Friedrich Hazardgard SH15L30-C Service Manual Download Page 1

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Service Manual

Room Air Conditioners

HG-ServMan (04-09)

Model:

SH15L30-C
SH15L30-D
SH20L30-C
SH20L30-D

Summary of Contents for Hazardgard SH15L30-C

Page 1: ...Service Manual Room Air Conditioners HG ServMan 04 09 Model SH15L30 C SH15L30 D SH20L30 C SH20L30 D...

Page 2: ...IONING 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 4490 www friedrich com Printed in the U S A TECHNICAL SUPPORT...

Page 3: ...n Data 6 Electrical Data 7 HazardGard Special Features 8 Control Panel 8 Component Definitions 9 Component Testing 10 11 Sealed System Refrigeration Repairs 12 Refrigerant Charging 12 15 Compressor Ch...

Page 4: ...sistant if possible Capacitors even when disconnected from the electrical power source retain an electrical charge potential capable of causing electric shock or electrocution Handle discharge and tes...

Page 5: ...contact with liquid refrigerant can result in minor to moderate injury Be extremely careful when using an oxy acetylene torch Direct contact with the torch s flame or hot surfaces can cause serious b...

Page 6: ...rty Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit Do not drill holes in the bottom of the drain pan or the underside of the unit Failure to follow th...

Page 7: ...g L Nov C Mar F Jun J Sept M Dec 1st Digit Function S Straight Cool Value Series H HazardGard 3rd and 4th Digit Approximate BTU HR Cooling Heating BTU Hr capacity listed in the Specifi cation Performa...

Page 8: ...t Locked Rotor Amps Charge in OZ 60 Hertz Amps SH15L30 C 54 26 206 129 61 16 98 76 258 8 2 43 28 5 208 230 15 SH15L30 D 54 26 206 129 61 16 98 76 258 8 2 43 28 5 208 230 15 SH20L30 C 46 34 125 196 52...

Page 9: ...PA 70 ARTICLE 501 THE FIELD PROVIDED CIRCUIT PROTECTION DEVICE HACR CIRCUIT BREAKER OR TIME DELAY FUSE MUST NOT EXCEED THE AMPACITY INDICATED ON THE PRODUCT NAMEPLATE IMPORTANT Before you begin the ac...

Page 10: ...it Condensate drain with exclusive mosquito trap 15 amp circuit with time delay fuse required Accommodates direct wiring Long lasting 3 8 10mm thick air filter germicidally treated easily removed for...

Page 11: ...diagrams and schematics in the back of this service manual Solid State Relay Used to energize the compressor and fan motor Each unit has 2 50 amp 208 230 volt relays Capacitor Reduces line current and...

Page 12: ...n or shorted It will tell whether the capacitor is within its micro farads rating and it will show whether the capacitor is operating at the proper power factor percentage The instrument will automati...

Page 13: ...valve to open and bypass hot gas from the high pressure side to the low pressure side of the system The hot gas entering the compressor mixes with the cool gas returned through the suction line thus...

Page 14: ...for the compressor motor When this occurs the motor winding temperature will increase causing the motor to overheat and possibly cycle open the compressor overload protector Continued overheating of...

Page 15: ...EZE HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch Failure to follow these procedures could result in moderate or serious injury...

Page 16: ...evaporator will not be encountered because the refrigerant will boil later if at all Gauges connected to system will usually have higher head pressure depending upon amount of over charge Suction pres...

Page 17: ...a partial restriction there may be gurgling sounds at the metering device entrance to the evaporator The evaporator in a partial restriction could be partially frosted or have an ice ball close to th...

Page 18: ...Test NOTE Consult the specification and performance section for running amperage The L R A can also be found on the rating plate Select the proper amperage scale and clamp the meter probe around the w...

Page 19: ...inals common to run C to R Add values C to S and C to R together and check resistance from start to run terminals S to R Resistance S to R should equal the total of C to S and C to R In a single phase...

Page 20: ...tem will need to be cleaned up following proper procedures 7 Install the replacement compressor 8 Pressurize with a combination of R 22 and nitrogen and leak test all connections with an electronic or...

Page 21: ...se a biodegradable cleaning agent and degreaser to prevent damage to the coil and or base pan NOTICE NOTICE Inspect the indoor blower housing evaporator blade condenser fan blade and condenser shroud...

Page 22: ...yearly or bi yearly and clean of all obstructions and debris Clean both areas with an antibacterial and antifungal cleaner Rinse both items thoroughly with water and ensure that the drain outlets are...

Page 23: ...or runs continually Does not cycle off Excessive heat load Test cooling performance of unit Unit undersized Restriction in line Check for partially iced coil Check temperature split across coil Refrig...

Page 24: ...motor runs Thermostat contacts not closing Check continuity of thermostat at coldest setting If compressor runs replace thermostat Low voltage supply Check for nameplate voltage Provide proper voltage...

Page 25: ...or blower wheel clearance Compressor vibrating Check for deteriorated compressor grommets Replace as needed Loose cabinet parts improperly mounted components tubing rubbing Adjust and tighten as requ...

Page 26: ...24 ELECTROMECHANICAL CONTROL COOL ONLY MODELS SH15L30 C SH15L30 D SH20L30 C SH20L30 D...

Page 27: ...Room Air Conditioner that has been subject to a accident misuse flood fire or neglect b repairs or alterations outside of the Friedrich Authorized Dealer or Service Center so as to affect adversely i...

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Page 31: ...IONING 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 4490 www friedrich com Printed in the U S A TECHNICAL SUPPORT...

Page 32: ...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 4490 www friedrich com Printed in the U S A HG Serv...

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