Related Manuals for Friedrich QuietMaster J Series
Summary of Contents for Friedrich QuietMaster J Series
- Page 1 1998 ® QuietMaster J Series KS10J10 KS12J10 KS12J30A KM18J30A KM21J30 KL25J30 Service & Parts Manual AMERICA’S BEST AIR CONDITIONER RAC-K (1/98) Page 1 https://manual-hub.com/...
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Page 2: Table Of Contents
TABLE OF CONTENTS PAGE GENERAL Friedrich Room Model Number Code ....................... 3 Application and Sizing ..........................4 Instructions for using Cooling Load Estimate Form .................. 5 Cooling Load Estimate Form ........................6 SPECIFICATIONS/PERFORMANCE DATA Specifications "KS" - "KM" - "KL" Models ....................7 Performance Data "KS"... -
Page 3: Friedrich Room Model Number Code
FRIEDRICH ROOM MODEL NUMBER CODE 1st DIGIT - FUNCTION S = Straight Cool, Value Series C = Straight Cool, Budget Series Y = Heat Pump E = Electric Strip K = Straight Cool, Challenger or QuietMaster Series W = Thru-The-Wall, WallMaster Series... -
Page 4: Application And Sizing
APPLICATION AND SIZING In the application and sizing of room air conditioners for cooling, it is most important to give full consideration to all factors which may contribute to the heat loss or gain of the space to be conditioned. It is therefore necessary to make a survey of the space to be conditioned and calculate the load requirements before a selection of the size of the equipment needed can be made. -
Page 5: Instructions For Using Cooling Load Estimate Form
INSTRUCTIONS FOR USING COOLING LOAD ESTIMATE FORM FOR ROOM AIR CONDITIONERS (AHAM PUB. NO. RAC-1) This cooling load estimate form is suitable for estimating the cooling load for comfort air conditioning installations which do not require specific conditions of inside temperature and humidity. The form is based on an outside design temperature of 95°F dry bulb and 75°F wet bulb. -
Page 6: Cooling Load Estimate Form
COOLING LOAD ESTIMATE FORM Page 6 https://manual-hub.com/... -
Page 7: Specifications "Ks" - "Km" - "Kl" Models
SPECIFICATIONS KS10J10 KS12J10 KS12J30A KM18J30A KM21J30 KL25J30A BTUH 12500 18000 21000 25000 10000 12000 12500 18000 20500 24700 E.E.R. 10.0 10.3 10.0 Volts Amperes 10.5 13.5 10.8 11.3 15.0 Total Watts 1250 1875 2335 3010 1265 1250 1875 2280 3010 Hertz Fuse/Breaker Size Fan RPM... -
Page 8: Components Operation/Testing
COMPONENTS OPERATION & TESTING GROUND TEST Use an ohmmeter set on its highest scale. Touch one WARNING lead to the compressor body (clean point of contact as a good connection is a must) and the other probe in DISCONNECT ELECTRICAL POWER TO turn to each compressor terminal (see Figure 2.) If a UNIT BEFORE SERVICING OR TESTING reading is obtained, the compressor is grounded and... -
Page 9: Thermal Overload (Internal)
The overload is wired in series with the common motor Should the internal temperature and/or current draw be- terminal. The overload senses both major amperage and come excessive, the contacts in the overload will open, compressor temperature. High motor temperature or turning off the compressor. -
Page 10: Capacitor - Test
CAPACITOR - TEST Figure 5: Fan Motor Remove capacitor from unit. Check for visual damage such as bulges, cracks, or leaks. For dual rated, apply an ohmmeter lead to com- mon (C) terminal and the other probe to the com- pressor (HERM) terminal. -
Page 11: Thermostat ("Ks", "Km", & "Kl" Models)
to supply a small amount of heat to the bulb area to Figure 7: System Control Panel prevent long “off cycles” in the “Cool-Fan Auto” (Money- Saver) position (see Figure 10.) A current feedback through the fan motor windings during “off cycle” com- pletes the circuit to the resistor. -
Page 12: Resistor
RESISTOR FIGURE 11 ROCKER SWITCH (Heat Anticipator) Failure of the resistor will cause prolonged “off” and “on” cycles of the unit. When replacing a resistor, be sure and use the exact replacement. Resistor ratings are as follows: 115 Volt - 5,000 ohms 3 watt 230 Volt - 20,000 ohms 3 watt Figure 10 RESISTOR MONEYSAVER... -
Page 13: Hermetic Component Replacement
a. Balance Scales - 1/2 oz. accuracy Leak test complete system with electric halogen leak detector, correcting any leaks found. b. Charging Board - 1/2 oz. accuracy Reduce the system to zero gauge pressure. 9. High Pressure Gauge - (0 - 400 lbs.) Connect vacuum pump to high side and low side 10. -
Page 14: Rotary Compressor Special Troubleshooting & Service
NOTE: All inoperative compressors returned to Friedrich must have all lines properly plugged with the plugs from the replacement compressor. Page 14... -
Page 15: Troubleshooting Cooling
Troubleshooting Cooling PROBLEM POSSIBLE CAUSE TO CORRECT Low voltage. Check for voltage at compressor. 1115 volt and 230 volt units will operate at 10% voltage variance. Thermostat not set cold Set thermostat to coldest position. Test thermostat and enough or inoperative. replace if inoperative. - Page 16 PROBLEM POSSIBLE CAUSE TO CORRECT Fuse blown or circuit tripped. Replace fuse, reset breaker. If repeats, check fuse or breaker size. Check for shorts in unit wiring and compo- nents Unit does not run. Power cord not plugged in. Plug in power cord System switch in "Off"...
- Page 17 PROBLEM POSSIBLE CAUSE TO CORRECT Overload inoperative. Opens Check operation of unit. Replace overload if system too soon. operation is satisfactory. Compressor attempts Compressor attempts to start Allow a minimum of two (2) minutes for pressures to to start, or runs for before system pressures are equalize before attempting to restart.
- Page 18 PROBLEM POSSIBLE CAUSE TO CORRECT Thermostat differential too Replace thermostat. narrow. Plenum gasket not sealing, Check gasket, reposition or replace. Thermostat short allowing discharge air to short cycles. cycle the thermostat. Restricted coil or dirty filter. Clean and advise customer of periodic cleaning of filter. Thermostat bulb touching Adjust bulb bracket.
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- Page 22 QUIETMASTER "KS" - "KM" SERIES PARTS LIST REF. PART NO. DESCRIPTION APPLICATION ELECTRICAL PARTS 615-628-09 Compressor, Tecumseh, 115 V., 60 Hz., 1 Ph., Model RK5510E ........615-628-00 Compressor, Tecumseh, 115 V., 60 Hz., 1 Ph., Model RK5512E ........615-628-04 Compressor, Tecumseh, 115 V., 60 Hz., 1 Ph., Model RK5512EXD ......617-187-01 Compressor, Bristol, 230/208 V., 60 Hz., 1 Ph., Model H23B175ABCC .......
- Page 23 QUIETMASTER "KS" - "KM" SERIES PARTS LIST REF. PART NO. DESCRIPTION APPLICATION REFRIGERATION SYSTEM COMPONENTS (Cont.) 618-027-00 Panel Assembly, Left Side ..................... 618-042-00 Panel Assembly, Left Side ..................... 618-028-00 Partition, Control Box ....................618-043-00 Partition, Control Box ....................618-204-00 Bracket, Capacitor Mounting ..................618-207-00 Strap, Capacitor ......................
- Page 24 QUIETMASTER "KS" - "KM" SERIES PARTS LIST REF. PART NO. DESCRIPTION APPLICATION CHASSIS PARTS (Cont.) 914-004-00 Bolt, Compressor Mounting ....................618-102-00 Plenum Assembly ......................618-093-00 Knob, Fresh Air & Exhaust ....................618-092-00 Lever, Fresh Air & Exhaust ....................618-062-00 Connector, Louver ......................618-063-00 Louver, Grille ........................
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Page 27: Electrical Parts
QUIETMASTER "KL" SERIES PARTS LIST REF. PART NO. DESCRIPTION APPLICATION ELECTRICAL PARTS 615-935-47 Compressor, Tecumseh, 230/208 V., 60 Hz., 1 Ph., Model AWR5524EXN ........610-714-85 Motor, Fan ............................. 605-000-49 Cord, Electric Supply - 20 Amp., 250 Volt .................... 606-072-03 System Switch ............................618-061-00 Rocker Switch ............................ - Page 28 QUIETMASTER "KL" SERIES PARTS LIST REF. PART NO. DESCRIPTION APPLICATION CHASSIS PARTS (Cont.) 606-106-02 Blower Wheel ........................... 618-066-00 Inner Wall ............................. 618-067-00 Mount, Motor ............................618-077-00 Shroud ..............................618-100-00 Brace, Shroud ............................618-169-02 Insulation, Inner Wall ........................... 618-178-00 Blower Front ............................618-181-00 Scroll ..............................
- Page 29 Use Factory Certified Parts . . . Friedrich Air Conditioning Co. 4200 North Pan Am Expressway • P .O. Box 1540 San Antonio, Texas 78295-1540 • U.S.A. Phone: (210) 357-4400 Fax: (210) 357-4480 Page 29 RAC-K (1/98) Printed in U.S.A.
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