Refrigeration Service Operations
98
5. Back off the castle nut, one full turn only.
6. Insert the cotter pin.
7. Oil the gasket and install the end cap.
8. The throttling valve will have to be
recalibrated on operating unit. (See the
Specifications Chapter for the setting.)
9. Adjust by adding or removing shims under the
spring.
Installation
1. Install the throttling valve using a new O-ring
soaked in compressor oil. Bolt the throttling
valve to the compressor.
2. Install the suction valve.
3. Pressurize the compressor and check for leaks.
If no leaks are found, evacuate the
compressor.
4. Open the refrigeration valves and place the
unit in operation.
Liquid Line Solenoid Valve
(LLS)
NOTE: Valves that have nylon seats must be
disassembled before soldering.
Removal
1. Pump down the low side and equalize pressure
to slightly positive.
2. Remove the evaporator access panels.
3. Remove the coil and disassemble the valve.
4. Unsolder the liquid lines from the valve, and
remove the valve from the unit.
Installation
1. Clean the tubes for soldering.
2. Remove the coil, disassemble the valve, and
place the valve in position.
3. Solder the inlet and outlet connections. After
the valve cools, assemble the valve and install
the coil.
4. Pressurize the refrigeration system and test for
leaks.
5. If no leaks are found, evacuate the system.
6. Install the evaporator access panels.
7. Open the refrigeration valves and run the unit.
Check the refrigerant charge and compressor
oil.
1.
Tighten castle nut to bottom, then back
off 1 turn only. Insert cotter pin
Figure 67: Throttling Valve Reassembly
CAUTION: Use a heat sink to prevent
damage.
CAUTION: Use a heat sink to prevent
damage.
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Страница 4: ...4 ...
Страница 25: ...Unit Description 25 Figure 3 Zone 1 Cool Zone 2 Cool and Zone 3 Cool Zone 3 Zone 2 Zone 1 AGA168 ...
Страница 27: ...Unit Description 27 Figure 4 Zone 1 Cool Zone 2 Cool and Zone 3 Heat Zone 3 Zone 2 Zone 1 AGA169 ...
Страница 30: ...Unit Description 30 Figure 9 Front View AJA920 ...
Страница 31: ...Unit Description 31 1 Access Panels 2 Defrost Damper Figure 10 Back View 1 2 ARA104 ...
Страница 114: ...Mechanical Diagnosis 114 ...
Страница 116: ...Electric Standby Diagnosis 116 ...
Страница 120: ...Remote Evaporator Specifications 120 ...
Страница 122: ...Remote Evaporator Maintenance Inspection Schedule 122 ...
Страница 128: ...Remote Evaporator Electrical Maintenance 128 ...
Страница 132: ...Remote Evaporator Refrigeration Service Operations 132 ...
Страница 134: ...Remote Evaporator Structural Maintenance 134 ...
Страница 136: ...Remote Evaporator System Diagnosis 136 ...
Страница 140: ...Index 140 ...
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