OPERATION MANUAL RRC770 - UNDP Refrigerant Management Center (Convertible For Use With R12 or R134a) RTI Technologies, Inc. 10 Innovation Drive York, Pennsylvania 17402 USA Phone: 717-840-0678 Fax: 717-755-8304 www.rtitech.
RTI CONVERTIBLE RECYCLING MACHINE This Recycling Machine was manufactured by RTI in compliance with all applicable Underwriters Laboratories (UL) and Society of Automotive Engineers (SAE) Standards and Specifications for Refrigerant Recycling Equipment. Your machine is initially configured to recycle R12 or R134a. An RTI Retrofit Kit is available for field conversion of this machme to recycle the alternate refrigerant for which it is now configured.
TABLE OF CONTENTS RRC770 Before Using . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Pre-Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Recycle Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Oil Drain & RTI Rapid Air Purge System Procedure . . . . . 8 Deep Vacuum & Dehydration . . . . . . . . . . . . . . . . . . . . . .
BEFORE USING THE RRC770 Check for any shipping damage. DO NOT USE A DAMAGED UNIT. The RRC770 should not be operated or serviced by any person who has not read all the contents of this manual. Failure to read and comply with these instructions or any one of the limitations noted herein can result in serious injury and/or property damage. These general instructions describe normal operation and maintenance situations encountered with the RRC770.
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.
CAUTION Avoid breathing refrigerant or lubricant vapor or mist. Exposure may irritate eyes, nose and throat. If accidental system discharge occurs, ventilate work area before resuming service. 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.
PRE-CHARGING THE RRC770 A/C Systems requiring service often do not have a full charge of refrigerant. To avoid unnecessary repositioning of hoses it is recommended that the RRC770 be pre-charged until about 3 pounds of liquid refrigerant can be seen in the Internal Cylinder Sight Glass. The Sight Glass is visible through a slotted opening on the right side of the RRC770. Figure 1 - Pre-charging To pre-charge the RRC770, refer to Figure 1 and follow these steps: 1. Turn the Main Power Switch to Off. 2.
3. Set Mode Selector to RECYCLE. 4. Turn Main Power Switch to RECYCLE. The Compressor-On Light will illuminate and the RRC770 will recover and recycle refrigerant into the Internal Cylinder. Observe the liquid refrigerant level rise in the Internal Cylinder Sight Glass and when at approximately 3 lbs. close the Vapor Valve on the refrigerant cylinder. HINT: Heating of the cylinder of refrigerant with an RTI Heat Belt (P/N 02680092-00) will speed the recovery process.
RECYCLE MODE Figure 2 - Recycle To 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.. .
5. Turn Main Power Switch to RECYCLE. The Ready Light and Compressor-On light will illuminate. The Compressor and Condenser Fan will be heard operating as refrigerant is recovered from the A/C System. The RRC770 will recover refrigerant from the A/C System until a vacuum is sensed. The Compressor will turn off and the Compressor-On Light will turn off. DO NOT TURN THE RRC770 OFF OR DISCONNECT HOSES A small quantity of Liquid refrigerant will probably still remain in the A/C System.
OIL DRAIN & RTI RAPID AIR PURGE SYSTEM PROCEDURE Oil and Non-condensable Gas (Air) are separated from the recovered refrigerant and MUST be removed following EACH recycling procedure as follows: 1. Press and hold the Purge Button (on the right side of the RRC770) until the pressure reading on the Pressure Gauge above this Push Button drops one small graduation mark (approximately 5 PSIG). 2.
DEEP VACUUM & DEHYDRATION If the A/C System is "opened" for replacing components, it is important to draw a deep vacuum on the system before recharging with refrigerant. This vacuuming process not only removes air from the system, but just as importantly, will remove any moisture in the system. A Vacuum Pump in the RRC770 provides the capability of performing this "Deep Vacuum and Dehydration".
HOSE EVACUATION PROCEDURE It's important that Air not be introduced into the A/C System during a Charging procedure. If a Deep Vacuum and Dehydration 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 Control Settings Refer to Figure 4 for the following description of operation. 1. Close Red and Blue Hose Valves. 2.
CHARGE MODE Figure 5 - Charge Mode Control Settings Refer to Figure 5 for the following description of operation: 1. Perform Hose Evacuation Procedure described previously. 2. Connect Red Hose to the A/C System per the vehicle manufacturer's instructions. Do not open the hose valve. 3. Set Mode Selector to CHARGE. 4. Turn Main Power Switch to RECYCLE position. The Internal Charging Cylinder will now be heating to develop pressure for charging. 5. Open High Gauge Valve.
EXAMPLE: The level of liquid visible in the RRC770 Internal Cylinder Sight Glass is 7.4 lbs. and the A/C system capacity is 3.2 lbs. The following calculation results: (7.4) - (3.2) = 4.2 Therefore, the sliding indicator should be set at 4.2 lbs. in this example. When the liquid level lowers to the 4.2 lb. mark, a charge of 3.2 lbs. will have been delivered. NOTE... The Sight Glass on the Charging Cylinder has markings for both R12 and R134a. Always use the correct scale for accurate charging. 7.
SCHEDULED MAINTENANCE AFTER EVERY 10 HOURS OF OPERATION: Clean the Condenser to maintain high efficiency performance of the RRC770. Disconnect power and remove the Compressor Compartment Cover and blow compressed air through the cooling fins of the Condenser to remove any debris. It may be necessary to use a soft brush if the fins are excessively dirty. Do not bend the fins on the Condenser coil. Air flow will be restricted and cause damage to the RRC770.
PROBLEMS & SOLUTIONS On rare occasion the RRC770 may seem to be performing differently or not at all. 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.
PROBLEM: I turned a 30 lb. cylinder of new refrigerant up-side-down to pre-charge the Internal Cylinder with liquid. The Internal 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.
November 17, 2005 FLOW DIAGRAM - RRC770 - 220V - UNDP (2005) 570-80376-00 Page 16
November 17, 2005 SCHEMATIC - RRC770 - 220V - UNDP (2005) 570-80377-00 Page 17
Parts List Machine Catalog Number: 460-80282-00 16 17 1 P/N 15 CR1CR2CR3 S14 LPS 14 13 12 S8 360-80260-00 Gauge Assy 0-120 PSIG 2 022-80005-00 Relief Valve 3 360-82037-00 Charging Cylinder Assy 4 360-80748-01 Kit Sight Glass 5 026-80070-00 Accumulator Assembly 6 360-80369-02 D/P Switch Assembly 7 360-81307-00 High Pressure Switch - 261 PSIG 4 5 8 360-81048-01 Charging Cylinder Heater 9 360-80389-00 Fan Assy with Terms 220V 6 7 10 360-81700-01 Compressor Assy 11 026-80
