Charging Procedure for Partially Charged Units on Loaded Containers R-23

Note R-23 refrigerant should be added to an operating unit on a loaded container only if the unit is unable to maintain a -55 C to -70 C (-62 F to -94 F) load temperature. The risk of overcharging the system with R-23 is too large.

  1. Connect a refrigerant hose to a R-23 refrigerant tank.

  2. Connect the refrigerant hose to the receiver tank service fitting. Be sure to purge the air from the hose.

  3. Set the R-23 refrigerant tank for gas charging. Open the refrigerant tank hand valve.

  4. Observe the bottom receiver tank sight glass. When refrigerant is visible in the bottom of the lower sight glass, close the hand valve on the refrigerant tank.

    Note Immediately stop adding refrigerant when refrigerant is visible in the bottom of the lower sight glass. Under normal operating conditions, R-23 refrigerant will rarely be visible in the lower sight glass on a fully charged system.

  5. Remove the refrigerant hose from the receiver tank

  6. Cap the receiver tank service port.

  7. Check and correct the refrigerant charge level after the cargo has been unloaded and the unit is OFF.

Parent topic: Charging System with Refrigerant