R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 10 - Manual (Page 25)

LM10 I&M MANUAL/EN/11.30.2010
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Copyright © (2010) R&M Materials Handling, Inc. All rights reserved.
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CAUTION:
SEE Figure 10.
Make sure the motor is not running before placing tool on the nut (ITEM 5) to adjust
it. Do not touch any moving components.
The slip-clutch generates heat when slipping. ITEMS 3 & 4 absorb this heat. When
these items become too hot, clutch adjustment may be difficult due to unstable
behavior of friction surfaces. If this happens, allow brake & clutch assembly to cool
before trying to re-adjust slip-clutch.
Decreasing torque too much when adjusting slip-clutch will allow a suspended load
to free-fall when trying to lift. If this occurs, release the motion button and the brake
will engage to stop and hold the load.
7.4.1 Slip Clutch Adjustment after Installation
1. Hook a load of at least 110 percent but not more than 125 percent of nameplate capacity.
2. Remove plastic cap from inspection hole in brake cover.
3. Raise load at slow speed and fast speed to test slip clutch operation.
4. Insert a socket (13mm) through inspection hole, and slide it over nut (ITEM 5 - Figure 10).
5. Turn nut in required direction:
Turn nut clockwise to increase the torque.
Turn nut counterclockwise to decrease the torque.
6. Repeat steps 3 and 4 until load can be barely lifted in fast speed. CAUTION: DO NOT OVERHEAT.
If overheated, clutch may not adjust due to instability of friction surfaces.
7. Once adjustment is completed, install plastic cap.
8. Check function of clutch at 100 percent of nameplate-capacity while in fast speed.
NOTICE:
The slip clutch / Torque Limiter is a safety device to prevent overloading of the hoist.
This device is not intended for use as means to measure the weight of load being
lifted.