7. MAINTENANCE
NEVER perform maintenance on the hoist while it is supporting a load. However, this does not apply when checking the
brake, friction clutch or limit switch in the periodic inspection.
Before performing maintenance, attach tags to the power source and the push button switch reading;
"DANGER" NEVER OPERATE EQUIPMENT BEING REPAIRED!
ALWAYS use the hoist manufacturer's genuine parts when repairing a hoist. Only allow qualified service personnel to
perform maintenance.
ALWAYS lock-out power source before conducting maintenance. However, this does not apply when checking push button
switch operation and power supply voltage.
After performing any maintenance on the hoist, ALWAYS test to its Capacity before returning into service.
ALWAYS make sure to prevent hands or other parts of your body from being caught in the moving parts.
7.1 Lubrication
7.1.1 Gear lubrication
Change the gear oil, referring to the rate of loading and the operating hours in the following table. At least,
however, change it every 5 years even though the operating hour doesn't reach the specified hour.
To change the gear oil, remove both the oil plug and the drain plug and drain the old gear oil completely
before refilling the new specified one.
Using oils other than the specified standard or similar grade oils may prevent the friction clutch from working properly and
may cause the hoist to drop the load.
Notice : Dispose old oil in accordance with local regulations.
− 34 −
Operating Hours
Rate of Loading
120 hrs 240 hrs 360 hrs
Light
Medium
Heavy
Very heavy
When normally working with an approximate 1/3 of the rated load
and rarely with the rated load.
When normally working with an approximate 1/3 to 2/3 of the
rated load and sometimes with the rated load.
When normally working with an approximate 2/3 of the rated load
and often with the rated load.
When normally working with the rated load or near the rated load.
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