Compressor Replacement; Crankcase Heater; Disassembly And Assembly Of Exv Motor - Carrier AQUASNAP 30RAP010-150 Controls, Start-Up, Operation, Service, And Troubleshooting

NOTE: Open valve in Quick Test sub-mode before disassembling.
CLOSED
NOTES:
1. Push down on valve piston to close valve before assembling.
2. After valve is assembled close valve in Quick Test sub-mode or cycle power before opening service valve.
Compressor Replacement (Fig. 34-36) —
models contain scroll compressors and have from one to six
compressors. The size 010-030 units are a single refrigeration
circuit while sizes 035-150 are dual circuit. A compressor is
most easily removed from the front of the unit, depending on
where clearance space was allowed during unit installation.
Remove the junction box cover bolts and disconnect the
compressor power and ground connections. Remove the cable
from the compressor junction box. Remove the connections
from the high-pressure switch. Knock the same holes out of the
new compressor junction box and install the cable connectors
from the old compressor.
The compressors are bolted to rails, which are in turn bolted
to the unit basepan for all sizes except 010 and 015 which are
directly bolted to the basepan. Remove the 4 bolts holding the
compressor to the rail on the basepan. Save the mounting hard-
ware for use with the new compressor. Carefully cut the com-
pressor suction and discharge lines with a tubing cutter as close
to the compressor as feasible. Remove high-pressure switch
and pressure transducer(s) if required for compressor removal.
Lift one corner of the compressor at a time and remove all the
rubber mounting grommets (single compressor circuits) or
steel spacers (dual compressor circuits). Remove the old com-
pressor from the unit.
Slide the new compressor in place on the basepan. Lifting
one side of the compressor at a time, replace all of the compres-
sor mounting grommets. Using new tubing as required, recon-
nect compressor suction and discharge lines. Using hardware
saved, reinstall the mounting bolts and washers through the
compressor feet. Using proper techniques, braze suction and
discharge lines and check for leaks. Reconnect oil equalization
line on dual compressor circuit models.
Reconnect the compressor power connections and high-
pressure switch wiring as on the old compressor. Refer to
CLOSED
ADAPTER
OPEN
OPEN VALVE IN QUICK TEST SUB-MODE BEFORE DISASSEMBLING
OPEN
Fig. 33 — Disassembly and Assembly of EXV Motor (070-150)
DISASSEMBLY
ASSEMBLY
50Nm (36 ft-lb)+ 30°
EF05BD271 NV 32.5mm
EF05BD331 NV 36mm
Fig. 34-36. Following the installation of the new compressor,
All
tighten all hardware to the following specifications. (See
Table 25.)
Table 25 — Unit Torque Specification
FASTENER
Compressor Mounting
Bolts
Compressor Power
Connections
Compressor Ground
Terminal Connections
Crankcase Heater —
equipped with crankcase heaters. 30RAP070-090 units utilize
a 90-watt heater on each compressor. See Fig. 37. 30RAP100-
150 units utilize a 56-watt heater secured to the bottom of each
compressor (see Fig. 38). 30RAP010-060 units are not
equipped with crankcase heaters because the system refriger-
ant charge is less than the compressor manufacturer's require-
ment.
Crankcase heaters are required on all units installed with re-
mote coolers. Refer to remote cooler installation instructions
for more information.
52
27mm / 1 1 / ''
16
1
27mm / 1 / ''
16
GASKET
a30-4072ef
RECOMMENDED TORQUE
7 to 10 ft-lb (9.5 to 13.5 N-m)
24 to 28 in.-lb (2.7- to 3.2 N-m)
14 to 18 in.-lb (1.6 to 2.0 N-m)
30RAP070-150 units are