Maintenance
9
9.1 Safety instructions for maintenance
Observe the following when carrying out any work on the machine:
● Comply with the general safety instructions (Page 13)
● Comply with the applicable national and sector-specific regulations at the place of
installation
● When using the machine within the European Union, comply with the specifications laid
down in EN 50110‑1 regarding safe operation of electrical equipment.
Comply with standard GB 3836.16 when carrying out all service and maintenance work on the
machine.
9.2 Maintenance for machines with type of protection "Ex d/Ex db"
Maintenance and repair for machines, type of protection "Ex d/Ex db"
The machine marking based on IEC / EN 60079–0 was supplemented by the "X" symbol.
● Maintain the special conditions for repairs. The gap dimensions for the electric machine do
not comply with the standardized values in IEC / EN 60079–1. For repair work, obtain the
gap dimensions of the electrical machine from the manufacturer.
● Perform maintenance, repair and modification work on explosion-protected machines in
strict compliance with the corresponding national health and safety legislation, the safety
instructions and descriptions in the general maintenance instructions.
Work influencing explosion protection must be carried out by the manufacturer or by a specialist
workshop for electrical machinery authorized by the manufacturer. This includes the following
operations, for example:
● Repairs to the stator or rotor windings and to the terminals
● Repairs to the ventilation system
● Repairs to the bearings
● Dismantling machines with flameproof enclosures
● Connection work carried out in the terminal box
The operations must be identified by an additional repair plate carrying the following
information:
● Date
● Company carrying out repair
SIMOTICS HV C 1NB1402-2AA84-4CA0-Z
Operating Instructions 06/2018 85
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