OPERATION & MAINTENANCE MANUAL TC670 Refrigerant Management Center (Convertible For Use With R12 or R134a) RTI TECHNOLOGIES, INC.
TC670 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 machine to recycle the alternate refrigerant for which it is now configured.
TABLE OF CONTENTS TC670 Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Filling the Charging Cylinder . . . . . . . . . . . . . . . . . . . . . . . 6 Recover/Recycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Oil Drain & Air Purge . . . . . . . . . . . . . . . . . . . . . . . . . . .
RTI Technologies, Inc.
RTI Technologies, Inc.
RTI Technologies, Inc. START-UP INSTRUCTIONS 1) Check for any shipping damage. Place a claim with carrier if damage is discovered. 2) Complete and return the Warranty Card to activate Technical Support and Warranty Coverage. Warranty claims can not be honored without this warranty card on file. BEFORE USING THE TC670 Check for any shipping damage. Place a claim with carrier if damage is discovered. DO NOT USE A DAMAGED UNIT.
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 TC670 operating procedures sequentially to avoid prematurely disconnecting hoses or opening valves which may release refrigerant to the atmosphere. ! Do not expose the TC670 to moisture or operate in wet areas.
RTI Technologies, Inc. i CAUTION T 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.
RTI Technologies, Inc. FILLING THE CHARGING CYLINDER 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 TC670 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 front of the TC670. Figure 1 Filling the Cylinder To fill the TC670 Charge Cylinder, refer to Figure 1 and follow these steps: 1.
RTI Technologies, Inc. 2. Press top (ON) of rocker switch marked RECOVER/RECYCLE. The TC670 will recover and recycle refrigerant into the Charging Cylinder. Observe the liquid refrigerant level rise in the Charging Cylinder Sight Glass and when at approximately 3 lbs. close the valve on the refrigerant cylinder. HINT: Heating of the cylinder of refrigerant with an RTI Heat Belt (P/N 026-80092-00) will speed the recovery process. Allow the TC670 to continue running until the Low Side Gauge shows a vacuum.
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. The TC670 will automatically recover and recycle refrigerant from the A/C System until a vacuum is sensed. This vacuum level can be seen on the Low Side Gauge. ! DO NOT TURN THE TC670 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.
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: 1. MOMENTARILY turn the Purge Valve (To the right of the Purge Chart) clockwise and hold until the pressure reading on the Pressure Gauge above this valve drops one small graduation mark (approximately 10 PSIG). 2.
RTI Technologies, Inc. DEEP VACUUM 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 TC670 provides the capability of performing this "Deep Vacuum and Dehydration".
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. Open High and Low Gauge Valves. 3.
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 Hose to the A/C System high side per the vehicle manufacturer's instructions. Do not open the hose valve. 3. Press top (ON) of rocker switch marked CHARGE/HIGH SIDE. The Charge Cylinder will now be heating to develop pressure for charging. 4. Open High Gauge Valve.
RTI Technologies, Inc. EXAMPLE: The level of liquid visible in the TC670 Charging 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.
RTI Technologies, Inc. SCHEDULED MAINTENANCE BEFORE EACH USE... Check the oil level in the Compressor DAILY before using. The Oil Level Sight Tube is visible through a cut-out in the left side of the black Compressor Cover at the bottom of the TC670. The oil level should be visible in the small nylon tube. If oil is not visible or is above the middle of the cut-out call Technical Support at 800-468-2321. MONTHLY... Clean the Condenser to maintain high efficiency performance of the TC670.
RTI Technologies, Inc. PROBLEMS & SOLUTIONS On rare occasion the TC670 may seem to be performing differently or not at all. Experience has shown that varying operating conditions can affect the performance characteristics of the TC670. The temperature of the vehicle A/C System will affect how the TC670 performs. Following are typical problems with explanations of the possible cause and solution. PROBLEM: My TC670 worked fine all last Summer.
RTI Technologies, Inc. PROBLEM: I turned a 30 lb. cylinder of new refrigerant up-side-down to pre-charge the Charging Cylinder with liquid. The Charging Cylinder didn't fill and now the TC670 won't recover from an A/C system. SOLUTION: The TC670 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 TC670 WILL OVERFILL WITH LIQUID REFRIGERANT.
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