151
Eliminating Faults
Faults may occur even in the best maintained and serviced tail
lift.
The following description of possible faults will enable you to
recognize faults quickly and eliminate them saving time and
costs.
Principally, troubleshooting and the elimination of faults should
be done in the contractor repair shops. In the list of repair shops
you find the information how to find our contractor repair shops.
If necessary, you can request the list free of charge from our
sales offices or the factory.
For troubleshooting, preferably a test lamp can be used. Use
the ground connector on the PC board for troubleshooting.
Note:
If the tail lift can not be operated any more due to a defective
sensor, it can be switched to an emergency operating mode. In
the emergency operating mode the sensors are not called up.
Proceed as described below to switch to the emergency oper-
ating mode:
Press the pushbuttons “Open”, “Lower” and if there is, the
“Additional Key” for at least 10 seconds.
In the 7-Segment Display an “E” appears. Now each tail lift
movement has to be ordered manually. All the automatic
processes are deactivated.
Before troubleshooting, check the following:
Make sure that the tail lift is switched on in the driver's cab.
Check whether the battery main switch is switched on.
Make sure that the main fuse for the power supply is intact.
Check the two control-circuit fuses of the hydraulic unit or
power unit for correct function.
Check the control voltage fuse for 12 V systems at the ve-
hicle battery for correct function.
Make sure that the vehicle batteries function correctly and
are charged.
Verify that the ground cable on the hydraulic unit or power
unit establishes a good connection between the tail lift and
the vehicle.
Make sure that the oil reservoir is sufficiently filled (except
model E).
Check that mechanical or electrical components, for exam-
ple cables, are not damaged.
All Models
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