Thermo King T-1080S, Maintenance Manual

Page: 155 / 191

Refrigeration Service Procedures
154
components: hot gas solenoid, liquid injection
solenoid, purge valve, or receiver tank
pressure check valve.
7. Check the temperatures of the refrigeration
lines on each side of the receiver tank pressure
check valve by hand. A temperature
difference between the two sides of the
receiver tank pressure check valve indicates it
is leaking.
8. Back seat the receiver tank outlet valve and
the suction service valve, and remove the
gauges to return the unit to normal operation.
Receiver Tank Replacement
Removal
1. Recover the refrigerant charge.
2. Unsolder the inlet tube from the receiver tank.
3. Unsolder the filter drier line from the receiver
tank outlet valve.
4. Unbolt the mounting brackets and remove the
receiver tank from the unit.
Installation
1. Place the receiver tank in the unit and install
the mounting bolts and nuts loosely. Position
the receiver tank so the sight glass is clearly
visible and the outlet tube lines up.
2. Solder the inlet tube from condenser check
valve tube to the receiver tank.
3. Solder the filter drier line to the receiver tank
outlet valve.
4. Tighten the receiver tank mounting hardware
securely.
5. Pressurize the system and test for leaks.
6. If no leaks are found, replace the liquid line
drier then evacuate the system.
7. Recharge the unit with refrigerant and check
the compressor oil.
Solenoid Valve Replacement
Removal
1. Recover the refrigerant charge.
2. Remove the coil from the valve.
3. Remove the valve mounting hardware if used.
4. Unsolder the refrigeration lines from the valve
and remove the valve from the unit.
Installation
1. Clean the tubes for soldering.
2. Remove the coil and place the valve in
position.
3. Install the valve mounting hardware if used.
4. Solder the inlet and outlet connections. After
the valve cools, install the coil.
5. Pressurize the refrigeration system and test for
leaks.
6. If no leaks are found, replace the liquid line
drier then evacuate the system.
7. Recharge the unit with proper refrigerant and
check the compressor oil.
CAUTION: Use a heat sink to prevent
damage.
CAUTION: Use a heat sink to prevent
damage.