Adjustment Trolley LCA015S/LCA030D

Overload Device

Overload protection is integrated into the motor body and is standard on -E versions. The overload system is based on detection of the difference in air pressure between the inlet and outlet ports. It consists of a valve which is normally closed. The valve senses pressure at the motor inlet and outlet and compares the difference between the two pressures to the index value established by spring adjustment. A difference in pressure greater than the index value causes the emergency stop to be activated. This then exhausts the air and hoist operation stops.

Overload protection is adjusted at the factory to 120% of the safe working load (SWL). It is also able to operate on both sides for mining versions with two bottom hooks. Refer to the "MAINTENANCE" section for adjustment procedures.

Main Air Shut-off Valve

The main air shut-off valve is completely integrated into the motor body and is standard on -E versions.

Chain container

1.Check the chain container size to make sure the length of the load chain is within the capacity of the chain container. Replace with a larger chain container if required.

2.When a chain bucket is used, Install a chain buffer on the 15th link from the end of the chain.

3.Attach the chain container to the hoist.

4.Run bottom block to the lowest point and run hoist in the "UP" direction to feed the chain back into the container.

NOTICE

•Allow chain to pile naturally in the chain container. Piling the chain carelessly into the container by hand may lead to kinking or twisting that will jam the hoist.

Attaching Limit Stop

1.On hoists without a chain bucket, slide buffer and washer onto chain.

2.Install limit stop as described under "Chain Container".

3.Run hoist slowly in the "DOWN" direction to verify limit stop activates cutout.

Storing the Hoist

1.Always store the hoist in a no load condition.

2.Wipe off all dirt and water.

3.Oil the chain, hook pins and hook latch.

4.Place in a dry location.

5.Plug hoist air inlet port.

6.Before returning hoist to service, follow instructions for hoists not in regular service in the "INSPECTION" section.

Pre-adjust trolley for installation using Dwg. D5230233 and the

11. Screw inner nuts (66) out until they contact with side plates.

following instructions.

Thread outside nuts (66) onto screw or until tight against side

1. Fasten tightening nuts (74) to one end of suspension shaft (75),

plates. Check that side plates are perpendicular to beam.

using springwashers (73) , apply Loctite® 243 to capscrews

12. Upon completion of installation, ensure trolley beam stops are

threads.

installed and conduct initial operating checks as described in

Measure beam flange width and establish required position for

“OPERATION” section. Check that side plates are vertical and

spacers. Install required outside spacers on suspension shaft (75).

parallel to each other.

3. Thread a nut (66) onto each end of the screw rod (67), as far to

the center as possible.

Insert one end of this rod into the side plate and loosely fasten

with another nut (66).

Insert suspension shaft through side plate (36).

Install an equal number of spacers to each side of hoist

support (35), and sprokets wheels support (58), on suspension

shaft.

NOTICE

• The total clearance between the beam and the trolley wheel flanges is 4 to 8 mm when trolley is installed correctly. As shown in Dwg. D5230233, the difference between dimensions “X” and “Y” equals the total clearance.

7. Support the assembled portion of trolley on the beam.

8. Install second side plate (37).

9. Place the rest of spacers on the suspension shaft and secure loosely with nutsand springwashers.

10. Verify trolley wheel to beam total clearance. Adjust spacer locations until clearance specification is attained (refer to Dwg. D5230233). Apply Loctite® 243 to nuts and secure in place.

(Dwg.D5230233