Carrier 38AU - Page 56

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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
Manufacturer r es er ves the r ight to change, at any time, specifications and designs without notice and without obligations.
Catalog No: 38AU---09SI
Replaces: 38AU--- 07SI
38AU