Friedrich racservmn service manual Equipment Must be Capable, Hermetic Component Replacement

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EQUIPMENT MUST BE CAPABLE OF:

1.Recovery CFC's as low as 5%.

2.Evacuation from both the high side and low side of the system simultaneously.

3.Introducing refrigerant charge into high side of the sys- tem.

4.Accurately weighing the refrigerant charge actually in- troduced into the system.

5.Facilities for flowing nitrogen through refrigeration tub- ing during all brazing processes.

HERMETIC COMPONENT REPLACEMENT

The following procedure applies when replacing components in the sealed refrigeration circuit or repairing refrigerant leaks. (Compressor, condenser, evaporator, capillary tube, refrigerant leaks, etc.)

1.Recover the refrigerant from the system at the process tube located on the high side of the system by installing a line tap on the process tube. Apply gauge from process tube to EPA approved gauges from process tube to EPA approved recovery system. Recover CFC's in system to at least 5%.

2.Cut the process tube below pinch off on the suction side of the compressor.

3.Connect the line from the nitrogen tank to the suction process tube.

4.Drift dry nitrogen through the system and un-solder the more distant connection first. (Filter drier, high side process tube, etc.)

5.Replace inoperative component, and always install a new filter drier. Drift dry nitrogen through the system when making these connections.

6.Pressurize system to 30 PSIG with proper refrigerant and boost refrigerant pressure to 150 PSIG with dry nitrogen.

7.Leak test complete system with electric halogen leak detector, correcting any leaks found.

8.Reduce the system to zero gauge pressure.

9.Connect vacuum pump to high side and low side of system with deep vacuum hoses, or copper tubing. (Do not use regular hoses.)

10.Evacuate system to maximum absolute holding pressure of 200 microns or less. NOTE: This process can be speeded up by use of heat lamps, or by breaking the vacuum with refrigerant or dry nitrogen at 5,000

microns. Pressure system to 5 PSIG and leave in system a minimum of 10 minutes. Release refrigerant, and proceed with evacuation of a pressure of 200 microns or less.

11.Break vacuum by charging system from the high side with the correct amount of refrigerant specified. This will prevent boiling the oil out of the crankcase.

NOTE: If the entire charge will not enter the high side, allow the remainder to enter the low side in small increments while operating the unit.

12.Restart unit several times after allowing pressures to stabilize. Pinch off process tubes, cut and solder the ends. Remove pinch off tool, and leak check the process tube ends.

SPECIAL PROCEDURE IN THE CASE OF

COMPRESSOR MOTOR BURNOUT

1.Recover all refrigerant and oil from the system.

2.Remove compressor, capillary tube and filter drier from the system.

3.Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent, to remove all contamination from system. Inspect suction and discharge line for carbon deposits. Remove and clean if necessary.

4.Reassemble the system, including new drier strainer and capillary tube.

5.Proceed with processing as outlined under hermetic component replacement.

ROTARY COMPRESSOR SPECIAL

TROUBLESHOOTING AND SERVICE

Basically, troubleshooting and servicing rotary compressors is the same as on the reciprocating compressor with only a few exceptions.

1.Because of the spinning motion of the rotary, the mounts are critical. If vibration is present, check the mounts carefully.

2.The electrical terminals on the rotary are in a different order than the reciprocating compressors. The terminal markings are on the cover gasket. Use your wiring diagram to insure correct connections.

REFRIGERANT CHARGING

NOTE: BECAUSE THE RAC SYSTEM IS A SEALED SYSTEM, SERVICE PROCESS TUBES WILL HAVE TO BE INSTALLED. FIRST INSTALL A LINE TAP AND REMOVE REFRIGERANT FROM SYSTEM. MAKE NECESSARY SEALED SYSTEM REPAIRS AND VACUUM SYSTEM. CRIMP PROCESS TUBE LINE AND SOLDER END SHUT. DO NOT LEAVE A SERVICE VALVE IN THE SEALED SYSTEM.

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Contents 2003 Table of Contents 1st Digit Function RAC Serial Number Identification Guide00001 Page Data Evaporator AIR Operating Electrical Breaker Pressures Ratings Refrig Fuse Performance Evaporator AIR Operating Electrical Breaker Data SS10J10AR-A TEMP. DEG. F Pressures Ratings Heating SC06H10EWY09A33F-A WY12A33F-A Heating BtuhAmps Refrigeration System Sequence of Operation Breaker Wire SizeFuse/Circuit GroundingThermal Overload External Winding TestChecking Compressor Efficiency Checking the Internal Overload Terminal Overload TestTerminal Overload Internal FAN MotorResistor System Control Panel KQ Models Only- See Figure System Control PanelEQ Model Only See Figure System Control Panel YQ Model Only System Control Switch WE & WY Models See Figure System Control Switch TestSystem Control Switch KS, SS, KM, SM, SL Models See Figure System Control Panel See FigureSystem Control Switch Heat Pump & Electric Heat Models See FigureTo Adjust FAN Speed To SET Mode of OperationTo Adjust Temperature Smart Center Electronic Control CenterTesting the Electronic Control Error Code Listings To SET the TimerTesting the Electronic Control To SET Hour ClockThermostat YQ Model Only See Figure TestThermostat SQ & KQ Models See Figure Thermostat Models ES, YS, EM, YM, EL, YL See FigureThermostat Adjustment Defrost Thermostat Heat Pump Models OnlyThermostat Bulb Location Defrost Bulb Location Heat Pump Models Only CAPACITOR, RUN See FigureCapacitor Test Check Valve Operation Heat Pumps Reversing Valve See FigureTesting Reversing Valve Solenoid Coil Heat Pump Models Only See FigureTo Test Sealed Refrigeration System Repairs VALVE, Drain PAN See FigureHeating Element See Figure Equipment RequiredRotary Compressor Special Troubleshooting and Service Hermetic Component ReplacementSpecial Procedure in the Case Compressor Motor Burnout Equipment Must be CapableUndercharged Refrigerant Systems Method of ChargingOvercharged Refrigerant Systems Restricted Refrigerant System Routine Maintenance Troubleshooting Touch Test Chart To Service Reversing Valves Troubleshooting Cooling Problem To CorrectProblem Possible Cause To Correct Cycles Problem Possible Cause To Correct Troubleshooting Heating Heat pumps Problem Possible Cause To Correct Off and the electric element is energized Troubleshooting Heating Cooling/Electric Models Troubleshooting Chart Cooling System Cools When Heating is Desired YESModels SQ06J10B-B, SQ06J10B-A, SQ08J10C-A, SQ08J10D-A Models KQ08J10B-1, KQ08J10B-A, KQ08J10C-A Schematic Model YQ06J10B-AModel SC06H10D 619-405-06 SL28J30B-A, SL35J30-A, SL35J30-B AlternateConductor Or Brown RED Blue To Capacitor Bracket Wiring Diagram YS12J33-A, YM18J34B-A, YL24J35C-A Model EQ08J11-A, EQ08J11-B IDT Ovld Neutral WE09A33E-B, WE12A33E-A, WE15A33-A WY09A33F-A, WY12A33G-A Testing The Electronic Control XQ Boards & QME Boards Checking Room TemperatureFriedrich AIR Conditioning CO

racservmn specifications

Friedrich Racervmn is an innovative name in the realm of precision engineering, making significant strides in the development of advanced technologies for various industries. This company stands out due to its commitment to creating high-quality, reliable, and efficient products that cater to the diverse needs of its clientele.

One of the main features of Friedrich Racervmn is its focus on research and development. The company invests heavily in R&D to push the boundaries of what is technically possible. This dedication results in the continuous improvement of their product line and the introduction of cutting-edge solutions that leverage the latest advancements in technology.

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Friedrich Racervmn’s customer service stands out as well. Their team is dedicated to providing exceptional support, ensuring that clients receive personalized attention and solutions tailored to their unique needs. This customer-centric approach is a fundamental part of their philosophy and has contributed to building strong and lasting relationships within the industry.

In summary, Friedrich Racervmn is a leader in precision engineering, recognized for its advanced technologies, innovative manufacturing processes, commitment to sustainability, and outstanding customer service. The company’s focus on quality and innovation positions it as a vital player in the modern industrial landscape, continuously pushing the envelope toward a more technologically advanced and environmentally conscious future.
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