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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 Millennium Tm

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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MILLENNIUM TM

MILLENNIUM TM

CENTRIFUGAL LIQUID CHILLERS

OPERATING & MAINTENANCE	Supersedes: Nothing	Form 160.49-O2 (1296)

MODEL YK M3 M3 G4 THRU YK S6 S4 J2 (STYLE C)

R-22 (COOLING ONLY)

MODEL YK LB LB G4 THRU YK SE SC J4 (STYLE C)

R-134a (COOLING ONLY)

WITH MICROCOMPUTER CONTROL CENTER

PART #371-01200-010, 371-01200-011 & 371-01200-015

FOR ELECTRO-MECHANICAL STARTER,

SOLID STATE STARTER & VARIABLE SPEED DRIVE

27385A

W ARNING

SYSTEM CONTAINS REFRIGERANT UNDER PRESSURE.

SERIOUS INJURY COULD RESULT IF PROPER PROCEDURES ARE NOT

FOLLOWED WHEN SERVICING SYSTEM. ALL SERVICE WORK SHALL

BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN IN ACCOR-

DANCE WITH YORK INSTALLATION/OPERATION MANUAL.

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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 Millennium Tm, W Arning

FAQ

What refrigerant does the system use?

The system uses R-134a refrigerant for cooling only.

What types of starter options are available for the system?

The system is compatible with electro-mechanical starter, solid state starter, and variable speed drive options.

Who should perform service work on the system?

All service work should be performed by a qualified service technician in accordance with the York installation/operation manual to ensure safety.

Contents

W ARNING MILLENNIUM TMREFERENCE INSTRUCTIONS TABLE OF CONTENTSDESCRIPTION FORM NOR-22UNITS NOMENCLATURER-134a SYSTEM OPERATION DESCRIPTION See Fig SECTIONCAPACITY CONTROL FIG. 3 - MICROCOMPUTER CONTROL CENTER AND KEYPAD SECTION MICROCOMPUTER CONTROL CENTERINTRODUCTION OPERATION CONTROL CENTERDISPLAYING SYSTEM PARAMETERS To Display REFRIGERANT PRESSURE To Display CHILLED LIQUID TEMPERATURESTo Display OIL PRESSURE To Display SSS MOTOR CURRENT / VOLTSTo Display MOTOR CURRENT is displayedTo Display OPERATING HOURS and STARTS COUNTER SYSTEM SETPOINTSPage DISPLAYING SYSTEM SETPOINTS Solid State Starter Applications Only To Display REMOTE RESET TEMP RANGE Setpoint1.Press ACCESS CODE key PROGRAMMINGTHE MICROCOMPUTER CONTROL CENTER PROGRAMMING SYSTEM SETPOINTSSolid 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 JUMPER POSITION FUNCTIONSolid State Starter applications only Solid State Starter applications onlySolid State Starter applications only MON XX XX AM - HIGH SPEED DRAIN TEMP MON XX XX AM - AUX SAFETY SHUTDOWNMON XX XX AM - OPEN DRAIN TEMP THERMOCOUPLE MON XX XX AM - DC UNDERVOLTAGESTART-UPPROCEDURE fused disconnect switch to the starter orSECTION and remains energized as long as theCHILLER OPERATION SYSTEM STARTING & SHUTDOWN SEQUENCE Condenser Water Temperature ControlOPERATOR INITIATED OPERATING LOG SHEET CHECKING OPERATIONDaily OPERATING INSPECTIONS - See SectionWeekly QuarterlyNORMAL AND SAFETY SYSTEM SHUTDOWNS NEED FOR MAINTENANCE OR SERVICESAFETY SHUTDOWNS CYCLING SHUTDOWNSSTART-UPAFTER PROLONGED SHUTDOWN PROLONGED SHUTDOWNSYSTEM COMPONENTS DESCRIPTION SECTIONFRONT VIEW 27385ACOMPRESSOR GENERALCAPACITY CONTROL COMPRESSOR LUBRICATION SYSTEM See FigLD00951 MOTOR DRIVELINE OIL HEATERHEAT EXCHANGERS REFRIGERANT FLOW CONTROLSOLID STATE STARTER Optional MICROCOMPUTER CONTROL CENTER See SectionVARIABLE SPEED DRIVE Optional ACTUAL LEVEL = XXX% LEVEL SETP = XXX%SECTION OPERATIONAL MAINTENANCEOIL RETURN SYSTEM THE OIL CHARGE OIL CHARGING PROCEDURESECTION TROUBLESHOOTINGYORK INTERNATIONAL YORK INTERNATIONAL 2. SYMPTOM ABNORMALLY LOW SUCTION PRESSURE 1. SYMPTOM ABNORMALLY HIGH DISCHARGE PRESSURE3. SYMPTOM HIGH COOLER PRESSURE RESULTS11. SYMPTOM REDUCED OIL PUMP CAPACITY 7. SYMPTOM OIL PUMP VIBRATES OR IS NOISYRESULTS POSSIBLE CAUSESECTION LEAK TESTING DURING OPERATIONRENEWAL PARTS CHECKING SYSTEM FOR LEAKSVACUUM TESTING VACUUM DEHYDRATION CHECKING THE REFRIGERANT CHARGE REFRIGERANT CHARGINGDURING UNIT SHUTDOWN MEGGING THE MOTOR HANDLING REFRIGERANT FOR DISMANTLING AND REPAIRSLD00476 Open MotorsTUBE CLEANING PROCEDURES CLEANING COOLER AND CONDENSER TUBESCOMMERCIAL ACID CLEANING GENERALTESTING FOR COOLER AND CONDENSER TUBE LEAKS ELECTRICAL CONTROLS COMPRESSORSECTION PRESSURE TESTINGCOMPRESSOR COMPRESSOR MOTORELECTRICAL CONTROLS Copyright by York International Corporation P.O. Box 1592, York, Pennsylvania USAALL RIGHTS RESERVED Form 160.49-O21296