Tractel tirak L 500 P Série Manuel D'installation Et De Manutention Original page 40

Operation and Installation Manual
Fault
Cause
The suspended load continues to be lowered slowly when stopped.
Defective or dirty operating brake (spring-loaded brake) on the hoist.
Incorrect wire rope diameter / wire rope diameter too small.
The load cannot be lifted / pulled although the wire rope can be lowered / slackened.
The load has jammed on an obstacle.
Incorrect wire rope diameter / wire rope diameter too small.
Overload.
The wire rope has run out of the hoist completely after lowering or slack-
ening without a load.
Fault in the UP control circuit of the hoist.
Limit switch UP faulty or tripped.
Poor motor performance due to a defective starter capacitor (single phase
motor).
Defective centrifugal switch (start capacitor overloaded, single phase
motor).
Traction sheave worn.
The motor hums intensively or the rope drive creaks although UP and DOWN travel is possible.
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.
ATTENTION! Dirt in the rope drive.
Wire rope and rope drive might be damaged.
EN-26
Elimination
– Lower the suspended load down to the ground.
– Send the hoist to the manufacturer for repairs or hand over to a
specialist hoisting gear workshop.
– Replace incorrect wire ropes with specified wire ropes.
– Carefully move the load downwards and remove the obstacle.
– Check the wire rope, rigging and lifting equipment to confirm their
operating safety.
– Replace incorrect wire ropes with specified wire ropes.
– Check the load and reduce if necessary.
– Reeve the wire rope according to the block and tackle principle, see
Fig. 6.
– Feed the wire rope back in.
– Clarify the cause.
– Avoid repeating, e.g. by using a longer wire rope.
– Have the connections, wiring and cut-outs checked by an electrician
and repair if necessary.
– Move down until the limit switch is free.
– Check the limit switch and replace if necessary.
– Have the starter capacitor checked by an electrician and replace if
necessary.
– Measure the current on the auxiliary winding in the terminal box.
Repairs should only be carried out by TRACTEL Greifzug GmbH.
– Replace the hoist as soon as possible and have it checked / re-
paired by TRACTEL Greifzug GmbH or an authorized hoisting gear
workshop.
– 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.
– Replace the hoist as soon as possible and have the hoist checked /
repaired by TRACTEL Greifzug GmbH or an authorized hoisting
gear workshop.
G1035.2 - 11/2014