Related Manuals for Friedrich Hazardgard SH15L30-A
Summary of Contents for Friedrich Hazardgard SH15L30-A
- Page 1 Service & Parts Manual 2005 Room Air Conditioners 50 & 60 Hz Models SH15L30-A SH20L30-A SH20L50-A HG-SVC-PRTS-05 (4-05)
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Page 2: Table Of Contents
TABLE OF CONTENTS PAGE Specifi cations ........................... 3 Performance Data ..........................3 Component Operation & Testing ...................... 4 Compressors ............................ 4 Thermal Overload ..........................4 Checking Compressor Effi ciency ...................... 5 Fan Motor ............................5 Solid State Relay ..........................5 System Control Switch ........................ -
Page 4: Component Operation & Testing
COMPONENT OPERATION AND TESTING FIGURE 2 COMPRESSOR WINDING TEST WARNING DISCONNECT ELECTRICAL POWER TO THE UNIT BEFORE SERVICING OR TESTING COMPRESSORS Compressors are single phase, 208/230 volt. All compressor motors are permanent split capacitor type, using only a running capacitor across the start and run terminal. -
Page 5: Checking Compressor Effi Ciency
GROUND TEST FAN MOTOR (Figure 4) Use an ohmmeter set on its highest scale. Touch one A 230 volt single phase permanent split capacitor motor is used to drive the evaporator blower and condenser lead to the compressor body (clean point of contact, fan. -
Page 6: System Control Switch
SYSTEM CONTROL SWITCH (Figure 6) CAPACITOR – TEST Remove the capacitor from the unit. This switch is double pole, single throw. Check for continuity between terminals 2 and 3, and 5 and 6. 2. Check for visual damage such as bulges, cracks, or leaks. - Page 7 TEST Remove the wires from the thermostat. Turn the Note: The temperature must be within the range listed thermostat to its coldest position. Check to see if to check the thermostat. Refer to the troubleshooting there is continuity between the two terminals. Turn the section in this manual for additional information on thermostat to its warmest position.
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Page 8: Low Ambient Bypass Valve
LOW AMBIENT BYPASS VALVE (Figure 9) SEALED REFRIGERATION SYSTEM REPAIRS The HazardGard unit is designed to operate at low outside ambient temperatures. This is accomplished by EQUIPMENT REQUIRED: the use of a bypass valve installed in the refrigeration circuit. The valve is connected between the discharge 1. -
Page 9: Hermetic Component Replacement
HERMETIC COMPONENT REPLACEMENT NOTE: This procedure can be sped up by the The following procedure applies when replacing use of heat lamps, or by breaking the vacuum components in the sealed refrigeration circuit or with refrigerant or dry nitrogen at 5,000 microns. repairing refrigerant leaks. -
Page 10: Rotary Compressor Special Troubleshooting & Service
The terminal markings are on the cover gasket. the discharge valve of the rotary compressor. Use your wiring diagram to insure the correct connections. NOTE: All inoperative compressors returned to Friedrich must have all lines properly plugged with the plugs from the replacement compressor. -
Page 11: Troubleshooting
TROUBLESHOOTING PROBLEM POSSIBLE CAUSE TO CORRECT Power disconnected. Check power source. System switch in “Off” Set switch correctly. position. Replace fuse, reset breaker. If repeats, check fuse Branch circuit fuse blown or or breaker size. Check for shorts in unit wiring and circuit breaker tripped. - Page 12 TROUBLESHOOTING (Continued) PROBLEM POSSIBLE CAUSE TO CORRECT Compressor attempts to start Allow a minimum of two (2) minutes to allow pressures to before system pressures are equalize before attempting to start. equalized. Check voltage with unit operating. Check for other Low or fl...
- Page 13 TROUBLESHOOTING (Continued) PROBLEM POSSIBLE CAUSE TO CORRECT Defective switch (On-Off). Check continuity across terminals 2 and 3. Check by substituting a known good capacitor of the Fan capacitor open. same rating. Inoperative fan motor. Direct test fan motor. FAN MOTOR DOES NOT RUN.
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Page 14: Wiring Diagram
WIRING DIAGRAM MODELS SH15L30-A, SH20L30-A, SH20L50-A... -
Page 15: Cabinet Parts Diagram
HAZARDGARD CABINET PARTS... -
Page 16: Chassis Parts Diagram
HAZARDGARD CHASSIS PARTS... -
Page 17: Parts List
HAZARDGARD PARTS LIST DESCRIPTION PART NO# MODELS CODE ELECTRICAL PARTS COMPRESSOR 61193549 COMPRESSOR 61193550 COMPRESSOR 61193565 MOTOR, FAN 61871426 MOTOR, FAN 61871427 MOTOR, FAN 61871450 SWITCH, ON-OFF DPST 60935300 INSULATOR, ELECTRICAL 61829700 RELAY, SOLID STATE 61108800 THERMOSTAT 61825502 CAPACITOR 20/7.5 440 V. 61080546 CAPACITOR 25/7.5 440 V 61080547... - Page 18 HAZARDGARD PARTS LIST DESCRIPTION PART NO# MODELS CODE CHASSIS PARTS SHROUD, CONDENSER 61803601 SHROUD, CONDENSER 61804901 BRACE, COND.SHROUD 61802600 FAN BLADE, COND. 60542003 FAN BLADE, COND. 60542004 BLOWER WHEEL, EVAP. 60610616 BLOWER WHEEL, EVAP. 60610617 SCROLL 61814905 SCROLL 61817505 BLOWER FRONT 61817300 BLOWER FRONT 61817400...
- Page 20 Use Factory Certifi ed Parts. FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · FAX (210) 357-4480 www.friedrich.com HG-SVC-PRTS-05 (4-05) Printed in the U.S.A.