Material

CENTRIFUGAL LIQUID CHILLERS OPERATING & MAINTENANCE
Supersedes: Nothing Form 160.52-O1 (898)

MILLENNIUM

TM

MODEL YK (STYLE D) 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

28815A

WARNING
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 ACCORDANCE WITH YORK INSTALLATION/OPERATION MANUAL.

TABLE OF CONTENTS
Page

SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 SECTION 7 SECTION 8

– – – – – – – –

Description of System and Fundamentals of Operation ......................................... 4 MicroComputer Control Center ...................................... 6 System Operating Procedures ..................................... 31 System Component Description ................................... 38 Operational Maintenance ............................................. 43 Trouble Shooting .......................................................... 45 Maintenance ................................................................. 50 Preventive Maintenance ............................................... 59

REFERENCE INSTRUCTIONS
DESCRIPTION Solid State Starter – Operation & Maintenance Variable Speed Drive – Operation Installation Wiring Diagram – Unit with Electro-Mechanical Starter Wiring Diagram – Unit with Solid State Starter Wiring Diagram – Unit with Variable Speed Drive FORM NO. 160.46-OM3.1 160.00-O1 160.52-N1 160.52-PW1 160.52-PW2 160.52-PW3

2

YORK INTERNATIONAL

FORM 160.52-O1

NOMENCLATURE

YK

CB

CB

G4

–

CM

D DESIGN LEVEL (D) POWER SUPPLY – for 60 HZ 5 for 50 HZ

{

COMPRESSOR CODE G4, H0, H1, H2, H3, H4, H5, H6, H8, J1, J2, J3, J4 CONDENSER CODE CB, CC, CD, DB, DC, DD, EB, EC, ED, FB, FC, FD, GB, GC,