AirSept's A/C Charge Guard Keeps PAG Oil Out of Electric Compressors Greenville NC
AirSept’s new A/C Charge Guard filter allows technicians to charge refrigerant into hybrid vehicles while eliminating the risk of lubricant contamination causing damage to electric compressors. Introducing even a small amount of PAG oil (the lubricant commonly used in belt-driven compressors) can damage the high voltage insulation in an electric compressor.
Pitt County Memorial Hospital
(252) 847-7886, 001-2004
(252) 847-7886, 001-2004
916 South Memorial Drive
PO Box 6028
Greenville, NC
PO Box 6028
Greenville, NC
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AirSept's A/C Charge Guard Keeps PAG Oil Out of Electric Compressors
February 02, 2010 AirSept's new A/C Charge Guard filter allows technicians to charge refrigerant into hybrid vehicles while eliminating the risk of lubricant contamination causing damage to electric compressors.  AirSept’s new A/C Charge Guard filter allows technicians to charge refrigerant into hybrid vehicles while eliminating the risk of lubricant contamination causing damage to electric compressors. Most electric compressors used in hybrid vehicle a/c systems require a special polyolester (POE) lubricant. Introducing even a small amount of PAG oil (the lubricant commonly used in belt-driven compressors) can damage the high voltage insulation in an electric compressor. This damage creates a ground isolation fault that leads to compressor failure and an engine no-crank condition. Vehicle and compressor manufacturers specify that no more than 1% of total lubricant in a hybrid a/c system can be PAG oil. This includes any PAG contained in leak detection dyes, and the PAG that remains in a/c service equipment hoses after use. SAE has proposed a new J2788H specification for charging hybrid a/c systems. It recommends that the amount of PAG or other non-POE lubricant be limited to no more than 1,000 ppm, to stay below the 1% limit set by compressor manufacturers. A single A/C Charge Guard unit allows no more than 240 ppm of liquid (including PAG) into the a/c system – less than one-fourth of the 1000 ppm limit proposed by SAE J2788H. ... |
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