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Refrigeration Service Operations (Rev. 04/02)
69
5.
Disconnect the inlet liquid line and unsolder the distrib-
utor from the expansion valve.
6.
Remove the expansion valve mounting bolt and remove
the expansion valve from the unit.
Installation
1.
Install and bolt the expansion valve assembly in the
unit.
2.
Connect the inlet liquid line and solder the distributor
to the expansion valve.
3.
Connect the equalizer line to the suction line.
4.
Clean the suction line to a bright polished condition.
Install the feeler bulb clamps and the feeler bulb on the
side of the suction line in its former position. The feeler
bulb must make good contact with the suction line or
operation will be faulty. Wrap with insulating tape.
5.
Pressurize the low side and test for leaks. If no leaks are
found, evacuate the low side.
1.
End View
2.
Side View
Location of Expansion Valve Bulb
AEA713
6.
Replace the access panels.
7.
Open the refrigeration valves and place the unit in oper-
ation.
8.
Test the unit to see that the expansion valve is properly
installed.
HEAT EXCHANGER
Removal
1.
Pump down the low side and equalize the pressure to
slightly positive.
2.
Remove the upper and lower evaporator access panels.
3.
Remove the mounting bolts that hold the heat
exchanger on the bulkhead.
4.
Disconnect the equalizer line from the suction line.
5.
Disconnect the liquid outlet line from the expansion
valve.
6.
Note the position of the feeler bulb on the side of the
suction line. Remove the expansion valve feeler bulb
from the suction tube.
7.
Unsolder the suction line at the evaporator coil end.
8.
Unsolder the remaining outlet suction line and inlet liq-
uid line connections from the condenser side of the
bulkhead. Remove any putty from around the lines
before unsoldering the connections.
9.
Slide the heat exchanger assembly out of the evaporator
housing.
Installation
1.
Clean the tubes for soldering.
2.
Place the heat exchanger assembly in the evaporator
housing and install the mounting hardware loosely.
Summary of Contents for SB-III 30 SR+
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Page 24: ...Unit Description Rev 04 02 14 Unit Photos Front View AGA231 ...
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Page 111: ...101 Early Model Coiled Wire Fuse Link Wiring Schematic ...
Page 112: ...102 Early Model Coiled Wire Fuse Link Wiring Diagram Page 1 of 4 ...
Page 113: ...103 Early Model Coiled Wire Fuse Link Wiring Diagram Page 2 of 4 ...
Page 114: ...104 Early Model Coiled Wire Fuse Link Wiring Diagram Page 3 of 4 ...
Page 115: ...105 Early Model Coiled Wire Fuse Link Wiring Diagram Page 4 of 4 ...
Page 116: ...106 Late Model Fuse Link in Battery Cable Wiring Schematic ...
Page 117: ...107 Late Model Fuse Link in Battery Cable Wiring Diagram Page 1 of 4 ...
Page 118: ...108 Late Model Fuse Link in Battery Cable Wiring Diagram Page 2 of 4 ...
Page 119: ...109 Late Model Fuse Link in Battery Cable Wiring Diagram Page 3 of 4 ...
Page 120: ...110 Late Model Fuse Link in Battery Cable Wiring Diagram Page 4 of 4 ...