Issue:
High subcooling on one circuit and low subcooling on the other circuit
Resolution:
RTAA, RTWA, RTUA, DX Evaporator:
Between the evaporator head and evaporator tubesheet a gasket is present. If this gasket were to get a tear or nick in it, it could allow a circuit to circuit leak to develop. To confirm, refrigerant needs to be removed from one of the two circuits and that circuit pulled into a deep vacuum if possible. If there are problems pulling into a deep vacuum, the circuit will need to be leak checked. If no evidence is found of a leak and the circuit is still unable to be pulled down, suspect a bad gasket on one of the evaporator heads and dropping the heads will be the next logical suggestion.
Notes:
Changes:
Other Question/Problem/Cause Statements:
- High subcooling on one circuit and low subcooling on the other circuit, why?
Facts:
- Air-Cooled Chiller (Pueblo) (RTAA 130-400 Ton)
- Air-Cooled Chiller (Pueblo) (RTAA 70-125 Ton)
- Compressor Chiller (Pueblo) (RTUA)
- Evaporator Chiller (EVP)
- Water-Cooled Chiller (Pueblo) (RTWA)
- No extra refrigerant has been added
- Clear sight glass
- No non-condensibles present in high subcooling circuit
Document Identifier: DOC-82149
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.