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AquaEdge® High-Efficiency Variable-Speed Screw Chiller Unit 23XRV | General Maintenance

This procedure is for the genreral maintenance of your High-Efficiency Semi-Hermetic Centrifugal Chiller. It has the instructions for adjusting the refrigerant charge, refrigerant leak testing and leak rate to name a few.
MaintainX
09/13/2022

AquaEdge® High-Efficiency Variable-Speed Screw Chiller Unit 23XRV | General Maintenance

This procedure is for the genreral maintenance of your High-Efficiency Semi-Hermetic Centrifugal Chiller. It has the instructions for adjusting the refrigerant charge, refrigerant leak testing and leak rate to name a few.

    WARNING: HFC-134a will dissolve oil and some non-metallic materials, dry the skin, and, in heavy concentrations, may displace enough oxygen to cause asphyxiation. In handling this refrigerant, protect the hands and eyes and avoid breathing fumes.

      Adding Refrigerant

      CAUTION: Always use the compressor pumpdown function in the Control Test mode to turn on the evaporator pump and lock out the compressor when transferring refrigerant. Liquid refrigerant may flash into a gas and cause possible freezeup when the chiller pressure is below 35 psig (241 kPa).

        Removing Refrigerant

        Adjusting the Refrigerant Charge

        Refrigerant Leak Testing

        Refrigerant Leak Rate

        Test After Service, Repair, or Major Leak

        REFRIGERANT TRACER

        TO PRESSURIZE WITH DRY NITROGEN: Another method of leak testing is to pressure with nitrogen only and use soap bubble solution or an ultrasonic leak detector to determine if leaks are present. This should only be done if all refrigerant has been evacuated from the vessel.

        Repair the Refrigerant Leak, Retest, and Apply Standing Vacuum Test

        Trim Refrigerant Charge

      Source: MaintainX (Community Member)

      Please note that any procedure, checklist, or other document available in the MaintainX Global Procedure Library is provided for general education and information only and does not constitute legal, medical, or financial advice. MaintainX makes the materials available AS IS and AS PROVIDED, without warranties of any kind. By downloading or using any such materials, you assume the risk that they may not be appropriate for your specific situation and agree that you are solely responsible for any such use, including compliance with applicable law and with meeting any conditions of product warranties.