ATTIX 751-01/-11 - Nilfisk-ALTO

ATTIX 751-01/-11/-21 

ATTIX 751-2M/-0H 

ATTIX 761-21XC/-2MXC 

ATTIX 763-21ED/-2MED 

ATTIX 791-21/-2M/B1 

ATTIX 751-61/-71 

ATTIX 19 Gallon/-AE 

ATTIX 19 Gallon/AS/PE2 

Repair Manual

A. Safety instructions 

B. Technical data 

C. Components 

D. Operation 

E. Troubleshooting 

F. Spare parts 

G. Tools 

H. Wiring

Nilfisk 

ALTO 

Preface .....................................................................7 

Symbols used to .....................................................................7 

mark instructions 

A Safety instructions .....................................................................8 

B Technical data .....................................................................9 

C Components 1 Trolley with container and adapter ring....... 12 

2 Cleaner heads............................................. 12 

3 Filter cleaning.............................................. 13 

4 Suction turbines.......................................... 14 

5 Electrical components................................. 15 

D Operation 1 Automatic filter cleaning 

(Attix 761/-21XC/-2M / 763-21ED/-2MED 

19 Gallon/AS/P2)......................................... 17 

2 EC drive (Attix 791-21/-2M/B1)....................17 

3 EC-3 electronics (Attix 791-21/-2M/B1)........17 

4 Electronic starter, 

EC-3 electronics (Attix 791-21)....................17 

5 Electronic flow sensor (Attix 791-2M/B1).....17 

6 Layout of electronic flow sensor EC 

(Attix 791-2M/B1).........................................18 

7 Electronic soft start 

(Attix 751-01/-11, Attix 19 Gallon)................ 18 

8 Electronic starter with speed control 

(Attix 751-21)............................................... 18 

9 Electronic flow metering (Attix 751-0H)....... 18 

10 Electronic flow metering (Attix 751-2M)...... 18 

11 Electronic magnet control (Attix 761-21XC, 

763-21ED, 9 Gallon/AS/PE2)...................... 18 

12 Electronic flow sensor XC (Attix 761-2MXC, 

763-2MED).................................................. 18 

13 Turbine/temperature monitoring 

(Attix 751-61/-71, 19 Gallon AE).................. 19 

14 Electronic level control 


15 Layout of electronic level control 

(Attix 751-61/-71, 19 Gallon AE). 21 

E Troubleshooting 1 ESD (electrostatic discharge)..................... 22 

Attix7_ver.1.0_140105 

Contents 

2 Troubleshooting on unit............................... 22 

2.1 Unit will not work (all units with 

brush motor). ............................................ 22 

3/59




Contents 

2.2 Unit will not work (all units with 

EC drive)......................................................23 

2.3 Warning sound! (all cleaners)...................... 24 

3 Trolley/container...........................................25 

3.1 Removing/fitting castors (all models except 

Attix 751-71)................................................ 25 

3.2 Removing/fitting wheels (all models except 


3.3 Removing/fitting feet (Attix 751-71)............. 25 

3.4 Removing/fitting wheels (Attix 751-71)........ 26 

3.5 Removing/fitting grips (all models except 


3.6 Removing/fitting lock (all models)................ 26 

3.7 Removing/fitting grip with tensioning band 

(all models).................................................. 27 

3.8 Removing/fitting belt (all models)................ 28 

3.9 Removing/fitting pump (Attix 751-61/-71, 

19 Gallon AE).............................................. 29 

3.10 Removing/fitting non-return pipe 


4 Cleaner head............................................... 30 

4.1 Removing/fitting grip (Attix 751-61/-71, 

19 Gallon AE).............................................. 30 

4.2 Removing/fitting grip (Attix 751-01/-11/-21, 

751-2M/-0H, 791-21/-2M/B1, 19 Gallon)..... 30 

4.3 Removing/fitting grip (Attix 761-21XC/-2M 

XC, 763-21ED/-2MED, 19 Gallon./AS/PE2).30 

4.4 Removing/fitting hood (Attix 751-01/-11/-21/ 

-2M/-0H, 791-21, 751-61/-71, 19 Gallon AE)30 

4.5 Removing/fitting hood (Attix 761-21XC/-2MXC, 

763-21ED/-2MED, 19 Gallon/AS/PE2)........ 30 

4.6 Removing/fitting cooling air filter 

(Attix 791-2M/B1).........................................31 

4.7 Removing/fitting hood (Attix 791-2M/B1)..... 31 

4.8 Removing/fitting locking clamps (Attix 

751-01/-11/-21/-2M/-0H, 761-21XC/-2MXC, 

763-21ED/-2MED, 751-61/-71, 

19 Gallon AE, 19 Gallon/AS/PE) .................32 

4.9 Removing/fitting locking clamps 

(Attix 791-21)............................................... 32 

4.10 Removing/fitting locking clamps 

(Attix 791-2M/B1).........................................32 

5 Suction turbine.............................................33 

5.1 Removing/fitting clamping plate 

(Attix 751-01/-11/-21/-2M/-0H/-61/-71, 

19 Gallon AE)............................................... 33 

5.2 Removing/fitting clamping plate (Attix 

761-21XC/-2MXC, 763-21ED/-2MED, 

19 Gallon/-AE)............................................. 33 


(Attix-791-21)............................................... 33 


(Attix 791-2M/B1).........................................33 

4/59




Contents 

5.5 Removing/fitting bracket for filter tightener 

(Attix 761-21XC/-2MXC, 

763-21ED/-2MED, 19 Gallon/AS/PE2)........ 33 

5.6 Removing/fitting hose for level monitoring 

(Attix 761-21XC/-2MXC, 

763-21ED7-2MED, 19 Gallon/AS/PE, 

751-61/-71, 19 Gallon AE)........................... 33 

5.7 Removing/fitting motor carbon brushes 

(all models except with EC drive)................ 34 

5.8 Removing/fitting motor (all models except 

with EC drive).............................................. 34 

5.9 Checking motor, removing/fitting motor 

(Attix 791-21/-2M/B1)...................................34 

6 Automatic filter cleaning 

(Attix 761-21XC/-2MXC, 763-21ED/-2MED, 

19 Gallon/AS/PE2).......................................34 

7 Electrical...................................................... 35 

7.1 Removing/fitting electrical components....... 35 

7.2 Removing/fitting power cord (Attix 751-01/-11 

-21/-0H/-2M/-61/-71, 791-21, 19 Gallon AE)35 

7.3 Removing/fitting power cord (Attix 761-21XC/ 

-2MXC, 763-21ED/-2MED, 19 Gal/AS/PE2).35 

7.4 Removing/fitting socket (Attix 791-2M/B1)...35 

7.5 Removing/fitting power cord 

(Attix 791-2M/B1).........................................36 

7.6 Checking electronic flow metering EC in 

manual mode (Attix 791-2M/B1).................. 37 

7.7 Checking electronic flow metering EC in 

automatic mode (Attix 791-2M/B1).............. 38 

7.8 Checking flow sensor detection (performance) 

of electronic flow metering 

(Attix 751-2M/-0H, 761-2MXC, 763-2MED, 

791-2M/B1).................................................. 39 

7.9 Checking and calibration (adjustment) 

of flow sensor (Attix 751-2M/-0H, 761- 

2MXC, 763-2MED, 791-2M/B1)...................39 

7.10 Removing/fitting electronic flow metering EC 

(Attix 791-2M/B1).........................................39 

7.11 Checking electronic level control in manual 

mode (Attix 751-61/-71,19 Gallon AE)......... 40 

7.12 Checking electronic level control in 

automatic mode (Attix 751-61/-71, 

19 Gallon AE)...............................................41 

7.13 Calibrating electronic level control 


7.14 Removing/fitting electronic level control 


7.15 Checking temperature sensor 


7.16 Removing/fitting temperature sensor/ 

flow sensor (Attix 751-61/-71/-2M/-0H, 

19 Gallon AE, 763-2MED, 791-2M/B1).........44 

5/59




Contents 

7.17 Checking, removing/fitting electronic soft 

start (Attix 751-01/-11, 19 Gallon)................ 44 

7.18 Checking, removing/fitting electronic EA 

with speed control (Attix 751-21)................. 44 

7.19 Checking, removing/fitting electronic flow 

metering (Attix.751-2M/-0H)........................ 44 

7.20 Checking, removing/fitting electronic magnet 

control (Attix 761-21XC, 763-21ED, 

19 Gallon/AS/PE2).......................................44 

7.21 Checking level monitoring 

(Attix 761-21XC/-2MXC, 763-21ED/-2MED, 

19 Gallon/AS/PE2)......................................44 

7.22 Checking, removing/fitting electronic flow 

sensor XC (Attix 761-2MXC, 763-2MED).... 45 

7.23 Potentiometer (hose diameter) 

(Attix 751-2M, 761-2MXC, 263-2MED, 

791-2M/B1).................................................. 45 

7.24 Checking piezo buzzer (Attix 751-2M/-0H, 

761-2MXC, 763-2MED, 791-2M/B1)............45 

7.25 Checking, removing/fitting electronic EA. 

with speed control EC-3 (Attix 791-21)........ 45 

7.26 Checking, removing/fitting electronic EC-3 

(Attix 791-21/-2M/B1)...................................45 

7.27 Checking, removing/fitting RFI filter/ 

varistor (Attix 791-21/-2M/B1)......................45 

F Spare parts ............................................................................. 46 

G Tools 1 Special-purpose tools.................................. 47 

H Wiring 1 Wiring diagram (Attix 751-01)...................... 48 

2 Wiring diagram (Attix 751-11, 19 Gallon).....49 

3 Wiring diagram (Attix 751-21)...................... 50 

4 Wiring diagram (Attix 751-2M)..................... 51 

5 Wiring diagram (Attix 751-0H)..................... 52 

6 Wiring diagram (Attix 761-21XC, 

763-21ED)................................................... 53 

7 Wiring diagram (Attix 761-2MXC, 

763-2MXC).................................................. 54 

8 Wiring diagram (Attix 791-21)...................... 55 

9 Wiring diagram (Attix 791-2M/B1)................56 

10 Wiring diagram (Attix 751-61, 

19 Gallon AE)...............................................57 

11 Wiring diagram (Attix 751-71)...................... 58 

12 Wiring diagram (Attix 19 Gallon AS/PE2).... 59 

6/59



In this manual you will find 

the essentials you need 

to know when repairing 

wet and dry cleaners of 

the Attix 7 and 19 Gallon 

series. 

When carrying out repairs, 

make sure you 

have a suitable workbench 

or the like with the 

necessary power supply 

available. 

If you determine an error 

in operation, be sure to 

refer the customer to the 

user manual. 

Symbols used to mark instructions 

Attix7_ver.1.0_140105. 

Preface 

A fault in the equipment 

can have a number of causes. 

Chapter E Troubleshooting 

will help you 

here. 

Use the illustrated spare 

parts lists for your repairs. 

These show you the location 

of the individual parts 

and the sequence in which 

they are assembled. 

Read the technical information 

sheets. These will 

tell you about any technical 

modifications made 

after publication of this 

repair manual. 

☞ 

Technical information 

sheets are a supplement 

to the spare parts list until 

a follow-on publication. 

Repair manuals and technical 

information sheets 

should be available at the 

site where repairs are carried 

out. Further repair 

manuals of the Attix series 

may be necessary for 

repairs to the equipment. 

It is not permitted to give 

them to third parties. 

Use original Nilfisk 

ALTO spare parts only! 

Safety instructions marked 

with this symbol in 

this manual must be observed 

to prevent danger 

to persons. 

This symbol is used to 

mark safety instructions 

that must be observed to 

prevent damage to the 

equipment and degradation 

of performance. 

This symbol indicates tips 

and instructions to simplify 

work and to ensure safe 

operation. 

7/59



For your own safety 

ESD (electrostatic 

discharge) 


Safety instructions 

Repairs should only be 

made by someone who 

has received proper 

instructions for the job 

or who is a qualified electrician. 

A 

Observe national safety 

directives and regulations 

for the electrical engineering 

trade, in particular: 

IEC 60335-2-69 

EN 60335-2-69 

DIN VDE 105 part 1: 

operation of electrical 

power installations 

DIN VDE 0701/0702: 

repair, modification and 

testing of electrical installations 

Before starting the equipment, 

be sure to read the 

accompanying service 

manual, and keep it close 

as ready reference. 

The equipment should 

only be used by persons 

who have been instructed 

in its use and are authorized 

to do so. 

Observe the following ESD precautions before any 

repair of or near electronic parts: 

• Touch the protective conductor to discharge your own 

body. 

• Possibly wear an anti-static wrist strap. 

• Use a conducting floor or tabletop. 

• Never touch a circuit board or electronic components, 

always hold them by the plastic or insulation. 

• Transport electronic parts in conductive packaging 

(e.g. special ESD packages). 

8/59 

Safety Instructions


Version / 

Type 

Attix 

751-01 751-21 751-2M 

National 

Variants 

ZA EU DK CH GB 110V GB 

751-11 751-0H 761-21 XC 

230V 

EU EU EU DK EU DK 

GB 

110V 

GB 

230V 

Voltage V 230 110 230 

110 230 

Frequency Hz 

50/60 

Fusing A 16 10 25 13 16 

10 16 10 25 13 

Power consumption PIEC W 

1200 

1000 

1200 

Connected load for 

appliance socket 

W - 2400 1100 1550 1800 2400 

- 2400 1100 1550 1800 

Total connected load W - 3600 2300 2750 3000 3600 

- 3600 2300 2750 3000 

Power cord lenght m 7,5 

10 7,5 

10 

Electrical data 

Protection 

Dimensions 

and wight 

Unit-specific 

data 

Power cord type 

H05RR- 

F3G0,75 

Protection class II 

Protection category 

RFI suppression 

Width mm 

Depth mm 

Hight mm 

Weight kg 

Tank volume l 

Air volume flow (max) l/min 

Static wate lift (max) Pa 

Sound pressure level at 

1m, EN 60704-1 

dB(A) 

Operating noise dB(A) 

H05RR- 

F3G1,5 

H05RR- 

F3G1,0 

H07BQ-F 

3G2,5 

H05RR- 

F3G1,5 

H07RN- 

F3G1,5 

I II 

IPX4 

EN 55014-1 

580 

605 

970 

H05RR- 

F3G1,0 

H05RR- 

F3G1,5 

H05RR- 

F3G1,0 

25 27 

70 

3600 3100 

23000 20000 

64 60 

57 

Technical data 

H07BQ-F 

3G2,5 

I 

3600 

23000 

64 

H05RR- 

F3G1,5 

9/59 



Technical Data 

B


Version / 

Type 

National 

Variants 

Electrical data 

Protection 

Dimensions 

and wight 

Unit-specific 

data 

Protection class 



Attix 763-21 ED 761-2M XC 763-2M ED 791-21 791-2M/B1 751-61 751-71 

EU EU EU EU EU 

GB 

110V 

GB 

EU DK CH 

230V 

EU 

Voltage V 230 230 230 230 230 110 230 230 230 

Frequency Hz 

50/60 

Fusing A 16 

25 13 16 10 16 

Power consumption PIEC W 

1200 



W 2400 1550 1800 650 

Total connected load W 3600 

2750 3000 1850 

Power cord lenght m 7,5 

10 7,5 10(FI) 


H05RR- 

F3G1,5 

H07RN- 

H07BQ-F 3G2,5 

F3G1,5 

H05RR- 

F3G1,5 

H05RR- 

F3G1,0 

H07RN- 

F3G1,5 

Width mm 580 

480 

Depth mm 605 

510 

Hight mm 1284 970 1280 970 

875 

Weight kg 17 27 17 25 

33 31 

Tank volume l 30 70 30 

70 

Air volume flow (max) l/min 

Static wate lift (max) Pa 


1m, EN 60704-1 

dB(A) 


I 

IPX4 


3600 

23000 

64 

57 


10/59 




B


Protection Electrical Data 

Version / 

Type Attix 

19 Gallon 19 Gallon-AE 

19 Gallon-AS/PE2 

Voltage V 

120 

Frequency Hz 

60 

Fusing A 

15 

Power consumption HP 1,4 1,1 

1,4 



HP 0,5 0,8 

0,5 

Total connected load HP 

1,9 

Power cord lengt ft 25 35 

25 

Dimensions 

and weight 

Unit-specific 

data 


Protection class 



SJTW-A 

AWG14/3 

SJTW-A 

AWG14/3 

Width in 

23 

Depth in 

24 

Height in 

38 

Weight ib 55 73 

60 

Tank volume gal 

19 

Volume flow (air) cfm 

Static water lift in 


1m EN 60704-1 

dB(A) 


SJTW-A AWG14/3 

I 

IPX4 


127 

93 

64 

57 


11/59 




B



1 Trolley with container and adapter ring 

1) Base frame 

2) Adapter ring 

3) Container 

4) Belt 

2 Cleaner heads 


Components 

1 

Attix 751-01,-0H Attix 751-11/-21, Attix 19 Gallon 

Attix 761-21XC 

Attix 791-21 

4 

3 

2 

C 

Attix7 3516 

Attix5 0602 Attix5 0601 

12/59 

Components



Attix 751-2M 

Attix 761-2MXC 

Attix 763-2MED 


Components 

Attix7 3517 

Attix 19 Gallon/AS/PE2XC 

Attix 791-2M/B1 Attix 751-61/-71 

Attix 19 Gallon AE 

3 Filter cleaning All units with automatic filter cleaning. 

C 

Attix5 2903 Attix7 3508 

Attix7 3608 

Filter cleaning with the Attix 7 is the same as for the 

Attix 560-XC (see repair manual Attix 550/560, section 

“Components” page 13). 

13/59 

Components



4 Suction turbines 


Components 

Attix 751-01/-11/-21/-2M/-0H/-61/-71 

Attix 19 Gallon/-AE 

Attix 761-21XC/-2MXC 

Attix 763-2M ED 

Attix 19 Gallon/AS/PE2XC 

Attix 791-21 

Attix 791-2M/B1 

C 

Attix5-0445 

Attix5-2913 

Attix EC-2809 

14/59 

Components



5 Electrical components 

Electronic level control 

Attix 751-61/71 


Components 

Attix7 3634 

Electronic flow metering EC 


The following Attix 7 models are fitted with the same electronic circuitry used in 

other units: 

C 

Attix7 3631 

Electronic Electronic 

See section 

Electronic Electronic flow magnet Electronically "Components" in 

Attix soft start EA metering contol identical to Attix repair manual 

751-01/-11 

550-01, Attix 550/560 

19 Gallon X 

12 Gallon page 14 

751-21 

550-21, Attix 550/560 

X 

12 Gallon RDF page 14 

751-2M 

Attix 550/560 

X 550-2M/-2H page 14 

751-0H 

Attix 550/560 

X 550-0H page 14 

761-21XC, 

763-21ED, 

560-21XC, Attix 550/560 

19Gallon/AS/ 

X 12 Gallon RDFD page 14 

761-2M/XC, 

PE 

Attix 550/560 

763-2M/ED X 560-2MXC/-2HXC page 14 

791-21 

590-21, Attix 590-21 

X 

12 Gallon EC page 8 

15/59 

Components



GFCI circuit-breaker 

Attix 19 Gallon-AE 

Submersible pump 

Attix 751-61/-71 

Attix 19 Gallon AE 


Components 

Attix7-2360 

PRCD circuit-breaker 

Attix 751-71 

C 

Attix7-3640 

Attix7-3638 

16/59 

Components



The following Attix 7 functions are identical to other models: 

1 

2 

Attix 

Function of automatic 

filter cleaning system 

Function of EC.drive 

5 Electronic flow sensor EC (Attix 791-2M/B1) 

Alto no.: 302001710 

(200–230 Vac/50–60 Hz) 


(100–120 Vac/50–60 Hz) 


761-21XC/-2MXC 

763-21ED/-2MED 19 791-21 /- 

Gallon AS/PE2 2M/B1 

X 

Operation 

Several functions are 

integrated on this circuit 

board: 

- M a i n s w i t c h 

Man - 0 - Auto ‘ 

- Speed control 

- Remote control of EC 

drive 

- Soft start 

- Automatic starter for 

electrical tools 

- Flow detection by flow- 

sensor 

- Setting of different hose 

diameters 

LED functions: 

Green LED flashes: 

unit on standby 

Green LED on: 

flow > 22 m/s 

791-21 /- 

2M/B1 791-21 

3 

Technical description 

of electronic EC-3 X 

4 

Technical description 

of electronic EA. EC-3 X 

X 

Yellow LED on: 

flow > 20 m/s and < 22 

m/s 

Red LED on: 

flow < 20 m/s plus buzzer 

sounds 

Function 

identical to Attix 

D 

see section 

"Operation" in 

repair manual 

560-21/-2M/-2H, 

12 Gallon RDFD Attix 550/560 

590-21, 

12 Gallon EC Attix 590-21 

590-21, 


590-21, 


Main switch, speed control, 

automatic starter: 

as described in Attix 

550/560 repair manual 

section D. 

Soft start: 

the motor always makes a 

soft start. 

Operating data: 

saved operating data can 

be read out on the Alto terminal 

(no. 301 000 383 for 

operating data retrieval). 

Flow sensor: 

as described in Attix 

550/560 repair manual, 

section D. 

17/59 

n 

Operatio



6 Layout of electronic flow sensor EC (Attix 791-2M/B1) 

L1 

Powe r line 

N 

eSped 

potentiometer Mai n switch Attix7_ver.1.0_140105 

Solderi ng 

jumper JS1 

Motor 

terminal Terminal flow sensor 

302000428 Terminal 

compressed air 

flow monitor Termin al 

piezo 

buzzer The following Attix 7 functions are identical to other models: 

Attix 

7 Technical 

description of 

electronic 

softstart X 

8 Technical 


electronic 

automatic starter. 


19 Gallon 751-21 751-0H 751-2M 

X 

Operation 

761-21XC 

763-21ED 

19 Gal./AS/PE2 

761-2MXC 

763-2MED 

Plug-in jumper 

self-calibration 1 6 

Connector for 

re mote control of EC drive 

Function 

identical to 

Attix 

LE D red 

LED yellow 

LED green 

Hose 

diameter potentiometer Operating 

data 

readout Calibration button 

D 

L1 

Socket 

outlet litz wire 

N 

See section 

"Operation" in 

repair manual 

550-01 

12 Gallon Attix 550/560 

550-21 

12 Gal.RDF Attix 550/560 

9 Technical 


electronic flow 

measurment 

10 

X 550-0H Attix 550/560 

Technical 



measurment X 550-2M/-2H Attix 550/560 

11 Technical 


electronic magnet 

control X 

12 Technical 



measurement XC X 

550-21 

12 Gal.RDFD Attix 550/560 

560-2MXC/- 

2HXC Attix 550/560 

18/59 

n 

Operatio



13 Turbine / temperature monitoring (Attix 751-61/-71,19 Gallon AE) 

14 Electronic level control 

(Attix 751-61/-71, 19 Gallon AE) 


(200–230 Vac/50–60 Hz) 

Alto no.: 302001711 

(100–120 Vac/50–60 Hz) 

Several functions are integrated 

on this circuit 

board: 

- Main switch Pump - 

Auto - 0 - Man 

- Speed control in manu 

al 

- Soft start 

- Level control 

- Turbine temperaturemonitoring 


Operation 

D 

A sensor in the exhaust air duct (like flow sensor) 

measures the temperature of the air from the turbine. 

If the turbine reaches a temperature of more than 

85°C, motor speed is reduced. 

Main switch: 

this allows selection of 

three modes. 

Pump: 

momentary contact for 

emptying the container. 

One-time operation 

causes the pump to run for 

30 s. 

Man: 

the turbine immediately 

starts. 

Auto: 

the turbine and pump are 

controlled as a function of 

the level. 

Speed control: 

the integrated speed control 

only works in Man 

mode. The control range 

is 90° to 130°. 

Advantages: 

- Optimal matching of 

suction capacity to the 

application 

- Prolonged turbine service 

life 

- Reduced noise emission 

- Power savings 

LED functions: 

Green LED (D2) on: 

operating voltage applied 


pump on 


motor on 

Red LED (D3) flashes: 

microprocessor working 

Red LED (D5) on: 

level - turn off motor 

Yellow LED (D4) on: 

level - turn on pump 

Operating data: 

saved operating data can 

be read out on the Alto terminal 

(no. 301 000 383 for 

operating data retrieval). 

Continued on page 20 

19/59 

n 

Operatio




Operation 

D 

Level control: 

Level control by means of a pressure sensor is implemented 

to optimize working with the equipment. The level 

in the container is metered in a rubber baffle pipe.The 

pressure sensor measures the difference in pressure 

between the container and the baffle pipe. Rising 

water level increases the pressure in the pipe. The pressure 

in the baffle pipe increases linearly with water level. 

Man mode: 

The electronic circuitry cuts out the turbine upwards of 

a defined pressure (water level), and remains in this 

status until the cleaner is turned off and the container 

emptied. The pump cannot be started in manual 

mode. The power of the turbine can be altered by 

speed control. 

Auto mode: 

Only the suction turbine runs when there is no water in 

the container. When the container fills with water, the 

pump is turned on. If more water flows into the container 

than the pump can convey out of the container, the level 

continues to rise. To prevent overfilling, the suction turbine 

is cut out at maximum level. As soon as the water level 

is significantly reduced by the pump, the suction motor 

is cut in again. Upon total emptying of the container, 

the pump is cut out with a time delay. 

Pump mode: 

The Pump switch setting is a momentary contact (automatic 

reset). One-time actuation causes the pump to 

work for 30 s. This function can be used to completely 

empty the container. At the same time this is a safeguard 

against the pump running when it is dry. 

20/59 

n 

Operatio



15 Layout of electronic level control (Attix 751-61/-71, Attix 19 Gallon AE) 

LED yellow Lev el pump 

on (D4) 

LED red 

Motor off 

(D5) 

Terminal 2 

Motor 

LE D green Pump on 

(D6) 

Calibration button 

B2 

Pressure sensor Attix7_ver.1.0_140105 

eSped 

potentiometer Temperature 

sensor 

Operation 

L ED green Moto r on ( D 7) 

Read out 

operating 

data 

N 

Socket 

terminal 

Pump 

LE D green 

(D2) 

N 

Power line Reserve. LED 

L1 

L1 

LED re d(D 3) 

fIno 

Terminal 1 

Motor 

D 

21/59 

n 

Operatio




E 

1 ESD (electrostatic discharge) - Touch the protective con 

ductor to discharge sta 

tic from your own body. 

- Possibly wear an antistatic 

wrist strap. 

- Use a conductive floortabletop. 

- Never touch a circuit 

board or electronic com 

ponents, always hold 

2 Troubleshooting on unit 

Observe the following 

ESD precautions before 

any repairs to electronic 

circuitry: 

2.1 Unit will not work 

(all units with brush motor) Start: 

line voltage must be present 

and plug must be plugged 

in. 

Voltage applied to 

switch? 

Yes 

Do electronics work? 

Yes 

Check plug and power 

cord, replace if 

necessary. 

Replace electronics. 

Does motor work? No Repair or replace motor. 

Yes 

Troubleshooting 

No 

No 

Does cleaner work? 

them by the plastic or in 

sulation. 

- Transport electronic 

parts in conductive pa 

ckaging (e.g. Special 

ESD packages). 

No 

Conduct safety chec k. 

22/59 

Yes 

Troubleshooting



2.2 Unit will not work (all units with EC drive) 

Voltage applied to 

switch? 

Yes 

Voltage applied to EC- 

3 electronics? (See 

check of EC-3 

electronics) 

Yes 

Do EC-3 electronics 

work? (See check of 

EC-3 electronics) 

Yes 

Does EC motor work? 

Yes 



No 

No 

No 

No 

Start: 

line voltage must be 

present and plug must be 

plugged in. 

Check plug and power 

cord, replace if 

necessary. 

Check electronics/ 

board and RFI filter, 

replace if necessary . 

Replace EC-3 

electronics. 

Check EC motor, 

replace if necessary. 

Does cleaner work? 

No 

E 

Cond uct safety check. 

23/59 

Yes 

Troubleshooting



2.3 Warning sound! 

(all cleaners) 

Remove hose from container 

fitting. 

Warning still 

sounds. 

Remove filter bag from 

container. 

Warning still 

sounds. 

Check filter, replace if 

necessary. 

Warning still 

sounds. 

Check flow sensor, replace 

if necessary. 

Warning still 

sounds. 

Check flow sensor detection 

(function), i.e. 

electronic flow metering, 

replace electronics 

if necessary. 

Warning still 

sounds. 



Warning 

gone. 

Warning 

gone. 

Start: 

switch on “I” for full power, potentiometer 

set to correct hose diameter, 

unit in normal cleaning mode. 

Check adjustment of 

flow sensor, recalibrate 

if necessary. 

Check if hose or 

nozzle is 

clogged. 

Insert new filter 

bag. 

No 

E 

Conduct safety 

check. 

Performance check of 

flow sensor: OK? 

24/59 

Yes 

Troubleshooting



3 Trolley/container 

3.1 Removing/fitting castors (all models except Attix 751-71) 

3.2 Removing/fitting wheels (all models except Attix 751-71) 

3.3 Removing/fitting feet (Attix 751-71) 



1 

1 

Attix7 3647 

Attix7 3648 

1 

Attix7 3649 

E 

1. Use an Allen key (5 mm) 

to undo the countersunk 

head screw (1), and remove 

the castor. 

2. Fit in the reverse order. 

1. Lever off the wheel cap 

(1) with a screwdriver, and 

remove the wheel. 


1. Take the container out 

of the base frame, and 

raise the frame by laying 

the handle on the floor. 

2. Unscrew the nut (1), 

and remove the foot with 

the screw. 


25/59 

Troubleshooting



3.4 Removing/fitting wheels (Attix 751-71) 

3.5 Removing/fitting grips (all models except Attix 751-71) 

3.6 Removing/fitting lock (all models) 



1 

Attix7 3650 

☞ 

1 

1 

1 

2 

1 

1 

1 

1 

Attix7 3652 

Attix7 3655 

E 

1. Lever off the wheel cap 

(1) with a screwdriver. 

2. Lever the clamping ring 

(2) off the axle with a 

screwdriver, and remove 

the wheel. 


Do not push the clamping 

ring too far onto the axle 

otherwise the wheel will 

not turn freely. 

1. Undo the six screws (1) 

with a Phillips screwdriver, 

and remove the grips. 


1. Lever off the lock (1) 

with a screwdriver. 

2. Fit in the reverse order, 

pressing the lock (1) firmly 

over the latch so that you 

hear it snap into place. 

26/59 

Troubleshooting





3.7 Removing/fitting grip with tensioning band (all models) 

1 

7 

1 

7 

5 

4 

2 3 

6 

7 

1 

Attix7 3657 

1 

Attix7 3659 

7 

Attix7 3660 

Attix7 3661 

E 

1. Take the cleaner head 

with the adapter ring off 

the container, and lift the 

container out of the base 

frame. 

2. Mark (1) the position of 

the grip (4) and the facing 

stop (5) on the container. 

3. Undo the screw (2) on 

the tensioning band (3) 

with a screwdriver, and remove 

the grip (4) and tensioning 

band (3). 


placing the grip (4) and 

stop (5) between the markings 

and lightly tightening 

the screw (2) on the tensioning 

band (3). 

5. Set the container in the 

base frame, and lock it in 

place. 

6. Align the grip (4) and 

stop (5) on the container in 

the base frame (7), and 

firmly tighten the screw (2) 

on the tensioning band 

(3). 

☞ 27/59 

Note: 

The contact faces of the 

contact spring (6) must be 

clean and free of corrosion. 

Troubleshooting



3.8 Removing/fitting belt (all models) 

3 

6 

6 

7 


4 

4 


2 

1 

Attix7 3663 

Attix7 3662 

☞ 

E 





frame. 

2. Mark the position of the 

belt on the container (1). 

3. Take out the C-coupling 

(2) with a long screwdriver 

(only cleaners used by fire 

brigades). 

4. Thread a normal length 

of cord (3) or the like (60- 

80 cm) through one of the 

loops (4) of the tensioning 

device, and pull the loop 

(4) back over the catch 

(6). Detach the second 

loop (4) in the same way, 

and take off the belt (7). 


making sure the belt (7) is 

correctly positioned. 

Note: 

On cleaners used by fire 

brigades, always fit the Ccoupling 

(2) first as a positioning 

aid. 

28/59 

Troubleshooting





3.9 Removing/fitting pump (Attix 751-61/-71, Attix 19 Gallon AE) 





frame.. 

2. Take out the C-coupling 

(see 3.8/3, page 27). 

E 

3. Disassemble the plug 

(1) of the pump (3), undo 

the cable fixture (4) on the 

container, pull the cable 

through, and take out the 

pump. 

Fit in the reverse order. 

3.10 Removing/fitting non-return pipe (Attix 751-61/-71, Attix 19 Gallon AE) 

2 

3 

1 

Attix7 3668 

☞ 

4 

1 

Attix7 3664 

1. Remove the pump (1) 

(see 3.9, page 28). 

2. Unscrew the non-return 

pipe (2) from the threaded 

fitting of the pump (1), and 

remove it. 


Note: 

The threaded fitting can 

be sealed with normal 

silicone. 

29/59 

Troubleshooting



4. Cleaner head 

4.1 Removing/fitting grip (Attix 751-61/-71,19 Gallon AE) 

The following repairs are identical as with other models. 

Attix 


751-01/-11/-21 

751-2M/-0H 

791-21/-2M/B1 

19 Gallon 

761-21XC 

761-2MXC 

763-21ED 

763-2MED 


4.2 Removing / 

fitting grip X 


fitting grip X 



791-21/-2M/B1 

19 Gallon-AE 

Attix 751-61/-71 


fitting hood X 

761-21XC 

761-2MXC 

763-21ED 

763-2MED 



fitting hood X 


1 1 

Attix7 3611 

Identical to 

Attix 


12 Gallon 

560-21 

12 Gal.RDFD 

Identical to 

Attix 


12 Gallon 

560-21 

12 Gal.RDFD 

E 

As explained in the Attix 

550/560 repair manual, 

section E, page 36. But 

first unscrew the clamping 

fixtures right and left (1). 

See section 

"Troubleshooting" 

in repair manual 

Attix 550/560 

page 36 

Attix 550/560 

page 37 

See section 



Attix 550/560 

page 36 

Attix 550/560 

page 37 

30/59 

Troubleshooting





4.6 Removing/fitting cooling air filter (Attix 791-2M/B1) 

4.7 Removing/fitting hood (Attix 791-2M/B1) 

2 

3 

4 

3 

3 

4 

4 

1 

4 

Attix7 3612 

3 

3 

Attix7 3616 

3 

Attix7 3625 

E 

1. Undo the screw (1) with 

an Allen key (5 mm), and 

take off the cover. 

2. Pull off the filter insert 

(2) forwards. 

3. Undo the four screws 

(3) with a Phillips 

screwdriver, and take off 

the filter case. 


1. Unscrew the cooling air 

filter (see 4.6). 

2. Unscrew the socket 

(see 7.4). 

3. Undo the two screws (3) 

with an Allen key (5 mm), 

and take off the grip. 

4. Undo the four screws 

(4) of the locking clamps 

with a Phillips screwdriver, 

and take off the hood. 


31/59 

Troubleshooting




Attix 

4.8 Removing / fitting 

locking clamps 

4.10 Removing/fitting locking clamps (Attix 791-2M/B1) 



All models 

except 

791-21/-2M/B1 791-21 

Identical to 

Attix 

X 


560-21 

12 Gallon/-RDFD 


locking clamps X 590-21 

1. Remove the hood (see 

4.7). 

2. Take off the clamping 

plate (see Attix 590-21EC 

repair manual, section E). 

E 

See section 



Attix 550/560 

page 45 

Attix 590-21 

page 18 

3. Pull the locking clamps 

upwards and off. 


32/59 

Troubleshooting



5. Suction turbine 


Attix 

5.4 Removing / fitting clamping plate (Attix 791-2M/B1). 




19 Gallon-AE 

751-61/-71 


fitting clamping 

plate X 



plate X 

761-21XC 

761-2MXC 

763-21ED 

763-2MED 

Identical to 

19 Gal./AS/PE2 791-21 Attix 



plate X 590-21 


4.7). 

2. Remove the clamping 

plate (see Attix 590-21EC 

repair manual, section E). 


761-21XC 

761-2MXC 

763-21ED 

763-2MED 

19 

Gal./AS/PE2 


19 Gallon AE 

761-21XC 

761-2MXC 

763-21ED 

763-2MED 

19 

Attix 

Gal./AS/PE2 


bracket for filter 

tightener X 


hose for level 

monotoring X 


E 

See section 



550-01 Attix 550/560 

12 Gal./-RDFD page 38 

560-21 Attix 550/560 

12 Gal./-RDFD page 39 

Identical to 

Attix 

560-21 

12 Gal./-RDFD 

560-21 

12 Gal./- RDFD 

Attix 590-21 

page 18 


See section 



Attix 550/560 

page 40 

Attix 550/560 

page 40 

33/59 

Troubleshooting





All models 

except 

those with 

EC-drive 


791-21/- 

2M/B1 

761-21XC 

761-2MXC 

763-21ED 

763-2MED 

19 Gal./AS/PE2 Identical to Attix 

Attix 


fitting motor 

560-21 

carbon brushes X 

12 Gallon/- RDFD 


560-21 

fitting motor 

5.9 Checking motor, 

removing / fitting 

motor 

X 


X 590-21EC 

6 Automatic filter 

560-21 

cleaning X 12 Gallon/- RDFD 

E 

See section 



Attix 550/560 

page 41 

Attix 550/560 

page 41 

Attix 590-21 

page 19-20 

Attix 550/560 

page 42-44 

34/59 

Troubleshooting




E 

7 Electrical Following repairs or servicing, 

perform a thorough 

electrical check. 

Caution! 

Make sure the power plug 

is pulled out while you are 

carrying out repairs. 


electrical components 


7.4 Removing/fitting 

socket 




19 Gallon/-AE 


791-21 

Attix 


fitting power 

cord 

X 


fitting power 

cord X 


☞ 

761-21XC 

761-2MXC 

763-21ED 

763-2MED 

19 Gal./AS/PE2 Identical to Attix 

2 

2 

1 

2 

2 

1. Use a screwdriver to 

take off the cover frame 

(1). 


12 Gallon/- RDF 

560-21 


Attix7 3623 

Caution! 

Work with the appropriate 

wiring diagram (see section 

H). It is helpful if you 

make a sketch to clearly 

show which cable (note 

the color) matches which 

terminal. 

2 

See section 



Attix 550/560 

page 45 

Attix 550/560 

page 45 

2 

Attix7 3624 

2. Undo the six screws (2) 

holding the cover with a 

Phillips screwdriver, and 

take off the cover. 

35/59 

Troubleshooting





7.5 Removing/fitting power cord (Attix 791-2M/B1) 

4 

3 

4 

Attix7 3620 

1. Remove the hood (see 4.7). 

E 

3. Disconnect the cable on 

the socket (3), undo the 

two screws (4) with a Phillips 

screwdriver, and take 

off the case. 


2. Remove the power cord (see Attix 590-21EC repair 

manual, section E, page 21). 

36/59 

Troubleshooting



7.6 Checking electronic flow metering EC in manual mode 

(Attix 791-2M/B1) 

L1 

Power line 

N 



Lamp 

EC electronics 30 3022 00 0000 764 764 

E 

LED red 

LED yellow LED green 

1. Make sure the unit is isolated from the power. 


3. Set the cleaner head on a clean container 

(w/o a filter bag) and withdraw the hose from the 

container fitting. 

4. Apply line voltage and set the switch to “I”. 

Visual check: 

Green LED on = EC electronics driven, air flow OK. 

Yellow LED on = EC electronics driven, air flow 

reduced. 

Red LED on = EC electronics driven, air flow too low. 


6. Withdraw the two cables for the EC electronics on 

the switch and connect the lamp 302000764. 


Check: 

Lamp “EC electronics” illuminates immediately. 

Red LED illuminates and warning sounds. 

“MAN” OK? 

Ja - “MAN” mode OK. 

No -replace electronic and 

recalibrate 

37/59 

Troubleshooting



7.7 Checking electronic flow metering EC in automatic mode 

(Attix 791-2M/B1) 

L1 

Power line 

N 



Terminal EC electronics E 



3. Set the cleaner head on a clean container 

(w/o a filter bag) and withdraw the hose from the 

container fitting. 

4. Insert the “tool” lamp in the socket (302000765) and 

rotate the bulb one turn out of the receptacle. 

5. Apply line voltage and set the switch to “Auto”. 

6. Visual check: 

Green LED flashes (standby). 

7. Check: 

Turn the bulb properly into the receptacle. The “tool” 

lamp illuminates immediately, and the motor starts. 

The red, yellow and green LEDs illuminate. 

The red and yellow LEDs extinguish after 3-5 s. 

Rotate the bulb one turn out of the receptacle. 

The motor stops (runs on) after 3-5 s. 

“Auto” Mode OK? 

Lamp 

Tool 

302000765 

Yes - “Auto” Mode OK. 

No - Replace electronic 

and recalibrate 

LED red LED yellow 

LED green 

38/59 

Troubleshooting




Attix 

7.8 Checking flow sensor 

detection (performance) of 

electronic flow metering 

7.10 Removing/fitting electronic flow metering EC (Attix 791-2M/B1) 




761-2MXC 

763-2MED1 

791-2M/B1 Identical to Attix 

X 550-2M/-0H 

7.9 Checking and calibration 

(adjustment) of flow 

sensor X 550-2M/-0H 

2 

2 

4 

3 

4 

2 

2 

Attix7 3633 


4.7). 

2. Disconnect the power 

cord, cables to EC electronics, 

flow sensor, buzzer, 

and potentiometer from 

the electronics. Disconnect 

L1 and N on the 

socket (2). 

2 

E 

See section 



Attix 550/560 

page 54 

Attix 550/560 

page 55-56 

2 

2 

Attix7 3630 

Withdraw the plug for the 

speed control from the EC 

electronics. 

3. Undo the retaining 

screw (3) on the rotary 

knob with a Phillips 


the rotary knob. 

4. Undo the two retaining 

screws (4) behind the rotary 

knob with a Phillips 


the electronics. 


39/59 

Troubleshooting



7.11 Checking electronic level control in manual mode 

(Attix 751-61/-71, 19 Gallon/AE) 


7 cm 

1 1cm 

Attix7 3641 


1H 

Lamp Motor 302000764 1L 

Power line 

N 

LE D green 

Motor on 

(D7) 

Speed potentiometer E 

1. Make sure the unit is isolated from the power supply. 

2. Remove the hood (see 4.4, page 31). 

3. Place the cleaner head on a table so that the hose 

hangs downwards. 

4. Remove the two motor cables from the board and 

the switch. 

5. Connect the test lamp 302000764. 

6. Apply line voltage and set the switch to “I” 

(Man) for full power. 

Visual check: 

Green LEDs (D2 and D7) illuminate. 

Red LED (D3) flashes (microprocessor working). 

Check soft start and speed control: 

The motor lamp slowly starts to illuminate (soft 

start). 

Set the switch to minimum speed. 

The brightness of the lamp reduces. 

Check level control: 

Mark the hose at 11 cm. 

Slowly immerse the hose in a container filled with 

water until the lamp extinguishes. This turn-off point 

should be at the marking 11 cm +1 cm (recalibrate 

the level control if necessary (see 7.) and repeat the 

procedure). 

Green LED (D2) illuminates, red LED (D3) flashes. 

Red LED (D5) illuminates. 

7. The system can be activated again after a reset. 

“Manual” OK? 

LED green 

Pump on 

(D6) 

Calibration 

button 

LED red 

(D3) 

Microprocessor 

working 

LE D yellow 

Level 

Pump on 

( D4) 

LED red 

Motor off 

(D5) 

B2 

Pressur e sensor Yes - “MAN” Mode OK. 

LE D green 

Operating voltage 

present 

(D2) 

No - Replace electronic and 

recalibrate level 

40/59 

Troubleshooting



7.12 Checking electronic level control in automatic mode 



H1 

Lamp 

Motor 

302000764 L1 

Power line 

N 

LED green Moto r on 

( D7) 


LED green 

Pump 

on 

(D6) 

E 

1. Make sure the unit is isolated from the power supply. 




4. Remove the two motor cables from the board and 

the switch. 

5. Connect the test lamp 302000764. 

6. Insert the test lamp 302000765 in the socket. 

7. Apply line voltage and set the switch to “Auto”. 

Visual check: 


Red LED (D3) flashes. 

Check soft start: 

The motor lamp slowly starts to illuminate (soft 

start). 

Continued on page 42 

Calibration button 

Lamp H2 

Pump 

302000765 

LED yellow 

Level 

Pump on 

( D4) 

LED red 

Motor off 

(D5) 

LED 

red 

Microprocessor working (D3) 

LED green 

Operating voltage present 

(D2) 

B2 

Pressur e sensor 41/59 

Troubleshooting





E 

Check level control: 

Mark the hose at 7 and 11 cm (see 7.11, page 40). 

Slowly immerse the hose in a container filled with 

water until the lamp illuminates. This turn-on point 

should be at the marking 7 cm +1 cm (recalibrate 

the level control if necessary (see 7.13, page 40) 

and repeat the procedure). 

Green LEDs (D7, D2 and D6) illuminate. 

Red LED (D3) flashes (microprocessor working). 

Yellow LED (D4) illuminates (level - pump on). 

Continue to immerse the hose in water until the 

check lamp (motor) extinguishes. This turn-off point 

should be at the marking 11 cm +1 cm. 



Yellow LED (D4) illuminates. 


8. Take the hose out of the water. 

Visual check: 

The check lamp (motor) illuminates after about 6 s. 




After another 20-25 s the check lamp (pump) and 

LEDs (D4 and D6) extinguish. 

9. Check pump mode: 

Set the switch to “Pump” and hold it there. 

The motor lamp extinguishes. 

The pump lamp illuminates. 





After about 60 s the check lamp (pump) and LEDs 

(D6 and D3) extinguish. 

Briefly set the switch to “Pump” (it should automatically 

return to “Auto”). 

The motor lamp and pump lamp illuminate. 




After about 30 s the lamp (pump) and LEDs (D4 and 

D6) extinguish. 

Yes - “Auto” Mode OK. 

“Automatic” OK? 

No - Replace electronic 

and recalibrate level 

42/59 

Troubleshooting





7.13 Calibrating electronic level control (Attix 751-61/-71, 19 Gallon/AE) 

7.14 Removing/fitting electronic level control 


2 

D4 

5D 

D2 

E 

Attix7 3646 

1. Make sure the unit is isolated from the power 

supply. 




4. Mark the hose at 7 cm (see 7.11, page 40). 

5. Place the jumper (53840) on X5 (1). 


Visual check: 

Green LED (D2) illuminates. 

Yellow LED (D4) and red LED (D5) flash. 

7. Immerse the hose up to the marking in water, and 

press the calibration button (2) with an insulated 

tip. During calibration the LEDs (D4 and D5) will 

illuminate (about 2-3 s). After calibration they 

extinguish. 

8. Remove the jumper from X5 (1), and check the level 

control after resetting with the switch. 


2. Withdraw the connections of the power line, motor 

and temperature sensor from the electronics. 

Disconnect L1 and N on the socket. Take the two 

hoses off the pressure sensor. 

3. Undo the retaining screw on the rotary knob with a 

Phillips screwdriver, and remove the rotary knob 

(see 7.10). 

4. Undo the two retaining screws behind the rotary 

knob with a Phillips screwdriver, and remove the 

electronics (see 7.10). 


1 

43/59 

Troubleshooting




Attix 


751-61/-71, 

19 Gallon AE 

751-61/-71, 

19 Gallon AE, 

751-2M/-0H, 

763-2MED 

791-2M/B1 

Identical to 

Attix 

7.15 Checking 

temperature sensor X Centix 


temperature sensor 

/ flow sensor X 

7.17 

7.18 

7.19 

550-2M/-0H 

Centix 


Identical to 

Attix 

19 Gallon 751-21 751-2M/-0H Attix 

Checking removing / 

fitting electronic soft 


start X 

12 Gallon 


fitting electronic EA. 


fitting electronic flow 

X 550-21 

metering X 550-0H/-2M 

761-21XC 

763-21ED 

19 Gal. 

Attix 

AS/PE2 

7.20 Checking removing / 

fitting electronic 

magnet control X 

7.21 Checking level 

monitoring 


761-21XC/-2MXC 

763-21ED/-2MED 

19 Gal. AS/PE2 

X 

Identical to 

Attix 

560-21 

12 Gallon 

RDFD 

560-21 

12 Gallon 

RDFD 

E 

See section 



Attix 350/360/Centix 

page 48 

Attix 350/360/Centix 

page 48 

See section 



Attix 550/560 

page 47-48 

Attix 550/560 

page 49-51 

Attix 550/560 

page 52-57 

See section 



Attix 550/560 

/Seite 60-63 

Attix 550/560 

/Seite 63-64 

44/59 

Troubleshooting




7.22 

Attix 


761-2MXC 

763-2MED 

751-2M 

761-2MXC 

763-2MED 

791-2M/B1 

Checking / 

removing 


sensor XC X 560-2MXC 

7.23 Electronic 

potentiometer 

(hose diameter) X 

E 


761-2MXC 

See section 

763-2MED 


791-2M/B1 Identical to Attix in repair manual 

560-21 

12 Gallon RDFD 

7.24 Checking piezo 

buzzer X 560-2MXC 

Attix 791-21 

791-21 

791-2M/B1 

Identical to 

Attix 


electronic EA. EC-3 

7.26 Checking removing / 

X 590-21 

7.27 


fitting electronic EC-3 X 590-21 

Checking, removing / 

fitting RFI filter / 

varistor X 590-21 

Attix 550/560 

/Seite 66-68 

Attix 550/560 

/Seite 69-70 

Attix 550/560 

/Seite 71 

See section 



Attix 590-21 

/Seite 22-24 

Attix 590-21 

/Seite 25-26 

Attix 590-21 

/Seite 26-27 

45/59 

Troubleshooting




Spare parts 

☞ 

F 

Please use the current 

spare parts list. 

46/59 

Spare parts



1 Special-purpose 

tools 


5 

Tools 

1 

1. Calibration sensor (Alto no. 302000766) 

2. Electronic device to check EC turbine 

(Alto no. 62859) 

3. Digital multimeter 

4. Lamp holder E-27/40 W (Alto no. 302000764) 

5. Lamp holder E-27/40 W (Alto no. 302000765) 

6. Test device (Alto no. 40434) 

7. Adjustment mask (Alto no. 62480) 

6 

4 

3 

2 

7 

G 

Attix7 3677 

Attix7 3678 

47/59 

Tools



1 Wiring diagram of Attix 751-01 


X1 

M1 

Motor 

L1 

1a 

1 

+ 

M 

1~ 

~ 

= 

N 

3 3a 

Wiring 

X2 

+ 

Z1 

MC 

A1 

Motor 

H 

A1 Electroni c soft start 

M1 M otor turbine 

X1 Power line X2 Termina l strip 6-way Z1 Anti-static clip 48/59 

i g 

W rin



2 Wiring diagram of Attix 751-11, Attix 19 Gallon 

Z1 

X3 


W1 

W2 

X1 

M1 

Wiring 

Motor 

L1 

1a 

1 

+ 

M 

1~ 

~ 

= 

N 

3 3a 

+ 

MC 

A1 

Motor 

H 

A1 Electronic sof t start M1 Moto r turbine W1 Single-co re lead W2 Single-core lead 

X1 Po wer line X3 Stocket Z1 Anti-static clip 

49/59 

i g 

W rin



3 Wiring diagram of Attix 751-21 

A1 

Motor 

MC 


Air 

+ 

X1 

+ 

+ 

3 

3a 

~ 

N 

M1 

Wiring 

= 

1a 1 

L 

M 

1~ 

Q1 

Z1 

X3 

H 

A1 Electronic sof t start 

M1 Moto r turbine X1 Powe r line 

X3 Socket Z1 Anti-static clip 

50/59 

i g 

W rin



4 Wiring diagram of Attix 751-2M 

A2 Flow- 

Sensor 

A3 

Tube 

H1 


A1 

Motor 

+ 

+ 

X6 

X5 

1 

2 

3 

X4 

1 

2 

3 

X2 

Air 

X3 

X8 

1 

2 

3 

X1 

1 

MC 

X1 

+ 

+ 

3 

3a 

~ 

N 

M1 

= 

Wiring 

1a 1 

L 

M 

1~ 

Q1 

Z1 

X3 

H 

A1 Electronic flow metering 

A2 Flo w sensor A3 Potentiometer H1 Buzzer M1 Moto r turbine 

X1 Power line X3 Socket Z1 Anti-static clip 51/59 

i g 

W rin



5 Wiring diagram of Attix 751-0H 

A2 Flow- 

Sensor 

H1 


A1 

Motor 

+ 

X6 

X5 

1 

2 

3 

X4 

1 

2 

3 

X8 

1 

2 

3 

X1 

1 

MC 

X1 

M1 

+ 

Wiring 

3 

3a 

~ 

N 

= 

M 

1~ 

1a 1 

L 

Q1 

X2 Z1 

H 


A2 Flow sensor 

H1 Buzzer 

M1 Motor turbine 

X1 Power line 

X2 Terminal strip 6-way 

Z1 Anti-static clip 

52/59 

i g 

W rin



6 Wiring diagram of Attix 761-21XC, Attix 763-21ED 

A1 

Baffle pipe 

9mbar 

Motor 

P2 

X1 

Pressure 

Compensation 

Reservoir 


ge 

X2 

rt 

+ 

+ 

+ 

~ 

1a 1 

MC = 

X3 

ge 

Magnet B 

X3 

Air 

Y2 Y1 

X1 

3a 3 

X7 X9 

F1 

Magnet A 

M1 

Wiring 

N 

AS 

L 

M 

1~ 

X2 

W2 

W1 

Z1 

H 

A1 Ee l ctronc i magne t control M1 Moto r turbn i e 

W1 Sn i ge l -cor e lead W2 Snge i l -cor e lead X1 Powe r ln i e 

X2 Termina l stri p 6-way X3 Socket Y1/Y2 Solenoid Z1 Anti-static clip 53/59 

i g 

W rin



7 Wiring diagram of Attix 761-2MXC, Attix 763-2MED 

A2 Sensor 

Tube 

H1 

A3 

gn 

A1 


rt 

X10 

X4 

X5 

X6 

X9 

+ 

X3 

+ 

X1 

1 

2 

3 

1 

2 

3 

Air 

1 

2 

3 

1 

2 

3 

Baffle pipe 

Motor 

ge 

9mbar 

P2 

rt 

MC 

Pressure 

Compensation 

Reservoir 

ge 

Y2 

+ 

X1 

+ 

X11 

3a 3 

Y1 

X12 

1a 1 

Magnet B Magnet A 

M1 

~ 

Wiring 

N AS 

= 

R32 

L 

M 

1~ 

X2 

W2 

Z1 

W1 

X3 

H 


A2 Flow sensor 

A3 Potentiometer 

H1 Buzzer 

M1 Motor turbine 

W1 Single-core lead 

W2 Single-core lead 

X1 Power line X2 Terminal strip 

X3 Socket 

Y1/Y2 Solenoid 


54/59 

i g 

W rin



12 Wiring diagram of Attix 19 Gallon AS/PE 2 

Staurohr 

A1 

X1 

Motor 

Druckausgleich 

Behaelter 

9mbar 

P2 


ge 

MC 

X2 

rt 

B1 

ge 

Magnet B 

Q 

X3 

+ 

Air 

+ 

Y2 Y1 

X1 

+ 

~ 

X7 X9 

Wiring 

3a 3 

N 

= 

F1 

Magnet A 

M1 

1a 1 

L 

M 

1~ 

X2 

W2 

W1 

Z1 

X3 

H 

A1 Electroni c magnet control 

B1 Flow monitor M1 Motor turbine W1 Single-co re lead W2 Single-core lead 

X1 Power line 

X2 Termina l strip 6-way 

X3 Socket 

Y1/Y2 Solenoid Z1 Anti-s tatic clip 55/59 

i g 

W rin



8 Wiring diagram of Attix 791-21 

X5 


1 

A1 

MC 

Air N 

L 

+ 

+ 

X1 

+ 

Wiring 

3 

3a 

~ 

= 

C1 

A2 

M1 

1 

1a 1 

6 

X2 

X72 

1 

Q1 

M 

1 

6 

X2 

PE 

Z1 

X3 

H 

A1 Electronic so ft start EC 

A2 Electronic EC 

C1 R FI suppression capacitor M1 Moto r turb ine EC 

X1 Power line 

X2 Terminal strip 

X3 Socket 

Z1 Anti-stati c clip 

56/59 

i g 

W rin



9 Wiring diagram of Attix 791-2M/B1 

A2 Flow 

Sensor 

A3 

Tube 

H1 

A1 

+ 

+ 

X5 

1 

2 

X4 

1 

2 

X8 

1 


3 

3 

X2 

Air 

X3 

2 

3 

X7 

MC 

+ 

X1 

X1 

+ 

3 

3a 

~ 

N 

= 

Operating data 

1 

Wiring 

1a 1 

C1 

A4 

M1 

L 

3 

2 

X7 

X8 

M 

1 

X2 

PE 

Z1 

X3 

H 

A1 Electronic flow metering A2 Flo w sensor A3 Potentiometer A42 Electronic EC 

C 1 RFI suppression capacitor H1 Buzzer 

M1 Motor turbi ne EC 

X1 Power line X2 Terminal strip X3 Socket 


57/59 

i g 

W rin



10 Wiring diagram of Attix 751-61, Attix 19 Gallon AE 

Baffle pipe 

A1 

X1 

Motor 

Pressure 

compensation 

Reservoir 

ge 

P2 

Pressure 

Sensor 


rt 

MC 

+ 

X1 

+ 

3a 3 

~ 

N 

Wiring 

= 

M1 

L 

M 

1~ 

X2 

X3 

Z1 

M2 

Pumpe 

M 

H 

A1 Electroni c sof t start 

M1 Mot or turbine M2 Pump 

X1 Po wer line 

X2 Term inal strip 6-way X3 Socket Z1 Anti-static clip 

58/59 

i g 

W rin



11 Wiring diagram of Attix 751-71 

Baffle pipe 

A1 

X1 

Motor 

Pressure 

Compensation 

Reservoir 

ge 

P2 

Pressure 

Sensor 


rt 

MC 

+ 

X1 

S1 

+ 

3a 3 

Wiring 

~ 

N 

= 

M1 

L 

PRCD 

3-pole 

M 

1~ 

X2 

X3 

Z1 

M2 

Pumpe 

H 

M 

A1 Ee l ctronc i sof t start M1 Moto r turbine 

M2 Pump 

S1 PRCD 

X1 Powe r line X2 Termina l stri p 6-way X3 Socket Z1 Anti-stati c cip l 

59/59 

i g 

W rin

ATTIX 751-01/-11 - Nilfisk-ALTO

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