High Pressure Cutout Manifold

  1. Connect the manifold gauge to the compressor discharge service valve with a heavy duty, black jacketed thick wall #HCA 144 hose with 6024 kPa, 60.24 bar, 900 psig working pressure rating.

  2. Operate the unit in Cool by performing a Capacity 100 percent test from the Manual Function Test menu of the controller.

    High Pressure Cutout Manifold
    		      
      1 Relief Valve
      2 O-ring
      3 Adapter Tee (Weather Head)
         
         
         
         

  3. Raise the discharge pressure f the compressor by blocking the condenser coil airflow. Temporarily cover the compressor compartment, control box and power cord storage compartment with cardboard to reduce condenser coil airflow. This should increase the discharge pressure enough to cause the switch to open. When the switch opens, The compressor should stop immediately.

    Note The discharge pressure should never be allowed to exceed 3,447 kPa, 34.4 bar, 500 psig.

  4. Verify removal of the cardboard installed in step 3.

    Note If the HPCO switch fails to stop compressor operation, replace the switch and repeat steps 1 through 4.

Parent topic: Electrical Maintenance