LIFTKET Hoffmann Electric Chain Hoist 071/51

Inspect hooks for deformation and cracks

Is the chain sprocket in the hook block worn by about 1 mm?

Measuring Wear and Replacing Load Hook

Measure length between chisel punch marks (dimension Y)

Record permissible values from hook certificate

Check condition of load hook components

Loosen the screws of the cap for gear cover.

Loosen the three fastening screws of brake unit.

Fit new brake unit onto the motor shaft.

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 link

Is a single chain link elongated by 5%?

Lubricate the entire length of 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.

Perform visual check of the entire equipment

Does the brake stop the load after approx. two chain braking link lengths during the lowering process?

Is the load stopped in a jerking manner?

Perform visual check for wear of the rubber elements

Safety Latch and Hook Inspection

Check condition of the following components