26
7.
Troubleshooting
Problem:
Possible cause:
Solution:
The lift does not work
The main switch is not turned on
Turn the switch on
There is no power
Check power and restore if
necessary
The electrical wires are
disconnected
Replace
Fuses are blown
Replace
The lift does not raise
when the LIFT-button is
pressed
The motor direction of rotation is
not correct
Interchange the phases on the main
switch
The oil in the hydraulic unit is not
sufficient
Add some hydraulic oil
The lifting button is faulty
Check the lifting button for proper
operation. Replace, if needed
The suction pump filter is dirty
Check and clean if needed
The lift does not lower
when the LOWERING-
button is pressed
The motor does not operate
properly and does not release the
mechanical safeties
Check the motor
Circuit board is faulty
Replace circuit board
The lowering button is faulty
Check the button and connection
for proper operation. Replace, if
needed
The lift does not stop at
the safety height during
lowering
The safety height limit switch is not
adjusted correctly or it is faulty
Adjust or change the limit switch
The circuit board is faulty
Replace circuit board
The LOWERING-button is faulty
Check the LOWERING-button and
connection for proper operation.
Replace, if necessary
The lowering solenoid valve does
not discharge
Verify if it is powered and check the
magneto for damages (replace if
disconnected or burnt)
The lift isn’t raising
synchronous
Presence of air or dripping in the
hydraulic circuit
Bleed the hydraulic circuit
The cylinder gaskets can be
damaged
Check and replace if necessary
The lifting capacity is
not sufficient
The oil in the tank is not enough
Fill oil in the tank
The pump is faulty
Check the pump and replace if
necessary
The maximum pressure valve is not
adjusted correctly
Adjust correctly
The lift does not lift or
lower smoothly
Leakages or presences of air into
hydraulic circuit
Bleed the hydraulic system
The pump filter is dirty.
Check and clean if needed.
The pump suction is blown
Check the seal and replace if
needed
The motor does not
stop when reaching
maximum height
The maximum height limit switch
does not work
Check the limit switch and replace
if needed
