Operating Instructions – Explosion-Proof AC Motors – DRS/DRE/DRP 315
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Prerequisites for startup
Inspection/Maintenance
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Inspection/Maintenance
Only SEW service staff, repair workshops or plants that provide the necessary expertise
may repair or modify the motor.
Before re-startup of the motor, make sure that all regulations are complied with and doc-
ument this with a label on the motor or a written test report.
NOTE ON EXPLOSION PROTECTION
• Maintenance and repair work must always be performed by SEW-EURODRIVE or
repair workshops for electrical drives.
• Use only original spare parts from the relevant and valid spare parts lists;
otherwise, the explosion-poof approval for the motor will become void.
• The routine test must be repeated whenever motor parts relating to explosion
protection are replaced.
• Motors can become very hot during operation – danger of burns!
• Prior to any measures, disconnect the motor from and protect it against
unintentional re-start!
• Ensure that the motor is assembled correctly and all openings have been plugged
after service and maintenance work.
• Clean motors in explosion-proof areas regularly. Prevent dust from building up
higher than 5 mm.
• Never rework the surfaces of the ignition gap.
• Apply grease with a grease depot (Klüber Patemo GHY133N) to the lip of the oil
seal before assembly.
• Always perform safety and functional tests following all maintenance and repair
work (thermal protection, etc.).
• Explosion protection can only be ensured if motors are serviced and maintained
correctly.
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