An adequate electrical power supply of the correct
voltage must be provided. All control enclosure wiring
has been completed at the factory.
The electrical supply should be equipped with a fused
line disconnect switch or circuit breaker so that
electrical power may be disconnected while the unit is
being serviced.
The fuse line disconnect should be located and moun-
ted in accordance with all state, local, and national
regulations.
The unit must be properly grounded to provide adequa-
te ground fault protection. As a guide, it is suggested
that the ground wire be equal in size to one of the con-
ductors which feeds the compressor motor circuit. Make
certain the ground wire connections are clean and tight.
The wire used to feed the compressor circuit should be
selected and sized based on the following conditions:
1. Motor full load amperage plus service factor.
2. Ambient temperature in the area where the wire is
located.
3. Length of wire
4. Insulation type
This information may be found in the latest edition of
the National Electrical Code.
When installing a unit in a "Hazardous Location"; that is
in a location where fire or explosion is a definite hazard,
refer to the appropriate section of the National Electrical
Code for further information.
Caution
IN ALL CASES, THE LOCAL, STATE, AND NATIONAL
ELECTRICAL CODES MUST BE STRICTLY
FOLLOWED.
Danger
The power supply to the compressor side has to be
fitted for industrial equipment and fulfilling the
requirements of NFPA 79. To avoid strong damages
and fire on the power electric components, any
kind of operation outside of the stated limits of
NFPA 79 is inadmissible.
To establish an electrical connection, proceed as
follows:
Route the supply cable through the cable gland
(- 1 - Fig. 10) on the control cabinet and tighten screws.
Connect the supply line to the connecting terminals as
shown in the circuit diagram.
Fig. 10
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