5.5 Casing/insulation
DANGER
Explosive atmosphere forming due to insufficient venting
Explosion hazard!
▷ Make sure the space between the casing cover/discharge cover and the motor
flange is sufficiently vented.
▷ Do not cover the perforated holes of the contact guards at the drive lantern
(e.g. by insulation).
WARNING
The volute casing and casing/discharge cover take on the same temperature as the
fluid handled
Risk of burns!
▷ Insulate the volute casing.
▷ Fit protective equipment.
CAUTION
Heat build-up inside the drive lantern
Damage to the bearing!
▷ Never insulate the casing cover and the drive lantern.
5.6 Electrical connection
DANGER
Incorrect electrical installation
Explosion hazard!
▷ For electrical installation, also observe the requirements of IEC 60079-14.
▷ Always use a motor protection switch for explosion-proof motors.
DANGER
Electrical connection work by unqualified personnel
Danger of death from electric shock!
▷ Always have the electrical connections installed by a trained and qualified
electrician.
▷ Observe regulations IEC 60364 and, for explosion-proof models, EN 60079.
WARNING
Incorrect connection to the mains
Damage to the mains network, short circuit!
▷ Observe the technical specifications of the local energy supply companies.
1. Check the available mains voltage against the data on the motor name plate.
2. Select an appropriate start-up method.
NOTE
A motor protection device is recommended.
5 Installation at Site
26 of 58
Normblock
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