177
Remote Evaporator Refrigeration Service
Operations
NOTE: It is generally good practice to replace
the filter drier whenever the high side is opened
or when the low side is opened for an extended
period of time.
Expansion Valve Assembly
Removal
1. Pump down the low side and equalize the
pressure to slightly positive. Remove the
evaporator access panels.
2. Disconnect the liquid inlet line and distributor
from the expansion valve.
3. Remove the feeler bulb from the clamp. Note
the position of the feeler bulb on the suction
line.
4. Disconnect the equalizer line.
5. Remove the mounting U-bolt.
6. Remove the expansion valve assembly from
the unit.
Installation
1. Place the expansion valve in the unit and
install the mounting U-bolt.
2. Connect the equalizer line to the expansion
valve.
3. Connect the liquid inlet line and distributor to
the expansion valve.
4. Clean the suction line to a bright polished
condition. Install the feeler bulb clamps and
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 the
operation will be faulty. Wrap it with
insulating tape.
5. Pressurize the low side and test for leaks. If no
leaks are found, evacuate the low side.
6. Install the access panels.
7. Open the refrigeration valves and place the
unit in operation.
8. Test the unit to see that the expansion valve is
properly installed.
Evaporator Coil
Removal
1. Recover refrigerant by approved methods.
2. Remove evaporator assembly.
3. Remove the access panels.
4. Disconnect the distributor from the expansion
valve.
5. Remove the insulating tape and feeler bulb
from the suction line. Note the position of the
feeler bulb on the suction line. Disconnect the
equalizer line from the suction line.
6. Heat and unsolder the suction line connection
to the evaporator coil.
7. Remove the mounting bolts and slide the coil
from the housing.
Installation
1. Place the evaporator coil in the evaporator
housing and install the mounting bolts.
2. Clean and solder the suction line connections
to the evaporator coil.
3. Connect the distributor to the expansion valve.
4. Clean the suction line to a bright polished
condition. Install the feeler bulb clamps and
the feeler bulb on the suction line. Locate the
bulb on the side of the suction line in its
former position. The feeler bulb must make
good contact with the suction line or the
operation will be faulty. Wrap it with
insulating tape.
5. Connect the equalizer line to the suction line.
6. Pressurize the low side and test for leaks. If no
leaks are found, evacuate the low side.
7. Install the access panels.
8. Install evaporator assembly. Leak test,
evacuate and charge the unit.
Summary of Contents for SPECTRUM TS 30 SR NAD
Page 4: ...4 ...
Page 10: ...Table of Contents 10 ...
Page 20: ...Safety Precautions 20 ...
Page 51: ...Unit Description 51 Figure 19 Front View Figure 20 Back View AJA1350 AJA1500 ...
Page 52: ...Unit Description 52 1 On Off Switch Figure 21 Side View 1 ...
Page 60: ...Unit Description 60 ...
Page 80: ...SPECTRUM TS Operation 80 ...
Page 90: ...Electrical Maintenance 90 ...
Page 100: ...Engine Maintenance 100 Figure 130 Early TK 3 95 Fuel and Oil System Components ...
Page 102: ...Engine Maintenance 102 Figure 131 Late TK 3 95 Fuel and Oil System Components ...
Page 104: ...Engine Maintenance 104 Figure 132 TK376 Fuel and Oil System Components ...
Page 136: ...Refrigeration Maintenance 136 ...
Page 156: ...Hilliard Clutch Maintenance 156 ...
Page 158: ...Structural Maintenance 158 ...
Page 168: ...Remote Evaporator Specifications 168 ...
Page 170: ...Remote Evaporator Maintenance Inspection Schedule 170 ...
Page 176: ...Remote Evaporator Electrical Maintenance 176 ...
Page 180: ...Remote Evaporator Refrigeration Service Operations 180 ...
Page 182: ...Remote Evaporator Structural Maintenance 182 ...
Page 184: ...Remote Evaporator System Diagnosis 184 ...
Page 188: ...Wiring and Schematic Diagrams Index 188 ...
Page 189: ...189 Wiring Diagram Page 1 of 4 ...
Page 190: ...190 Wiring Diagram Page 2 of 4 ...
Page 191: ...191 Wiring Diagram Page 3 of 4 ...
Page 192: ...192 Wiring Diagram Page 4 of 4 ...
Page 193: ...193 Schematic Diagram Page 1 of 3 ...
Page 194: ...194 Schematic Diagram Page 2 of 3 ...
Page 195: ...195 Schematic Diagram Page 3 of 3 ...
Page 196: ...196 ...