90S Quattro (Canada) V6-2.8L (AAH) (1993)
Refrigerant: Technical Service Bulletins
Discharging, Evacuating and Recharging
WARNING
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Always use an Underwriter's Laboratory (UL) approved refrigerant recovery/recycling/recharging unit such as Kent-Moore ACR4, or equivalent,
whenever discharging an R-134a A/C system.
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Any person who services a motor vehicle air conditioner MUST, by law, be properly trained and certified and use approved refrigerant recycling
equipment. Technicians must complete an EPA approved recycling course to be certified.
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State and local governments may have additional requirements regarding air conditioning servicing. Always comply with state and local laws.
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Always wear safety goggles when discharging, evacuating or recharging an A/C system.
CAUTION
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Always use separate refrigerant recovery/recycling/recharging servicing equipment for R-12 and R-134a systems. DO NOT use one piece of
equipment for both R-12 and R-134a systems. The residual traces of refrigerant inside the equipment will contaminate and damage the equipment.
Servicing equipment includes recovery/recycling/recharging unit, charging station, vacuum pump, manifold gauges, etc.
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DO NOT use R-12 servicing equipment on R-134a systems or R-134a equipment on R-12 systems or damage to both the vehicle A/C system and
servicing equipment may result. Use only equipment designed to meet Society of Automotive Engineers (SAE) standards.
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R-134a and R-12 systems use different size service fittings. NEVER use adaptors to convert an R-12 fitting to R-134a size or R-134a fitting to R-12
size.
DISCHARGING
Note
Follow all safety measures when discharging an A/C refrigerant system
Note
Ensure initial set-up has been performed on the refrigerant recovery/recycling/recharging unit before discharging A/C system.
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connect red high pressure hose -A- of refrigerant recovery/recycling/recharging unit to high pressure service valve (fitting) on vehicle and open
coupler valve
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leave blue low pressure hose -B- of refrigerant recovery/recycling/recharging unit disconnected
Note
Only a high pressure service valve is used for A/C system servicing. A low pressure service valve is not installed in the A/C system. Perform all A/C
system service operations (i.e. discharging, evacuating and charging) through the high pressure service valve only
CAUTION