OPERATION & MAINTENANCE MANUAL RRC770 Refrigerant Management Center RTI Technologies, Inc. 4075 E. Market St. P.O. Box 3099 York, PA 17402 800-468-2321 (Extension 259) www.rtitech.
TABLE OF CONTENTS RRC770 Before Using . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . 3 Filling the Charge Cylinder . . . . . . . . . . . . . . . 5 Recover/Recycle . . . . . . . . . . . . . . . . . . . . . . . . 6 Oil Drain & Air Purge . . . . . . . . . . . . . . . . . . . . 8 Deep Vacuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Hose Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . 10 Charge/High Side . . .
RTI Technologies, Inc. BEFORE USING THE RRC770 Check for any shipping damage. Place a claim with carrier if damage is discovered. DO NOT USE A DAMAGED UNIT. Complete and return the Warranty Card to activate technical support service and warranty coverage: Warranty claims can not be honored without this warranty card on file. The RRC770 should not be operated or serviced by any person who has not read all the contents of this manual.
RTI Technologies, Inc. SAFETY PRECAUTIONS ! Recover, Recycle, and Charge only the refrigerant for which the machine is configured. ! Wear safety glasses and protective gloves. Refrigerant has a very low boiling point and can cause frostbite. ! Follow the RRC770 operating procedures sequentially to avoid prematurely disconnecting hoses or opening valves which may release refrigerant to the atmosphere. ! Do not expose the RRC770 to moisture or operate in wet areas.
RTI Technologies, Inc. L CAUTION 7 Avoid breathing refrigerant or lubricant vapor or mist. Exposure may irritate eyes, nose and throat. If accidental system discharge occurs, ventilate work area before continuing. Additional health and safety information may be obtained from refrigerant and lubricant manufacturers. Special Considerations with R134a R134a has been shown to be nonflammable at ambient temperature and atmospheric pressure.
RTI Technologies, Inc. FILLING THE CHARGE CYLINDER A/C Systems requiring service often do not have a full charge of refrigerant. The RRC770 should be filled until about 3 pounds of liquid refrigerant can be seen in the Charging Cylinder Sight Glass. The Sight Glass is visible through a slotted opening on the side of the RRC770. Figure 1 Filling the Charge Cylinder To fill the RRC770 Charge Cylinder, refer to Figure 1 and follow these steps: 1.
RTI Technologies, Inc. RECOVER/RECYCLE Figure 2 Recover/Recycle To Recover/Recycle, refer to Figure 2 and follow these steps: 1. Attach Red and Blue Hoses to the A/C system per the vehicle manufacturer's instructions. Note For R134a Machines Field Service Couplings on the ends of Service Hoses are of a special design. The valves have LEFT HAND threads which makes operation opposite to that of others. To Close... Turn Counter-clockwise To Open...
RTI Technologies, Inc. ! DO NOT TURN THE RRC770 OFF OR DISCONNECT HOSES ! A small quantity of Liquid refrigerant will probably still remain in the A/C System. This can be detected by observing an increasing pressure reading on the Low Side Gauge. As pressure rises to a preset level, the RRC770 will automatically cycle on to continue recovering refrigerant. Allow this automatic On/Off sequence to repeat until the vacuum level remains constant for at least 2 minutes. ... NOTE ...
RTI Technologies, Inc. OIL DRAIN & AIR PURGE Oil and Non-condensable Gas (Air) are separated from the recovered refrigerant and MUST be removed following EACH recycling procedure as follows: Note: RRC770 must be connected to power source. 1. Press and hold the Purge Air switch (below the Contamination Monitor Gauge) for 5 seconds, and then release it. 2. Slowly open the Oil Drain Valve (below cylinder shelf on rear left side of RRC770) to drain any oil which may have been removed from the A/C system.
RTI Technologies, Inc. DEEP VACUUM If the A/C System is "opened" for replacing components, a deep vacuum must be drawn on the system before recharging with refrigerant. This vacuuming process removes air and moisture introduced into the system. A Vacuum Pump mounted on the lower rear shelf of the RRC770 provides this capability. Figure 3 Deep Vacuum To Deep Vacuum the A/C System, refer to Figure 3 and follow these steps: 1. Connect Red and Blue Hoses to the high and low sides of the A/C System. 2.
RTI Technologies, Inc. HOSE EVACUATION It's important that Air not be introduced into the A/C System during a Charging procedure. If a Deep Vacuum procedure was performed previously, the following Hose Evacuation Procedure is not required. If the service valves on the hoses have been open, the following procedure must be performed. Figure 4 Hose Evacuation To Evacuate Hoses, refer to Figure 4 and follow these steps: 1. Close Red and Blue Hose Valves. 2.
RTI Technologies, Inc. CHARGE/HIGH SIDE Figure 5 Charge/High Side To Charge Refrigerant, refer to Figure 5 and follow these steps: 1. Perform Hose Evacuation described previously. 2. Connect Red and Blue Hoses to the A/C System per the vehicle manufacturer's instructions. 3. Determine the refrigerant capacity of the A/C system to be charged. This data is usually printed on a tag located on the accumulator or under the hood of the vehicle.
RTI Technologies, Inc. Note: Skip to step 5 if charging to an optional 30 lb DOT Refillable Cylinder via the short Yellow Hose attached to the rear port. 4. Open Red and Blue Hose Valves. 5. Press top (ON) of rocker switch marked POWER ON/TEST. 6. Press top (ON) of rocker switch marked CHARGE/HIGH SIDE. Do not start the Vehicle's Engine. Refrigerant will flow into the high side of the A/C System. Closely monitor the liquid level as it lowers in the Charging Cylinder Sight Glass. 7.
RTI Technologies, Inc. SCHEDULED MAINTENANCE BEFORE EACH USE...Check the oil level in the Compressor and Vacuum Pump DAILY before using. The Compressor Oil Level Sight Glass is on the left side of the lower section of the RRC770. The Vacuum Pump Oil Level Sight Glass is on the end of the pump housing. The oil level should simply be visible in the glass. If oil is not visible or is above the top of the glasses call Technical Support at 800-468-2321. MONTHLY...
RTI Technologies, Inc. PROBLEMS & SOLUTIONS On rare occasion the RRC770 may seem to be performing incorrectly. Experience has shown that varying operating conditions can affect the performance characteristics of the RRC770. The temperature of the vehicle A/C System will affect how the RRC770 performs. Following are typical problems with explanations of the possible cause and solution. PROBLEM: My RRC770 worked fine all last Summer.
RTI Technologies, Inc. PROBLEM: I turned a 30 lb. cylinder of new refrigerant upside down to fill the Charging Cylinder with liquid. The Charging Cylinder didn't fill and now the RRC770 won't recover from an A/C system. SOLUTION: The RRC770 has been overloaded with liquid refrigerant (see Safety Precaution Section at the beginning of this manual). ... WARNING ... IF A CYLINDER IS TURNED UP-SIDE-DOWN, THE RRC770 WILL OVERFILL WITH LIQUID REFRIGERANT. THIS OVER FILLS THE SUCTION ACCUMULATOR WITH LIQUID.
RTI Technologies, Inc.
RTI Technologies, Inc.