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2
2R*
1R
1
1L
3
2L
4
B
D
C
E
A
*
PUMP OIL PRESS.
DUMP TO
CRANKCASE
OIL TO UNLOADER
POWER ELEMENTS
*STEP 2R DOES NOT EXIST ON
A 5F40 COMPRESSOR. NO HOLE
IS REQUIRED AT POINT A
FRONT VIEW
BOTTOM VIEW
HANDHOLE COVER (ALL PIPE PLUGS 1/8 NPT)
FROM UNLOADER
CONNECTIONS
WHEN UNLOADING DESIRED,
SOLENOID VALVE SHOULD ALLOW
OIL FROM UNLOADERS TO DUMP INTO
OIL SUMP.
A
B
C
THIS
PORT
CLOSED
TO UNLOADER CONNECTIONS. OIL
PRESSURE LOADS THIS STEP WHEN
SOLENOID VALVE ALLOWS FLOW AS
SHOWN.
THIS PORT
CLOSED
A
B
C
FROM HIGH
SIDE OF
OIL PUMP
Fig. 12 — 5F40 and 5F60 Compressors
Fig. 13 — Recommended Solenoid Valve Operation
A
DEENERGIZED, FLOW A-B LOADS STEP
B
ENERGIZED, FLOW B-C UNLOADS STEP