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York YK Series - User Manual

York YK Series
220 pages
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LD15222
MODEL YK (THROUGH STYLE G)
R-134a COOLING ONLY
WITH OPTIVIEW™ CONTROL CENTER
FOR ELECTRO-MECHANICAL STARTER,
SOLID STATE STARTER AND VARIABLE SPEED DRIVE
OPTIVIEW™ CONTROL CENTER
CENTRIFUGAL LIQUID CHILLERS
OPERATION MANUAL Supersedes: 160.54-O1 (1013) Form 160.54-O1 (914)
Issue Date:
September 10, 2014

Table of Contents

Other manuals for York YK Series

Preview: Operation And Maintenance
Operation And Maintenance38 pages
Preview: Installation Guide
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Questions and Answers

  • K
    Karl NelsonAug 15, 2025
    Why is the discharge pressure abnormally high in my York Chiller?
    • T
      Tara JohnsonAug 15, 2025
      Abnormally high discharge pressure in your York Chiller can be caused by several factors. It could be due to air in the condenser, dirty or scaled condenser tubes (in which case you should clean the condenser tubes and check water conditioning), high condenser water temperature (reduce condenser water inlet temperature, checking the cooling tower and water circulation), or insufficient condensing water flow (increase the quantity of water through the condenser to the proper value).
  • J
    James CookAug 18, 2025
    What to do if my York YK Chiller has abnormally low suction pressure?
    • K
      Karl GriffithAug 18, 2025
      If your York Chiller has abnormally low suction pressure, it could be due to several reasons. It might be caused by an insufficient charge of refrigerant (check for leaks and charge refrigerant into the system), a variable orifice problem (remove obstruction), evaporator tubes being dirty or restricted (clean evaporator tubes), or insufficient load for system capacity (check prerotation vane motor operation and setting of low water temperature cutout).
  • R
    Richard NovakAug 21, 2025
    What to do if oil pump vibrates in York YK?
    • J
      Jennifer ReedAug 21, 2025
      If your York Chiller's oil pump vibrates or is noisy, it could be due to insufficient oil reaching the pump suction inlet (check oil level) or a worn or failed oil pump (repair/replace the oil pump).
  • K
    Kimberly ReedAug 25, 2025
    How to fix high evaporator pressure in York YK?
    • B
      Benjamin ClaytonAug 25, 2025
      High evaporator pressure in your York Chiller can be caused by prerotation vanes failing to open (check the prerotation vane motor positioning circuit) or system overload (ensure the vanes are wide open, without overloading the motor, until the load decreases).
  • V
    victoriabondAug 27, 2025
    What causes reduced oil pump capacity in York YK?
    • R
      Robin BrownAug 27, 2025
      Reduced oil pump capacity in your York Chiller can stem from excessive end clearance in the pump or other worn pump parts (inspect and replace worn parts), or a partially blocked oil supply inlet (check the oil inlet for blockage).
  • G
    Gina MorrowAug 30, 2025
    What to do if the York YK oil pressure system ceases to return an oil/refrigerant sample?
    • S
      Sean ThompsonAug 30, 2025
      If the York Chiller oil pressure system ceases to return an oil/refrigerant sample, it may be due to a dirty filter-drier in the oil return system (replace the old filter-drier with a new one) or a clogged jet or orifice of the oil return jet (remove the jet, inspect for dirt, remove dirt using solvent, and replace).
  • N
    Nicole DillonSep 2, 2025
    Why does the oil pressure gradually decrease in my York YK Chiller?
    • B
      bmccannSep 2, 2025
      If the oil pressure in your York Chiller gradually decreases, as noted by observation of daily log sheets, it is likely that the oil filter is dirty. You should change the oil filter.
  • J
    johnsonwilliamSep 5, 2025
    What causes unusually high oil pressure in York Chiller?
    • J
      Joseph LucasSep 5, 2025
      Unusually high oil pressure that develops when the oil pump runs in your York Chiller might be caused by a defective high oil pressure transducer. Replace the low or high oil pressure transducer.
  • E
    Ernest JacksonSep 8, 2025
    What to do if York YK oil pump fails to deliver oil pressure?
    • J
      Jennifer JohnsonSep 8, 2025
      If the oil pump fails to deliver oil pressure in your York Chiller, it could be due to a faulty oil pressure transducer or faulty wiring/connectors. Replace the oil pressure transducer.
  • X
    xwilliamsSep 12, 2025
    What to do if there is no oil pressure when system start button is pushed on York Chiller?
    • M
      Matthew CortezSep 12, 2025
      If there is no oil pressure when the system start button is pushed on your York Chiller, it could be because the oil pump is running in the wrong direction (check the rotation of the oil pump) or the oil pump is not running (troubleshoot the electrical problem with the oil pump VSD).

Summary

IMPORTANT! READ BEFORE PROCEEDING!

GENERAL SAFETY GUIDELINES

Details general safety rules for operating and servicing the equipment.

SAFETY SYMBOLS

SECTION 1 - DESCRIPTION OF SYSTEM AND FUNDAMENTALS OF OPERATION

SYSTEM OPERATION DESCRIPTION

Details the components and operation of the YORK Model YK Chiller.

CAPACITY CONTROL

Explains how the chiller maintains capacity through mechanisms like Pre-rotation Vanes.

SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION

HEAT RECOVERY SCREEN

HEAD PRESSURE CONTROL SCREEN

HEAT PUMP SCREEN

REFRIGERANT LEVEL CONTROL SCREEN (FLASH MEMORY CARD VERSIONS C.MLM.01.06.XXX AND EARLIER)

REFRIGERANT LEVEL CONTROL SCREEN (SOFTWARE VERSION C.MLM.01.07.XXX TO C.MLM.01.10 D.XXX OR C.OPT.01.10 D (AND EARLIER))

REFRIGERANT LEVEL CONTROL SETPOINTS SCREEN (SOFTWARE VERSION C.MLM.01.07.XXX TO C.MLM.01.10 D.XXX OR C.OPT.01.10 D (AND EARLIER))

REFRIGERANT LEVEL CONTROL SCREEN (SOFTWARE VERSIONS C.MLM.01.14.XXX AND LATER OR C.OPT.01.14.306 AND LATER)

COMPRESSOR SCREEN (ALL “P” COMPRESSORS AND STYLE F AND LATER CHILLERS WITH G, Q OR H5-8 COMPRESSORS)

COMPRESSOR SCREEN (STYLE E AND EARLIER CHILLERS WITH G, H, OR J COMPRESSORS AND STYLE G CHILLERS WITH K COMPRESSORS)

PROXIMITY PROBE CALIBRATION SCREEN

HOT GAS BYPASS SCREEN

SURGE PROTECTION SCREEN

VARIABLE GEOMETRY DIFFUSER SCREEN

VARIABLE GEOMETRY DIFFUSER SETPOINTS SCREEN

PRE-ROTATION VANES CALIBRATION SCREEN

VSD TUNING SCREEN

OIL SUMP SCREEN

ELECTRO-MECHANICAL STARTER SCREEN

MOD “A” SOLID STATE STARTER SCREEN

MOD “B” SOLID STATE STARTER SCREEN

MEDIUM VOLTAGE SOLID STATE STARTER SCREEN

VARIABLE SPEED DRIVE SCREEN

MEDIUM VOLTAGE VARIABLE SPEED DRIVE SCREEN (SOFTWARE VERSION C.OPT.01.16.XXX AND LATER)

VARIABLE SPEED DRIVE (VSD) DETAILS SCREEN (STYLE D VSD AND VSD WITH PART NUMBER 371-03789-XXX (503 HP 60 HZ; 410 HP 50 HZ))

VARIABLE SPEED DRIVE (VSD) DETAILS SCREEN (VSD WITH PART NUMBER 371-02767-XXX (60 HZ) OR 371-03700-XXX (50 HZ))

ADAPTIVE CAPACITY CONTROL DETAILS SCREEN (SOFTWARE VERSION C.OPT.01.18.307 AND EARLIER) (VSD AND MV VSD)

ADAPTIVE CAPACITY CONTROL DETAILS SCREEN YORK PROTOCOL CONFIGURATION (SOFTWARE VERSION C.OPT.01.19.307 AND LATER)

ADAPTIVE CAPACITY CONTROL DETAILS SCREEN MODBUS PROTOCOL CONFIGURATION (SOFTWARE VERSION C.OPT.01.19.307 AND LATER)

SURGE MAP SCREEN - TABLE VIEW (SOFTWARE VERSION C.OPT.01.19.307 AND LATER)

SURGE MAP SCREEN - LIST VIEW (SOFTWARE VERSION C.OPT.01.19.307 AND LATER)

HARMONIC FILTER DETAILS SCREEN (STYLE D VSD AND VSD WITH PART NUMBER 371-03789-XXX (503 HP 60 HZ; 419 HP 50 HZ)

MOTOR LUBRICATION SCREEN

MOTOR DETAILS SCREEN (SOFTWARE VERSION C.OPT.01.22.307 AND LATER)

MOTOR SETPOINTS SCREEN (SOFTWARE VERSION C.OPT.01.22.307 AND LATER)

SETPOINTS SCREEN

SETUP SCREEN

QUICK START SCREEN (SOFTWARE VERSION C.OPT.01.21.307 AND LATER)

SCHEDULE SCREEN

USER SCREEN

COMMS SCREEN

PRINTER SCREEN

SALES ORDER SCREEN

OPERATIONS SCREEN

HISTORY SCREEN

HISTORY DETAILS SCREEN

SECURITY LOG SCREEN

SECURITY LOG DETAILS SCREEN

CUSTOM VIEW SCREEN

CUSTOM VIEW SETUP SCREEN

TREND SCREEN

TREND SETUP SCREEN

SECTION 4 - PRINTING

PRINTING OVERVIEW

York YK Series Specifications

General IconGeneral
RefrigerantR-134a
EfficiencyHigh
ApplicationCommercial and Industrial
TypeWater-cooled
Frequency50/60 Hz

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