disabled. 

4. Press ENTER button to accept selection. 

O. Check Current Software Revision 

1, 

While in the Set Up Mode screens, 

press MODE button until display 

reads: 

5-8

INSPECTION, MAINTENANCE AND REPAIR 

The procedures and recommended intervals in this chapter are based on normal operating 

conditions and may have to be modified to meet the existing conditions. Some 

environmental concerns may dictate that inspection and maintenance be performed at 

more frequent intervals. 

For various proportioning system components (water pump, discharge devices, valves, 

actuators, etc.) refer to that particular component's Operating and Maintenance Manual 

or Instruction Sheet. 

CAUTION: 

If, for any reason, the hydraulic reservoir shutoff valve is ever in the 

closed position, the hydraulic pump should be de-coupled from the 

water pump or the truck must be taken out of service. Failure to do 

so will result in severe damage to the hydraulic pump. 

6-2. 

TESTING AFTER SYSTEM MAINTENANCE 

If during the course of normal system maintenance, it becomes necessary to replace, 

repair, or modify system components, components parts, operating devices or equipment, 

the system must be tested to ensure proper operation before being placed back into 

service. 

NOTE: 

The services of a qualified field engineer to inspect the system and run the 

tests for start-up and the annual inspection can be provided. Additional 

details can be obtained by contacting Pierce Mfg. 

The foam system should be operated periodically to insure that the foam system is 

operational, and also to circulate the foam concentrate through the pump. This can be 

achieved two ways. The flfSt and preferred is periodic operation of the system in a 

nonnal discharge condition as described in Section 3-2 of this manual. 

The second method is to flow concentrate through the pump with the Calibrate- 

Flush/Foam Inject valve, catching the discharge and returning it to the on-board storage 

tank by one of the methods described in Chapter 2 of this manual. 

6-1

INSPECflON, MAINTENANCE AND REPAIR 

A. Characteristics: 

The system is delivered, charged with ISO 68 hydraulic oil. It is recommended that 

same or similar oil be used to maintain optimum efficiency and component life. If the 

vehicle has been subjected to extreme cold temperatures for extended periods of time, 

engaging the water pump will allow the hydraulic oil to WanD up before initiating 

operation of the Husky 10 system. 

B. Recommendations: 

U.S. Oil Multi-Vis 68R, Mobil DTEl6M ISO 68 or equivalent. 

WARNING: 

The hydraulic fluid used for cold weather applications may not 

function properly at higher temperatures, and must be changed 

to an appropriate recommended type for proper operation of 

unit. 

The hydraulic oil in the Husky 10 system is filtered through a replaceable filter 

typically located on the passenger side of the pumphouse area. 

CAUTION: Do not clean the inside of the filter canister with a rag or 

anything that might leave any type of particles on the filter. 

A. Filter Replacement. (Hydac PN 0055DOI0BN3HC or equivalent) 

Clean the area around the hydraulic filter canister with solvent cleaner and a rag. 

2 Remove the bottom of the filter canister using an open-end wrench. 

3 Insta1l the new filter element and tighten filter canister nut. 

6-6. IN -LINE Y -STRAINER MAINTENANCE 

The Husky 10 system is equipped with two strainers whose baskets should be 

inspected and cleaned on a bi-monthly basis. 

A. Foam Feed Line Y -Strainer 

There is a 1" Y -strainer located in the foam concentrate plumbing immediately 

before the inlet to the foam pump. The strainer is titted with a 20-mesh wire filter 

basket. 

6-2

INSPECfION, 

MAINTENANCE AND REPAIR 

2. This strainer is to prevent any debris from entering the foam pump and interfering 

with the work of the internal foam pump check valves. 

3 To clean this basket, unscrew the large nut located on the drop leg of the "Y". 

Remove the basket and inspect for foreign debris. If any is found, clean the 

basket with water and reinstall. Be certain that any gaskets are still in place 

before reinstalling basket and nut. 

B. Flush/Cooling Water Y -Strainer 

There is a 0.5" Y -Strainer located in the water line supplying water from the 

water pump to the hydraulic fluid cooler. This water is also used for flushing the 

foam concentrate pump and associated plumbing. The strainer is titted with a 40- 

mesh wire filter basket. 

2 This strainer is to prevent any debris from entering the hydraulic oil cooler and 

the foam pump and interfering with the work of the internal foam pump check 

valves. 

3, To clean this basket, unscrew the large nut located on the drop leg of the "Y". 

Remove the basket and inspect for foreign debris. If any is found, clean the 

basket with water and reinstall. Be certain that any gaskets are still in place 

before reinstalling basket and nut. 

A. After every use of the system, the following components and systems should be 

inspected and repaired/replaced as necessary: 

Hydraulic oil level and quality 

2 Hydraulic tubing/hoses for leaks, loose fittings, damage, etc 

3. Foam system plumbing leaks, loose fittings, hose damage, etc. 

6-3

INSPECfION, MAINTENANCE AND UP AIR 

THIS PAGE INTENnONALL Y LEFT BLANK 

6-4

~ 

I 

TROUBLESHOOTING 

A. The Husky 10 foam system is calibrated for both class A and B foam concentrates at 

Pierce Manufacturing, using the information supplied by the dealer at time of 

purchase. 

B. The water flowmeter and foam pump transducer are also calibrated at Pierce 

Manufacturing prior to delivery of the fIfe apparatus to the end user. 

7-2. TROUBLESHOOTING MATRIX 

1. No display messages or 

lights on Foam System 

Control Head 

No power to Control Head 

Turn on Truck Battery 

Verify wiring harness and 

plugs are pinned correctly 

2. Control Head has power 

but no display messages 

No communication with 

Foam System Controller 

Verify Control Head is 

plugged in 

Verify wiring harness and 

plugs are pinned correctly 

I 

I Verify Control Head is 

3. Foam pump won't 

operate 

4. Foam pump won't 

prime 

Hydraulics not working 

-- - 

Tank valves not switching 

oro1;)e!,ly 

Foam pump transducer 

(L VDT) not ca1ibrat~ 


(L VDT) not sending signal 

Draft mode - Auxiliary 

Foam Inlet valve not ODeD 

Proportional valve not 

operating correctly 

.~ 


(L VDT) not calibrated 


(k VDT) not sending signal 

lu ed in 

Check hydraulic pump is 

. with water urn 

Verify oil in tank and that 

shutoff valve is wired 

-open 

Verify tank valve positions 

and wiring 

Run transducer calibration 

throUg;h Set Up Mode 

Verify wiring connections 

and voltage/ resistance 

readiniZs- 

Open Auxiliary Foam Inlet 

valve - - 

Venfy proportional valve 

control plugs wired and 

installed correctly 

Run transducer calibration 

throu~ Set Up Mode 

. - .-- 

Verify wiring connections 

and vol~e/ resistance 

7-1

TROUBLESHOOTING 

5. Hydraulic relief opening 

on hydraulic manifold block 

6. Tank fill won't operate 

(shuts off immediately) 

7. Low foam pressure, 

system running lean 

8. Foam in water tank 

9. Foam system hydraulics 

overheating 

Proportional valve not 

operating correctly 

Hydraulic system plugged 

High level float switch 

stuck in closed position 

Foam Y -strainer clogged 

Foam cell leaking internally 

Foam injection manifold 

check valve defective 

Flush circuit and check 

valve defective 

Foam system hydraulics 

cooling system not working 

- no c~ling water 

-readings 

Verlfy proportional valve 

control plugs wired and 

installed correctly 

Check hydraulic filter for 

debris 

Check manifold block 

COnlDonents for obstructions 

Verify switch is closed 

when tank is full, open 

when less than full 

Remove and clean Y- 

strainer 

Contact UPF for tank repair 

/ replacement -- 

Verify-Repair/replace check 

valve 

Verify flush circuit and 

check valve function 

Verify water supply from 

water pump to hydraulic 

cooler is open and ~win~ 

Hydraulic cooler is plugged Repair / replace hydraulic 

cooler heat exchanger 

10. Fluid coming out of 

weep hole on foam pump 

Bad seal in foam pump Repair foam pump 

II.Reset F oam/W ater Maintenance reminder Perfonn required 

strainer, Hydraulic fluid 

maintenance and reset 

counter comes on disDlav 

counter as described on 5-7 

12. Water in hydraulic fluid Defective oil cooler Unhook and bypass oil 

connection to cooler, 

pressurize water pump and 

check cooler for leaks 

Excessive pressure washing 

near filler vent cap 

Clean hydraulic system, use 

caution when pressure 

was~g around filler cap- 

7-2

Husky 10 Foam

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