106
Maintenance and Service
5.11
Electrical installation
5.11.1 Red control lamps
Refer to Section 3.2.2.
5.11.2 Error codes
Refer to Sections 3.5.1 and 3.2.2.
5.11.3 Fuses
The fuses are located in the electronic
system underneath the seat console.
Take hold of the seat console by the
handle and pivot it up.
Always disconnect the battery
plug before starting any work
on the electrical installations.
All the lifting elements, brush motors of
the scrubber drier (including side scrub-
bing brush) as well as all motors for the
side brushes and rotary brush of the
pre-sweep/vacuum unit option are
equipped with safety fuses and elec-
tronic fuse.
Safety fuses are installed in:
• the main fuse (200A high current
fuse (F50))
• the DC-DC converter (10A plug-in
fuse (A8))
When these fuses blow, the
vehicle is out of operation. This
is not indicated by an alarm
signal on the operating panel!
• the control unit (2A plug-in fuse (A1))
When these fuses blow, the
vehicle is out of operation. This
is not indicated by an alarm
signal on the operating panel!
• the suction turbines (35A high cur-
rent fuse)
• the water pump and relief valve for
the water supply (10A plug-in fuse)
• the hydraulic motor (160A current
limiter in the drive control)
• the extractor fan for the pre-
sweep/vacuum unit option (20A
plug-in fuse)
• the agitating motor for the pre-
sweep/vacuum unit option (20A
plug-in fuse) and
• the working lights and flashing bea-
con, automatic filling device, key
switch and horn (10A plug-in fuse
(F51))
When these fuses blow, the
vehicle is out of operation. This
is not indicated by an alarm
signal on the operating panel!
5.11.4 Drive control relay
The drive control is located in the left -
hand part of the driver's cab underneath
the foot plate.
Always disconnect the battery
plug before starting any work
on the electrical installations.
• Loosen the screws in the foot plate
and remove the foot plate.
• Relay K3 (main contactor) is mount-
ed upstream from the drive control.
• Replace a defect relay with a new
one.
• Replace the foot plate and fix by
means of the screws.