Download Single Packaged Air Conditioner SERVICE MANUAL
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LK-SM-101 Single Packaged Air Conditioner SERVICE MANUAL MODELS: LK-0329CH/AH, LK-0329AHF LK-0429CH/AH, LK-0429AHF LK-0529CH/AH, LK-0529AHF Contents Model Number Nomenclature...............................................................................................3 General Data ..........................................................................................................................4 Dimensions ............................................................................................................................5 Refrigerant Circuit Diagram..................................................................................................6 Wiring Diagram ......................................................................................................................7 Troubleshooting Guide .........................................................................................................8 Features of Controller .........................................................................................................14 Exploded View and Replacement Parts List .....................................................................15 —2— Model Number Nomenclature LK-0529CH H: Horizontal Flow C: Cooling Only A: Gold Fin + Cooling Only Development Sequence 2 : 220V, 60Hz, 1Ø 03 : 3 ton Nominal cooling capacity 04 : 4 ton 05 : 5 ton LG Single Package Air Conditioner —3— General Data Table-1 Nominal ton Models ARI Net Cooling Capacity (Ton) 3 4 5 LK-0329CH/AH(F) LK-0429CH/AH(F) LK-0529CH/AH(F) Capacity (BTU/hr) 35,000 47,000 57,000 (Kcal/h) 8,821 11,845 14,364 Electrical Data Voltage (V,PH) 208~230V,1PH 208~230V,1PH 208~230V,1PH M.C.A(with standard motor) Cooling (Amps) 29 31 48 Power Input Cooling (Watt) 3,740 4,350 6,000 Performance Air Circulation Nominal CFM CFM 1,050 1,590 1,750 SEER Cooling (BTU/hr.W) 10.0 11.0 10.0 Sound Rating Cooling dB(A) 8 8.4 8.4 Features LG Electronic Thermostat Option Option Option Time Delay Safety Function O O O Cooling Operation Mode O O O Heating Operation Mode(with E/Heater) O O O Soft Dry Operation Timer Setting (24-Hour on/off) Auto restart mode Humidifier function Test function Self-Diagnosis Function Filter type Compressor Type Scroll Scroll Scroll Quantity 1 1 1 Outdoor Coil Type High efficiency High efficiency High efficiency Tube size(O.D) (inch) 9/32 9/32 9/32 (mm) 7.00 7.00 7.00 Row/FPI 1R/18FPI 2R/18FPI 2R/18FPI Lengh (inch) 55 1/8 55 1/8 55 1/8 (mm) 1,400 1,400 1,400 Face area (sq.ft) 10.72 10.72 10.72 (m2) 1.00 1.00 1.00 Indoor Coil Type High efficiency High efficiency High efficiency Tube size(O.D) (inch) 3/8 3/8 3/8 (mm) 9.52 9.52 9.52 Row/FPI 2R/18FPI 3R/18FPI 3R/18FPI Lengh (inch) 21 5/8 21 5/8 21 5/8 (mm) 550 550 550 Face area (sq.ft) 4.51 4.51 4.51 (m2) 0.42 0.42 0.42 Outdoor Fan Type Propeller Propeller Propeller No. Used/Diameter(in.) 1EA/22" 1EA/22" 1EA/22" Drive Type Direct Direct Direct CFM 3,500 3,500 3,500 No. Motor/Motor output(Hp) 1/0.33 1/0.33 1/0.33 Motor RPM 1,060 1,060 1,060 Indoor Fan Type Centrifugal Blower Fan Centrifugal Blower Fan Centrifugal Blower Fan No. Used 1EA 1EA 1EA Diameter/Width(in.) 11"/11" 11"/11" 11"/11" Drive Type/Motor Step Direct/3 Direct/3 Direct/3 No.motors 1EA 1EA 1EA Motor output(standard/oversized) 0.5Hp/N.A 0.75Hp/N.A 0.75Hp/N.A Motor rpm(Standard/oversized) 840N.A 1,020/N.A 1,090/N.A Drain Connection Size(in.) 3/4" 3/4" 3/4" Refrigerant (kg) 1.7 2.2 2.3 Refrigerant Charge (lbs) 3.75 4.85 5.07 Type R-22 R-22 R-22 Refrigerant Control Capillary Tube Capillary Tube Capillary Tube Dimensions Indoor unit (WxHxD) (inch) 43 3/8*28 9/16*32 11/16 43 3/8*28 9/16*32 11/16 43 3/8*28 9/16*32 11/16 (mm) 1102*725*830 1102*725*830 1102*725*830 Weight Net (kg) 110 120 140 (lbs) 242.5 264.6 308.6 —4— Dimensions LK-0329CH/AH(F), LK-0429CH/AH(F), LK-0529CH/AH(F) CLEARANCE 34" CLEARANCE 48" (HORIZONTAL) Unit : Inch(mm) A 289/16 (725) B 3211/16 (830) C 433/8 (1102) D 2011/16 (525) E 27/8 (73) CLEARANCE 34" E A Center line of hole D B 1.5" Dia. hole power wires C 1.5" Dia. hole other purpose CLEARANCE 18" Unit : Inch(mm) 1 1/2 (38) C 9 1/2 (242) 3/4 G (19) E 55/8 (143) F 24 1/4 (622) G 11 9/16 (294) H 9 1/16 (230) F H D E B RETURN 13 3/16 (335) SUPPLY A A —5— B C D Refrigerant Circuit Diagram LK-0329CH/AH(F), LK-0429CH/AH(F), LK-0529CH/AH(F) PRESSURE LOW-PRESSURE PORT SWITCH Bypass Cycle (option) SUCTION LINE SV OUTDOOR COIL PRESSURE PORT S DISCHARGE LINE D CAPILLARY TUBE —6— INDOOR COIL : REFRIGERANT FLOW Wiring Diagram LK-0329CH/AH(F), LK-0429CH/AH(F), LK-0529CH/AH(F) DIAGRAM WIRING(WITH LG'S THERMOSTAT) 1Ø 208~230V,60Hz POWER SUPPLY 1Ø 208~230V,60Hz POWER SUPPLY (L) USING ELECTRIC HEATER NOTES FACTORY WIRING BK:BLACK OR:ORANGE YL:YELLOW OPTIONAL WIRING BR:BROWN RD:RED FIELD WIRING BL:BLUE WH:WHITE (N) T/B : TERMINAL BLOCK TRANS (AC 24V) BK BK BL FUSE (250V, 10A) BK T/B #4 YL LOW PRESSUTRE SWITCH TERMINAL BLOCK RD L1 L2 T1 T2 L1 L2 A MAGNETIC CONTACT (For comp) BK WH EH 4 0 6 1 CAPACITOR ELECTRIC HEATER H C RD WH F OR C S BL R YL 1 WH 2 AC 24V 3 Fan 4 Comp 5 Heater BK COMP OR BK THERMISTER FOR EVA (OPTION) "X" B POWER RELAY (For I/motor) B T2 MAGNETIC CONTACT (For E/heater) BL T1 A CUT "X"POINT OF WIRE AND CONNECT THERMISTER WIRE ON THE EVAPORATOR(OPTION) YL T/B #1 CAPACITOR T/B #2 BK RD b AC 24V L (R) N (C) 1 (G) 2 (Y1) 3 (W1) 6 RD LG'S THERMOSTAT YL BR OR RD c OR BK YL T/B #3 a MOTOR (IN) MOTOR (OUT) RD MODEL a b c 3RT/4RT BLACK BLUE RED 5RT BLUE BLACK RED P/NO:3854A30047S DIAGRAM WIRING(WITH LOCALLY PURCHASED THERMOSTAT) 1Ø 208~230V,60Hz POWER SUPPLY NOTES 1Ø 208~230V,60Hz POWER SUPPLY (L) USING ELECTRIC HEATER FACTORY WIRING BK:BLACK OR:ORANGE YL:YELLOW OPTIONAL WIRING BR:BROWN RD:RED FIELD WIRING WH:WHITE BL:BLUE (N) T/B : TERMINAL BLOCK TERMINAL BLOCK TRANS BK TIME DELAY P.C.B BL BK BL CUT "X"POINT OF WIRE AND CONNECT THERMISTER ON THE EVAPORATOR(OPTION) BL FUSE (250V, 10A) BK BL L2 T1 T2 L1 L2 BK A B WH EH CAPACITOR ELECTRIC HEATER H C RD WH F "X" MAGNETIC CONTACT (For comp) AC 24V C OR BK 4 0 6 1 YL 2 Heater THERMISTER FOR EVA (OPTION) BL T/B #1 CAPACITOR 1 Comp R COMP N Fan OR S L AC 24V POWER RELAY (For /Imotor) T2 LOW PRESSUTRE S/W L1 YL T/B #2 RD 1 AC 24V WH 2 Fan BK 3 Comp YL 4 Heater BK RD b 3 ELECTRO-MECHANICAL THERMOSTAT RD 5 R G Y W MECHANICAL THERMOSTAT 6 RD YL BR OR B T1 MAGNETIC CONTACT (For E/heater) A RD c OR BK YL MOTOR (OUT) MOTOR (IN) a T/B #3 MODEL a b c 3RT/4RT BLACK BLUE RED 5RT BLUE BLACK RED P/NO:3854A30047S —7— Troubleshooting Guide In general, possible trouble is classified in two causes. 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 improper application. Unit runs but ineffective cooling Ineffective Cooling or Heating Check of cold (warm) air circulation for smooth flow. Check of outdoor coil (heat exchanger) & the fan operation. Dirty indoor coil (heat exchanger.) Check gas leakage. Malfunction of fan. Repair gas leak. Clogging of air filter. Replacement of unit if the unit is beyond repair. Check heat load increase in cooling operation. Unexpected residue Added electrical utencil Obstruction at air outlet. Check of inside gas pressure. Adjust refrigerant charge. Countermeasure against above trouble. Malfunction of compressor. Check clogging in refrigeration circuit. Repair clogging in refrigeration circuit. Satisfactory operation with temperature difference of inlet & outlet air ; COOLING : 7~10°C HEATING : 15~17°C —8— Replacement of compressor Troubleshooting Guide Fails to Start Check power source. Check of circuit breaker and fuse. Check control switch setting. Check control switch. Compressor only fails to start. Fan only fails to start. Electric heater is not energized Improper wiring. Drop of power voltage. Defect of compressor capacitor. Loose terminal connection. Improper wiring Defect of fan motor capacitor. Irregular motor resistance (Ω) Capacitor check. Irregular motor insulation (Ω) Replacement of capacitor. Replacement of fan motor. Improper electric heater Irregular motor resistance ( Ω ) Regular but fails to start. Replacement of electric heater. Irregular motor insulation ( Ω ) Replacement of compressor. Replacement of compressor —9— Troubleshooting Guide PACKAGE AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM 208~230V 187V 253V 1. No cooling and heating operation performed 1) Both the blower and the compressor do not work WHAT TROUBLED Other parts except the unit COMPLAINTS HOW TO CHECK REMEDY • Electric supply interrupted • Defective power wiring • Cut off power fuse Measure power supply with a tester in case that the same power source is supplied to other equipment except the unit, what and where troubled can be discovered by checking the operation of other equipment. Too low voltage Measure it with a tester. Check the power source. Use a thick cable if necessary. Magnetic switch for compressor & fan motor Control point is on condition of "OFF" due to trouble. Make short-circuit, then measure it with tester. Replace it if necessary. Operating switch Troubled or defective contactor Check it with the eyes or tester. Repair or replace it. • Repair a switch box and relative instrument. • Replacement of fuse • Request a power supplier to repair. 2) Only Indoor blowers do not work WHAT TROUBLED Motor Capacitor Electric wiring COMPLAINTS HOW TO CHECK REMEDY • Over heated • Wiring short Check it with tester Repair or replace it. Defected Check it with a tester. Replace it. • Cut- OFF of wiring • Short circuited on operation Check it with a tester. Rewiring or Repair. — 10 — Troubleshooting Guide 3) Only outdoor fan does not work WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY Motor • Over-heated • Wire short Check how it is insulated. Repair or replace it. Electric Wiring Cut off of wiring Check it with a tester. Rewiring or repair. Short circuited on operation 4) Only compressor does not work WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY Magnetic switch for compressor motor Defective contact, magnetic coil troubled. Check it with the eyes on with a tester. Repair or replace it. Compressor motor Troubled over-heated (layer short) Check how it is insulated. Replace or repair the compressor. High pressure switch (Option part) Troubled or defective contact or operating Check it with a tester. Replace it if necessary. Electric circuit Defective connection or disconnection of the circuit for compressor. Check it with a tester. Rewiring or push reset button. — 11 — Troubleshooting Guide 2. The Units discontinue after the operation started WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY Outdoor coil Coil is dirty *1 Checking Wash it by means of something like chemical washing. In-condensable gas blended. Air intruded into the refrigerant pipe line *1 In the event that difference between the saturating temperature corresponding to high pressure and the temperature of air discharged from the outdoor coil is more than 15°C, incondensable gas may be blended. Extract air by vacuum pump, then replenish (charge) the refrigerant. Improper adjustment Check it with a pressure gauge. Read just it to normal operating pressure. (Note) Don't alternate the specified adjusting pressure. If the adjusted pressure exceed the specified range, it will cause a great accident. A shortage of refrigerant amount. * 2 Check pressure Replenish the refrigerant. Repair the spot where it is leaked. Reverse rotation of fan Obstacle Confirm the wind blowing out upward. Air short circuit *1 Check it with eyes. If reversed, connect interchanged wires to each terminal. Power wirings. High pressure switch (Option part) Refrigerant Outdoor Fan Note: Use an appropriate measuring instrument for readjustment. *1: High-pressure switch moves. *2: Low- pressure switch moves. — 12 — Troubleshooting Guide 3. The unit is working, but not cooling and heating sufficiently (Both blower and compressor are working) WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY Load Much Cooling or Heating load Heat load increased. Window or door has many cracks or gaps. Do necessary disposal respectively. Air flow Obstacle disturbs Intake of uniform airflow. Checking Correct it. Short air volume Reverse rotation of blower. Checking Correct it. Refrigerant Shortage in the charged refrigerant. Coil inlet pipe is frosted Recharge it. (Repair the leakage spot). Air passage Improper or foreign bodies Checking Correct or clear the foreign bodies. Air filter Clogged with dust Checking Cleaning 4. All the functions are performed as specified, but very noisy and vibrant WHAT TROUBLED Compressor Blower COMPLAINTS HOW TO CHECK REMEDY Liquid refrigerant flooding back from the evaporator. • Check for refrigerant over-charge. • Check to see if the intake air temperature is extremely cold. • Check for insufficient air flow quantity. Faulty Discharge valve and suction valve. • Checking • Replace the compressor Fan broken. Checking Repair or replace it. Clear the foreign bodies. Foreign matters intruded. Screws Looseness or fail-off of screws Checking Correct Electric troubles (Magnetic contactor) Defective contact. Defective contact point. Rusting and foreign matters in the iron core contact face. Defective contact of the operating switch. Checking Repair and clean or replace it. Others Improper installation Checking Correct it. — 13 — Features of Controller 1. Timer PCB Circuit Diagram 12V R03M 220K 8 R01M 47K 3 2 C01M 3.3uF + R06M 1K + - R02M 47K DO1M 1N4148 Q01M KRC107K 1 12V AC220V 60Hz RY01M JQ1a-12V IC01M KA393 4 L1 D02D~D05D 1SR139-600 12V 0 IC01D 1 7812 C04D 104 C01D 470uF 25V ZNR INR14D471 D04D + D02D D05D L2 D03D L3 C02D 104 RY01M JQ1a-12V TRANS 2. Timer PCB ASSY C1 CN2 R10 Q2 D6 RY1 — 14 — CN3 C4 R9 IC3 PCB: 2Q01062A CN1 D2 D3 D5 IC2 C8 C6 R6 R8 R5 C7 D1 D4 Q1 C5 R4 D7 C2 R3 R2 R7 IC1 R1 C3 Magnetic Relay Exploded View and Replacement Parts List 1. LK-0329CH/AH(F), 0429CH/AH(F), 0529CH/AH(F) • Exploded View 249950 269140 W0CZZ 261704 W0CZZ W6920 566001 — 15 — Exploded View and Replacement Parts List 346810 546810 554160 359012 559010 354210 554031 330870 552111 — 16 — Exploded View and Replacement Parts List Replacement Parts List LOCATION NO. 249950 261704 269140 330870 346810 354210 359012 546810 552111 554031 554160 559010 566000 566001 W6920 738281 W0CZZ W0CZZ Parts name CONTROL BOX ASSEMBLY,SINGLE TRANSFORMER,POWER TIMER DRAIN PAN ASSEMBLY MOTOR ASSEMBLY,INDOOR EVAPORATOR ASSEMBLY,FIRST FAN ASSEMBLY,BLOWER MOTOR ASSEMBLY,OUTDOOR TUBE ASSEMBLY,CAPILLARY CONDENSER ASSEMBLY,BENT COMPRESSOR FAN ASSEMBLY,PROPELLER SWITCH ASSEMBLY,PRESSURE SWITCH,MAGNET RELAY MANUAL,SERVICE CAPACITOR,DRAWING CAPACITOR,DRAWING LK-0529CH 4995A10060E 6170A10002A 3Q01017C 3087A10012A 4681A20057B 5421A10002S 2A00578V 4681A20039B 5211A10270A 5403A10019A 5416A10002B 5901A10010A 6601A20007C 2A00771F 6920AP3194B 3828A20220B 0CZZA10001A 0CZZA20001B Part Number LK-0529AH LK-0529AHF 4995A10060E 4995A10060F 6170A10002A 6170A10001F 3Q01017C 3087A10012A 3087A10012A 4681A20057B 4681A20057B 5421A10002S 5421A10002S 2A00578V 2A00578V 4681A20039B 4681A20039B 5211A10270A 5211A10270A 5403A10019B 5403A10019B 5416A10002B 5416A10002B 5901A10010A 5901A10010A 6601A20007C 6601A20007C 2A00771F 2A00771F 6920AP3194B 6920AP3194B 3828A20220B 3828A20220B 0CZZA10001A 0CZZA10001A 0CZZA20001B 0CZZA20001B Rrmarks Low pressure S/W 6+55µF 15µF for I/D Motor Accessory or Option Parts List LOCATION NO. 267110 267110 Parts name REMOTE CONTROLLER ASS`Y REMOTE CONTROLLER ASS`Y(WIRELESS) LK-0529CH 6711A20063A 6711A20041R — 17 — Part Number LK-0529AH 6711A20063A 6711A20041R LK-0529AHF 6711A20063A 6711A20041R Rrmarks OPTION PARTS OPTION PARTS Exploded View and Replacement Parts List Replacement Parts List LOCATION NO. 249950 261704 269140 330870 346810 354210 359012 546810 552111 554031 554160 559010 561410 566000 566001 W6920 738281 W0CZZ W0CZZ Parts name LK-0429CH CONTROL BOX ASSEMBLY,SINGLE 4995A10060A TRANSFORMER,POWER 6170A10002A TIMER 3Q01017C DRAIN PAN ASSEMBLY 3087A10012A MOTOR ASSEMBLY,INDOOR 4681A20057B EVAPORATOR ASSEMBLY,FIRST 5421A10002S FAN ASSEMBLY,BLOWER 2A00578V MOTOR ASSEMBLY,OUTDOOR 4681A20039B 5211A10250A TUBE ASSEMBLY,CAPILLARY 5211A10250D CONDENSER ASSEMBLY,BENT 5403A10019A COMPRESSOR SET 2520UFJK1AA FAN ASSEMBLY,PROPELLER 5901A10010A COIL ASSEMBLY,SOLENOID 6421A20003F SWITCH ASSEMBLY,PRESSURE 6601A20007C SWITCH,MAGNET 2A00771F RELAY 6920AP3194B MANUAL,SERVICE 3828A20220B CAPACITOR,DRAWING 0CZZA20001B CAPACITOR,DRAWING 6120AR2359U Part Number LK-0429AH 4995A10060A 6170A10002A 3Q01017C 3087A10012A 4681A20057B 5421A10002S 2A00578V 4681A20039B 5211A10250A 5211A10250D 5403A10019B 2520UFJK1AA 5901A10010A 6421A20003F 6601A20007C 2A00771F 6920AP3194B 3828A20220B 0CZZA20001B 6120AR2359U LK-0429AHF 4995A10060C 6170A10001F 3087A10012A 4681A20057B 5421A10002S 2A00578V 4681A20039B 5211A10250A 5211A10250D 5403A10019B 2520UFJK1AA 5901A10010A 6421A20003F 6601A20007C 2A00771F 6920AP3194B 3828A20220B 0CZZA20001B 6120AR2359U Part Number LK-0429AH 6711A20063A 6711A20041R 5220A90002B 6421A20003F 6600AG3057C LK-0429AHF 6711A20063A 6711A20041R 5220A90002B 6421A20003F 6600AG3057C Rrmarks FOR NORMAL PRODUCT FOR BYPASS CYCLE Low pressure S/W 15µF for I/D Motor 6+60µF Accessory or Option Parts List LOCATION NO. 267110 267110 552204 561410 566000 Parts name LK-0429CH REMOTE CONTROLLER ASS`Y 6711A20063A REMOTE CONTROLLER ASS`Y(WIRELESS) 6711A20041R VALVE,SOLENOID 5220A90002B COIL ASSEMBLY,SOLENOID 6421A20003F SWITCH,PRESSURE 6600AG3057C — 18 — Rrmarks OPTION PARTS OPTION PARTS FOR BYPASS CYCLE FOR BYPASS CYCLE FOR BYPASS CYCLE Exploded View and Replacement Parts List Replacement Parts List LOCATION NO. Parts name 249950 261704 269140 330870 346810 354210 359012 546810 CONTROL BOX ASSEMBLY,SINGLE TRANSFORMER,POWER TIMER DRAIN PAN ASSEMBLY MOTOR ASSEMBLY,INDOOR EVAPORATOR ASSEMBLY,FIRST FAN ASSEMBLY,BLOWER MOTOR ASSEMBLY,OUTDOOR 552111 TUBE ASSEMBLY,CAPILLARY 554031 554160 559010 566000 566001 W6920 738281 W0CZZ W0CZZ CONDENSER ASSEMBLY,BENT COMPRESSOR SET FAN ASSEMBLY,PROPELLER SWITCH ASSEMBLY,PRESSURE SWITCH,MAGNET RELAY MANUAL,SERVICE CAPACITOR,DRAWING CAPACITOR,DRAWING Part Number LK-0329CH LK-0329AH 4995A10060B 4995A10060B 6170A10002A 6170A10002A 3Q01017C 3Q01017C 3087A10012A 3087A10012A 4681A20057C 4681A20057C 5421A10002T 5421A10002T 2A00578V 2A00578V 4681A20039B 4681A20039B 5211A10268A 5211A10268A 5211A10268B 5211A10268B 5403A10021A 5403A10021B 2520UFDK1AA 2520UFDK1AA 5901A10010A 5901A10010A 6601A20007C 6601A20007C 2A00771F 2A00771F 6920AP3194B 6920AP3194B 3828A20220B 3828A20220B 0CZZA20001B 0CZZA20001B 6120AR2194K 6120AR2194K LK-0329AHF 4995A10060D 6170A10001F 3087A10012A 4681A20057C 5421A10002T 2A00578V 4681A20039B 5211A10268A 5211A10268B 5403A10021B 2520UFDK1AA 5901A10010A 6601A20007C 2A00771F 6920AP3194B 3828A20220B 0CZZA20001B 6120AR2194K Rrmarks FOR NORMAL PRODUCT FOR THE PRODUCT WITH BYPASS CYCLE Low pressure S/W 15µF/450V For Indoor Motor 6+45µF Accessory or Option Parts List LOCATION NO. 267110 267110 552204 561410 566000 Parts name LK-0329CH REMOTE CONTROLLER ASS`Y 6711A20063A REMOTE CONTROLLER ASS`Y(WIRELESS) 6711A20041R VALVE,SOLENOID 5220A90002B COIL ASSEMBLY,SOLENOID 6421A20003F SWITCH,PRESSURE 6600AG3057C Part Number LK-0329AH 6711A20063A 6711A20041R 5220A90002B 6421A20003F 6600AG3057C — 19 — LK-0329AHF 6711A20063A 6711A20041R 5220A90002B 6421A20003F 6600AG3057C Rrmarks OPTION PARTS OPTION PARTS FOR BYPASS CYCLE FOR BYPASS CYCLE FOR BYPASS CYCLE P/No.: 3828A20220B December, 2004 Printed in Korea