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9 FAULTS, CAUSES AND SOLUTIONS
FAULT
The lift does not work: no reaction.
When the <ascent> is operated, the lift
does not move up or has difficulty in
moving up.
Insufficient flow rate.
SECTION 9
GB
TROUBLESHOOTING AND PROBABLE SOLUTIONS
POSSIBLE CAUSE
1. No power.
2. Electric motor burnt out.
3. Pump out of order.
1.Not enough oil in control unit tank.
2. Pump very worn.
3. Ascent-descent solenoid valve jammed or out
of order.
1. Insufficient hydraulic circuit operating pressure
insufficient.
99
Minibenchi
SOLUTION
• Check the power distribution board and if
necessary set the master switch to the correct
position.
• Check the position of the mushroom-shaped
button on the control console; if necessary
release it and then press the reset button.
• Press the master switch placed on the power
board in order to turn off power and then
open the control panel on the control unit and
check the condition of the fuses. Replace the
fuses if necessary.
• Replace the electric motor.
• Replace the pump.
• Check the tank level and top up the oil if
necessary.
• Replace the pump.
• Check and replace the solenoid valve if
necessary.
• Check the pump operating pressure on the
pressure gauge.
Replace the pump if necessary.
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