HADEF 20/94AFR Manual page 17

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Installation, operating and maintenance instructions (16 pages)

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 afterrunning.

Brake does not release

Fuses burnt out or motor contactor is triggered

*) as far as applicable

Decommissioning

WARNING!

It is essential that the following points are observed in order to prevent damage to the equipment or critical

injury when the device is being decommissioned:

It is mandatory that all steps for decommissioning the machine are carried out in the indicated sequence:

First secure the working area for decommissioning, leaving plenty of space.

Read the chapter "Safety instructions".

Disassembly is carried out in reverse order to the assembly.

Please make sure that all operating material is disposed of in accordance with environmental regulations.

5.52.692.01.01.04

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

Electric Hoists

Defect of capacitor (only for alternating current 1).

Defective coil - mechanic or electric overload

Pneumatic

Operation pressure/ quantity of air is too low

hoists and

After prolonged standstill

winches

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

Brake does not release

and 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

Switching error after intervention in the electric circuit

and winches

Brake linings are worn or dirty.

For motor driven

units.

Air gap is too large

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 and

Operation pressure/ quantity of air is too low

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

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

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

If the unit is suitable for explosive atmosphere, the brake