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Maintenance, Troubleshooting Trucklift
D1 3602BA1-GB03 17
5.3 Troubleshooting Checklist
The following checklist will help your service technicians to locate faults in the event of
problems.
Problem Possible cause Remedy
When lifting, lift stops of its
own accord at an arbitrary
height.
The LED on the circuit
board lights up (see ill. on
next page).
Lowering from this position
is possible.
a) Excessive load on the lift.
b) The distance between the
pulse encoder and the drive
pulley is too great.
a) Check whether the load
exceeds the rated maximum
lifting capacity. Check the
jackscrew lubrication and the
tension of the toothed drive
belt.
b) Check impulse encoder
distance (have it corrected, if
necessary).
Lifting should then be possible
again after lowering the lift by at
least 2 cm.
When lowering, the lift
stops of its own accord at
an arbitrary height.
The LED on the circuit
board lights up (see ill. on
next page).
Lifting from this position is
possible.
a) The lift has run into an
obstacle, lifting out the
jackscrew.
b) The distance between
the pulse encoder and the
drive pulley is too
great.
a) Remove the obstacle.
b) Check the upper pulse
encoder.
Lowering should then be
possible again after raising the
lift by at least 5 cm.
Lift stops in the upper
position. After pressing the
RESET button followed by
the "Lower" button, all
motors activate briefly and
then stop.(see ill. on next
page)
When the "Lift" button is
pressed the motors
activate again briefly and
then stop.
Pressing the buttons again
produces no further
reaction from the lift.
The red LED on the circuit
board lights up after about
5 seconds.(see ill. on next
page)
No signals from the upper pulse
encoders.
Check the upper pulse
encoders.