Adjusting Brake
•Properly attach rated load of hoist to load chain hook.
•Slowly raise load to 6” height above floor by slowly pulling pull chain handle or depressing pendent control.
•Release pull chain handle or pendent control.
•If load starts to lower, tighten brake adjustment by turning
•Do not over tighten brake. If brake it too tight, the lifting and lowering of load will be eratic, not smooth.
Setting Maximum Up and Down Speeds
•Never attempt to adjust speed regulator valves on spark resistant hoists. They are preset by ARO.
•Attach rated load of hoist to load chain hook.
•Turn speed regulator valves clockwise until they stop. This is lowest setting.
•Lift load by pulling pull chain or depressing pendent control completely. As load is being lifted, turn up speed regulator valve
•Lower load by pulling pull chain or depressing pendent control completely. As load is lowered, turn “DN” speed regulator valve
•The pull chain or pendent control is used as the variable control of lift and lowering speeds up to the maximum speed set by the speed regulator valves.
REGULATOR UP DN
VALVES
Chain Stop
•Do not operate hoist unless chain stop is properly attached to hoist load chain.
•Do not use chain stop to limit the distance the load is to be lifted. The function of the chain stop is to keep the lower hook components from striking the control arm should an
Installation instructions should be completed before attempting to operate the hoist.
Before Securing Load to Lift Chain
•Perform routine inspection and lubrication procedures.
Securing Load to Lift Chain
•DO NOT WRAP LOAD CHAIN AROUND LOAD. Approved slings or other approved devices should be used to provide adequate single point securing of load to
hoist load chain hook. Be sure safety latch on hook is closed.
•Be sure load chain is not twisted or kinked.
•Hoist should be centered over the load. Always secure load chain hook to center of load. Never lift a load from the side or end.
•Allow only a sufficient amount of slack in load chain to permit attaching hook to load.
Lifting and Lowering Load
1.Pull (pull chain models) or depress (pendent control models) controls slowly to eliminate abrupt, jerky operation.
2.Take up slack in chain slowly.
3.Speed of load lifting can be controlled by the pull chain or pendent control. Pulling the chain further or depressing the pendent further will result in a faster speed.
Load Chain Removal
-Drive out roll pin (106) and remove clevis from chain.
-If a chain basket is being used with hoist, remove chain stop from end of chain.
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-Pull down on one end of control arm (68) to release brake and pull chain from housing.
Load Chain Installation
-A new chain should never be used on a worn pocketwheel. Replace chain and pocketwheel as a pair.
-Place hoist in vise and clamp on upper hook mount.
-Remove housing cap (95), brake spring (94) and brake shoes (92).
-Turn brake wheel (93) by hand to rotate pocketwheel while carefully feeding chain thru chain guide and around pocketwheel (64).
-Pull sufficient chain thru housing to allow end link to be attached to anchor lug on housing.
CAUTION
Chain must be positioned around pocketwheel so weld on the standing links face outward from pocketwheel - see illustration.
-End link of chain must also be positioned properly to permit attaching to anchor lug on housing without twisting of chain.
WARNING
Do not attempt to feed chain over pocketwheel by air power as chain will be pulled thru housing at a very fast rate.
-Attach other end of chain to lower hook (or anchor bracket on
CHAIN WELD
POCKET WHEEL
CHAIN GUIDE
Form | 3 |
