Periodic Inspection
frequency of periodic inspection depends on severity of usage:
NORMAL | HEAVY | SEVERE |
yearly | semiannually | quarterly |
Disassembly may be required for HEAVY or SEVERE usage. Keep accumulative written records of periodic inspections to provide a basis for continuing evaluation. Inspect all the items in "Frequent Inspection." Also inspect the following:
1.FASTENERS. Check all rivets, split pins, capscrews and nuts. Replace if missing or tighten if loose.
2.ALL COMPONENTS. Inspect for wear, damage, distortion, deformations and cleanliness. If external evidence indicates the need, disassemble. Check gears, shafts, bearings, sheaves, chain guides, springs and covers. Replace worn or damaged parts. Clean, lubricate and reassemble.
3.HOOKS. Inspect hooks carefully for cracks using magnetic particle or other suitable
4.LOAD CHAIN SPROCKET. Check for damage or excessivewear. Replace if necessary. Observe the action of the load chain feeding through the hoist. Do not operate a hoist unless the load chain feeds through the hoist and hook block smoothly and without audible clicking or other evidence of binding or malfunctioning.
5.MOTOR. If performance is poor, disassemble the motor and check for wear or damage to bearings and shafts. The parts should be cleaned, lubricated and reassembled. Replace worn or damaged parts.
6.BRAKE. Raise a load equal to the rated capacity of the hoist a few inches (cms) off the floor. Verify hoist holds the load without drift. If drift occurs, disassemble. Remove the brake discs as described in the "MAINTENANCE" section. Check and clean the brake parts each time the hoist is disassembled. Replace the brake discs if the grooves are no longer visible.
7.SUPPORTING STRUCTURE. Check for distortion, wear and continued ability to support a load.
8.TROLLEY (if equipped). Check that the trolley wheels track the beam properly and trolley is correctly adjusted in accordance with manufacturer's literature. Check that wheels and beam are not excessively worn and inspect side plates for spreading due to bending. Do not operate the hoist until the problem has been determined and corrected.
9.LABELS AND TAGS. Check for presence and legibility. Replace if necessary.
10.LOAD CHAIN END ANCHORS. Ensure both ends of the load chain are securely attached. Secure if loose, repair if damaged, replace if missing. Check chain stoppers are correctly installed and functional.
11.LOAD CHAIN. Measure the chain for stretching. Measure the load chain over the outside of five link sections all along the the chain, paying particular attention to the most frequently reeved links. When any five links in the working length reaches or exceeds the discard length, replace the entire chain. Always use genuine
LC2A015S / LC2A030D :
Chain size 8x24 G8 (69089432)
Normal Length: 120 mm
Discard Length: 122 mm
LCA030S / LCA060D :
Chain size 13x36 G6 (69087432)
Normal Length: 180 mm
Discard Length: 183 mm
LCA035S / LCA070D :
Chain size 13x36 G8 (69054232)
Normal Length: 180 mm
Discard Length: 183 mm
LCA060S to LCA250Q :
Chain size 16 x 45 G8 (69087532)
Normal Length: 225 mm
Discard Length: 228 mm
12. CHAIN CONTAINER. Check for damage or excessive wear and that chain container is securely attached to the hoist. Secure or replace if necessary.
13 LIMIT SWITCH. Check limit switches function correctly.
Hoists Not in Regular Use
1.A hoist which has been idle for a period of one month or more, but less than one year, should be given an inspection conforming to the requirements of "Frequent Inspection" prior to being placed in service.
2.A hoist which has been idle for a period of more than one year should be given an inspection conforming to the requirements of "Periodic Inspection" prior to being placed in service.
3.Standby hoists should be inspected at least semiannually in accordance with the requirements of "Frequent Inspection." In abnormal operating conditions, hoists should be inspected at shorter intervals.
18
