TK 61555-2-MM-EN
101
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 80. 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.
Heat Exchanger
Removal
1.
Pump down the low side and equalize the pressure to slightly positive.
2.
Remove the evaporator access panels.
3.
Remove the mounting bolts that hold the heat exchanger on the bulkhead.
4.
Unsolder the equalizer line from the suction line.
5.
Unsolder 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 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.
