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York YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 operation manual LD00951

Models: YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 YK M3 M3 G4

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LD00951

FIG. 18 – SCHEMATIC DRAWING – (YK) COMPRESSOR LUBRICATION SYSTEM

FORM 160.49-O2

LD00951

YORK INTERNATIONAL

39

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York YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 operation manual LD00951

Contents

W ARNING MILLENNIUM TMFORM NO TABLE OF CONTENTSREFERENCE INSTRUCTIONS DESCRIPTIONNOMENCLATURE R-22UNITSR-134a SYSTEM OPERATION DESCRIPTION See Fig SECTIONCAPACITY CONTROL FIG. 3 - MICROCOMPUTER CONTROL CENTER AND KEYPAD SECTION MICROCOMPUTER CONTROL CENTERINTRODUCTION CONTROL CENTER OPERATIONDISPLAYING SYSTEM PARAMETERS To Display SSS MOTOR CURRENT / VOLTS To Display CHILLED LIQUID TEMPERATURESTo Display REFRIGERANT PRESSURE To Display OIL PRESSURESYSTEM SETPOINTS is displayedTo Display MOTOR CURRENT To Display OPERATING HOURS and STARTS COUNTERPage DISPLAYING SYSTEM SETPOINTS Solid State Starter Applications Only To Display REMOTE RESET TEMP RANGE SetpointPROGRAMMING SYSTEM SETPOINTS PROGRAMMING1.Press ACCESS CODE key THE MICROCOMPUTER CONTROL CENTERSolid State Starter, refer to Fig Electro-MechanicalStarter, refer to FigTo Enter PULL DOWN DEMAND Setpoint Refer to Fig 3.Press and release ADVANCE DAY/SCROLL key.The following prompt message is displayed To Enter REMOTE/ RESET TEMP RANGE Setpoint Refer to Fig PRE-ROTATIONVANES KEYS SERVICE KEYSOTHER SERVICE KEYS 1.Press ACCESS CODE key OPERATING MODESDISPLAY MESSAGES COMPRESSOR SWITCHTherefore SYSTEM SHUTDOWN MESSAGES when Control Center is in REMOTE mode Phase rotation/loss Solid State Starter applications only FUNCTIONJUMPER POSITION Solid State Starter applications onlySolid State Starter applications only MON XX XX AM - DC UNDERVOLTAGE MON XX XX AM - AUX SAFETY SHUTDOWNMON XX XX AM - HIGH SPEED DRAIN TEMP MON XX XX AM - OPEN DRAIN TEMP THERMOCOUPLEand remains energized as long as the fused disconnect switch to the starter orSTART-UPPROCEDURE SECTIONCHILLER OPERATION Condenser Water Temperature Control SYSTEM STARTING & SHUTDOWN SEQUENCEOPERATOR INITIATED OPERATING LOG SHEET CHECKING OPERATIONQuarterly OPERATING INSPECTIONS - See SectionDaily WeeklyCYCLING SHUTDOWNS NEED FOR MAINTENANCE OR SERVICENORMAL AND SAFETY SYSTEM SHUTDOWNS SAFETY SHUTDOWNSSTART-UPAFTER PROLONGED SHUTDOWN PROLONGED SHUTDOWN27385A SECTIONSYSTEM COMPONENTS DESCRIPTION FRONT VIEWCOMPRESSOR LUBRICATION SYSTEM See Fig GENERALCOMPRESSOR CAPACITY CONTROLLD00951 REFRIGERANT FLOW CONTROL OIL HEATERMOTOR DRIVELINE HEAT EXCHANGERSACTUAL LEVEL = XXX% LEVEL SETP = XXX% MICROCOMPUTER CONTROL CENTER See SectionSOLID STATE STARTER Optional VARIABLE SPEED DRIVE OptionalOPERATIONAL MAINTENANCE SECTIONOIL RETURN SYSTEM THE OIL CHARGE OIL CHARGING PROCEDURESECTION TROUBLESHOOTINGYORK INTERNATIONAL YORK INTERNATIONAL RESULTS 1. SYMPTOM ABNORMALLY HIGH DISCHARGE PRESSURE2. SYMPTOM ABNORMALLY LOW SUCTION PRESSURE 3. SYMPTOM HIGH COOLER PRESSUREPOSSIBLE CAUSE 7. SYMPTOM OIL PUMP VIBRATES OR IS NOISY11. SYMPTOM REDUCED OIL PUMP CAPACITY RESULTSCHECKING SYSTEM FOR LEAKS LEAK TESTING DURING OPERATIONSECTION RENEWAL PARTSVACUUM TESTING VACUUM DEHYDRATION REFRIGERANT CHARGING CHECKING THE REFRIGERANT CHARGEDURING UNIT SHUTDOWN MEGGING THE MOTOR HANDLING REFRIGERANT FOR DISMANTLING AND REPAIRSLD00476 Open MotorsGENERAL CLEANING COOLER AND CONDENSER TUBESTUBE CLEANING PROCEDURES COMMERCIAL ACID CLEANINGTESTING FOR COOLER AND CONDENSER TUBE LEAKS ELECTRICAL CONTROLS COMPRESSORCOMPRESSOR MOTOR PRESSURE TESTINGSECTION COMPRESSORELECTRICAL CONTROLS Form 160.49-O21296 P.O. Box 1592, York, Pennsylvania USACopyright by York International Corporation ALL RIGHTS RESERVED