Carrier 38AU appendix Check Voltage Imbalance

38AU

CHECK VOLTAGE IMBALANCE

LINE-TO-LINE VOLTS:	AB	V	AC		V	BC	V
(AB + AC + BC)/3 = AVERAGE VOLTAGE =				V
MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =						V

VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) =

IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM! CALL LOCAL POWER COMPANY FOR ASSISTANCE.

CHECK INDOOR UNIT FAN SPEED AND RECORD.

CHECK OUTDOOR UNIT FAN SPEED AND RECORD.

AFTER AT LEAST 10 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS:

SUCTION PRESSURE	CIR 1:	CIR 2:
SUCTION LINE TEMP	CIR 1:	CIR 2:
LIQUID PRESSURE	CIR 1:	CIR 2:
LIQUID LINE TEMP	CIR 1:	CIR 2:
ENTERING OUTDOOR UNIT AIR TEMP
LEAVING OUTDOOR UNIT AIR TEMP
INDOOR UNIT ENTERING-AIR DB (dry bulb) TEMP
INDOOR UNIT ENTERING-AIR WB (wet bulb) TEMP
INDOOR UNIT LEAVING-AIR DB TEMP
INDOOR UNIT LEAVING-AIR WB TEMP
COMPRESSOR 1 AMPS (L1/L2/L3)		/	/
COMPRESSOR 2 AMPS (L1/L2/L3)		/	/

NOTES:

Copyright 2010 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231	Printed in U.S.A.	Edition Date: 11/10	Catalog No: 38AU---09SI
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.			Replaces: 38AU--- 07SI

56