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Refrigerant Recovery

CAUTION: When discharging air conditioning system, use only approved refrigerant recovery/recycling equipment. Make every attempt to avoid discharging refrigerant into the atmosphere.
CAUTION: If variation is noted in service procedures, follow the manufacturer's instructions on refrigerant recovery/recycle system.
  1. Connect refrigerant recovery/recycle system hoses to high and low side service valves. See SERVICE VALVE LOCATIONS in this article.
    NOTE: Refrigerant recovery/recycle system hoses should contain shut-off valves or check valves to inimize amount of air that enters the recycle system when hoses are disconnected.
  2. Turn refrigerant recovery/recycle system on. Allow unit to run until vacuum is obtained. Once vacuum reading is obtained, close inlet valve on refrigerant recovery/recycle system (if equipped). Shut refrigerant recovery/recycle system off.
    NOTE: On some applications, the refrigerant recovery/recycle system will shut off because of a low pressure switch in the electrical system on the refrigerant recovery/recycle system. On other applications, the refrigerant recovery/recycle system must be shut off.
  3. Allow system to remain closed for approximately 2 hours while observing pressure readings on the refrigerant recovery/recycle system.
  4. If pressure reading remains at zero, disconnect hoses from service ports. If pressure reading increases to above zero, repeat steps 2) and 3).
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