Maintenance/Repair; Safety Instructions For Maintenance/Repair - DEMAG DC-Com 1 Operating Instructions Manual

8

Maintenance/repair

8.1

Safety Instructions for maintenance/repair

In the following sections maintenance work is described which is necessary for optimum and trouble-free operation
of the device.
DANGER
Live components
Danger to life and limb.
Work on electrical equipment may only be carried out by qualified specialist personnel(⇒ "Definition of personnel",
Page 9 ) in compliance with the safety instructions.
Before starting work, the electrical supply must be switched off. The mains connection or isolator switch must be
secured against unauthorized or accidental reconnection by means of a padlock.
WARNING
Risk of burning
There is a risk of burning when touching the chain hoist after operation.
Do not touch the hot motor housing. Let motor cool down before starting maintenance and repair work.
WARNING
Inappropriate maintenance
Danger to life and limb. Danger of material damage.
Maintenance and repair work may only be carried out by qualified instructed personnel (⇒ "Definition of personnel",
Page 9 ) in compliance with the safety instructions.
– Secure working and danger zone.
– When using a working platform for maintenace and repair work, only systems designed for passenger trans‐
port should be used that provide for a stable position and work without any risk.
– Only suitable, tested and calibrated tools and accessories may be used for maintenance and repair work.
– Only use approved spare parts, see also ⇒ "Use of spare parts", Page 9.
– Wear protective clothing!
– Caution on open sharp-edged parts! Risk of injury!
– Ensure order and cleanliness at the workplace. Machine parts or fittings that are not required must be stored
so that they cannot fall down.
– Appropriately fit component parts. Tighten screws with the prescribed tightening torque. Inappropriately fixed
component parts may fall down and result in severe injuries.
– Welding work may only be carried out by persons having a special qualification. The requirements of DIN
regarding welding work must be complied with. The electrode holder and earth must be connected to the same
assembly when welding work is carried out. Otherwise serious damage may be caused to the hoist. Trolleys
must not be welded or drilled.
– Customer-specific regulations must be observed.
CAUTION
Loose connections
Loose connections mean danger for life and limb or risk of machine damage.
Metal nuts featuring a locking element (self-locking nuts) are mainly used for Demag chain hoists.
– Self-locking nuts must not be replaced by other types of nut.
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