Friedrich 2010 HAZARDGARD SH15M30A Скачать руководство пользователя страница 25

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TROUBLESHOOTING

Problem

Possible Cause

Possible Solution

Unit does not run

Power disconnected.

Check power source.

Branch circuit fuse blown or circuit

breaker tripped.

Replace fuse, reset breaker. If repeats, check fuse

or breaker size. Check for shorts in unit wiring and

components.

Loose or disconnected wiring at

switch.

Check wiring & connections. Connect per wiring

diagram.

Inoperative switch (On-Off).

Test for continuity, 3 and 2, 5 and 6. If bad,

replace.

Problem

Possible Cause

Evaporator coil

freezes up

Dirty ﬁlte

Clean as recommended in Owner's Manual.

Restricted airﬂo

Check for dirty or obstructed coil clean as

required.

Inoperative thermostat.

Test for shorted thermostat or stuck contacts.

Short of refrigerant.

De-ice coil and check for leak.

Partially restricted capillary.

De-ice coil. Check temperature differential

across coil. Touch-test coil return bends for same

temperature. Test for low running current.

Inoperative fan motor.

Test fan motor & replace if inoperative.

Problem

Possible Cause

Compressor 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.

Refrigerant leak.

Check for presence of oil on silver soldered

connections. Check for partially iced coil. Check

split across coil. Check for low running amperage.

Thermostat contacts stuck.

Check operation of thermostat. Replace if contacts

remain closed.

Incorrect thermostat setting.

Set to correct setting.

Problem

Possible Cause

Thermostat

does not turn on

compressor

Loss of charge in thermostat bulb.

Replace thermostat.

Thermostat contacts open.

Test for continuity at terminals 1 and 2. Replace if

defective.

Incorrect wiring or loose wires.

Connect per wiring diagram. Tighten loose wires.

System switch open.

Test for continuity at switch terminals 2 and 3.

Problem

Possible Cause

Thermostat

does not turn off

compressor

Thermostat set at coldest point

Adjust.

Thermostat contacts stuck.

Disconnect power to the unit. Remove cover of

thermostat and check if contact is stuck, if so

replace thermostat.

Switch (On-Off) shorted.

Test switch for open contacts at terminals 2 and 3

with switch in “Off” position.

Содержание 2010 HAZARDGARD SH15M30A

Страница 1: ...R 410A Models Service Manual 2 0 1 0 HG ServMan 4 10 SH15M30A SH20M30A Cool Only Hazardous Duty Room Air Conditioner...

Страница 2: ...ard Special Features 9 Component Definitions 10 Component Testing 11 12 R 410A Sealed System Repair Considerations 13 Sealed Refrigeration System Repairs 14 17 Refrigerant Charging 14 17 Compressor Ch...

Страница 3: ...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...

Страница 4: ...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...

Страница 5: ...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 these instructions can result in result in damage to...

Страница 6: ...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...

Страница 7: ...obust engineering with design details like 33 thicker fins extend the life of the coil Diamonblue Technology our anti corrosive treatment provides added endurance and protection in coastal or corrosiv...

Страница 8: ...acteristics 60 Hertz Energy Efficiency Ratio AHAM Moisture Removal Air Direction Controls Room Side Air Circulation BTU Hr AHAM Volts Rated Amps AHAM Watts EER Pints Hr CFM SH15M30A 14500 14000 230 20...

Страница 9: ...FPA 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 a...

Страница 10: ...15 amp circuit with time delay fuse required Accommodates direct wiring Long lasting 3 8 10mm thick air filter germicidally treated easily removed for cleaning Friedrich Air Conditioning quality has b...

Страница 11: ...ng 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...

Страница 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...

Страница 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...

Страница 14: ...410A equipment To prevent moisture absorption and lubricant contamination do not leave the refrigeration system open to the atmosphere longer than 1 hour Weigh in the refrigerant charge into the high...

Страница 15: ...failure SealedRefrigerationSystemcontainsrefrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants F...

Страница 16: ...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...

Страница 17: ...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...

Страница 18: ...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...

Страница 19: ...exists mechanically or electrically Single Phase Running and L R A Test NOTE Consult the specification and performance section for running amperage The L R A can also be found on the rating plate Sel...

Страница 20: ...to determine why the compressor failed 19 Recommended procedure for compressor replacement 1 Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actuall...

Страница 21: ...ent The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures result in serious injury or death...

Страница 22: ...ems Allow all items to dry thoroughly before reinstalling them ELECTRONIC ELECTRICAL MECHANICAL Periodically at least yearly or bi yearly inspect all control components electronic electrical and mecha...

Страница 23: ...stem periodically at least 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...

Страница 24: ...AMPS AMPS RUNNING AMPERAGE DRAW AMPS INDOOR TEMPERATURES INDOOR AMBIENT TEMPERATURE F RELATIVE HUMIDITY RH INDOOR COOL HEAT DISCHARGE AIR TEMPERATURE INDOOR F F RETURN AIR TEMPERATURE INDOOR F F OUTD...

Страница 25: ...perative Problem Possible Cause Compressor runs continually Does not cycle off Excessive heat load Test cooling performance of unit Unit undersized Restriction in line Check for partially iced coil Ch...

Страница 26: ...vide proper voltage Switch On Off inoperative Test for continuity Defective capacitor Test with analyzer replace if needed Compressor internal overload open Check voltage at compressor terminals If vo...

Страница 27: ...r blower wheel housing Adjust fan blade or blower wheel clearance Compressor vibrating Check for deteriorated compressor grommets Replace as needed Loose cabinet parts improperly mounted components tu...

Страница 28: ...ELECTROMECHANICAL CONTROL COOL ONLY MODELS SH15M30 A SH20M30 A 27...

Страница 29: ...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 it...

Страница 30: ...ox 1540 San Antonio Texas 78295 1540 4200 N Pan Am Expressway San Antonio Texas 78218 5212 210 357 4400 877 599 5665 x 846 FAX 210 357 4490 Email tac friedrich com www friedrich com Printed in the U S...

Страница 31: ......

Страница 32: ...n 4 10 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 4490 www friedrich com Printed in...

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