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USER MANUAL
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Red Rooster Lifting Limited
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Nauta House, The Meadows, Oldmeldrum, Aberdeenshire, AB51 0EZ
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Tel: +44 (0) 1651 872101
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M01-AH27 REV2
SPEED & LOAD LIMITER ADJUSTMENT
7.2
SETTING THE LOAD LIMITER
Viewing the hoist from the motor end, the load limiter adjusting screw (M6 hex) is located on the left hand side on the valve cover. It is locked in
position with an M6 nut. Back off the lock nut before commencing adjustment.
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Set the regulator pressure to that which will be used during operation (normally 6 bar to 90 p.s.i).
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Turn the adjustment screw anti-clockwise until no resistance is felt and then turn clockwise until the internal spring starts to resist.
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Apply the safe working load in the hoisting mode slowly and then at full speed. The hoist will stop automatically.
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Rotate the screw one turn in a clockwise direction and again engage the hoisting mode.
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Continue, one rotation at a time until the load limiter fails to stop the hoist.
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Turn the screw 3/4 turn anti-clockwise and ensure the load limiter is operating at this point. (If not continue in an anti-clockwise
direction a fraction of a turn at a time until the load limiter operates.
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Turn the screw a further quarter of a turn anti-clockwise and tighten the lock nut.
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The load limiter is now set. A significant change in the operating pressure from that selected will necessitate adjustment of the load
limiter.
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The maximum travel of the adjustment screw is approximately eight turns, If adjusted to this point, the load limiter will not
operate.
CAUTION
CAUTION
2
3
4
5
1
Do not remove this cover!
4
Lock Nut
2
Hex Socket Head Cap Screw
5
Adjustment Screw
3
Cover
1
1
3
2
4
5
