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Carrier 38AH044-084 User Manual

Page 51

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Required Compressor Modification for 38AH044-
084 Optional Single-Circuit Units, When Com-
pressor A1 is Out —

To maintain unit operation, com-

pressor no.1 must be operable. If it is not operable, the following
temporary modifications must be made to keep the unit
running:
1. Change the oil pressure switch connections from com-

pressor A1 to compressor A2.

2. Connect compressor A2 into the Time Guard

௡ circuit as

compressor A1 was originally.

3. Open compressor A1 circuit breaker.

NOTE: Make sure the crankcase heaters are energized when
compressors are off.

FAN CONTACTORS

COMPRESSOR
CIRCUIT
BREAKERS

FAN CIRCUIT
BREAKER

TERMINAL
BLOCKS

TIMERS

TIME-DELAY
RELAY

OIL PRESSURE
SWITCHES

FUSE
HOLDERS

COMPRESSOR
CONTACTORS

TERMINAL
BLOCKS

TRANSFORMERS

Fig. 48 — Unit Control Box

NOTE: Fan rotation is clockwise when viewed from top of unit.

Fig. 49 — Condenser Fan Adjustment

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