Planeta PLX-II 0,75, Operation And Maintenance Manual

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In case if the chain needs replacement it is assumed that the chain sprocket is also
affected. This must also be checked for wear.
Hook test (pos. 45 and 50): Hooks can get bent or extended due to heavy loading and
wrong handling of the equipment. The following table indicates when the hook needs
replacement upon exceeding dimension “G“. If this is the case, then the overloading
has also damaged other parts and the hoist needs to be checked thoroughly for
deformations in all related components.
Because of the tolerances of the forged hooks, the actual dimension
“G“ has to be measured at the particular device by the operator and
to be registered in the following list before bringing it into service.
Capacity
Max. Measurement of
Min. chain link
diameter (D)
1 chain
link (t)
11 chain
link (a)
0,75 t 18,9 mm 210,9 mm 5,4 mm
1,5 t 21,0 mm 231,0 mm 7,1 mm
3 t & 6 t 31,5 mm 325,5 mm 9,0 mm
Capacity
Clamp mouth opening „G“
max. x 1.1
normal maximal measured
0,75 t 26,5 mm 29,2 mm mm mm
1,5 t 33 mm 36,3 mm mm mm
3 t 40,5 mm 44,6 mm mm mm
6 t 47 mm 51,7 mm mm mm
Measurement must be carried out as follows
– Measure “G“ from metal to metal in the hook opening, not including the hook
security catch.
– The abrasion of the hook surface should not exceed 10 % of the actual value.
– Determine the lateral torsion of the hook! In case of torsion exceeding 10 degrees
beyond plane level, the hook must be replaced.
– Check the hook security catch for tight closure and smooth operation!
If negative, replace!
– Excessive damage due to chemical or corrosive influences require replacement of
the hooks. Do not repair a hook by welding or grinding!
– To check the hook for freedom from cracks, a fluorescent medium test is carried
out. Cracked hooks need to be replaced.
These tests are to be carried out specialists for hoisting equipment only. In case of
unavailability please contact your supplier. We perform such regular tests, also within
the framework of Maintenance Agreement.