TK 61552-2-MM-EN
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(depending on manufacture date of the unit) fitting.
4.
Pressurize the low side and inspect for leaks. If no leaks are found, evacuate the low side.
(See the correct operation and diagnostic manual for more information. Place the unit in
operation.
5.
Back seat the receiver outlet valve, check the refrigerant charge and compressor oil level.
Expansion Valve Assembly
Removal
1.
Pump down the low side and equalize the pressure to slightly positive.
2.
Remove the evaporator access panels as needed.
3.
Remove the feeler bulb from the clamp. Note the position of the feeler bulb on the suction
line.
4.
Unsolder the equalizer line, inlet liquid line, and distributor from the expansion valve.
5.
Unsolder the inlet liquid line and the distributor 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.
Solder (95-5 Solder) the inlet liquid line and the distributor to the expansion valve.
3.
Solder the equalizer line, inlet liquid line, and 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 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.
Figure 85. Location of Expansion Valve Bulb
1.
End View
2.
Side View
5.
Replace Drier
6.
Pressurize the low side and test for leaks. If no leaks are found, evacuate the low side.
7.
Reinstall the access panels.
8.
Open the refrigeration valves and place the unit in operation.
9.
Test the unit to see that the expansion valve is properly installed.
10. Check refrigerant charge.
