Fault Phenomenon: Demag DC-Pro chain hoist during operation, the chain suddenly jams, motor stalls.

Troubleshooting Process:
– Checked chain condition: chain twisted and deformed.
– Checked sprocket: sprocket teeth severely worn.
– Checked chain guide: chain guide detached.
– Replaced deformed chain and worn sprocket, repaired chain guide.

Root Cause: The chain guide failed, causing the chain to become misaligned and jam into the sprocket.

Required Parts: Lifting chain, sprocket, chain guide.