Friedrich 60 Hz Air Conditioner User Manual
Contents
1. apis 3ANISION LENE ZH9H 09 65 9 1291179917 Ayoede9 SI POIN ZH 09 asnd d yvadd 59915539 ONLLVHIdO HASNIGNO9 493A 1 HOLVHOdVA3 HOLVHOdVA3 1V01419113 sduy sduy ZO ul 1009 4 1010 5 ul 2 09 mio 254240 e a 1 dual 4 930 ua dul ed 1001 qns pinbi7 uonons abreyosig dal eq COMPONENT OPERATION AND TESTING 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 All compressors are internally spring mounted and externally mounted on rubber isolators Line Voltage Overload The compressor is equipped with an internal line voltage over load This overload is embedded in the windings of the motor to sense the motor temperature The overload will open and disconnect the power to the motor due to high temperatures caused by 1 A locked rotor 2 Excessive running amps 3 High discharge temperature 4 Low refrigerant charge FIGURE 1 INTERNAL OVERLOAD LINE BREAK2. CAPACITOR COMPRESSOR TERMINAL ADAPTER FAN MOTOR GROUND LEAD OVERLOAD PROTECTOR e COMBINATION TERMINAL SYSTEM SWITCH INDOOR THERMOSTAT HAZARDGARD CHASSIS PARTS HAZARDGARD PARTS LIST DESCRIPTION PART NO MODELS ELECTRICAL PARTS SH15L30 B SH20L30 B COMPRESSOR 61193549 COMPRESSOR 61193550 MOTOR FAN 61871426 MOTOR FAN 61871427 SWITCH ON OFF DPST 60935300 INSULATOR ELECTRICAL 61829700 RELAY SOLID STATE 61108800 THERMOSTAT 61822502 CAPACITOR 20 7 5 440 V 61080546 CAPACITOR 25 7 5 440V 61080547 HARNESS WIRE COMP 61821308 REFR GERATION PARTS SH15L30 B SH20L30 B EVAPORATOR COIL 61850100 EVAPORATOR COIL 61850001 CONDENSER COIL 62050410 CONDENSER COIL 62050411 DRIER LIQUID 60308101 CAPILLARY TUBE 01390005 CAPILLARY TUBE 03760518 VALVE BY PASS 60809500 14 HAZARDGARD PARTS LIST DESCRIPTION PART NO MODELS CHASSIS PARTS HOLDER THERMOSTAT 61829800 KNOB CONTROL 61493915 DECORATIVE PANEL 61822662 FAN BLADE COND 60542003 FAN BLADE COND 60542004 BLOWER WHEEL EVAP 60610616 BLOWER WHEEL EVAP 60610617 FAN MOTOR MOUNT 61802500 FAN MOTOR MOUNT 61804100 SHROUD CONDENSER 61803601 SHROUD CONDENSER 61804901 BRACE COND SHROUD 61802600 BLOWER FRONT 61817300 BLOWER FRONT 61817400 SCROLL 61814905 SCROLL 61817505 BASE PAN 61803444 BOLT COMP MOUNT 9140
3. INTERNAL OVERLOAD OHMMETER COMPRESSOR WINDING TEST Figure 2 Remove the compressor terminal box cover and disconnect the wires from the terminals Using an ohmmeter check continuity across the following FIGURE 2 COMPRESSOR WINDING TEST Testing Procedures 1 Terminal and 5 no continuity open winding replace compressor 2 Terminal R no continuity open winding replace compressor 3 Terminal and S no continuity open winding replace compressor 4 Terminal and the shell of the compressor continuity grounded motor replace compressor 5 Should continuity exist between terminals R and S but not between terminals and S and and R the internal overload may be open If the compressor is extremely hot allow it sufficient time to cool It may require as long as one hour for the compressor to cool sufficiently for the internal overload to close GROUND TEST Use an ohmmeter set on its highest scale Touch one lead to the compressor body clean point of contact as a good connec tion is a must and the other probe in turn to each compressor terminal See Figure 3 Ifa reading is obtained the compressor is grounded and must be replaced FIGURE 3 TYPICAL GROUND TEST CHECKING COMPRESSOR EFFICIENCY The reason for compressor inefficiency is normally due to bro ken or damaged suction and or discharge valves reducing t
4. lt A 28 a Load side 2 FIGURE 5 SOLID STATE RELAY LED indicates contacts closed when lit SYSTEM CONTROL SWITCH Figure 6 This switch is double pole single throw Check for continuity between terminals 2 and 3 and 5 and 6 FIGURE 6 SWITCH ON OFF CAPACITOR 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 capacitor s primary function is to reduce the line current while greatly improving the torque characteristics of a motor The capacitor also reduces the line current to the motor by improving the power factor of the load The line side of the capacitor is marked with a red dot and is wired to the line side of the circuit see Figure 7 FIGURE 7 RUN CAPACITOR HOOK UP COMPRESSOR RUN CAPACITOR CAPACITOR TEST 1 Remove the capacitor from the unit 2 Check for visual damage such as bulges cracks or leaks 3 For dual rated capacitors apply an ohmmeter lead to the common C terminal and the other probe to the compressor HERM terminal A satisfactory capacitor will cause a deflection on the pointer then gradually move back to infinity 4 Reverse the leads of the probe and momentarily touch the capacitor terminals The deflection of the pointer should be two
5. 0400 PLENUM ASSEMBLY 61831006 OUTER SHELL 61825708 OUTER SHELL 61825709 GRILLE INTAKE 61808906 GRILLE INTAKE 61811111 WINGBOARD 60294415 WINGBOARD 60294420 ANGLE WINGBOARD TOP 61819711 ANGLE WINGBORD SIDE 61819811 LATCH INTAKE GRILLE 61989000 FILTER AIR 60865808 FILTER AIR 60865809 HOLDER FILTER 61823000 DRAIN PAN EVAP 61803800 GROMMET COMP MOUNT 01193549 REAR GRILLE 61818500 REAR GRILLE 61818501 BAG ASSY HARDWARE 60846016 GASKET CHASSIS 61717301 SH15L30 B SH20L30 B OPTIONAL ACCESSORY ITEMS DRAIN KIT DC 2 01900235 START KIT CAPARELAY 01900312 15 rriedrich Friedrich Air Conditioning Company P O Box 1540 San Antonio TX 78295 210 357 4400 www friedrich com HAZARDGARD ROOM AIR CONDITIONERS LIMITED WARRANTY LIMITED ONE YEAR PARTS WARRANTY 1 Limited warranty One year Friedrich warrants that it will provide a replacement for any part of this HazardGard Room Air Conditioner found defective in material or workmanship for a period of one 1 year from the date of original purchase 2 Limited warranty One year The Friedrich warranty also covers the cost of labor for repairing any compressor condenser evaporator or inter connecting tubing found defective within the warranty period providing the unit is returned to an authorized Frie
6. OLS ONLY SLIGHTLY TROUBLESHOOTING Continued POSSIBLE CAUSE Compressor attempts to start before system pressures are equalized TO CORRECT Allow a minimum of two 2 minutes to allow pressures to equalize before attempting to start Low or fluctuating voltage Check voltage with unit operating Check for other appliances on the circuit Unit should be on separate circuit for proper voltage and be fused separately Incorrect wiring Connect per wiring diagram Shorted or incorrect capacitor Check by substituting a known good capacitor of correct rating Restricted or low air flow through condenser coil Check for proper fan speed or blocked condenser Compressor running abnormally hot Check for kinked discharge line or restricted condenser Check amperage Overload opens too soon Thermostat contacts not closing Change compressor if all other corrections above are normal Check continuity of thermostat at coldest setting Jump contacts if compressor runs replace thermostat Low voltage supply Check for nameplate voltage Switch On Off inoperative Test for continuity Open capacitor Check by substituting a known good capacitor of correct rating Internal overload open Check voltage at compressor terminals If voltage is satisfactory replace compressor Relay open Replace relay Open or shorted compressor windings Thermosta
7. al across coil Touch test coil return bends for same temperature Test for low running current Inoperative fan motor Excessive heat load Test and replace if inoperative 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 Loss of charge in thermostat bulb Check operation of thermostat Replace if contacts remain closed Place jumper across thermostat terminals If unit operates replace thermostat Loose or broken parts in thermostat Incorrect wiring Check as above Connect per wiring diagram System switch open Thermostat set at coldest point Test for continuity at switch terminals 2 and 3 Turn to highest temperature setting to see of unit will cycle off 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 PROBLEM COMPRESSOR ATTEMPTS TO START OR RUNS FOR SHORT PERIODS ONLY CYCLES ON OVERLOAD COMPRESSOR DOES NOT START FAN MOTOR RUNS DOES NOT COOL OR CO
8. arge gas only into the low side The introduction of liquid into the low side without the use of a capillary tube will cause damage to the discharge valve of the rotary compressor NOTE All inoperative compressors returned to Friedrich must have all lines properly plugged with the plugs from the replacement compressor PROBLEM UNIT DOES NOT RUN EVAPORATOR COIL FREEZES UP COMPRESSOR RUNS CONTINUALLY DOES NOT CYCLE OFF THERMOSTAT DOES NOT TURN UNIT ON THERMOSTAT DOES NOT TURN UNIT OFF TROUBLESHOOTING POSSIBLE CAUSE Power disconnected TO CORRECT Check power source System switch in Off position Set switch correctly 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 Inoperative system switch Test for continuity Loose or disconnected wiring at switch Check wiring and connections Connect per wiring diagram Inoperative switch On Off Dirty Filter Test for continuity 3 and 2 5 and 6 Clean as recommended in Owner s Manual Restricted air flow 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 differenti
9. ce Scales 1 2 oz accuracy b Charging Board 1 2 oz accuracy 9 High Pressure Gauge 0 400 Ibs 10 Low Pressure Gauge 30 150 Ibs 11 Vacuum Gauge 0 1000 microns Equipment Must Be Capable of 1 Recovering CFC s as low 5 2 Evacuation from both the high side and low side of the system simultaneously 3 Introducing refrigerant charge into the high side of the system 4 Accurately weighing the refrigerant charge actually intro duced into the system 5 Facilities for flowing nitrogen through the refrigeration tubing during all brazing processes HERMETIC COMPONENT REPLACEMENT The following procedure applies when replacing components in the sealed refrigeration circuit or repairing refrigerant leaks Compressor condenser evaporator capillary tube refrigerant leaks etc 1 Recover the refrigerant from the system at the process tube located on the high side of the system by installing a line tap on the process tube Apply the gauge from the process tube to EPA approved gauges from the process tube to the EPA approved recovery system Recover the CFC s in the system to at least 5 2 Cutthe process tube below the pinch off in the suction side of the compressor 3 Connect the line from the nitrogen tank to the suction process tube 4 Drift dry nitrogen through the system and unsolder the more distant connection first Filter drier high side process tube etc 5 Replace the in
10. drich Repair Station located within the Continental United States The Friedrich warranty does not cover 1 Any charges for removal transportation or reinstallation of the unit 2 the cost of labor to replace parts other than those described above and 3 does not apply to any HazardGard 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 its performance and reliability or c any repairs or servicing as a result of using parts not sold or approved by Friedrich LIMITATIONS This warranty is a LIMITED warranty Anything in the warranty notwithstanding IMPLIED WARRANTIES FOR PARTICULAR PURPOSE AND MERCHANTABILITY SHALL BE LIMITED TO THE DURATION OF THE EXPRESS WARRANTY MANUFACTURER EXPRESSLY DISCLAIMS AND EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR BREACH OF ANY EXPRESSED OR IMPLIED WARRANTY 10 04 rriedrich 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 Printed in the U S A HG SVC PRTS 07 3 07
11. he ability of the compressor to pump refrigerant gas This condition can be checked as follows 1 Install a piercing valve on the suction and discharge or liquid process tube 2 Attach gages to the high and low sides of the system 3 Start the system Run a cooling or heating performance test If test shows A Below normal high side pressure B Above normal low side pressure C Low temperature difference across the coil The compressor valves are faulty replace the compressor FAN 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 volt age overload located internally of the motor The motor shaft is stainless steel to resist corrosion FIGURE 4 FAN MOTOR FAN MOTOR TEST Disconnect power to the unit 1 Determine that the capacitor is serviceable 2 Disconnect the black lead from the circuit board 3 Apply live test cord leads to the common terminal of the capacitor and the black lead The motor should run at high speed SOLID STATE RELAY Figure 5 Two 50 amp rated 208 230 volt solid state relays are used to energize the compressor and fan motor Terminals 3 and 4 are the 208 230 volt line side Terminals 1 and 2 are load side contacts ge Line side gt ger
12. ii 11 Gabinet Parts Diagram a lr ee e ee la ce es 12 ChassisPartsDiagram a A 13 Paris Mi dans 14 15 A O 16 0981 540049 Z NOISIAIO I 519 404 ONILVY FUNLVYACWL 0 1 4021 SI aumpeyad ua Juelquee 100 WNWIXYI 860 229 149164 ALIN quo 90 89 530109124 S n 861 4009 JUNWYAdNAL 198140 93101 asueyo 0 Joalqns 510189112905 A3ojouyas pue 31199919 Sumunuos and 6 1 991 WSL 9 81 Zv 18 916 91 9 9 6 Je le 9 98 Ye 21 0E102HS ZSL WSL Me 9 9 91 42 8 18 916 91 o 6 9 6 LZ MSZ 96 91 O 1S1HS Buiddiys sduy SHOA eN um ap s no wooy PIM 5 9 3 0 yujdeq UNUN O UOISU9JXI y daa 8504 1 841 10 9 peysiuly 1 YAPIM MOPUIM suo suswig 28 0 6 0 6 1913 0033 6 01 0 01 80 062 00961 00861 0E10SHS 58 98 9941 9941 18 62 803 0 3 000S1 000S1 Of ISLHS 83 433 SHEM SHOA 4H NLa sduy
13. ion Fan blade striking chassis Adjust motor mount to attain proper fan blade and blower wheel clearance Compressor vibrating Loose cabinet parts improperly mounted components tubing rubbing Evaporator drain pan overflowing Check for deteriorated compressor grommets or missing mounting parts Adjust and tighten as required Clean obstructed drain trough Condensation forming on bottom of base pan Evaporator drain pan broken or cracked Reseal or replace Water dripping from discharge air grilles Evaporator drain pan cracked or obstructed Dirty evaporator coil or extremely high humidity conditions Clean coil with steam or detergent Repair and clean or replace as required Water in center section of base pan compressor area Remove condenser shroud Clean and remove old sealer from base pan and shroud Apply new sealer reinstall and check Dirty Condenser coil Clean with steam or detergent Fan blade and slinger ring improperly positioned Adjust fan blade to 1 2 clearance from condenser coil WIRING DIAGRAM MODELS SH15L30 B and SH20L30 B WIRING DIAGRAM COMPRESSOR CAPACITOR gt 3 LQ Es SYSTEM SWITCH TOGGLE COMPRESSOR BLACK HARNESS BEE BLACK WHITE TO_ GROUNDING SCREW GREEN I TO CHASSIS TO CONTROL ASY GROUNDING SCREW SYSTEM TOGGLE SWITCH SOLID STATE RELAY
14. operative component and always install a new filter drier Drift dry nitrogen through the system when making these connections 6 Pressurize the system to 30 PSIG with proper refrigerant and boost the refrigerant pressure to 150 PSIG with dry nitrogen 7 Leak test the complete system with the electric halogen leak detector correcting any leaks found 8 Reduce the system to zero gauge pressure 9 Connect the vacuum pump to the high side and low side of the system with deep vacuum hoses or copper tubing Do not use regular hoses 10 Evacuate the system to an absolute holding pressure of 200 microns or less NOTE This procedure can be sped 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 inthe system a minimum of 10 minutes Recover refrigerant and proceed with evacuation to a pressure of 200 microns or a minimum of 10 11 Break the vacuum by charging the system from the high side with the correct amount of refrigerant specified This will prevent boiling the oil out of the crankcase NOTE If the entire charge will not enter the high side allow the remainder to enter the low side in small increments while operating the unit 12 Restart the unit several times after allowing pressures to stabilize Pinch off the process tubes cut and solder the ends Remove the pinch off tool and leak check the process tube end
15. rriedrich 2007 Service amp Parts Manual mazardgard Room Air Conditioners 60 Hz Models SH15L30 B SH20L30 B TABLE OF CONTENTS hea ec nln aia de ee ee ni eee ree 3 Data alan ls kn ne 3 Component Operation amp Testing tact din le hehe al li 4 era a klar an ii ea ka an n sal lala 4 Thermal Overload m eee 4 Checking Compressor Efficiency 11 eee 4 5 Solid States Relay ss aaas 5 a da 5 Een 5 alta 5 Low Ambient Bypass leticia ida 6 Sealed Refrigeration SystemRepairs m m m gt e gt e gt e e gt m gt em gt Zmmm mm m m na 6 HermeticComponentReplacemeni ne 7 Special Procedure in the case of Compressor Motor Bum O t AM gt m gt gt gt gt gt 7 7 Rotary Compressor Special Troubleshooting amp Service em mem 7 Refrigerant Charge BE e a A A A eee 7 Troubleshooting lt lt aa nee 8 10 VINO Dagi al lal ie ri ill
16. s SPECIAL PROCEDURES IN THE CASE OF COMPRESSOR MOTOR BURNOUT 1 Recover all refrigerant and oil from the system 2 Remove the compressor capillary tube and filter drier from the system 3 Flush the evaporator condenser and all connecting tubing with dry nitrogen or equivalent to remove all contamination from the system Inspect the suction and discharge lines for carbon deposits Remove and clean if necessary 4 Reassemble the system including a new drier strainer and capillary tube 5 Proceed with processing as outlined under hermetic component replacement ROTARY COMPRESSOR SPECIAL TROUBLESHOOTING amp SERVICE Basically troubleshooting and servicing rotary compressors is the same as on the reciprocating compressor with only a few exceptions 1 Because of the spinning motion of the rotary the mounts are critical If vibration is present check the mounts carefully 2 The electrical terminals on the rotary are in a different order than the reciprocating compressors The terminal markings are on the cover gasket Use your wiring diagram to insure the correct connections 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 introduce liquid refrigerant into the high side of the system with the unit off Then start the compressor and enter the balance of the ch
17. t open or inoperative Check windings for continuity and resistance Direct test compressor If direct test fails replace compressor Set to coldest position Test thermostat and replace if necessary Dirty air filter Dirty or plugged condenser or evaporator coil Clean as recommended in Owner s Manual Use steam or detergents to clean Poor air circulation in area being cooled Adjust air louvers Low capacity undercharge Compressor not pumping properly Clean check for leak and make repair Check amperage draw against nameplate If not conclusive make pressure test PROBLEM FAN MOTOR DOES NOT RUN SWITCH ON OFF DOES NOT CUT FAN MOTOR OFF NOISY AND OR VIBRATION WATER LEAKS INTO ROOM OUTSIDE WATER LEAKS TROUBLESHOOTING Continued POSSIBLE CAUSE Defective switch On Off TO CORRECT Check continuity across terminals 2 and 3 Fan capacitor open Check by substituting a known good capacitor of the same rating Inoperative fan motor Direct test fan motor Incorrect wiring of fan circuit Connect per wiring diagram Relay open Replace Relay Check for seized motor bearings Bound fan blade or blower wheel Selector Switch Relay Poor installation Rotate by hand add oil if noisy replace Adjust for proper clearance Replace selector switch Replace relay Refer to Installation Instructions for proper installat
18. times that of the first check if the capacitor is good 5 Repeat steps 3 and 4 to check the fan motor capacitor NOTE A shorted capacitor will indicate a low resistance and the pointer will move more to the 0 end of the scale and remain there as long as the probes are connected An open capacitor will show no movement of the pointer when placed across the terminals of the capacitor THERMOSTAT 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 bulb in relation to the evaporator see Figure 8 FIGURE 8 SENSING BULB LOCATION RANGE Thermostat Part No 618 225 02 60 F 2 to 90 F 4 TEST Remove the wires from the thermostat Turn the thermostat to its coldest position Check to see if there is continuity between the two terminals Turn the thermostat to its warmest position Check continuity to see if the thermostat contacts open 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 LOW AMBIENT BYPASS VALVE Figure 9 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
19. valve is connected between the discharge line at the compressor and the suction process tube The valve responds to suction pressure which when reduced in the system causes the 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 increasing the suction pressure The valve is preset to open when the suction pressure reaches 50 psig This pressure setting cannot be altered The system can be operated at outdoor temperatures as low as 45 F before the evaporator coil will begin to accumulate frost To determine if the valve operates block the return air to the evaporator coil Turn on the unit and touch the tube at the bypass valve outlet which connects to the suction process tube When the low side pressure reaches approximately 50 psig the valve will begin to open and the tube will get hot This method will determine if the valve is responding to the suction pressure change FIGURE 9 LOW AMBIENT Bypass VALVE a 608 095 00 SEALED REFRIGERATION SYSTEM REPAIRS Equipment Required 1 Voltmeter Ammeter Ohmmeter 2 3 4 E P A Approved Refrigerant Recovery System 5 Vacuum Pump capable of 200 microns or less vacuum 6 Acetylene Welder 7 Electronic Halogen Leak Detector Type H 6 or equivalent 8 Accurate refrigerant charge measuring device such as a Balan
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