MODEL YK (STYLE E) R-134a COOLING ONLY WITH …

1 MAXE TM. centrifugal liquid CHILLERS. OPERATING & MAINTENANCE Supersedes: NOTHING Form (1102). MODEL YK ( style e ). R- 134a COOLING only . with OPTIVIEW TM CONTROL CENTER. FOR ELECTRO-MECHANICAL STARTER, SOLID STATE STARTER & VARIABLE SPEED DRIVE. 00611 VIP. LDO5842. FORM (1102). IMPORTANT! READ BEFORE PROCEEDING! GENERAL SAFETY GUIDELINES. This equipment is a relatively complicated apparatus. as severe personal injury or death to themselves and During installation, operation, maintenance or service, people at the site. individuals may be exposed to certain components or conditions including, but not limited to: refrigerants, This document is intended for use by owner-authorized oils, materials under pressure, rotating components, operating/service personnel.

2 It is expected that this in- and both high and low voltage. Each of these items dividual possesses independent training that will enable has the potential, if misused or handled improperly, them to perform their assigned tasks properly and safely. to cause bodily injury or death. It is the obligation It is essential that, prior to performing any task on this and responsibility of operating/service personnel to equipment, this individual shall have read and under- identify and recognize these inherent hazards, protect stood this document and any referenced materials. This themselves, and proceed safely in completing their individual shall also be familiar with and comply with tasks. Failure to comply with any of these require- all applicable governmental standards and regulations ments could result in serious damage to the equip- pertaining to the task in question.

3 Ment and the property in which it is situated, as well SAFETY SYMBOLS. The following symbols are used in this document to alert the reader to areas of potential hazard: DANGER indicates an imminently CAUTION identifies a hazard which hazardous situation which, if not could lead to damage to the machine, avoided, will result in death or serious damage to other equipment and/or injury. environmental pollution. Usually an instruction will be given, together with a brief explanation. WARNING indicates a potentially NOTE is used to highlight additional hazardous situation which, if not information which may be helpful to avoided, could result in death or se- you. rious injury. External wiring, unless specified as an optional connection in the manufacturer's product line, is NOT to be connected inside the micro panel cabinet.

4 Devices such as relays, switches, transducers and controls may NOT be installed inside the micro panel. NO external wiring is allowed to be run through the micro panel. All wiring must be in accordance with YORK's published specifications and must be performed only by qualified YORK personnel. YORK. will not be responsible for damages/problems resulting from improper connections to the controls or application of improper control signals. Failure to follow this will void the manufacturer's warranty and cause serious damage to property or injury to persons. 2 YORK INTERNATIONAL. FORM (1102). CHANGEABILITY OF THIS DOCUMENT. In complying with YORK's policy for continuous It is the responsibility of operating/service person- product improvement, the information contained in nel as to the applicability of these documents to the this document is subject to change without notice.

5 Equipment in question. If there is any question in the While YORK makes no commitment to update or mind of operating/service personnel as to the appli- provide current information automatically to the cability of these documents, then, prior to working manual owner, that information, if applicable, can be on the equipment, they should verify with the owner obtained by contacting the nearest YORK Applied whether the equipment has been modified and if cur- Systems Service office. rent literature is available. REFERENCE INSTRUCTIONS. DESCRIPTION FORM NO. SOLID STATE STARTER (MOD A ) OPERATION & MAINTENANCE SOLID STATE STARTER (MOD B ) OPERATION & MAINTENANCE VARIABLE SPEED DRIVE OPERATION VARIABLE SPEED DRIVE SERVICE INSTRUCTIONS INSTALLATION OPTIVIEW CONTROL CENTER - SERVICE INSTRUCTIONS 160-54-M1.

6 WIRING DIAGRAM UNIT with ELECTRO-MECHANICAL STARTER WIRING DIAGRAM UNIT with MOD A SOLID STATE STARTER WIRING DIAGRAM UNIT with MOD B SOLID STATE STARTER WIRING DIAGRAM UNIT with VARIABLE SPEED DRIVE RENEWAL PARTS UNIT RENEWAL PARTS OPTIVIEW CONTROL CENTER WIRING DIAGRAM UNIT (P Compressors) with ELECTRO-MECHANICAL STARTER WIRING DIAGRAM UNIT (P Compressors) with MOD B SOLID STATE STARTER WIRING DIAGRAM UNIT (P Compressors) with VARIABLE SPEED DRIVE OPTIVIEW PANEL - OPERATION & MAINTENANCE NOMENCLATURE. YK CB CB G4 CM E. DESIGN LEVEL (E). MOTOR CODE. 60 Hz 50 Hz POWER SUPPLY. CH CX 5CE 5CT. for 60 Hz CJ CY 5CF 5CU. 5 for 50 Hz CK CZ 5CG 5CV. CL CA 5CH 5CW. COMPRESSOR CODE. CM CB 5CI 5CX. G4, H0, H1, H2, H3, H4, H5. CN DA 5CJ 5DA. H6, H8, J1, J2, J3, J4, P1, P2, CP DB 5CK 5DB.

7 P3, P4, P5, P6, P7. CR DC 5CL 5DC. CONDENSER CODE. CS DD 5CM 5DD. AB, AC, AD, BB, BC, BD, CR, CG, CH, DF, DG, CT DE 5CN 5DE. DH CB, CC, CD, DB, DC, DD, EB, EC, ED, FB, CU DF 5CO 5DF. FC, FD, GB, GC, GD, HB, HC, HD, JB, JC, JD, CV DH 5CP 5DG. TB, TC, TD, VB, VC, VD. CW DJ 5CQ 5DH. EVAPORATOR CODE. CF CG 5CR 5OJ. AB, AC, AD, BB, BC, BD, CR, CG, CH, DF, DG, DH. 5CS. MODEL CB, CC, CD, CE, DB, DC, DD, DE, FB, FC, FD. GB, GC, GD, GF, GH, HB, HC, HF, HH, JF, JG. JH, TF, TG, TH, VF, VH, WF, WH. YORK INTERNATIONAL 3. FORM (1102). TABLE OF CONTENTS. SECTION 1 Description of System and Fundamentals of 7. SECTION 2 System Operating Procedures .. 9. SECTION 3 System Components Description .. 15. SECTION 4 Operational Maintenance .. 21. SECTION 5 23.

8 SECTION 6 Maintenance .. 25. SECTION 7 Preventive Maintenance .. 34. 4 YORK INTERNATIONAL. FORM (1102). LIST OF FIGURES. FIG. 1 MODEL YK MAXE TM CHILLER .. 7. DETAIL A COMPRESSOR PREROTATION. 8. FIG. 2 REFRIGERANT FLOW-THROUGH CHILLER .. 9. FIG. 3 CHILLER STARTING SEQUENCE &. SHUTDOWN SEQUENCE. (EM STARTER & SOLID STATE STARTER).. 10. FIG. 4 CHILLER STARTING SEQUENCE &. SHUTDOWN SEQUENCE. (VARIABLE SPEED DRIVE)..11. FIG. 5 liquid CHILLER LOG SHEETS .. 12. FIG. 6 SYSTEM COMPONENTS .. 15. FIG. 7 SCHEMATIC DRAWING (YK) COMPRESSOR. LUBRICATION 16. FIG. 8 OIL RETURN SYSTEM .. 18. FIG. 9 CHARGING OIL RESERVOIR with OIL .. 21. FIG. 10 EVACUATION OF CHILLER .. 22. FIG. 11 SYSTEM 25. FIG. 12 SATURATION CURVE .. 27. FIG. 13 DIAGRAM - MEGGING MOTOR WINDINGS.

9 29. FIG. 14 MOTOR STATOR TEMPERATURE &. INSULATION RESISTANCE .. 30. YORK INTERNATIONAL 5. FORM (1102). SECTION 1. DESCRIPTION OF SYSTEM AND FUNDAMENTALS OF OPERATION. COMPRESSOR. CONTROL. CENTER MOTOR. CONDENSER. 00116vip FIG. 1 MODEL YK MAXE TM CHILLER EVAPORATOR. SYSTEM OPERATION DESCRIPTION (SEE FIG. 2) starter, YORK Solid State Starter (optional), or Vari- able Speed Drive (optional). The YORK MODEL YK MaxE TM Chiller is commonly There could be either of two different Solid State applied to large air conditioning systems, but may be Starters applied. Later production chillers are used on other applications. The chiller consists of an equipped with the Mod B Solid State Starter. This open motor mounted to a compressor ( with integral starter contains a combination Logic/trigger Board speed increasing gears), condenser, evaporator and vari- that interfaces the Control Center with a serial com- able flow control.

10 Munications link. Earlier vintage chillers are equipped with the Mod A Solid State Starter. This starter con- The chiller is controlled by a modern state of the tains a Trigger Board that interfaces to a Logic Board art Microcomputer Control Center that monitors its that is installed inside of the Control Center. operation. The Control Center is programmed by the operator to suit job specifications. Automatic timed start-ups and shutdowns are also programmable to Chillers that are equipped with P Compressors have suit nighttime, weekends, and holidays. The operating certain component variances. These variances are status, temperatures, pressures, and other information noted in the appropriate sections of this book. They pertinent to operation of the chiller are automatically have a different Condenser High Pressure Safety displayed and read on a graphic display.