Friedrich SV12 User's Manual
Contents
1. Remove the control box Refer to section 2 1 3 Remove the upper air guide Refer to section 2 2 1 Remove the 2 screws which fasten the evaporator to the lower air guide Carefully move the evaporator sideways Refer to section 2 2 1 After discharging the refrigerant completely unbraze the interconnecting tube at the evaporator connections Remove the evaporator Re install the components by referring to notes on page 10 See Figure 17 Figure 15 Figure 16 Figure 17 2 4 3 CAPILLARY TUBE 1 Remove the cabinet Refer to section 2 1 2 2 After discharging the refrigerant completely unbraze the interconnecting tube at the capillary tube see caution on previous page NOTES Replacement of the refrigerant 1 When replacing the refrigerant be sure to Discharge the refrigerant system using a Freon recovery System If there is no valve to attach the recovery system to install one such as a WATCO A 1 before venting the Leave the valve in place after servicing the system After discharging the unit completely remove the desired component and unbraze the pinch off tubes Solder service valves into the pinch off tube ports leaving the valves open Solder the pinch off tubes with Service valves Evacuate as follows 1 Connect the vacuum pump as illustrated figure 18A on page 11 2 Start the vac2. vs 5 Service Parts N Non Service Parts LOCATION DESCRIPTION ST NO SV08A10A PER SET MARKS 1 CORD 67300005 1 S 2 ROTARY SWITCH 67300501 1 S 3 MOTOR 67303014 1 S 4 CAPACITOR 67300712 1 S 5 THERMOSTAT 67300403 1 S 6 COMPRESSOR 67301612 1 S 6 EXPLODED VIEW 654030 Cou e sg EMEN 23 7 REPLACEMENT PARTS LIST MODEL SV08A10A SV10A10A SV12A10A LOCATION P No No PEC ETON SV08A10A SV10A10A SV12A10A 130410 BASE ASSEMBLY SINGLE 67302911 67302910 R 130910 CABINET ASSEMBLY SINGLE 67303706 R 135303 GRILLE INLET 67306105 R 135312 GRILLE ASSEMBLY FRONT 67306007 R 147581 VANE HORIZONTAL 67306204 R 147582 VANE VERTICAL 67306254 67306255 R 148000 BRACE 67303904 R 149410 KNOB ASSEMBLY 67304104 R 149980 SHROUD ASSEMBLY 67303109 R 152312 FILTER ASSEMBLY 67304305 R 264110 POWER CORD ASSEMBLY 67300005 67300006 67300007 R 266003 SWITCH ROTARY 67300501 R 269310 THERMOSTAT ASSEMB
3. Room Air Conditioner Service and Parts Manual Slider Casement 115Volts 9 08 10 SV10A10A SV12A10A 5 08 SV10 SV12 01 05 1 CONTENTS PREFACE 1 1 SAFETY PRECAUTIONS va 2 1 2 INSULATION RESISTANCE TEST 2 1 3 SPECIFICATIONS asi oe dip 3 1 4 FEATURES dq NR 4 1 5 CONTROL LOCATIONS 4 DISASSEMBLY INSTRUCTIONS 2 1 MECHANICAL 5 2 1 1 FRONT GRILLE ct 5 2332 CABINE Papinu 5 2 1 3 CONTROL BOX tubi 5 2 2 AIR HANDLING 6 2 2 1 AIR GUIDE AND TURBO FAN 6 2 2 FAN etaed 6 2 2 3 SHROUD sade ua 7 2 3 ELECTRICAL PARTS 7 2 3 1 OVERLOAD PROTECTOR 7 232 COMPRESSOR uas 7 2 3 3 CAPACITOR Madame 8 2 3 4 POWER CORD c enia 8 2 3 5 THERMOSTAT ductos Seu et 8 2 3 6 ROTARY SWITCH sse 8 2 3 MOTORS 9 1 PREFACE This SERVICE MANUAL provides various service information including the mechanical and electrical parts etc This room air conditioner was manufactured and assembled under a strict quality control system The refrigerant is charged at the factory Be sure to read the safety precautions prior to servicing the unit 1
4. 5 Remove the 3 nuts and the 3 washers which fasten the compressor to the base pan 6 Remove the compressor See Figure 10 7 Re install the components by referring to the removal procedure above AD WS ool Figure 9 Figure 10 2 3 3 CAPACITOR 1 Remove the cabinet Refer to section 2 1 2 2 Remove the screw and the clamp which fasten the capacitor 3 Disconnect all the leads of capacitor terminals 4 Re install the components by referring to the removal procedure above See Figure 11 2 3 4 POWER CORD 1 Remove the cabinet Refer to section 2 1 2 2 Disconnect the grounding screw from the control box 3 Disconnect the 2 receptacles 4 Remove a screw which fastens the cord clip See Figure 12 5 Remove the power cord 6 Re install the component by referring to the removal procedure above Use only one ground marked hole for ground connection 7 If the supply cord of this appliance is damaged it must be replaced by the same cord that can be obtained from an authorized parts dealer 2 3 5 THERMOSTAT 1 Remove the cabinet Refer to section 2 1 2 2 Remove the 2 screws which fasten the thermostat 3 Disconnect 2 leads of thermostat terminals 4 Remove the thermostat 5 Re install the components by referring to the above removal procedure See Figure 13 2 3 6 ROTARY SWITCH 1 Remove the cabinet Refer to sectio
5. Pay attention to any change from high speed to low speed If the speed does not change replace the motor Fan motor noise Fan If cracked out of balance or partially missing replace it Blower If cracked out of balance or partially missing replace it Loose clamper Tighten it Worn bearings If knocking sounds continue when running or loose replace the motor If the motor hums or noise appears to be internal while running replace motor Compressor will not run but fan motor runs Voltage Check voltage If not within limits call an electrician Wiring Check the wire connections if loose repair or replace the terminal If wires are off refer to wiring diagram for identification and replace Check wire locations If not per wiring diagram correct Rotary Check for continuity refer to the wiring diagram for terminal identification Replace the switch if circuit is open 19 COMPLAINT CAUSE REMEDY Compressor will not run but fan motor runs Thermostat Check the position of knob If not at the coldest setting advance the knob to this setting and restart unit Check continuity of the thermostat Replace thermostat if circuit is open Capacitor Discharge capacitor before servicing Check the capacitor Replace if not within 10 of manufacturers rating Replace if shorted open or damaged Compressor Check the comp
6. of window opening from top of bracket assembly as shown Fig 26 Subtract 20 3 4 Mark this measurement on curtain and cut the curtain See Figure 26 14 Bolt Bracket Support Bracket Figure 22 Window Window Track Figure 23 about 1 4 Figure 24 Fastening Side Guides 2 Side Guide Figure 25 V lt S S We Figure 26 8 Slide curtain into curtain frame Slide curtain frame assembly into side guides of the air conditioner cabinet Make sure curtain is firmly enclosed on all sides by the frame See Figure 27 c Cut side guide seal into 2 equal lengths Remove protective backing and apply it to the rear side of cabinet side guides starting just below curtain frame assembly Pinch off excess length so seal is even with the bottom of side guide See Figure 28 10 Place air conditioner in window opening It should sit on bracket assembly so that curtain frame and cabinet side guides are against top and side window jambs Mate front of bracket with base guide attached to the bottom of base pan 11 Drill 1 8 inch holes in window track through the existing holes on base guide Screw 4 type C screws through the holes See Figure 29 12 If this is a casement window installation proceed to casement window installation If not slide inner window sash firmly against side of the cabinet 13 Drill 1 8 inc
7. 1 SAFETY PRECAUTIONS 1 When servicing the unit set the ROTARY SWITCH or POWER SWITCH to OFF and unplug the power cord Observe the original wire insulation If a short circuit is found replace all parts which have been overheated or damaged by the short circuit After servicing the unit make an insulation resis tance test to protect the customer from being exposed to shock hazards 24 REFRIGERATION CYCLE 9 2 4 1 CONDENSERB 9 2 4 2 EVAPORATOR 9 2 4 3 CAPILLARY TUBE a eet 10 3 INSTALLATION 3 1 HOW TO INSTALL THE 12 3 2 CHECKING INSTALLATION 12 2 12 3 4 WINDOW REQUIREMENTS 13 3 5 INSTALLATION KITS CONTENTS 13 3 6 HORIZONTAL SLIDING WINDOW INSTALLATION 14 3 7 CASEMENT WINDOW INSTALLATION 15 4 TROUBLESHOOTING GUIDE 4 1 OUTSIDE 16 4 2 PIPING SYSTEM toten 16 4 3 TROUBLESHOOTING GUIDE 17 5 SCHEMATIC DIAGRAM 5 1 CIRCUIT DIAGRAM 21 5 2 CIRCUIT DIAGRAM ern 22 6 EXPLODED VIEW 23 7 REPLACEMENT PARTS LIST 24 1 2 INSULATION RESISTANCE TEST 1 Unplug the power cord and connect a jumper between 2 pins black and white 2 The groundin
8. 3 Reinstall the air filter 4 Close the inlet grille Inlet Grille 2 DISASSEMBLY INSTRUCTIONS Before the following disassembly set POWER SWITCH to OFF and disconnect the power cord 2 1 MECHANICAL PARTS 2 1 1 FRONT GRILLE 1 Open the inlet grille downward and remove the air filter 2 Remove the screws which fasten the front grille See Figure 1 3 Pull the front grille from the right side Remove the front grille There 4 hooks 5 Re install the components by referring to the removal procedure above A 2 1 2 CABINET 1 After disassembling the FRONT GRILLE remove the 6 screws which fasten the cabinet at both sides See Figure 2 2 Remove the 4 screws which fasten the cabinet at back 3 Remove the cabinet 4 Re install the components by referring to the removal procedure above Inlet Grille Figure 1 2 1 3 CONTROL BOX 1 Remove the front grille Refer to section 2 1 1 2 Remove the cabinet Refer to section 2 1 2 3 Remove the 1 screw which fasten the power cord See Figure 3 4 Disconnect the grounding screw from the evaporator channel Figure 2 5 Remove the 2 screws which fasten the control box See Figure 3 6 Remove the housing which connects motor wire in the control box 7 Remove three leads which connect compressor 8 Discharge the capacitor by placing a 20 000 ohm resistor across the capacitor terminals 9 Raise the control box up
9. 41 x 201 2 x 233 5 W x Hx D mm 368 x 521 x 607 DB Dry Bulb WB Wet Bulb 1 4 FEATURES Designed for COOLING ONLY Built in adjustable THERMOSTAT Powerful and whispering cooling Washable one touch filter Simple installation and service Compact size Low air intake top cooled air discharge Reliable and efficient rotary compressor is equipped 1 5 CONTROL LOCATIONS 1 5 1 COOLING ONLY MODEL e VENTILATION The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions When fresh air is necessary in the room set the ventilation lever OPEN position The damper is opened and room air is exhausted CLOSE siis VENT di OPEN TEMPERATURE Thermostat will automatically control the temperature of the room Select a higher grade for a cooler temperature in the room The temperature is selected by moving the knob to the desired position MODE OFF Turns air conditioner off MED Med speed fan operation without cooling LOW Low speed fan operation without cooling cob Cooling with high speed fan operation Warmer Cooler MED Cooling with med speed fan operation Low Goo LOW Cooling with low speed fan operation NOTE Before using the air conditioner secure the front grille with two screws enclosed with the owner s manual 1 Open the inlet grille downward and remove the air filter 2 Fasten the front grille with screws
10. A Pulling Vacuum Figure 18B Charging 11 3 INSTALLATION 3 1 HOW TO INSTALL THE UNIT avoid vibration and noise make sure the unit is installed securely and firmly Install the unit where the sunlight does not shine directly on the unit If the unit receives direct sunlight build an awning to shade the cabinet There should be no obstacle like a fence within 20 which might restrict heat radiation from the condenser To prevent reducing performance install the unit so that louvers of the cabinet are not blocked Install the unit with a slight downward slope towards the outside about 1 4 to ensure that all condensate drains outside Install the unit with its bottom portion 30 60 above the interior floor level Stuff the foam gasket between the top of the unit and the wall to prevent air and insects from getting into the room The power cord must be connected to an independent circuit The green wire must be grounded Connect the drain tube to the base pan hole in the rear side if you need to run a drain hose consult a dealer Plastic hose or equivalent may be connected to the drain tube 3 2 CHECKING INSTALLATION The setting conditions must be checked prior to initial start up The items mentioned below are important check points to review when the installation is complete 1 A grounding wire Green or Green and Yellow is provided
11. LY 67300403 R 346811 MOTOR ASSEMBLY SINGLE 67303014 67303015 R 349001 DAMPER 67303505 R 349480 ORIFICE 67303407 R 349600 MOUNT MOTOR 67303608 R 352380 AIR GUIDE LOWER ASSEMBLY 67302715 R 352390 AIR GUIDE ASSEMBLY UPPER 67302714 R 354210 EVAPORATOR ASSEMBLY 67302411 67302412 R 359011 FAN ASSEMBLY AXIAL 67303206 R 359012 FAN ASSEMBLY TURBO 67302610 R 550140 ISOLATOR COMP 67301900 R 552111 TUBE ASSEMBLY CAPILLARY 67302108 67302109 67302110 R 554030 CONDENSER ASSEMBLY 67303310 67303311 R 554160 COMPRESSOR 67301612 67301614 67301615 R 567502 OLP 67301410 67301409 67301407 R WOCZZ CAPACITOR DRAWING 67300712 67300709 67300713 R 731273 INSTALLATION KIT 67306306 237900 WINDOW DISPLAY 67308101 R 132100 FRAME PANEL 67308100 R 749740 1 GUIDE UPPER 67304004 R 749740 2 GUIDE FRAME 67306402 R W4810 1 BRACKET 67303905 R W4810 SUPPORT BRACKET 67303906 24 MEMO 25 MEMO 26 Use Factory Certified Parts FRIEDRICH AIR CONDITIONING CO Visit our web site at www friedrich com Post Office Box 1540 4200 Pan Am Expressway San Antonio Texas 78295 1540 210 357 4400 FAX 210 357 4480 P NO 3828A20190X Printed in the U S A SV08 SV10 SV12 01 05
12. area to be cooled Excessive noise Blower or fan Check the set screw or clamp If loose or missing correct If the blower or fan is hitting the air guide rearrange the air handling parts Copper tubing Remove the cabinet carefully and rearrange tubing so that it doesn t contact the cabinet compressor shroud and barrier 20 5 SCHEMATIC DIAGRAM 5 1 CIRCUIT DIAGRAM MODEL SV10A10A SV1210A POWER INPUT BK BR WH BL Plain Ribbed E M ROTARY SWITCH GN GN YL CAPACITOR OR BR BK BK 4 RD THERMOSTAT 5 Service Parts N Non Service Parts PART NO LOCATION DESCRIPTION NO SV10A10A SV12A10A PER SET MARKS 1 POWER CORD 4 1 5 2 ROTARY SWITCH 67300501 1 5 3 FAN MOTOR 67303015 1 S 4 CAPACITOR 67300709 1 5 5 THERMOSTAT 67300403 1 5 6 COMPRESSOR 67301614 67301615 1 5 21 5 2 CIRCUIT DIAGRAM MODEL SV08A10A POWER INPUT BK BR WH BL ROTARY SWITCH Plan N Ribbed 7 cy 6 4 O O O WIRING DIAGRAM 2000 YL GN GN YL CAPACITOR C BR OR BK BK M RD RD i 5 YL BR BL Mm BL ou OLP THERMOSTAT
13. at the manifold connection 3 Open valve A and allow the proper charge to enter the system Valve B must remain closed 4 If more charge is required the high side will not take it Close valve A 5 With the unit running open valve B and add the balance of the charge a Do not add the liquid refrigerant to the Low side b Watch the Low side gauge allow pressure to rise to 30 165 c Turn off valve B and allow pressure to drop d Repeat steps b and c until the balance of the charge is in the system 6 When satisfied that the unit is operating correctly use the pinch off tool with the unit still running and clamp on to the pinch off tube Using a tube cutter cut the pinch off tube about 2 from the top of the pinch off tool Use sil fos solder and solder pinch off tube closed Turn off the unit allow it to set for a while and then test the leakage of the pinch off connection Equipment needed Vacuum pump Charging cylinder Manifold gauge Brazing equipment Pinch off tool capable of making a vapor proof seal Leak detector Tubing cutter Hand Tools to remove components Service valve CONDENSER COMPOUND HIGH PRESSURE SIDE O MANIFOLD X GAUGE B CAPILLARY TUBE SEE INSETS BELOW EVAPORATOR LOW PRESSURE SIDE COMPRESSOR EXTERNAL VACUUM PUMP CHARGING CYLINDER Figure 18
14. g conductor green is to be open 3 Measure the resistance value with an ohm meter between the jumpered lead and each exposed metallic part on the equipment at all the positions except OFF of the ROTARY SWITCH 4 The value should be over 1MQ 2 1 3 SPECIFICATIONS 1 3 1 FOR SV08A10A SV10A10A SV12A10A ITEMS MODELS SV08A10A SV10A10A SV12A10A POWER SUPPLY 10115 60Hz COOLING CAPACITY Btu h 8 000 10 000 12 000 INPUT W 840 1 050 1 260 RUNNING CURRENT A 7 7 9 6 11 5 E E R BTU W h 9 5 OPERATING INDOOR C 26 7 DB 19 4 WB CONDITION OUTDOOR C 35 DB 23 9 WB REFRIGERANT R 22 CHARGE 4609 16 2 oz 5200 18 3 oz 6159 21 7 oz EVAPORATOR 2 ROW 16 STACKS SLIT FIN TYPE 3 ROW 16 STACKS SLIT FIN TYPE M 2 ROW 23 STACKS 3 ROW 23 STACKS LOUVER FIN TYPE LOUVER FIN TYPE FAN INDOOR TURBO FAN FAN OUTDOOR AXIAL FAN FAN SPEEDS FAN COOLING 2 3 FAN MOTOR 6 POLES OPERATION CONTROL ROTARY SWITCH ROOM TEMP CONTROL THERMOSTAT VERTICAL LOUVER RIGHT amp LEFT HORIZONTAL LOUVER UP amp DOWN CONSTRUCTION TOP DOWN CHASSIS HRORECT B COMPRESSOR OVERLOAD PROTECTOR FAN MOTOR INTERNAL THERMAL PROTECTOR POWER GOGH 3 WIRE WITH GROUNDING ATTACHMENT PLUG CORD CONNECTED TYPE DRAIN SYSTEM DRAIN PIPE SPLASHED BY FAN SLINGER NET WEIGHT Ibs kg 66 30 77 35 79 36 OUTSIDE DIMENSION inch 1
15. h hole in window jamb to align with the existing holes in the curtain frame Attach curtain frame to window frame with 2 type B screws See Figure 29 NOTE Check all seals and plug any remaining air gaps with a suitable weatherproof caulk 14 If this is a casement window installation proceed to casement window installation If not stuff the foam seal strip between the vertical sash and the window glass See Figure 30 15 Attach the window locking bracket with a type B screw See Figure 30 3 7 CASEMENT WINDOW INSTALLATION Installation procedure is the same as that described in steps 1 through 11 and step 13 of the horizontal sliding window installation If the window opening is wider than 15 3 4 you will need to install a filler panel Make this panel from 3 4 inch thick wood and run it the full length of the window Attach it securely to the window frame and paint it to protect it from the weather Since styles and sizes of casement windows vary widely it is advisable to have the air conditioner installed by someone skilled in this type of installation 15 Curtain Frame Figure 27 Curtain Apply weather seal to side guides just below edge of Curtain Frame Figure 28 TN Base pan SEU I Y di Type B screw Type C screw Window Track Figure 29 locking bracket Figure 30 4 TROUBLESHOOTING GUIDE 4 1 OUTSIDE DIMENSIONS Unit mm i
16. in the power cord The green wire must be grounded 2 Connect to a single outlet 15A circuit 3 To avoid vibration or noise make sure the air conditioner is securely installed 4 Avoid placing furniture or draperies in front of the air inlet and outlet 3 3 HOW TO DRAIN When using drain pipe The air conditioner must be installed with a slight tilt towards the outside for proper water drainage On exceptionally hot and humid days the air conditioner may overflow condensed water to the outside If the air conditioner is used in a high humidity zone exchange the DRAIN CAP for the 2 DRAIN PIPE See Figure 20 Figure 21 About 1 4 Cooled air radiation o 25 d Over 20 Figure 19 BASE PAN Figure 20 BOTTOM DRAIN CAP BASE PAN b BOTTOM DRAIN PIPE Figure 21 12 3 4 WINDOW REQUIREMENTS 1 These instructions are for a horizontal sliding or a For installation in a casement window the window casement window frame assembly and the side of the building must be 2 The electrical outlet must be within reach of the adequate to support the weight of the air conditioner power cord 21 g 40 2 max 15 min 16 max 15 ya min Horizontal sliding window Casement window 3 5 INSTALLATION KIT CONTENTS 21 2 min Window Locki
17. n 2 1 2 2 Remove the 2 screws which fasten the rotary switch 3 Disconnect all the leads of the rotary switch terminals 4 Remove the rotary switch 5 Re install the components by referring to the above removal procedure See Figure 14 Figure 14 2 3 7 MOTOR 1 2 3 4 Remove the cabinet Refer to section 2 1 2 Remove the turbo fan Refer to section 2 2 1 Remove the fan Refer to section 2 2 2 Remove the 4 screws which fasten the motor from the Motor Mount See Figure 15 Remove the motor Re install the components by referring to the removal procedure above See Figure 15 2 4 REFRIGERATING CYCLE 2 4 1 CONDENSER Amm Discharge the refrigerant system using a Freon Recovery System If there is no valve to attach the recovery system to install one such as a WATCO A 1 before venting the Freon Leave the valve in place after servicing the system Remove the cabinet Refer to section 2 1 2 Remove the 4 screws which fasten the brace Remove the 4 screws which fasten the condenser and shroud See Figure 16 Remove the 2 screws which fasten the condenser and base pan After discharging the refrigerant completely unbraze the interconnecting tube at the condenser connections Remove the condenser Re install the components by referring to notes on p10 See Figure 16 2 4 2 EVAPORATOR Remove the cabinet Refer to section 2 1 2
18. nchs 6072335 368 14 1 2 lt o Y al LO 4 2 PIPING SYSTEM ID CONDENSER COIL CAPILLARY TUBE 4 ENS MOTOR COMPRESSOR TURBO FAN EVAPORATOR COIL Following is a brief description of the important components and their functions in the refrigeration system Refer to Fig 31 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle ROOM AIR CONITIONER CYCLE OF REFRIGERATION EVAPORATOR COIL CONDENSER COIL VAPOR INLET SUCTION LINE COMPLETE LIQUID HOT BOIL OEE PONT COOL LOW PRESSURE VAPOR DISCHARGED COOLED lt A E4 ROOM HEAT LOAD Es Ed 24 OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH LIQUID PRESSURE DROP LIQUID OUTLET LIQUID REFRIGERANT r ZZ HIGH PRESSURE VAPOR wa wa CAPILLARY TUBE 7 EN REFRIGERANT LOW PRESSURE VAPOR Figure 31 2555 16 4 3 TROUBLESHOOTING GUIDE In general possible trouble is classified in two kinds The one is called Starting Failure which is caused from an electrical defect and the other is ineffective Air Conditioning caused by a defect in the refrigeration circuit and or improper application Ineffective Cooling Check cold air circula
19. ng Side Guide Curtain Frame Curtain Bracket Upper Guide CS Bracket Support Bracket Foam Seal Gasket Side Guide Seal Leveling bolt amp nut Side Guid Window Track Seal 3 6 HORIZONTAL SLIDING WINDOW INSTALLATION 1 Loosely attach the support bracket to the bottom of bracket using bolts washers and nuts Attach the leveling bolt and nut See Figure 22 Remove protective backing from window track seal and apply seal to window track See Figure 23 Measure and lightly mark a line 8 1 4 from window jamb Center the support bracket assembly on the window track and fasten with 4 type C screws See Figure 23 Put the support bracket against the outside wall and tighten the bolts on top of the bracket Adjust the leveling bolt so that the air conditioner will be installed with a very slight tilt about 1 4 downward toward the outside for proper drainage Tighten the nut See Figure 24 NOTE DO NOT drill a hole in the bottom of the base pan The air conditioner is designed to operate with the bottom of the base pan approximately half full of water Fasten side guides to the sides of the air conditioner using 3 type A screws per guide start with first screw at middle of guide See Figure 25 Fasten upper guide on the top of the air conditioner using 3 type A screws See Figure 25 Measure height
20. o section 2 1 2 Remove the brace Refer to section 2 2 1 Remove 6 screws which fasten the condenser Move the condenser to the right carefully Remove the clamp which secures the fan with a pair of hand pliers Remove the fan See Figure 7 Re install by referring to the removal procedure Figure 4 Figure 6 Figure 7 2 2 3 SHROUD 1 Remove the fan Refer to section 2 2 2 2 Remove the shroud See Figure 8 3 Re install the components by referring to the removal procedure above 2 3 ELECTRICAL PARTS 2 3 1 OVERLOAD PROTECTOR 1 Remove the cabinet Refer to section 2 1 2 Remove the nut which fastens the terminal cover Remove the terminal cover See Figure 9 Remove all the leads from the overload protector Remove the overload protector Re install the components by referring to the removal procedure above ook Cc 2 3 2 COMPRESSOR 1 Remove the cabinet Refer to section 2 1 2 2 Discharge the refrigerant system using a Freon Recovery System If there is no valve to attach the recovery system to install one such as a WATCO A 1 before venting the Freon Leave the valve in place after servicing the system 3 Remove the overload protector Refer to section 2 3 1 4 After purging the unit completely unbraze the suction and discharge tubes at the compressor connections
21. ressor for open circuit or ground If open or grounded replace the compressor Overload Check the compressor overload if externally mounted Replace if open If the compressor temperature is high remove the overload cool it and retest Compressor cycles on overload Voltage Check the voltage If not within limits call an electrician Overload Check overload if externally mounted Replace if open If the compressor temperature is high remove the overload cool and retest Compressor cycles on overload Fan motor If not running determine the cause Replace if required Condenser air flow restriction Remove the cabinet inspect the interior surface of the condenser if restricted clean carefully with a vacuum cleaner do not damage fins or brush Clean the interior base before reassembling Condenser fins damaged If condenser fins are closed over a large area on the coil surface head pressures will increase causing the compressor to overload Straighten the fins or replace the coil Compressor cycles on overload Capacitor Test capacitor Wiring Check the terminals If loose repair or replace Refrigeration System Check the system for a restriction Insufficient cooling or heating Air filter If restricted clean or replace Exhaust damper door Close if open Unit undersized Determine if the unit is properly sized for the
22. t of compressor locking of rotor metal Replacement of compressor Motor damaged 18 ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM 115V 10 103 5V 126 5V COMPLAINT CAUSE REMEDY Fan motor will not run No power Check voltage at outlet Correct if none Power supply cord Check voltage to rotary switch If none check power supply cord Replace cord if circuit is open Rotary switch Check switch continuity Refer to wiring diagram for terminal identification Replace switch if defective Wire disconnected or connection loose Connect wire Refer to wiring diagram for terminal identification Repair or replace loose terminal Capacitor Discharge capacitor before testing Test capacitor Replace if not within 10 of manufacturer s rating Replace if shorted open or damaged Will not rotate Fan blade hitting shroud or blower wheel hitting scroll Realign assembly Units using slinger ring for condenser fan must have 1 4 to 5 16 inch clearance to the base If it hits the base shim up the bottom of the fan motor with mounting screw s Check fan motor bearings if motor shaft will not rotate replace the motor Fan motor runs intermittently Revolves on overload Check voltage If not within limits call an electrician Test capacitor Check bearings Does the fan blade rotate freely If not replace fan motor
23. tion Check outdoor coil for smooth flow heat exchanger amp the fan operation Dirty indoor coll Check for gas leakage Heat exchanger Not on separate circuit Malfunction of fan Repair gaseak Clogged air filter Unit runs but poor cooling Check heat load increase Clean condenser Check inside gas Replace unit if the pressure unit is beyond repair Obstruction at air outlet Adjustment of refrigerant charge Correct above problem Malfunction of compressor Check clogging in refrigera Replacement of tion system compressor Satisfactory operation with Repair clogging in refrigera temperature difference of tion system inlet amp outlet air 44 50 F 7 10 C 47 Fails to Start Check power source Check circuit breaker and fuse Check control switch Gas leakage of feeler bulb setting of thermostat Check control switch Fan only fails to start Improper wiring Defective of fan motor capacitor Compressor only fails to start Drop of power voltage lt Improper thermostat setting Defective of compressor capacitor Loose terminal connection Irregular motor resistance O Irregular motor insulation Q Capacitor check Improper wiring Replacement lt Irregular motor resistance Q Replacement of fan motor Tests normal but fails to start Irregular motor insulation Q Replacemen
24. uum pump and slowly open manifold valves A and B with two full turns counterclockwise and leave the valves open The vacuum pump is now pulling through valves A and B up to valve by means of the manifold and entire system If high vacuum equipment is used adjust valves A and B so they are opened only slightly for a few minutes then open slowly with the two full turns counterclockwise This will keep oil from foaming and being drawn into the vacuum pump 3 Operate the vacuum pump for 20 to 30 minutes until 600 microns of vaccum is obtained Close valves A and B and observe vacuum gauge for a few minutes A rise in pressure would indicate a possible leak or moisture remaining in the system With valves A and B closed stop the vacuum pump 4 Remove the hose from the vacuum pump and place it on the charging cylinder See figure 18B on page 11 Open valve C Discharge the line at the manifold connection 5 The system is now ready for final charging 10 3 Remove the capillary tube 4 Re install the components by referring to notes on page 11 6 Recharge as follows 1 Refrigeration cycle systems are charged from the High side If the total charge cannot be put in the High side the balance will be put in the suction line through the access valve which you installed as the system was opened 2 Connect the charging cylinder as shown in figure 18B on page 11 With valve C open discharge the hose
25. ward completely 10 Re install the components by referring to the removal procedure above Refer to the circuit diagram found on pages 21 22 in this manual and on the control box Figure 3 2 2 AIR HANDLING PARTS 2 2 1 AIR GUIDE AND TURBO FAN O OI won Remove the front grille Refer to section 2 1 1 Remove the cabinet Refer to section 2 1 2 Remove the control box Refer to section 2 1 3 Remove the 4 screws which fasten the brace Remove the brace Remove the 2 screws which fasten the upper air guide See Figure 4 Remove the upper air guide Remove the 2 screws which fasten the evaporator Move the evaporator forward while pulling it upward slightly See Figure 5 10 Remove orifice by pulling two taps 11 Remove the clamp with a hand plier which secures the turbo fan 12 Remove the turbo fan See Figure 6 13 Remove the motor Refer to section 2 3 7 14 Remove the 2 screws which fastens the lower air guide from the base pan 15 Remove the 2 screws which fasten the motor mount from the base pan 16 Remove the 2 screws which fasten the lower air guide and motor mount 17 Move the lower air guide backward and pull out from the base pan Move the lower air guide carefully 18 Re install the components by referring to the removal procedure above 2 2 2 FAN er Rr Remove the cabinet Refer t
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