Lubrication - Load Chain, Hooks And Suspension - Harrington ER2 SERIES Owner's Manual

6.1.4 Gear Oil – The C/H Meter can be used in conjunction with the average load lifted by the hoist to estimate
when the gear oil should be changed. Refer to
Rating
Light
Medium
Heavy
6.1.5 Electromagnetic Brake – The C/H Meter can be used to determine when the Electromagnetic Brake
should be monitored or replaced. Refer to
• When 1 Million starts have been achieved, inspect brake gap referring to Table 6.5 criteria.
• When 2 Million starts have been achieved, replace brake assembly regardless of brake gap.
Condition of Electromagnetic Brake Gap
(Ref. Table 5-7 for Gap Wear Dimension)
Brake gap is less than 50% of the limit.
Brake gap reaches 50 to 100% of the limit.
Brake gap reaches the limit.
6.1.6 Hook and Yoke – The C/H Meter can be used to determine when the Top/Bottom Hook and Yoke
should be replaced. Refer to
Light - The hoist is mostly used with a light load.
Rated capacity rarely applied.
Medium – The hoist is mostly used with a medium load.
Rated capacity frequently applied.
Heavy – The hoist is mostly used with a heavy load.
Rated capacity frequently applied.
Ultra-Heavy – Rated capacity constantly applied.
6.1.7 V Ring – The C/H Meter can be used to determine when the V Ring should be lubricated. Several
grams of MOLITHERM No. 2 grease should be applied to the V Ring every 200 hours of operation.
6.1.8 You are encouraged to use the Count/Hour Meter in conjunction with your experience with the hoist's
application and usage to develop a history upon which to gage and fine tune your maintenance program
for the hoist.
6.2 Lubrication – Load Chain, Hooks and Suspension
6.2.1 Load Chain
For longer life, the load chain should be lubricated.
The load chain lubrication should be accomplished after cleaning the load chain with an acid free
cleaning solution.
Table 6-4 Criteria for Recommended Gear Oil Replacement
Loading During Normal Operation
Average % of Rated Capacity
0 to 33%
33 to 67%
67 to 100%
Table 6-5 Criteria for Electromagnetic Brake Replacement
Table
Table 6-6 Criteria for Top/Bottom Hook and Yoke Replacement
Rate of Loading
Table 6-4.
Table 6-5.
Check the Brake at every 200,000 starts.
Check the Brake at every 100,000 starts until the brake
gap reaches at the limit gap.
Replace whole Brake
6-6.
Number of Starts to replace Hook and Yoke
Every 2 million starts.
Every 1.5 million starts.
Every 1 million starts.
Every 1 million starts.
41
Change Gear Oil After:
(hours)
360
240
120
Action