Troubleshooting - Tractel tirak MWX 500-1537 Série Manuel D'installation

Installation and operating manual
17

Troubleshooting

DANGER!
Risk of being injured by falling objects!
The load lifting equipment may tip over if it jams!
– Stop the hoist immediately.
– Determine the cause and eliminate the fault.
Fault
Cause
The motor starts but the rope does not move.
Rope jam in the hoist due to damaged or incorrect rope.
Obstructed rope exit.
The load has jammed or is tied in place.
Rope jam on free reeler.
Hoist operation is not possible.
Control unit not switched on.
EMERGENCY OFF button pressed.
Stop button pressed.
Disconnected mains supply.
Power supply cable between the mains connection and the control unit
disconnected.
Power supply connected incorrectly or the neutral conductor is missing.
Protective cut-out tripped after overheating due to insufficient motor
cooling.
Protective cut-out tripped due to overheating caused by the voltage being
too high or too low.
Two poles in the power supply cable are switched. The built-in reverse
polarity protection locks out the control unit.
The brake does not open (no click when switching on / off) because the
power supply, brake coil, or rectifier are defective.
The brake does not open (no click when switching on / off) because the
brake rotor is worn.
EN-26
Elimination
– Support the load (e.g. with a wedge clamp or lever hoist).
– Cut the rope in front of and behind the hoist.
– Send the hoist to be repaired.
– When available, install a new rope in replacement hoist.
– Carefully free or untie the load.
– Check the rope, rigging and load lifting equipment for their operating
safety.
– Try to free the rope jam through the service opening.
– If this is not possible: cut the rope away from the free reeler.
– If necessary dismantle and replace the free reeler.
– Replace the rope.
– Switch on control unit.
– Unlock EMERGENCY OFF button.
– Unlock the Stop button.
– Clarify the cause and eliminate the fault.
– Check all cables and connections and repair as necessary.
– Have the connection repaired by an electrician.
– If necessary, have it modified by the manufacturer.
– Clean motor cover.
– Have an electrician measure the voltage and power consumption
when subjected to load.
– Increase the wire cross-section if necessary.
– Turn the phase reverser in the plug by 180°, see Fig. 24.
– Have the power supply, brake coil and rectifier checked by an
electrician and repair or replace.
– Send the hoist to the manufacturer for repairs or hand over to a
specialist hoist workshop.
G961.1 - 03/2012