Product Manual
Exception
Brakes require more than audible and visual inspection. Check daily by operating the product with and
without a load, stopping at various positions to ensure safe operation.
Dimensions of Brake Disc for Chain Block:
Outer Dia. Inner Dia. Thickness Thickness for replacement
0.5t / 1t / 1.3t /3t 50 (mm) 22.5 (mm) 2.5 (mm) 2.2 (mm)
2t / 5t / 10t / 20t / 30t 60 (mm) 30.5 (mm) 2.5 (mm) 2.2 (mm)
TABLE 1 - INSPECTION CHART
In chart, F indicates Frequent Inspection, P indicates Periodic Inspection
Note: Following disassembly of the hoist during inspection, a load test is required by ANSI/ASME
B30.21 and should be done before the product is put back into operation.
EN pg.12
LOCATION CHECK FOR F P
Braking mechanism Slipping under load
•
Hard to release
•
Brake parts: Brake Discs Glazing
•
Oil contamination
•
Pawl: Ratchet Excessive wear
•
Pawl: Spring Corrosion: stretch
•
Hook Chemical damage
•
Operation
•
Deformation
•
Cracks (dye penetrant, magnetic
particle, or other suitable detection
method)
•
Hook retaining members Not tight or secure
(Pins, Bolts, Nuts)
Not tight, secure or damaged
•
Hook Latch Damaged; does not close
•
Suspension Members (Sheaves, Hand-wheels, Chain attachments,
Suspension bolts or pins)
Excessive wear
•
Cracks
• •
Gears Distortion
•
Broken or worn teeth
•
Cracks
•
Inadequate lubrication
•
Load Block: Suspension housing Distortion
• •
Crack
• •
Trolley: Supporting structure Possible inability to continue
supporting loads or damaged
•
Bolts, Nuts, Rivets Not tight or secure
•
WARNING Labels Removed or illegible
•
Hoist Lever Bent, cracked
•
Proper operation Unusual sounds
•
IMPORTANT
Any deciency found on this inspection chart should be corrected before the hoist is put back into service.