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Friedrich R-410A manual

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Table of contents for the manual

  • Page 1

    R-410A Models Service Manual 2010 HG-ServMan (4-10) SH15M30A SH20M30A Cool Only H a z a r d o u s D u t y R o o m A i r C o n d i t i o n e r[...]

  • Page 2

    T able Of Contents Important Safety Information ..................................................................................................................... 2-4 Introduction ................................................................................................................................................... 4 Unit Identicat[...]

  • Page 3

    IMPORT ANT SAFETY INFORMA TION The information contained in this manual is intended for use by a qualied service technician who is familiar with the safety procedures required for installation and repair , and who is equipped with the proper tools and test instruments required to service this product. Installation or repairs made by unqualied[...]

  • Page 4

    Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, • and sleeve on the room side of the air conditioning unit while cleaning. Electrical component malfunction caused by water could result in electric shock or other electrically • unsafe conditions when the power is restored and the u[...]

  • Page 5

    PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS: Read the Installation/Operation Manual for this air conditioning unit prior to operating. • Use air conditioner on a single dedicated circuit within the specied amperage rating. • Connect to a properly grounded outlet only . • Do not remove ground prong of plug. • Do not cut or mod[...]

  • Page 6

    Serial Number Decade Manufactured L=0 C=3 F=6 J=9 A=1 D=4 G=7 B=2 E=5 H=8 A K A R 00001 Production Run Number Y ear Manufactured A=1 D=4 G=7 K=0 B=2 E=5 H=8 C=3 F=6 J=9 Product Line R = RAC Month Manufactured A=Jan D=Apr G=Jul K=Oct B=Feb E=May H=Aug L=Nov C=Mar F=Jun J=Sept M=Dec 1st Digit – Function S = Straight Cool, V alue Series H = HazardGa[...]

  • Page 7

    UL L i st ed f or u s e in Cla s s I, Division 2, G rou ps A, B, C an d D h a z a r do us lo c ati o ns . Ha za r dg ar d is sp eci c al ly d esi gne d to c ool l ivin g q uar te r s, st ora g e a r ea s a nd o t he r en cl osu r es situa t ed in ha za r do u s lo c ations, w he re s p ecic v olati le a m ma bl e l i qu ids o r gas e s a r[...]

  • Page 8

    SPEC IF IC A TIONS AND PERFORMANCE DA T A Coolin g P er forman ce Data EV APORA TOR AIR TEMP . DEG. F CONDENSER TEMPERA TURE DEG. F Discharge T emp Suction T emp Super Heat Sub- Cooling OPERA TING PRESSURES ELECTRICAL RA TINGS R-410A REF . V oltage BREAKER FUSE Discharge Air T emp. Drop F . Suction Discharge Amps Cool Amps Heat Locked Rotor Amps Ch[...]

  • Page 9

    ELECTRICAL D A T A ELECTRICAL REQUIR EME NTS ELECTRIC SHOCK HAZARD W ARNING T urn off electric power before service or installation. All el ec tri ca l conn e cti o ns an d wir in g MUS T be in st al le d by a qu al i ed e l e ct ri c ia n an d con for m to the National Electr ic al Code and all local co des which have jurisdic tion. F ail u r e[...]

  • Page 10

    Permanent Split-Capacitor , totally enclosed fan motor to assure efcient operation even under adverse electrical conditions. Motor has a special stainless steel shaft to resist corrosion and a hermetically sealed overload for arc-free operation. High capacity compressor with internal hermetically sealed overload. Solid-state relay contains trans[...]

  • Page 11

    COMPONENT DEFINITIONS A. Mechanical components B. Electrical components C. Hermetic components Plenum assembly Diffuser with directional louvers used to direct the conditioned airow . Blower wheel Attaches to the indoor side of the fan motor shaft and is used for distributing unconditioned, room side air through the heat exchanger and delivering[...]

  • Page 12

    F AN MOTOR SWITCH, ON-OFF Line side SOLID ST A TE RELA Y Load side LED indicates contacts closed when lit F AN MOTOR 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 pro[...]

  • Page 13

    RANGE: Thermostat (Part No. 618-225-02) 60 ° F ( ± 2 ° ) to 90 ° F( ± 4 ° ) SENSING BULB LOCA TION THERMOST A T A cross ambient thermostat is used to maintain the desired comfort level. The thermostat reacts only to a change in temperature at the bulb location. Important to the successful operation of the unit is the position of the sensing b[...]

  • Page 14

    • R-410A pressure is approximately 60% higher than R-22 pressure. • R-410A cylinders must not be allowed to exceed 125 F , they may leak or rupture. • R-410A must never be pressurized with a mixture of air , it may become ammable. • Servicing equipment and components must be specically designed for use with R-410A and dedicated to pre[...]

  • Page 15

    Proper refrigerant charge is essential to proper unit operation. Operating a unit with an improper refrigerant charge will result in reduced performance (capacity) and/or efciency . Accordingly , the use of proper charging methods during servicing will insure that the unit is functioning as designed and that its compressor will not be damaged. T[...]

  • Page 16

    3. Install a process tube to sealed system. 4. Make necessary repairs to system. 5. Evacuate system to 200 microns or less. 6. Weigh in refrigerant with the proper quantity of R-410A refrigerant. 7. Start unit, and verify performance. 8. Crimp the process tube and solder the end shut. Proper safety procedures must be followed, and proper protective[...]

  • Page 17

    Underchar ged R efrigerant Systems An undercharged system will result in poor performance (low pressures, etc.) in both the heating and cooling cycle. Whenever you service a unit with an undercharge of refrigerant, always suspect a leak. The leak must be repaired before charging the unit. T o check for an undercharged system, turn the unit on, allo[...]

  • Page 18

    R estricted R efrigerant System T roubleshooting a restricted refrigerant system can be difcult. The following procedures are the more common problems and solutions to these problems. There are two types of refrigerant restrictions: Partial restrictions and complete restrictions. A partial restriction allows some of the refrigerant to circulate [...]

  • Page 19

    Lock ed Rotor V olta ge (L.R.V .) T est Locked rotor voltage (L.R.V .) is the actual voltage available at the compressor under a stalled condition. Single Phase Connections Disconnect power from unit. Using a voltmeter , attach one lead of the meter to the run “R” terminal on the compressor and the other lead to the common “C” terminal of t[...]

  • Page 20

    Many compressor failures are caused by the following conditions: 1. Improper air ow over the evaporator . 2. Overcharged refrigerant system causing liquid to be returned to the compressor . 3. Restricted refrigerant system. 4. Lack of lubrication. 5. Liquid refrigerant returning to compressor causing oil to be washed out of bearings. 6. Nonconde[...]

  • Page 21

    3. After all refrigerant has been recovered, disconnect suction and discharge lines from the compressor and remove compressor . Be certain to have both suction and discharge process tubes open to atmosphere. 4. Carefully pour a small amount of oil from the suction stub of the defective compressor into a clean container . 9. Evacuate the system with[...]

  • Page 22

    R OUTINE MAINTENANCE AIR FIL TER Clean the unit air intake lter at least every 300 to 350 hours of operation. Clean the lters with a mild detergent in warm water and allow to dry thoroughly before reinstalling. COILS AND BASE P AN The indoor coil (evaporator coil), the outdoor coil (condenser coil) and base pan should be inspected periodicall[...]

  • Page 23

    R OUTINE MAINTENANCE (Continued) Do not drill holes in the bottom of the drain pan or the underside of the unit. Not following this notice could result in damage to the unit or condensate water leaking inappropriately which could cause water damage to surrounding property . NOTICE Discharge Air Plenum Slot T ab Latches Return air grille Latch Slot [...]

  • Page 24

    ROOM AIR CONDITIONER UNIT PERFORMANCE TEST D A T A SHEET DA TE: _______________ MODEL:_______________ SERIAL:________________ YES NO IS THERE A FRIEDRICH SLEEVE INST ALLED? ____ ____ IS THERE A FRIEDRICH OUTDOOR GRILL INST ALLED? ____ ____ IS MAINTENANCE BEING PERFORMED? ____ ____ If NO is checked use back of sheet for explanation ELECTRICAL: LINE [...]

  • Page 25

    TROUBLESHOO TING Problem Possible Cause Possible Solution Possible Solution Possible Solution Possible Solution 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 co[...]

  • Page 26

    Problem Possible Cause Possible Solution Possible Solution Possible Solution Compressor attempts to start, or runs for short periods only . Cycles on overload. Compressor attempts to start before system pressures are equalized. Allow a minimum of 3 minutes to allow pressures to equalize before attempting to start. Low or fluctuating voltage. Check[...]

  • Page 27

    Problem Possible Cause Possible Solution Possible Solution Possible Solution Possible Solution Fan motor does not run. Defective switch (On-Off) Check continuity across terminals 2 and 3. Fan capacitor open. T est with capacitor analyzer . Replace if bad. Inoperative fan motor . Check power and if okay , perform continuity test. Replace if bad. Inc[...]

  • Page 28

    ELECTR OMECHANICAL CONTR OL COOL ONL Y MODELS: SH15M30-A SH20M30-A 27[...]

  • Page 29

    Friedrich Air Conditioning Company P .O. Box 1540 San Antonio, TX 78295 210.357.4400 www .friedrich.com HAZARDGARD ® ROOM AIR CONDITIONERS LIMITED W ARRANTY LIMITED ONE YEAR P ARTS W ARRANTY 1. Limited warranty – One year . Friedrich warrants that it will provide a replacement for any part of this HazardGard Room Air Conditioner found defective [...]

  • Page 30

    FRIEDRICH AIR CONDITIONING CO . Post Ofce Box 1540 · San Antonio, T exas 78295-1540 4200 N. Pan Am Expressway · San Antonio, T exas 78218-5212 (210) 357-4400 · 877-599-5665 x 846 · F AX (210) 357-4490 Email: tac@friedrich.com www .friedrich.com Printed in the U.S.A. TECHNICAL SUPPORT CONT ACT INFORMA TION 29[...]

  • Page 31

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  • Page 32

    HG-ServMan (4-10) FRIEDRICH AIR CONDITIONING CO . Post Ofce Box 1540 · San Antonio, T exas 78295-1540 4200 N. Pan Am Expressway · San Antonio, T exas 78218-5212 (210) 357-4400 · F AX (210) 357-4490 www .friedrich.com Printed in the U.S.A.[...]