Eaton PRS0100001, User Manual

Page: 11 / 43

Operating Instructions
11
1. Follow all NEC and local codes for electrical wiring.
Allow only authorized Eaton Compressor
service person or certified electrician to install
electrical components.
2. Put unit on dedicated circuit and make sure no
other electrical equipment is wired into it.
Failure to wire unit on independent circuit
can cause circuit overload and/or imbalance in motor
phasing. Install proper No Fuse Breaker (NFB)
according to kW output of compressor.
3. Ensure incoming service has adequate ampere
rating.
4. Ensure supply line has the same electrical
characteristics (voltage, cycles and phase) as the
machine.
5. Refer to amp load information on motor tag and
use correctly sized wiring.
Be sure to consider
distance between power supply and machine.
6. Install surge protection device between power supply
and compressor electrical cabinet.
7. Make sure to install properly sized breakers and
fuses.
8. The unit must be properly grounded. DO NOT
connect ground wire to air or cooling lines. Connect
ground wire to grounding lug in the compressor
electrical cabinet.
IMPROPERLY GROUNDED ELECTRICAL COMPONENTS ARE SHOCK
HAZARDS. MAKE SURE ALL THE COMPONENTS ARE PROPERLY
GROUNDED TO PREVENT DEATH OR SERIOUS INJURY.
Wiring for Variable Speed Drive or typical Wye-
Delta Start.
See page 1 for advantages of
VSD.
DANGER
After electrical installation is complete, check the direction of the motor rotation.
1. Lightly push START and STOP buttons on the instrument panel. View unit while facing the drive pulleys
(from the back). Check directional arrows on air end of pump
2. If motor shaft is not turning counterclockwise, disconnect power to terminal block then exchange any two
of the three power leads. Re-check rotation.
Motor Rotation