DEMAG Electric Chain Hoist Demag DC-COM 1

Remove both bolts (4) from the new hook.

Remove the upper half of the hook assembly.

Incorrect assembly may cause loads to be dropped.

– that chain link sections (1) are positioned with their collar in bearing (2). Grease the bearing and bearing seat.

– that retaining pin (3) is correctly fitted when the hook and fittings are assembled.

Unscrew and remove service cover (1)

Place bag (2) with the control cable on the top of the chain hoist

Disconnect spring (3) and place it in the recess in the chain collector box

Remove retaining spring (4) from pin (5) and remove the pin. While doing so, hold the chain collector

Place chain collector box (6) on the ground

Sign off on the chain collector box removal

Does the return sprocket turn easily?

Are the load bars removed from the bottom block?

Does the bottom block move easily during lifting and lowering operations?

Are there any abrupt movements of the bottom block?

When was the return sprocket last replaced?

Sign off on the monthly return sprocket check

Warning: Ensure the power is off before starting the procedure

Unclip the contactor retaining mechanism by pressing locking tab (A) with your thumb. This carefully bends locking tab (A) away from the contactor.

Turn contactor (B) using your other hand until the mechanism no longer holds it.

Unclip second locking tab (A) on the opposite side (as described in step 1 above).

Using your other hand, remove contactor (B) by pulling it away from the board.

Push the replacement contactor into contactor socket (C) until both locking tabs (A) click into position.

The contactors are also socket-mounted for sizes DC 1 to 5 manufactured as of 02/2011 and can be individually replaced.

Sign off on the contactor replacement

CAUTION: Premature wear of the chain. Danger of load being dropped due to broken chain.

The chain must be lubricated along its entire length.

Even chain links which are covered, e.g. in the chain anchorage, hook assembly, limit stop or crab frame, must be fully lubricated.

Gear grease, part no. 665 009 44, applied to chain link contact areas?

Chain link contact areas relubricated after cleaning?

Dry film lubricant used in environments where abrasives occur?

Non-standard lubrication details

Grease tube inserted at the lubrication point?

Grease inserted into the chain guide while running the chain to its end positions?