Thermo King RD-II SR 30 EEC - Receiver Tank and Three-Way Valve; Receiver Tank Service; Three-Way Valve Service

Refrigeration Service Operations (Rev. 04/03)
78
2. Disconnect the lines to the solenoid and immediately
cap to prevent moisture and air from entering the
system.
NOTE: The lines from the three-way valve to the pilot
solenoid will leak refrigerant at a high velocity and
should be capped.
3. Disconnect the electrical wires and remove the pilot
solenoid.
Installation
1. Replace the pilot solenoid in the unit.
2. Remove the caps from the lines and connect lines to the
pilot solenoid. Connect line from the three-way valve
first. Connect wires to the valve.
3. Open the refrigeration valves and place the unit in oper-
ation.
4. Check for leaks.
PRESSURE REGULATOR VALVE
Removal
1. Pump down the low side and equalize pressure to
slightly positive.
2. Release remaining pressure and unsolder pressure regu-
lator valve from the accumulator tank and suction tube.
Installation
1. Clean the tubes for soldering.
2. Place the valve in position and solder connections.
3. Pressurize the low side and check for leaks.
4. If no leaks are found, evacuate the low side.
5. Open the refrigeration valves, and place the unit in
operation. Check the refrigerant charge and add refrig-
erant as required.
RECEIVER TANK
Removal
1. Remove the refrigerant charge.
2. Unsolder the condenser check valve tube and bypass
check valve tube from the receiver tank.
3. Unsolder the filter drier line from the receiver tank out-
let tube.
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 mount-
ing bolts and nuts loosely. Position the receiver tank so
the sight glass is clearly visible and the outlet tube lines
up.
2. Solder the condenser check valve tube and bypass
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 refrigeration system and check for leaks.
If no leaks are found, evacuate the system.
6. Recharge the unit with refrigerant.
THREE-WAY VALVE CONDENSER
PRESSURE BYPASS CHECK VALVE
REPAIR
Removal
1. Remove the refrigerant charge.
2. Unscrew the condenser pressure bypass check valve
cap from the check valve.