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Friedrich SH20J30B-A manual

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Table of contents for the manual

  • Page 1

    AMERICA’S BEST AIR CONDITIONER 2002 HAZARDGARD ® ROOM AIR CONDITIONER Service & Parts Manual Models SH14J30B-A SH20J30B-A HG2002 (02/02)[...]

  • Page 2

    2 T ABLE OF CONTENTS Specifications ................................................................................................................. ... 3 Performance Data ............................................................................................................. 3 Component Operation & T esting ..............................[...]

  • Page 3

    3 * Rating Conditions: 80 ° F . Room Air T emperature and 59% Relative Humidity with 95 ° F . Outside Air T emperature at 40% Relative Humidity . PERFORMANCE EV APORA T OR AIR OPERA TING ELECTRICAL R-22 COMP . DA T A * TEMP° F PRESSURES RATINGS REFRIG. OIL DISCHARGE TEMP SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN AIR DROP °F ROTOR AMPS O[...]

  • Page 4

    4 COMPRESSOR WINDING TEST (See Figure 2.) Remove the compressor terminal box cover and disconnect the wires from the terminals. Using an ohmmeter , check continuity across the following: DISCONNECT ELECTRICAL POWER T O THE UNIT BEFORE SER VICING OR TESTING COMPONENT OPERA TION AND TESTING W ARNING COMPRESSORS Compressors are single phase, 208/230 v[...]

  • Page 5

    5 F AN MOTOR (Figure 4) A 230 volt single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan. A running capacitor is wired across the start and run terminals of the motor . The motor is totally enclosed and is protected with a line voltage overload located internally of the motor . The motor shaft is stai[...]

  • Page 6

    6 RED DOT RUN CAP ACIT OR FA N MOT OR COMPRESSOR FIGURE 6 RUN CAP ACITOR HOOK–UP CAP ACIT OR, RUN A run capacitor is wired across the auxiliary and main winding of a single phase permanent split capacitor motor such as the compressor and fan motors. A single capacitor can be used for each motor or a dual rated capacitor can be used for both. The [...]

  • Page 7

    7 Note: The temperature must be within the range listed to check the thermostat. Refer to the troubleshooting section in this manual for additional information on thermostat testing. TEST Remove the wires from the thermostat. T urn the thermostat to its coldest position. Check to see if there is continuity between the two terminals. T urn the therm[...]

  • Page 8

    8 LOW AMBIENT BY–P ASS V AL VE The HazardGard unit is designed to operate at low outside ambient temperatures. This is accomplished by the use of a bypass valve installed in the refrigeration circuit. The valve is connected between the discharge line at the compressor and the suction process tube. The valve responds to suction pressure which, whe[...]

  • Page 9

    9 10 . Evacuate the system to an absolute holding pressure of 200 microns or less. NOTE: This procedure can be speeded up by the 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 the system a minimum of 10 minutes. Recover refrigerant, and proceed with evacuation t[...]

  • Page 10

    10 NOTE: All inoperative compressors returned to Friedrich must have all lines properly plugged with the plugs from the replacement compressor . REFRIGERANT CHARGE 1. The refrigerant charge is extremely critical. Measure the charge carefully and as exactly as possible to the nameplate charge. 2. The correct method for charging the rotary is to intr[...]

  • Page 11

    11 PROBLEM POSSIBLE CAUSE TO CORRECT Unit does not run. PROBLEM POSSIBLE CAUSE TO CORRECT Dirty Filter . Restricted air flow . Inoperative thermostat. Short of refrigerant. Partially restricted capillary . Inoperative fan motor . Evaporator coil freezes up. PROBLEM POSSIBLE CAUSE TO CORRECT T est cooling performance of unit. Unit undersized. Check [...]

  • Page 12

    12 PROBLEM POSSIBLE CAUSE T O CORRECT Compressor attempts to start, or runs for short periods only . Cycles on overload. Allow a minimum of two (2) minutes to allow pressures to equalize before attempting to start. Check voltage with unit operating. Check for other appliances on the circuit. Unit should be on separate circuit for proper voltage, an[...]

  • Page 13

    13 PROBLEM POSSIBLE CAUSE T O CORRECT Replace selector switch. Replace relay . Selector Switch Relay PROBLEM POSSIBLE CAUSE T O CORRECT Refer to Installation Instructions for proper installation. Adjust motor mount to attain proper fan blade and blower wheel clearance. Check for deteriorated compressor grommets, or missing mounting parts. Adjust an[...]

  • Page 14

    14 WIRING DIAGRAM FOR SH14J30B-A & SH20J30B-A[...]

  • Page 15

    15 HazardGard Cabinet Parts[...]

  • Page 16

    16 HazardGard Chassis Parts[...]

  • Page 17

    17 HAZARDGARD P ARTS LIST REF . P ART NO. DESCRIPTION APPLICA TION SS HH 12 40 JJ 33 00 BB -- AA 1 61 1-935-49 Compressor , T ecumseh, 230/208V; 60 Hz 1 Ph, Model A WG5515EXN ...................... 1 1 1 61 1-935-50 Compressor , T ecumseh, 230/208 V ; 60 Hz 1 Ph, Model AWG5519EXN ..................... 1 1 2 618-714-26 Motor , Fan 1/8 HP ...........[...]

  • Page 18

    18 HAZARDGARD P ARTS LIST REF . P ART NO. DESCRIPTION SS HH 12 40 JJ 33 00 BB -- AA APPLICA TION 14 618-028-02 Partition, Control Box ............................................................................................. ............ 1 1 4 618-043-02 Partition, Control Box .....................................................................[...]

  • Page 19

    19 * 618-092-00 Lever , Fresh Air & Exhaust .................................................................................................. 1 1 * 618-062-00 Connector , Louver .............................................................................................................. .2 2 * 618-063-00 Louver , Grille ......................[...]

  • Page 20

    20 Friedrich Air Conditioning Co. 4200 North Pan Am Expressway P .O. Box 1540, San Antonio, T exas 78295-1540, USA T el. (210) 357/4400 Fax: (210) 357/4480 Printed in the U.S.A HG2002 (02/02) Certified Parts... Use Factory[...]