Thermo King Spectrum SB Series User Manual

Remote Evaporator Refrigeration Service Operations
130
Solenoid Valves
NOTE: Valves that have nylon seats must be
disassembled before soldering.
Removal
1. Pump down the low side and equalize the
pressure to slightly positive. For the hot gas
valve, recover the refrigerant charge.
2. Remove the access panels.
3. Remove the coil and disassemble the valve.
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, disassemble the valve, and
place the valve in position.
3. Solder the inlet and outlet connections. After
the valve cools, assemble the vale and install
the coil.
4. Pressurize the low side and test for leaks. If no
leaks are found, evacuate the low side. For the
hot gas valve, pressurize the refrigeration
system and test for leaks If no leaks are found,
evacuate the system.
5. Install the access panels.
6. Open the refrigeration valves and run the unit.
Check the refrigerant charge and compressor
oil. Add as required. For the hot gas valve,
recharge the unit with proper refrigerant.
Liquid Return Check Valve
Repair
Removal
1. Pump down the low side and equalize pressure
to slightly positive.
2. Remove the access panels.
3. Remove the cap nut from the check valve and
remove the spring and seat.
Installation
1. Inspect the inside of the check valve body for
damage or foreign particles that might adhere
to the seat and damage the new seat. If the
body is damaged, replace the check valve.
2. Install the new seat and spring. Place a new
gasket on the cap and tighten the cap nut.
3. Pressurize the low side and test for leaks.
4. If no leaks are found, evacuate the low side.
5. Install the access panels.
6. Open the refrigeration valves and run the unit.
Check the refrigerant charge and compressor
oil.
CAUTION: Use a heat sink to prevent
damaging the valve.
CAUTION: Use a heat sink to prevent
damaging the valve.
1. Cap
2. Gasket
3. Spring
4. Seat
5. Body
Figure 81: Check Valve with Cap Nut
AGA173
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Thermo King Spectrum SB Series Specifications

General

Brand	Thermo King
Model	Spectrum SB Series
Category	Refrigerator
Language	English