Refrigeration Service Operations 11-11
Installation
1. Clean the tubes for soldering.
2. Remove the coil from the new valve. Correctly position the valve hot gas line.
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 valve and connect the wires.
5. Replace Drier
6. SLX/SLXe/SLXi Spectrum: Refit the lower evaporator access panel.
7. Pressurise the refrigeration system and check for leaks. If no leaks are found, evacuate the system.
8. Charge the unit with correct refrigerant. Place the unit in operation and check compressor oil level.
Throttling Valve (non-ETV Units)
Removal
1. Pump down the low side and equalise pressure to 0 psig, (0 bar g).
2. Front seat the discharge and suction service valves.
3. Remove the suction valve and pilot solenoid line.
4. Unbolt and remove the throttling valve from the unit.
NOTE: If the throttling valve joints are leaky and/or the rubber cap is detached or missing, the refrigerant may be
contaminated and should be recovered.
Disassembly/Repair
1. Remove the piston end cap (round end).
2. Remove cotter pin from the castle nut and remove nut.
3. Remove the spring and piston.
4. Loosen all the bolts on end cap.
WARNING: This end cap is under slight spring pressure.
Throttling Valve End Cap, Piston and Housing
1. Inspect end cap for wear
2. Inspect piston for wear
3. Inspect housing for damage
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