Table 7-1 Troubleshooting Guide

 Improper braking may cause improper load lowering. The hoist utilizes dry friction discs; do not apply oil to friction surfaces.

Symptom

Cause

Remedy

 

 

 

 

Over tightened brake

Pull down hard (possibly with 2 people) on

 

The hoist left under load for a long period

 

the hand chain to loosen brake.

Load will not go down

Shock loaded during operation

 

 

 

 

 

Brake rusted tight

Replace the rusty components and perform

 

hoist maintenance.

 

 

 

 

 

 

A foreign object between friction surfaces.

Remove the object and clean the surfaces.

 

Replace if the friction surface is scarred.

 

 

 

 

 

 

Brake slip caused by significant rust

Replace the rusty component and perform

 

hoist maintenance.

 

 

 

Mis-assembly of friction plates, i.e. friction

Reassemble properly as shown and ensure

 

hoist functions properly before reuse.

 

plates missing or at one side as shown.

 

 

Load drifts or slips

 

 

when lowering

 

 

 

Cracked friction plate caused by overload

Replace the friction plate and use the hoist

 

properly within rated capacity.

 

 

 

 

 

 

Friction plate wear caused by very frequent

Perform hoist maintenance.

 

and long term use.

 

 

 

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