Carrier Ecologic 30GX080-265 Controls, Start-Up, Operation, Service, And Troubleshooting page 57

9. Remove the four M14 bolts securing the discharge line
flange to the compressor. Two of the bolts also secure
the mounting bracket for the external oil filter. Support
the oil line to prevent damage to the line while the com-
pressor is being changed. For 30GX units, place tem-
porary protection over coils to prevent fin and tube damage.
10. Move lifting apparatus into place and attach to the 2 lift-
ing rings on the compressor. Apply minimal tension to
hold the compressor while the remaining bolts are
removed.
11. Remove the 3 ⁄ -in. holddown bolt securing the foot at
8
the discharge end of the compressor to the mounting bracket
on the cooler. A foot bracket will be mounted to the re-
placement compressor.
12. Remove the 4 lockwashers and nuts securing the com-
pressor to the suction flange of the cooler. The compres-
sor is held in place using four M14 x 2 studs through
the suction nozzle of the cooler. The studs have an E-12
external Torx drive head. If possible, remove studs; if
studs hit the cooler insulation, leave them in place —
they will not interfere with compressor removal or in-
stallation. Save all the hardware as it will be needed to
install the replacement compressor.
13. After checking to ensure all lines, wires, conduits, etc.
are free and out of the way, remove compressor from
cooler. Apply a light film of O-ring grease to new O-ring
and place back into groove in mounting flange of com-
pressor. If the new compressor is the A1 or A2 (30HX
units) compressor, remove the compressor junction box
and rotate it 180 degrees. Tighten screws to 6.8 to
9.5 N-m (5 to 7 ft-lb). The A1 and A2 compressors are
on the right side of the unit when facing the unit control
box.
14. Remove suction cover plate and bolts from new com-
pressor and set compressor on unit flange. Thread the
studs all the way back into the compressor. Install
the 4 lockwashers and nuts finger-tight. Tighten bolts
in a crossing pattern to a range of 81.4 to 135.6 N-m
(60 to 100 ft-lb). Do NOT overtighten as damage may
result to O-ring. Install and tighten hold down bolt in
mounting foot.
15. Remove motor cooling/economizer and discharge line
cover plates from new compressor.
16. Apply a light film of O-ring grease to motor cooling/
economizer and discharge line O-rings, place back into
grooves and install flange bolts. Tighten discharge line
bolts in a crossing pattern to a range of 81.4 to
135.6 N-m (60 to 100 ft-lb). Tighten motor cooling/
economizer bolts to a range of 81.4 to 108.5 N-m (60 to
80 ft-lb). Do NOT overtighten as damage may result to
O-rings.
17. Reconnect the oil filter to the shutoff valve and oil line
to the compressor. Install oil line straight into fitting un-
til ferrule seats against fitting. Thread packing nut onto
fitting and tighten finger tight. Use a backup wrench to
finish tightening the nut. Do not overtighten.
18. Reinstall the loader and oil solenoids, high-pressure switch,
and oil pressure transducer. Make sure the loader sole-
noids are installed on the correct number loader.
19. Reconnect conduits back into compressor junction box.
Reconnect all wiring that was removed in Steps 4, 5,
and 7. The replacement compressor comes with a re-
verse rotation switch. This switch must be wired in se-
ries with the high-pressure switch for compressor pro-
tection. Reconnect these wires as shown in Fig. 20.
OIL PRESSURE
TRANSDUCER
OIL
SOLENOID
LOADER
SOLENOID
NO. 2
LOADER
COVER
PLATE
Fig. 18 — Transducer Removal
ONE LUG AT OUTSIDE EDGE, RING AT
DISCHARGE CENTER
COMPRESSOR LIFTING MECHANISM
CENTER OF GRAVITY
OF COMPRESSOR
DISCHARGE END
178 mm
95 mm
(7.0 in.)
(3.75 in.)
LIFTING LUGS BOTH OUTSIDE EDGES
COMPRESSOR LIFTING MECHANISM
DISCHARGE END
MINIMUM
381 mm
(15 in.)
NOTE: Locate strap from center of gravity lifting ring and support mo-
tor casing to provide 3-point level rigging.
Fig. 19 — Compressor Lifting Diagrams
RED
HPS
PL1-5
LEGEND
HPS — High-Pressure Switch
PL — Plug
RRS — Reverse Rotation Switch
Fig. 20 — High-Pressure Switch Wiring
20. Leak check compressor and refrigerant lines with nitro-
gen. Repair any leaks found. Remove nitrogen from sys-
tem. Evacuate compressor and refrigerant lines. Refer
to the Refrigerant and Oil Charging sections on
pages 54 and 55 for recharging procedures.
21. Open all shutoff valves and leak check the circuit and
all fittings and joints. Repair any leaks found.
57
JUNCTION BOX
OIL BLEED PORT
INTERNAL OIL
FILTER ACCESS
(3/4 in.)
LOADER
SOLENOID
NO. 1
HIGH
PRESSURE
SWITCH
GEAR COVER END
508 mm
(20.0 in.)
CENTER OF GRAVITY
OF COMPRESSOR
GEAR COVER END
MINIMUM
381 mm
(15 in.)
RRS RED
PL1-6