TK 56433-5-MM-EN
73
bulb from the suction tube.
7.
Unsolder the suction line at the evaporator coil
end.
8.
Unsolder the remaining outlet suction line and inlet
liquid line connections. 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.
3.
Solder the liquid inlet and the suction outlet line
connections on the curbside of the evaporator. Seal
the openings through the bulkhead with putty when
the refrigerant lines have cooled off.
4.
Solder the suction line connection to the
evaporator coil.
5.
Solder the equalizer line to the suction line and the
liquid outlet line to the expansion valve.
6.
Tighten the heat exchanger mounting hardware
securely.
7.
Pressurize the low side and test for leaks. If no
leaks are found, evacuate the low side.
8.
Clean the suction tube to a brightly 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 the operation will be
faulty. Wrap with insulating tape.
9.
Replace the evaporator access panels.
10. Open the refrigeration valves and place the unit in
operation.
11. Check refrigerant charge and compressor oil level
Evaporator Coil Assembly
Removal
1. Pump down the low side and equalize the pressure
to slightly positive.
2. Remove the evaporator access panels.
3. Remove the sensors.
4. Remove the heat exchanger mounting hardware.
5. Remove the feeler bulb from the suction line clamp.
Note the position of the feeler bulb on the suction
line.
6. Unsolder the distributor from the expansion valve.
7. Unsolder the hot gas line and the suction line from
the evaporator coil.
8. Remove the mounting bolts and remove the coil
from the evaporator housing.
Installation
1. Place the evaporator coil assembly in position and
install the mounting bolts.
2. Solder the hot gas line and suction line connections
to the evaporator coil.
3. Solder the distributor to the expansion valve
assembly.
4. Reinstall the heat exchanger mounting hardware.
5. Reinstall the sensors.
6. Pressurize the low side and test for leaks. If no leaks
are found, evacuate the low side.
7. Clean the suction line to a bright polished
condition. Install 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 its
operation will be faulty. Wrap with insulating tape.
8. Pressurize the low side and test for leaks. If no leaks
are found, evacuate the low side.
9. Reinstall the evaporator access panels.
10. Open the refrigeration valves and place the unit in
operation. Check the refrigerant charge and the
compressor oil. Add as required.
Accumulator
Removal
1.
Pump down the low side and equalize the pressure
to slightly positive.
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2.
Unsolder the inlet and outlet suction lines from the
accumulator.
3.
Unbolt and remove the accumulator from the unit.
Installation
1.
Place the accumulator in the unit and tighten the
mounting bolts and nuts.
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2.
Solder the inlet and outlet suction lines to the
accumulator.
3.
Pressurize the low side and test for refrigerant
