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11.3
Replacing the load chain
CAUTION!
If there is any visible damage and when the conditions for replacement are reached (i.e. one or several
dimensions in the table have been reached, there is corrosion or elongation), the chain must be replaced.
When replacing the chain, also check the chain wheels.
Procedure:
Only insert new chains in an unloaded state and as the chains that are currently in the device – i.e. not
twisted.
Remove chain from its fastening at the end and attach a chain link which is open at the side.
A chain link which is open at the side, can
easily be produced by grinding out a small
piece. The opening must have the same
thickness as the chain link.
Hang a new original chain (same size and oiled) in the side opened chain link and insert it.
Make sure the chain is not installed twisted.
Make sure the chain links are aligned in one direction.
Assemble the chain to the end fastening.
12
Inspection
12.1
Periodic checks
Independently from the regulations of the individual countries, lifting devices must be checked at least yearly
by a qualified person or licensed qualified person regarding its functional safety.
12.1.1
Components to be checked
The following must be checked:
Dimensions of load chain, load hooks, pawls, bolts, ratchet wheels, brake linings.
The dimensions must be compared to the dimensions in the tables.
A visual inspection for deformations, cracks and corrosion must be carried out.
CAUTION!
When the wear limit is reached, the part must be exchanged by a new, original part.
Check screw connections
Check lifting, lowering functions.
Check brake function
Check free-wheeling of chain
(only applicable for ratchet lever hoists with free-wheeling mechanism)
Brake - check the brake disc thickness
Check sprocket wheels, ratchet wheels, pawls, bolts
Clean and lubricate the load chain
Check the load chain for elongation and wear
Check the load hook for cracks and deformation
Load hook - check the safety latch
Check and lubricate the bearing of the chain pulleys
Check the chain pulleys
Check the rubber end stops
Check the trolley wheels for wear
Check lubrication of the trolley driving pinion
Have the equipment checked by a qualified person
(periodic inspection)
Clean off of dust (don't use compressed air)
Check of corrosion
Surface coated – wear control for
Load chain, hand chain, hook, housing
Check grease - bearings
Check grease – pinion of trolleys *
Name plates – exist, check readability
Protection earthing – check (pneumatich equipment) *
*if applicable
18
Illustration 9
on
daily
commissioning
checks
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1st maintenance
Inspection
after
Maintenance
3 months
Every 3 months
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5.52.127.01.01.02
Inspection Mainte-
nance
Every 12 months
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