OPERATION & MAINTENANCE MANUAL TC2670E & TC2670V Refrigerant Recycling Center RTI Technologies, Inc. 4075 E. Market St. P.O. Box 3099 York, PA 17402 USA 717-840-0678 ext. 259 tech@rtitech.
TABLE OF CONTENTS TC2670 Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Filling the Charging Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recover/Recycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Oil Drain & Air Purge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Vacuuming . . . . . . . . . . . . . . . . . . . . . . . . .
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 TC2670 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 refrigerants 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 TC2670 operating procedures sequentially to avoid prematurely disconnecting hoses or opening valves which may release refrigerant to the atmosphere. ! Do not expose the TC2670 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 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 TC2670 be filled until about 3 pounds of liquid refrigerant can be seen in the Charging Cylinder Sight Glasses. The Sight Glasses are visible through slotted openings on the front of the TC2670.
RTI Technologies, Inc. 2. Press top (ON) of rocker switch marked R12 POWER. 3. Press top (ON) of rocker switch marked RECOVER RECYCLE. 4. Open Low Side Gauge Manifold Valve, Blue Hose Valve and refrigerant cylinder valve. 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. Allow the TC2670 to continue to run until the Low Side Gauge shows a vacuum. This will empty the Blue Hose.
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. 5. Press top (ON) of rocker switch marked RECOVER/RECYCLE. The TC2670 will recover and recycle refrigerant from the A/C System, and then automatically cycle off when a vacuum is sensed. This vacuum level can be seen on the Low Side Gauge. ! DO NOT TURN THE TC2670 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: Note: TC2670 must be connected to power source. 1. Press and hold the Purge Button (below the Purge Gauge) for 5 seconds, and then release it. 2. SLOWLY open the Oil Drain Valve (located on rear of TC2670 towards outside) to drain any oil which may have been removed from the A/C System.
RTI Technologies, Inc. VACUUMING If the A/C System is "opened" for replacing components, a vacuum must be drawn on the system before recharging with refrigerant. This vacuuming process removes air and moisture introduced into the system. Figure 3 Vacuum To 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. Open Low and High Gauge Valves. 3. Open Red and Blue Hose Valves. 4.
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 and Blue Hoses to the A/C System high side per the vehicle manufacturer's instructions. Note... Do not open Gauge Manifold Valves. 3. Press top (ON) of rocker switch marked R12 POWER. 4. Press top (ON) of rocker switch marked CHARGE/HIGH SIDE.
RTI Technologies, Inc. EXAMPLE: The level of liquid visible in the TC2670 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 Glasses on the Charging Cylinders have markings for both R12 and R134a.
RTI Technologies, Inc. SCHEDULED MAINTENANCE BEFORE EACH USE... Check the oil level in the Compressors DAILY before using. The Oil Level Sight Tubes can been seen by shining a light into the bottom, middle of the side perforated panels in the lower section of the TC2670. The oil levels should simply be visible in the tube, not more than one inch up. If oil is not visible or is higher than one inch in the tubes call Technical Support at 800-468-2321. MONTHLY...
RTI Technologies, Inc. PROBLEMS & SOLUTIONS On rare occasion the TC2670 may seem to be performing incorrectly. Experience has shown that varying operating conditions can affect the performance characteristics of the TC2670. The temperature of the vehicle A/C System will affect how the TC2670 performs. Following are typical problems with explanations of the possible cause and solution. PROBLEM: My TC2670 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 TC2670 won't recover from an A/C system. SOLUTION: The TC2670 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 TC2670 WILL OVERFILL WITH LIQUID REFRIGERANT. THIS OVER FILLS THE SUCTION ACCUMULATOR WITH LIQUID.
