
2
2
Nilfisk
ALTO
Index
A. Saftey Issues 4
B. Technical data 5
C. Disassembly 6-16
D. Function 17-19
E. Trouble shooting 20-27
F. Wiring Diagrams 28-30

3
3
Nilfisk
ALTO
A
Preface
In this manual you will find
the essentials you need
to know when repairing
wet and dry cleaners of
the Attix 30 and 50 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 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.
Repair manuals such as this
are a supplement to the spare
parts list. Please refer to the
spare parts list for any parts
that you do not find in this
manual.
Use original Nilfisk-ALTO
spare parts only!
Safety instructions marked
with this symbol must be
observed to prevent danger
and/or personal injury.
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
Nilfisk
ALTO
A
Safety Issues.
Unplug the machine from it’s power supply socket when not in use and before performing any
service or maintenance work on the machine.
Before starting any service or maintenance work, be sure to read this service manual fully and
keep it close by for reference.
Be sure to observe any national safety directives and regulations before attempting to repair or
service your machine.
The machine should only be used by persons who have been instructed in its use and are authorized to do so.
Repairs should only be
made by someone who
has received proper
instructions for the job
or who is a qualified
electrician.
For your own safety
ESD (Electro-Static Discharge)
Observe the following ESD precautions before repairing or working near electronic parts:
• Discharge any static build up on your own body by touching a properly earthgrounded source.
• Wear an anti-static wrist strap, if possible.
• Use a conducting floor or tabletop.
• Never touch a circuit board or electronic component directly, always hold them
by their plastic frame or insulation.
• Transport electronic parts in conductive packaging (e.g. special ESD packages).

6
6
Nilfisk
ALTO
C
Disassembly
1
2
3
Attix 30 A/SE Motorhead
Shown with both Push & Clean Feature
and Auto Start Electrical Outlet
1. Push & Clean button
2. Outlet socket
3. On / Off switch
Attix 50 Collection Container Attix 30 Collection Container
Attix 50 A/SE XC Motorhead
Shown with both Xtreme Clean Feature
and Auto Start Electrical Outlet
1. Xtreme Clean Filter

7
7
Fig. 1
Fig. 2
Remove the motor cover by removing the 3 screws (Torx 10)
shown in Fig. 1 on the top of the handle. Then remove the 3
screws (Torx 20) shown in Fig. 2 under the handle.
Nilfisk
ALTO
C
Disassembly

8
8
Dashboard
Air Guide
Circuit Board Suction motor
Nilfisk
ALTO
C
Disassembly
In order to access the motor once the motorcover
has been removed, carefully remove the dashboard,
circuit board (if present) and the air guide in order to
expose the remaining screws underneath.
Fig. 3 Attix 30 AS/E motorhead
Attix 30/50 Push&Clean Motorhead

9
9
Nilfisk
ALTO
C
Disassembly
Remove the 7 screws (Torx 20) shown in Fig. 4 and then
remove the clamping plate. Remove the 6 screws (Torx
20) shown in Fig. 5 and then remove the filter plate.
Fig. 4
Fig. 5
Attix 30/50 Push&Clean Motorhead