Remedy - HADEF 46/21E Installation, Operating And Maintenance Instruction

Electric wire rope winch

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Table Of Contents

Table of Contents

Remedy

Problem*

Unit cannot be switched on

Hoist motor does not run

Hoist motor runs – load is not lifted

Hoist motor is running – chain does not lower

Motor hums and uses excessive current

Motor does not brake or has excessive afterrun-

ning.

Load drops slightly after the operation

Brake does not release

Fuses burnt out or motor contactor is triggered

Unit stops and honks

*) as far as applicable

Wrong wire rope guide direction.

Wirerope guiding device does not function.

Wirerope guiding device makes unusual noise.

5.52.262.00.01.13

Unit

Cause

No main power

Electric Hoists

Phase sequence not correct (with low voltage

control)

Fuse burnt out

Defective switching unit in the control button switch

Interruption in the control cable

Defect of capacitor (only for alternating current 1).

Electric Hoists

Overheat protection has tripped*

Defective coil - mechanic or electric overload

Pneumatic hoists

Operation pressure/ quantity of air is too low

and winches

After prolonged standstill

Overload protection is activated - (with overload)

Overload protection is activated - (with =< nominal

For motor driven

load)

chain hoists.

and winches

No or incorrect power transmission

For motor driven

Blockage due to chain link pointing sideways in the

chain hoists.

feed from the chain container*

Defective coil

Rotor is rubbing

Electric hoists and

Brake does not release

winches

Defect of capacitor (only for alternating current 1).

Defect of starter relay (only for alternating current 1).

Phase failure (only direct control)

Electric hoists and

Switching error after intervention in the electric circuit

winches

Brake linings are worn or dirty.

For motor driven

units.

Air gap is too large

Electrical equip-

Air gap of main brake too large; brake lining of main

ment with 2nd

brake worn or dirty

brake

Brake rectifier defective

Brake current relay defective

Brake coil is defective

Electric hoists and

winches

Permissibe air gap is exceeded due to worn out

brake lining

Power drop in the mains power line > 10%

Pneumatic hoists

Operation pressure/ quantity of air is too low

and winches

Short circuit in component

Motor has a short circuit in the body or windings

Electric hoists and

winches

Motor is switched incorrectly

Wrong type of fuse

Motorised units

Chain cannot run through the unit without error

with AK9 hoist unit

Operating limit switch is stuck / defective

Sliding block assembled in uncorrect groove

direction.

Sliding block is worn.

Missing of driving actuation due to worn of

defective chain wheels and/or roller chains.

Blocking and/or dirt of cross lead screw and/or

guiding rollers/rail.

Roller chain is tensioned incorrectly or is worn.

Remedy

Check connection to mains supply

exchange 2 phases

(see waring note at the plug)

Replace the fuse

Replace the switching unit

Check control cable and replace if necessary.

Replace the capacitor

Allow engine to cool

Motor must be repaired by a specialist

If the unit is suitable for explosive atmosphere, the motor

must be returned to the manufactuerer for repair!*

Check connection to mains supply

See maintenance - pneumatic motor

Reduce the load to nominal load

Check settings and reset if necessary

Let the unit be repaired by en expert

For EX-hoists, please clarify with the manufacturer what to

do!*

Check the chain - lubricate if necessary

and/or select a larger chain container so that the chain

can be properly arranged before the inlet

Motor must be repaired by a specialist

If the unit is suitable for explosive atmosphere, the motor

must be returned to the manufactuerer for repair!*

See problem "Brake does not release"

Replace the capacitor

Replace the starter relay

Find the cause and repair

Check the electric connection of the brake acc. to the

wiring diagram

Brake lining carrier must be changed completely