A/C Refrigerant System, Evacuating and Recharging

WARNING!
- Always use an Underwriter's Laboratory (UL) approved refrigerant recovery/recycling/recharging unit such as Kent-Moore ACR4, or equivalent, when evacuating and recharging an R-134a A/C system.
- 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.
- State and local governments may have additional requirements regarding air conditioning servicing. Always comply with state and local laws.
- Always wear safety goggles when discharging, evacuating and recharging an A/C system.

CAUTION!
Always follow manufacturer's instructions when using a refrigerant/recovery/recycling/recharging unit

NOTE: Follow all safety measures when evacuating and recharging the A/C refrigerant system.


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


- Follow refrigerant recovery/recycling/recharging unit manufacturer's instructions for evacuating and recharging A/C system.
- Evacuate refrigerant system for a minimum of 30 minutes.
- When recharging A/C system, add correct amount of refrigerant and PAG oil to system.
- After system recharge, manually rotate A/C compressor approx. 10 turns before starting engine.
- Start engine with A/C OFF. After idle speed has stabilized, switch A/C ON and let engine idle (compressor running) for a minimum of two minutes before raising engine speed.