LIFTKET Hoffmann Electric Chain Hoist 021/51

Adjustment of the Sliding Clutch

Is the adjustment being carried out by a trained or competent person?

Apply the test load (1.1 times the nominal/rated load) onto the load hook or clutch testing device.

Switch on the chain hoist and check if the test load can be lifted or if the clutch testing device shows approximately 1.3 times the nominal load.

Lower the test load to the floor.

Decrease or increase clutch torque until the test load is just lifted or the clutch testing device shows the required value.

Recheck the clutch torque by lifting the test load.

Record the adjusting value in the inspection book of the electric chain hoist.

Ensure continuous monitoring of the load chain according to DIN 685 section 5 and DGUV V54 (BGV D8), § 27.

Has the load chain been tested before starting operation?

Check the load chain links for the following issues

Measure the nominal thickness at the points of contact

Is the nominal thickness reduced by 10%?

Measure the elongation of a single chain or link

Is the chain or a link elongated by 5%?

Check if the brake stops the load after approx. two chain braking link lengths in a jerking manner.

Check all screws, hold down, chain guide, twisted chain, and safety devices

Check the condition of the electric cable, power cable, and pendant control

Check the condition of the trolleys and wheels

Lubricate the load chain with penetrating gear lubricant oil before starting operation for the first time.

Lubricate the load chain with penetrating gear lubricant oil during operation with no load.

Clean the links of the load chain before subsequent lubrication.

Select the type of dry-film lubricant to use when ambient influences are conducive to wear

Describe the frequency of use and operating conditions affecting lubrication needs.

Verify the function of the lift limiter

Inspect the wear of the load chain

Chain Bag and Positioning Check

Check the condition of the chain bag

Ensure safe positioning of the chain bag