Compressor Digital Control Valve Replacement

Parent topic: Refrigeration Maintenance

Removal

  1. Isolate the compressor and digital valve from the system.

    1. Front seat the discharge service valve by turning the valve fully clockwise.

    2. Front seat the suction service valve by turning the valve fully clockwise.

    3. Turn the digital service valve one quarter turn to the right.

  2. Turn the Unit On/Off switch Off.

  3. Disconnect electrical connections to valve coil.

  4. Unsolder the liquid line connections to the valve.

  5. Remove the valve from the unit.

Installation

  1. Clean the tubes for soldering.

      Notice
    • Equipment Damage
    • Use a heat sink or wrap switch with wet rags to prevent damage to new switch.

  2. Place the new valve in position and solder the liquid line connections.

  3. Perform a leak test (Refer to Leak Testing Refrigeration System). Repair leak if required.

  4. Check the refrigerant charge (Refer to Checking Refrigerant Charge).

  5. Reconnect the electrical wires to the valve.

  6. Perform a controller pretrip test to verify system operation.

      
  1 Discharge Service Valve
  2 Suction Service Valve
  3 Compressor
  4 Digital Service Valve
  5 Digital Control Valve