80
160XT 180XT 210XT
21 FAULT FINDING
FAULT REMEDY
1. Electric motor does not start from the start button, although the selector switch
is in position 1, 2 or 3
The emergency stop button has jammed in
the lower position.
Pull up the button and re-start the motor
from the start button.
Fuse F1 has blown. Replace the fuse (10A).
No mains supply (230 VAC) to the selector
switch.
Check the extension cords, possible
distribution boards and fuses.
Fault current safety switch has tripped. Reset the fault current safety switch.
Voltage is supplied to the selector switch,
but is not transmitted further.
Check the operation of the selector switch
and replace it, if necessary.
Voltage is supplied to the selector switch,
and is also transmitted further.
Check the operation of the motor's control
contactor and thermo-relay as well as the
operation of the relays that control the
operation of the contactor.
Limit switch RK7 for the telescope chain has
disconnected the contactor circuit.
Check the operation of the RK7 and readjust
according to the instructions.
No direct-current supply (12VDC). Main switch turned off, turn on the switch.
2. None of the platform movements is operational, although the electric motor is
running and the selector switch is in position 2 or 3
Green signal light for outriggers is not
illuminated.
Check the operation of the outrigger limit
switches RK11, RK12, RK13 and RK14.
Green signal light for the outrigger limit
switches is illuminated, but the boom
movements do not operate.
Check the operation of the safety relay SR2
for the outrigger circuit.
Boom has been overloaded. Retract the telescope via buttons 6 or 21
until the platform returns inside its operating
range (the green light in the platform control
centre is illuminated).
Courtesy of Crane.Market
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