Thermo King SLXi Spectrum, Maintenance Manual

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Refrigeration Service Operations 11-10
3. Tighten the accumulator tank mounting bolts.
4. Replace Drier
5. Pressurise the low side and test for refrigerant leaks. If no leaks are found, evacuate the low side.
6. Open the receiver tank outlet valve. Place the unit in operation. Check refrigerant charge and compressor oil level and add as
required.
Pilot Solenoid
Removal
1. Recover the refrigerant.
2. Disconnect the wires and remove the coil from the valve.
3. Unsolder the refrigeration lines.
4. Remove the mounting bolts and remove the valve.
Installation
1. Remove the coil from the valve.
2. Place the valve in the unit and install the mounting bolts.
3. Solder the refrigeration lines to the valve.
4. Install the coil and connect the wires.
5. Replace Drier
6. Pressurise the refrigeration system and test for leaks. If no leaks are found, evacuate the system.
7. Recharge the unit with the proper refrigerant and check the compressor oil level.
Modulation Valve (SL and SLE only)
Removal
1. Pump down the low side and equalise pressure to 0 psig, (0 bar g).
2. Remove the lower evaporator access panel.
3. Disconnect the wires and remove coil from modulation valve.
4. Unsolder two elbows that connect the modulation valve between the evaporator outlet and heat exchanger. Remove the valve.
CAUTION: Use a heat sink or wrap valve with wet rags to prevent damaging the valve.
Installation
1. Clean the tubes and elbows for soldering.
2. Remove the coil from the new valve. Correctly position the modulation valve and elbows between the evaporator outlet and
the heat exchanger inlet.
3. Solder the connections.
CAUTION: Use a heat sink or wrap valve with wet rags to prevent damaging the valve.
4. Allow the valve to cool. Install the coil on the modulation valve and connect the wires.
5. Replace Drier
6. Pressurise the low side and check for leaks. If no leaks are found, evacuate the low side.
7. Install the evaporator access panel.
8. Open the receiver tank outlet valve. Place the unit in operation.
9. Check refrigerant charge
Hot Gas Bypass Solenoid Valve
NOTE: SLX/SLXe/SLXi Spectrum: The Hot Gas Bypass Valve (HGBPV) is located in the Host Evaporator section, next to
the Hot Gas Solenoid (HGS)
Removal
1. Recover the refrigerant charge.
2. SLX/SLXe/SLXi Spectrum: Remove the lower evaporator access panel.
3. Disconnect the wires and remove coil from the valve.
4. Unsolder the lines and remove the valve.