REFRIGERANT RECOVERY SYSTEM USER’S OPERATING MANUAL 25175B ADVANCED TEST PRODUCTS. INC • Miramar, FL Telephone: (954) 499-5400 • Fax: (954) 499-5454 • Toll Free: (800) 327-5060 www.RobinairHVAC.
TABLE OF CONTENTS IMPORTANT SAFETY INFORMATION OPERATING GUIDELINES 3 4-5 CARE AND MAINTENANCE OF YOUR 25175B 5 ADDITIONAL RECOVERY TANK INFORMATION PURGING NON-CONDENSABLE GASES HELPFUL HINTS FOR REFRIGERANT RECOVERY OPERATING YOUR 25175B DIAGRAM FOR REFRIGERANT RECOVERY SELF PURGING YOUR 25175B SELF PURGE/AUTO EVACUATE DIAGRAM FOR “PUSH/PULL” METHOD 6 7 8-9 10 10 11 11 12 SET-UP DIAGRAM FOR TANK PRE OR SUB COOLING PROCEDURE 12 OPTIONAL RECOVERY / TANK PRE OR SUB COOLING FOR FIXED HOSE SET-UP 13
m IMPORTANT SAFETY INFORMATION m SAFETY COMES FIRST! Read all safety, operating guidelines and instructions before operating your 25175B. 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. Read all safety information regarding the safe handling of refrigerant and refrigerant oil, including the Material Safety Data Sheet.
OPERATING GUIDELINES m Before operating the 25175B 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%duetoliquid expansion. Below is a representative sample for R-22 refrigerant: 1.
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. 14. If the tank pressure exceeds 300 psi, use the tank cooling procedure to reduce the tank pressure. (See Pages 12 & 13) 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.
ADDITIONAL RECOVERY TANK INFORMATION m Warning: used for another refrigerant, completely empty the tank, evacuate it and purge the tank using dry nitrogen, and then re-evacuate it. Also read the information pertaining to recovery tanks, previously listed under Safety Information and Operating Guidelines. 3. Always store refrigerant containers in a cool dry place. 1.CAUTION: NEVER use a standard disposable 30lb. tank (the type of container in which virgin refrigerant is sold) to recover refrigerant.
PURGING NON-CONDENSABLE GASES FROM REFRIGERANT TANK 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. when the gauge corresponds to that pressure, close the vapor port valve. 1. Allow the tank to sit undisturbed for 24 hours. This allows the air to rise to the top. 2.
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.
HELPFUL HINTS FOR REFRIGERANT RECOVERY - cont. KEEPING THE DIRT OUT 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. 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. Further contamination can be introduced from the refrigerant storage tanks.
OPERATING YOUR 25175B PROCEDURE FOR NORMAL SYSTEM RECOVERY 1. Inspect the 25175B thoroughly to insure that it is in good operating condition. It may be necessary, under certain circumstances, to press this switch more than once to start the compressor. 2. Make sure all connections are correct and tight (see set-up diagram below). 8. Slowly open the input port on the 25175B. 3. Open the liquid port of the recovery cylinder (always open valves slowly to check hoses and connections for leaks). 4.
SELF PURGING YOUR 25175B PROCEDURE FOR PURGING REMAINING REFRIGERANT FROM THE 25175B 1. Close the ports of the system being serviced that are connected to the input port of the 25175B. 7. Close the ports on the recovery tank and the 25175B. 2. Close the input port on the 25175B. 8. Turn the 25175B off. 3. Turn off the 25175B. 9. Return the Recover/Purge valve to the Recover position. 4. Turn the Recover/Purge valve to the Purge position. 10.Disconnect and store all hoses. 5. Restart the 25175B. 11.
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. m CAUTION: When using the “Push/Pull” method, once the siphon is started, it can continue and overfill the storage tank even if the tank is equipped with a float level sensor.
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.
REFRIGERANT FLOW DIAGRAM 14
25175B PARTS DIAGRAM 1 4 3 13 2 14 23 15 28 27 25 12 9 24 8 7 22 11 29 10 16 5 6 17 26 30 18,19, 20 21 25175B PARTS LIST ITEM DESCRIPTION PART# 1 REAR COVER (R121839) 2 FAN GRILL, OUTLET (R122276) 3 FAN (EL1817) 4 CONDENSER (100478) 5 COMPRESSOR (CP1320) 6 COMPRESSOR BRACKET (100207) 7 COUPLER (CP1315) 8 BELL HOUSING (CP1001) 9 MOTOR BRACKET (100528) 10 MOTOR (EL1821) 11 12 13 14 15 16 17 18 19 20 21 FRONT PANEL MANIFOLD INPUT GAUGE OUTPUT GAUGE GAUGE LENS ON/OFF SWITCH START SWITCH
25175B WIRING DIAGRAM 25175B-KT WIRING DIAGRAM INCLUDING OPTIONAL TANK CAPACITY SENSING CIRCUITRY (KIT:KT5001) 16
INSTALLATION OF OPTIONAL 80% TANK CAPACITY SENSING COMPONENTS (KIT:KT5001) Note: ROBINAIR also offers the model, 25175B-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 mainte- Note: Ensure that the green wire from the sensor cord is connected to the center of the 3-pin connector. (Note: only two wires are used in this connector).
TROUBLESHOOTING YOUR 25175B SAFETY FIRST Read and understand all safety information contained in this manual before servicing the unit.
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.
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.
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. CONNECTICUT, MAINE, MASSACHUSETTS, NEW HAMPSHIRE, RHODE ISLAND, VERMONT CAA608 Enforcement Contact: EPA Region 1.
Miramar, FL Phone: 954-499-5454 Toll Free; 1-800-327-5060 Fax: 954-499-5454 www.RobinairHVAC.com MADEin the USA PN/ 100399 Rev.
