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Maintenance
9.1 Inspection and maintenance
Cleaning the cooling air ducts
Regularly clean the cooling air ducts through which the ambient air flows.
The frequency of the cleaning intervals depends on the local degree of fouling.
NOTICE
Damage to the machine
Material damage can occur if you direct compressed air in the direction of the shaft outlet or
machine openings.
• Avoid pointing compressed air directly onto shaft sealing rings or labyrinth seals of the
Note
Please note the safety instructions for cleaning (Page 95).
9.1.9.6
Maintenance and repair for machines of protection type "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 performed in the terminal box
The operations must be identified by an additional repair plate carrying the following
information:
● Date
● Company carrying out repair
● Type of repair
● Reference number of the repair technician regarding repair work
116
machine.
Operating Instructions, 03/2018, A5E41926185A
1MB155 / 1MB555
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