Check voltage imbalance, Iii. start--up – Carrier 40RU User Manual
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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.
III. START--UP
CHECK INDOOR FAN MOTOR SPEED AND RECORD.
AFTER AT LEAST 10 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS:
COMP A1
COMP B1
OIL PRESSURE
SUCTION PRESSURE
SUCTION LINE TEMP
DISCHARGE PRESSURE
DISCHARGE LINE TEMP
ENTERING OUTDOOR UNIT AIR TEMP
LEAVING OUTDOOR UNIT AIR TEMP
INDOOR UNIT ENTERING AIR DB TEMP
INDOOR UNIT ENTERING AIR WB TEMP
INDOOR UNIT LEAVING AIR DB TEMP
INDOOR UNIT LEAVING AIR WB TEMP
OUTDOOR UNIT ENTERING WATER TEMP
(40RUS ONLY)
OUTDOOR UNIT LEAVING WATER TEMP
(40RUS ONLY)
INDOOR UNIT ENTERING WATER TEMP
(40RUS ONLY)
INTDOOR UNIT LEAVING WATER TEMP
(40RUS ONLY)
COMPRESSOR AMPS (L1/L2/L3)
____/____/____
____/____/____
CHECK THE COMPRESSOR OIL LEVEL SIGHT GLASSES, ARE THE SIGHT GLASSES SHOWING
OIL LEVEL AT
1
/
8
to
1
/
3
FULL? (Y/N)
NOTES:
Copyright 2010 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 08/10
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: 40RU---06SI
Replaces: 40RU--- 04SI
40RU