Field Wiring
PFS unit compressors are single direction rotation compressors. For this reason proper
phasing of electrical power is essential. Electrical phasing must be A, B, C clockwise for
electrical phases 1, 2 and 3 (A=L1 ,B=L2,C=L3) The unit is supplied with single point factory
power connection and includes one MotorSaver phase failure, phase reversal protective
device that will prevent operation of the unit with incorrect power phasing. The MotorSaver is
factory wired and tested. Do not alter the wiring to the MotorSaver.
General Information
Wiring must comply with all applicable codes and ordinances. Warranty is void if wiring is not in
accordance with specifications.
Copper wire must be used for all wiring
The PFS is supplied standard with the main power wirin g for single point power connection. A single
large power terminal block is provided. Wiring within the unit is sized according to the National
Electrical Code. A single field-mounted disconnect (supplied by others) is required. An optional
factory mounted transformer for the 1
15
volt control circuit may have been provided.
Main power must enter the control panel at the location indicated on the unit illustration.
IM 663
21
