What oil is used for 404A?
R-404A is a HFC and Polyol Ester is the only approved oil. The Alkyl Benzene will not be miscible with the HFC. The HCFC refrigerants have a small amount of chlorine that is miscible with the AB oil. Tests have proven that oil return problems result when AB is used with R-404A.
Is 404A compatible with mineral oil?
Mineral oil lubricants, such as 3GS, must not be used as the compressor lubricant with R-404A/R- 507. Polyol Ester (POE) lubricant, for a complete list of Copeland approved lubricants refer to Form 93-11, are the only lubricants that can be used in a Copeland compressor when using R-404A/R-507.
What is the replacement refrigerant for R404A?
For cold rooms and other small to medium commercial refrigeration applications, R448A and R449A and R452A or R134a are excellent alternatives to R404A, with from 50 to 65% reduction in GWP. R513A, newer alternative, is also very appropriate in medium back pressure (MBP) applications.
What refrigerant uses alkylbenzene oil?
Alkylbenzene (AB) – a synthetic oil suitable for refrigeration systems using CFC or HCFC refrigerants. It is compatible with mineral oil and compared to mineral oil, it has improved refrigerant miscibility with R-22 at low-temperature conditions.
Can I use R134a in a R404A system?
Thread: Accidentally mixed R404A with R134a Vacuum is not necessary because R404a consists of R134a. It will never work and your TEV or capillary is not designed for this refrigerant. If you want to destroy your compressor, let it run this way.
How do you charge refrigerant 404A?
R-404A and R-507 refrigerant cylinders have a dip tube and liquid is charged with the cylinder upright. Break the final vacuum by charging liquid refrigerant into the receiver outlet valve access or the area of liquid line downstream from the receiver outlet.
What is the difference between PAG and ester oil?
When people refer to PAG oil they typically refer to it in the following terms: PAG 46, PAG 100, or PAG 150. Ester oil is a synthetic lubricant. Ester molecules are very stable and have excellent performance characteristics in both high and low temperature environments.
What is pag 46 refrigerant oil?
Fully synthetic, polyalkylene glycol (PAG)-based oil which is used for the lubrication, sealing and cooling of refrigerant compressors or refrigerant circuits in passenger or commercial vehicle air conditioning systems.
What kind of refrigerant is R404A used for?
R404A Properties and Applications R404A is a zeotropic HFC refrigerant blend of R125, R143a and R134a. It is widely used in medium and low temperature refrigeration especially in the supermarket sector and for refrigerated transport. R404A was designed as a replacement for CFC R502 and closely matches its properties.
What kind of oil is used in R-134a air conditioner?
PAG oil, or Polyalkylene Glycol, is a fully synthetic hygroscopic oil specifically designed for automotive air conditioner compressors. It is used in R-134a air conditioning systems to lubricate the compressor.
Which is the correct name for polyalkylene glycol?
Polyalkylene glycol is the common name for the homopolymers of ethylene oxide, propylene oxide, or butylene oxide; or the copolymers of ethylene oxide, propylene oxide, and/or butylene oxide. Although polyalkylene glycol is the common usage, Chemical Abstractsrefers to these materials as polyoxyalkylene glycols.
Why are polyalkylene glycols used as lubricants?
Polyalkylene glycols are unique among synthetic lubricants because of their high oxygen content. As lubricants, they are exceptionally clean, allowing use where petroleum products would build tars and sludges. By varying their structure, one can vary their solubilities from water soluble to water insoluble.