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100439_RevC.qxd 9/2/05 m 3:02 PM Page 3 IMPORTANT SAFETY INFORMATION m SAFETY COMES FIRST! Read all safety, operating guidelines and instructions before operating your 25176B. 8. 1. CAUTION: ONLY A QUALIFIED TECHNICIAN SHOULD OPERATE THIS RECOVERY UNIT. The operator must be familiar with air conditioning and refrigeration systems, refrigerants and the dangers of pressurized components. 9. If you expect temperatures in excess of 135° F, contact the refrigerant supplier. 10.
100439_RevC.qxd 9/2/05 3:02 PM Page 4 OPERATING GUIDELINES m Before operating the 25176B recovery unit, read the following m 9. storage tank. DO NOT OVERFILL. Tank is full at 80% volume. Tank may explode if filled more than 80% due to liquid expansion. Below is a representative sample for R-22 refrigerant: 1.
100439_RevC.qxd 9/2/05 3:02 PM Page 5 OPERATING GUIDELINES - cont. NOTE: If there is no liquid in the recovery tank, then the cooling method will not work. In this case, use an empty tank that has been fully evacuated to achieve the final vacuum level required. 15. To maximize recovery rates, use the shortest possible length of 3/8" or larger hose. A hose no longer than 3 feet is recommended. 16.
100439_RevC.qxd 9/2/05 3:02 PM Page 6 ADDITIONAL RECOVERY TANK INFORMATION m Warning: Also read the information pertaining to recovery tanks, previously listed under Safety Information and Operating Guidelines. 3. Tanks and filters should be designated for one refrigerant only. Before using a tank previously used for another refrigerant, completely empty the tank, evacuate it and purge the tank using dry nitrogen, and then re-evacuate it. 1. CAUTION: NEVER use a standard disposable 30lb.
100439_RevC.qxd 9/2/05 3:02 PM Page 7 PURGING NON-CONDENSABLE GASES FROM REFRIGERANT TANK 1. Allow the tank to sit undisturbed for 24 hours. This allows the air to rise to the top. 5. If the pressure reading is higher than the pressure shown on the chart, very slowly (so as not to cause turbulence inside the tank) crack open the vapor port valve. Watch the pressure on the gauge decrease. To prevent venting, add 4-5 psi to the pressure shown on the chart.
100439_RevC.qxd 9/2/05 3:02 PM Page 8 HELPFUL HINTS FOR REFRIGERANT RECOVERY Refrigerant recovery has come a long way in a few short years. On the surface it's simply the process of taking refrigerant out of a system and putting it into a tank. However, this simple process can quickly become problematic if a few items are overlooked. The following are some tips and pointers we've accumulated over the last few years that can save you time and make the process go smoother.
100439_RevC.qxd 9/2/05 3:02 PM Page 9 HELPFUL HINTS FOR REFRIGERANT RECOVERY - cont. This is probably never noticed in charging, because the pressure opens the grommet, but during recovery (or with suction) the deformed grommet severely restricts the flow of refrigerant. KEEPING THE DIRT OUT During the recovery process your recovery machine can be exposed to debris that can, potentially, damage it. This includes brazing spatter and copper/ brass slithers.
0439_RevC.qxd 9/2/05 3:02 PM Page 10 OPERATING YOUR 25176B PROCEDURE FOR NORMAL SYSTEM RECOVERY 1. Inspect the 25176B thoroughly to insure that it is in good operating condition. 8. Slowly open the input port on the 25176B. a. If the compressor starts to knock, slowly throttle back the input valve until the knocking stops. b.
100439_RevC.qxd 9/2/05 3:02 PM Page 11 SELF PURGING YOUR 25176B PROCEDURE FOR PURGING REMAINING REFRIGERANT FROM THE 25176B 1. Close the ports of the system being serviced that are connected to the input port of the 25176B. 7. Close the ports on the recovery tank and the 25176B. 2. Close the input port on the 25176B. 8. Turn the 25176B off. 3. Turn off the 25176B. 9. Return the Recover/Purge valve to the Recover position. 4. Turn the Recover/Purge valve to the Purge position. 10.
100439_RevC.qxd 9/2/05 3:02 PM Page 12 DIAGRAM FOR “PUSH/PULL” METHOD Push/pull method only works with large systems where the liquid is readily accessible. Do not use this method on systems that contain less than 15 lbs. as it may not work. The sight glass is used to provide a method of determining the moisture content and quality of a system’s refrigerant.
100439_RevC.qxd 9/2/05 3:02 PM Page 13 OPTIONAL RECOVERY/TANK PRE OR SUB COOLING FOR FIXED HOSE SET-UP INPUT m A scale must be used to avoid over filling the storage tank. NORMAL RECOVERY: Tank Vapor valve is closed TANK PRE OR SUB COOLING: Tank Vapor valve is open and both manifold gauge set valves are closed.
15 Special consideration for filtration must be given when you know you are servicing a machine that has “Burned Out.” We recommend the use of two size 162 filter driers, in line, to be used for that job and that job only. The use of a filter will greatly reduce the risk of damage to your 25176B by preventing foreign material from entering the unit. 3:02 PM A filter must always be used. Failure to use a filter will invalidate your warranty. 9/2/05 NOTE: 100439_RevC.
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100439_RevC.qxd 9/2/05 3:02 PM Page 16 25176B WIRING DIAGRAM WIRE NUT WHITE RED 1 2 POWER SWITCH GREEN 0 WHITE SHORT BROWN WIRE BLUE START SWITCH BRN YELLOW GREEN SIDE OF MANIFOLD MOTOR FAN GRN GREEN PRESSURE SWITCH MAIN H MOTOR 1/2 HP BLUE BRN RED RED C RED RED 7 L START BLK R S 5 2 1 6 4 R 3 H. P.
100439_RevC.qxd 9/2/05 3:02 PM Page 17 INSTALLATION OF OPTIONAL 80% TANK CAPACITY SENSING COMPONENTS (KIT: KT-5001) Note: ROBINAIR also offers the model, 25176B-KT, with the 80% Capacity Shut Off Kit installed at the factory. 10. Connect the white wire from the male side of the 3 pin connector (p/n EL1215) to terminal #1 of the relay. c Warning: Prior to performing any type of maintenance work on your 25176B, insure that it is disconnected from the power supply before you begin.
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100439_RevC.qxd 9/2/05 3:02 PM Page 19 FULL ONE YEAR WARRANTY MFG# Robinair products are warranted to be free from defects in workmanship and materials for a period of one year from date of purchase. THE FOLLOWING RESTRICTIONS APPLY: 1. The warranty applies to products in normal use only, as described in the operating manual. The product must also be serviced and maintained as described therein. 2. If the product fails, it will be replaced at the option of Advanced Test Products, Inc. (ATP) 3.
100439_RevC.qxd 9/2/05 3:02 PM Page 20 THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (EPA) REFRIGERANT RECOVERY AND RECYCLING DEVICE ACQUISITION CERTIFICATION FORM EPA regulations have required establishments that service or dispose of refrigerant or air conditioning equipment to certify that they have acquired recovery and recycling devices that meet the EPA standards for such devices since August 12. 1993.
100439_RevC.qxd 9/2/05 3:02 PM Page 21 INSTRUCTIONS EPA REGIONAL OFFICES Part 1. Please provide the name, address and telephone number of the establishment where the refrigerant recovery or recycling device(s) is (are) located. Please complete one form for each location. State the number of vehicles based at this location that are used to transport technicians and equipment to and from service sites.
100439_RevC.qxd 9/2/05 3:02 PM Page 22 ® Toll Free; 1-800-327-5060 Fax: www.RobinairHVAC.
