Nilfisk-Advance ATTIX 33-21 PC / IC, ATTIX 33-2H PC / IC, ATTIX 33-2L PC / IC, ATTIX 33-2M PC / IC, ATTIX 44-2H PC / IC Service Manual

Blue line models:

ATTIX 33-01 IC
ATTIX 33-2L PC / IC - ATTIX 33-21 PC / IC
ATTIX 44-2L PC / IC - ATTIX 44-21 PC / IC
ATTIX 33-2M PC / IC - ATTIX 33-2H PC / IC
ATTIX 44-2M PC / IC - ATTIX 44-2H PC / IC

ENGLISH VER. 1

ATTIX 33/44 L + M + H
VHS 40/42 L + M + H

Service manual

Grey line models:
VHS 40 L30 PC / IC
VHS 40 L30 LC FM IC
VHS 40 L40 LC FM IC
VHS 42 L30 MC PC / IC
VHS 42 L30 HC PC / IC
VHS 42 L40 MC PC / IC
VHS 42 L40 HC PC / IC

ROBE

Reinigungsmaschinen

Moltkestraße 13 | 89281 Altenstadt-Illereichen
Tel.: 0 83 37 / 75 301 | Fax 0 83 37 / 75 303
[e-mail]

www.wap-nilfisk-alto-shop.de

Hotline: 08337 - 75301

2

2

Index

A. Safety issues 4

B. Technical data 5

C. Construction / function 9

D. Troubleshooting 13

E. Service / repair 15

F. Spare parts 28

G. Electrical diagrammes 32

H. Tools 38

3

3

A

Preface

In this manual you will find
the essentials you need to

know when repairing wet and
dry cleaners of the ATTIX and
VHS 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.

A fault in the equipment
can have a number of causes.
Chapter D 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
and VHS series may be nec­essary for repairs to the equip­ment.

It is not permitted to give the
repair manuals to third parties.

Use original Nilsk spare
parts only!

Safety instructions marked
with this symbol in this man-

ual 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.

Symbols used to mark
instructions



4

4

A

Safety issues

Observe national safety
directives and regulations
for the electrical engineer-

ing 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 installa-

tions.

Before starting the equip­ment, be sure to read the

accompanying user
manual, and keep it close
as reference.

The equipment should
only be used by persons
who have been instructed
in its use and are author-

ized to do so.

Repairs should only be
made by someone who has
received proper instrucons
for the job or who is a quali­ed electrician

WARNING:
The upper secon of the

machine contains live com­ponents. Contact with live
components leads to seri­ous or even fatal injuries.

Always disconnect the
mains plug before disassem­bly.

For your own safety.

ESD (electrostac discharge)

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).



5

5

B

Technical data

ATTIX 33/44Standard and L-class machines

6

6

B

Technical data

ATTIX 33/44 M & H-class machines

7

7

B

Technical data

VHS 40/42 Standard and L-class machines

8

8

B

Technical data

VHS 40/42 M & H-class machines

9

9

C

Construction

Control panel

PCBA

Filter cleaning
system

Full tank sensor

Hose diameter setting

Flow/filter alarm indicator

Socket for power tools

Motor speed control

Rotary on/off switch

Control panel

Hatchback

Motor

unit

Buzzer

alarm

Flow

sensor

Solenoid

actuator

10

10

C

Construction

30 ltr container 42 ltr container

Main filter element, PTFE

Floater - full tank sensor

for liquids

AntiStatic grounding clip

Container clamp

Air flow cover

11

11

C

Function

Push&Clean - semi-automatic filter cleaning system

2

1

By sealing the suction opening (1) a
high negative pressure is generated
inside the dirt tank.

By actuating the cleaning button (2) on
the suction head, an air flap is opened
on backside of filter.

The negative pressure inside the dirt
tank is reduced very quickly and a re­versed air pulse flows through the fil­ter .

The dirt adhered to the filter is blown
and shaken off, causing it to fall back
into the tank.

To optimise the cleaning effect, we
recommend that you actuate the
cleaning button briefly a number of
times.

12

12

C

Function

Even with extremely fine dust the automatic filter cleaning function allows you to work constantly
with the same suction performance without having to manually clean the filter.

A powerful reversed air pulse is activated every 15 second keeping the air flow on a high level. The
air pulse is created by a solenoid connected to a piston with double-valve. When the valve is
opened a pulse is created by difference in pressure between outside and inside of container (dirty
side of filter). The negative pressure is reduced very quickly and a reversed air pulse flows through
the filter. The dirt adhered to the filter is blown and shaken off, causing it to fall back into the tank.

InfiniClean - Automatic filter cleaning system

Double valve system

Solenoid actuator