Electrical System; Electrical Connection - EBARA GMB GS Gebrauchs- Und Wartungsanleitung

The size of the coupling depends on the power of the motor connected to the pump. For
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further information contact EBARA.

6.6 ELECTRICAL SYSTEM

Check that the motor is cooled properly, by leaving the air inlets and outlets unobstruct-
ed. Our recommendation is to install the equipment in a ventilated place away from any
heat source.
The condensate drainage outlets must be located in the lower part of the motor. The
drainage caps can be removed provided that this does not jeopardize the protection of
the motor.

6.6.1 ELECTRICAL CONNECTION

All electrical connections of the equipment must be carried out by qualified personnel
with the power supply switched off.
- Use power supply cables that are adequately sized to carry the maximum current
absorbed by the motor, in addition to the margin set by local requirements; this will
avoid any overheating and/or voltage drops (voltage drops must be less than 3%
during the start-up phase).
- Make sure the cables reach the terminal box with a curve that prevents water from
getting in and running over them.
- The contact surfaces of the connections must be clean and protected against rust.
Do not place any washers or nuts between the terminals on the motor and those
providing access to the mains.
- Check the airtight sealing of the cable gland so as to ensure the degree of protection
indicated on the nameplate.
- Avoid any mechanical stress being transferred to the motor terminals.
- Comply with the current and frequency limits indicated on the nameplate of the mo-
tor.
- It is advisable to install a switch in order to prevent any accidents involving electrical
discharges, and also a protection against power surges for motors with the aim of
avoiding any damage due to overheating.
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Instruction and Maintenance Manual