Johnson Controls York YK

Other manuals for Johnson Controls York YK

Operation And Maintenance56 pages

Wiring Diagram34 pages

Installation Guide40 pages

Questions and Answers

N
Nicholas AlvarezAug 16, 2025
Why is the discharge pressure abnormally high in my Johnson Controls York YK?
- E
  Eric PetersenAug 16, 2025
  Abnormally high discharge pressure in your Johnson Controls Industrial Equipment can be due to several reasons. It could be that there is air in the condenser. Other potential causes include dirty or scaled condenser tubes, which would require cleaning the condenser tubes and checking the water conditioning. It may also be caused by high condenser water temperature, so reduce the condenser water inlet temperature and check the cooling tower and water circulation. Finally, insufficient condensing water flow could be the culprit; in this case, increase the quantity of water through the condenser to the proper value.
S
solsonAug 18, 2025
What to do if my Johnson Controls Industrial Equipment has abnormally low suction pressure?
- D
  Diane BrownAug 19, 2025
  If your Johnson Controls Industrial Equipment is showing abnormally low suction pressure, it could be due to a few reasons. First, there might be an insufficient charge of refrigerant; check for leaks and charge refrigerant into the system. It could also be a variable orifice problem, which requires removing the obstruction. Another cause may be dirty or restricted evaporator tubes, so clean the evaporator tubes. Finally, it might be due to insufficient load for system capacity, so check pre-rotation vane motor operation and setting of low water temperature cutout.
T
Tanya RobinsonAug 22, 2025
What causes high evaporator pressure in Johnson Controls York YK Industrial Equipment?
- C
  campbellluisAug 22, 2025
  High evaporator pressure in Johnson Controls Industrial Equipment could be due to pre-rotation vanes failing to open; in this case, check the pre-rotation vane motor positioning circuit. Alternatively, the system may be overloaded. Make sure the vanes are wide open (without overloading the motor) until the load decreases.
J
Jackie TaylorAug 26, 2025
What to do if the oil pump vibrates or is noisy in Johnson Controls Industrial Equipment?
- J
  Joshua MasseyAug 26, 2025
  If the oil pump in your Johnson Controls Industrial Equipment vibrates or is noisy, it could be because oil is not reaching the pump suction inlet in sufficient quantity; check the oil level. Another possibility is a worn or failed oil pump, which would require repairing or replacing the oil pump.
M
Mark Jackson DDSAug 27, 2025
Why does my Johnson Controls Industrial Equipment oil pressure gradually decrease?
- D
  Darrell GordonAug 28, 2025
  If the oil pressure in your Johnson Controls Industrial Equipment gradually decreases, it may be because the oil filter is dirty. You should change the oil filter.
M
michaelgarciaAug 31, 2025
How to fix reduced oil pump capacity in Johnson Controls York YK Industrial Equipment?
- D
  Devin JohnsonAug 31, 2025
  Reduced oil pump capacity in your Johnson Controls Industrial Equipment can stem from excessive end clearance in the pump or other worn pump parts. Inspect and replace worn parts. It might also be caused by a partially blocked oil supply inlet, so check the oil inlet for blockage.
E
esmithSep 3, 2025
What to do if the Johnson Controls Industrial Equipment oil pressure system doesn't return an oil/refrigerant sample?
- C
  Carolyn MartinSep 3, 2025
  If the oil pressure system in your Johnson Controls Industrial Equipment stops returning an oil/refrigerant sample, the filter-drier in the oil return system might be dirty. Replace the old filter-drier with a new one. Another potential cause is a clogged jet or orifice of the oil return jet. Remove the jet, inspect for dirt, remove the dirt using solvent, and then replace it.
M
Matthew SmallSep 6, 2025
What causes no oil pressure when system start button is pushed in Johnson Controls York YK Industrial Equipment?
- K
  kennethmartinSep 6, 2025
  If there's no oil pressure when the system start button is pushed in your Johnson Controls Industrial Equipment, it could be that the oil pump is running in the wrong direction; check the rotation of the oil pump. Alternatively, the oil pump might not be running at all; troubleshoot the electrical problem with the oil pump VSD.
K
karen06Sep 8, 2025
How to resolve unusually high oil pressure when oil pump runs in Johnson Controls York YK Industrial Equipment?
- S
  Steve BookerSep 9, 2025
  If unusually high oil pressure develops when the oil pump runs in your Johnson Controls Industrial Equipment, it could be due to a defective high oil pressure transducer. Replace the low or high oil pressure transducer.
E
erin20Sep 12, 2025
What to do if the oil pump fails to deliver oil pressure in Johnson Controls Industrial Equipment?
- B
  Brandi PatrickSep 12, 2025
  If the oil pump fails to deliver oil pressure in your Johnson Controls Industrial Equipment, it could be due to a faulty oil pressure transducer or faulty wiring/connectors. Replace the oil pressure transducer.

Summary

Supplier Information

Introduction and Product Overview

Introduction to York YK chillers and manual scope.

Warranty Information

York warranty terms, conditions, and claims process.

Safety Standards and Compliance

Safety standards, directives, and compliance.

User Safety Responsibilities

User responsibilities for safe operation and maintenance.

Manual Usage Guide

Guide to symbols and manual usage conventions.

Equipment Misuse Hazards

Hazards associated with improper equipment use.

Safety Labels and Symbols

Explanation of unit safety labels and symbols.

Material Safety Data

Safety data for refrigerants, oils, and materials.

Product Description

General Product Overview

Overview of the York YK Millennium™ Centrifugal Chiller.

Chiller Capacity Control Mechanisms

Mechanisms for controlling chiller capacity.

Compressor Unit Description

Description of the single-stage centrifugal compressor.

Compressor Lubrication System Details

Details of the compressor lubrication system components.

Compressor Motor Specifications

Specifications of the compressor motor.

OptiView Control Centre Features

Features and operation of the OptiView control centre.

Heat Exchanger Design

Construction and design of evaporator and condenser.

Refrigerant Flow Control System

System for controlling refrigerant flow to the evaporator.

Optional Features and Accessories

Description of optional features like service valves and bypass.

Model Nomenclature Guide

Guide to understanding the unit model designation.

Available Model Configurations

Table of available compressor, evaporator, and condenser combinations.

Transportation, Rigging and Storage

General Handling and Storage Guidelines

General guidelines for unit handling and storage.

Chiller Shipment Configurations

Available factory shipment forms for the chiller.

Unit Inspection and Damage Reporting

Procedures for inspecting shipments and reporting issues.

Safe Rigging and Lifting Guidelines

Safe methods for rigging and lifting the chiller unit.

Installation

Chiller Location and Site Requirements

Guidelines for selecting an appropriate installation location.

Motor Cooling and Ventilation

Ventilation requirements for the compressor motor.

Foundation and Mounting Pad Specifications

Specifications for the unit's foundation or mounting pad.

Required Installation Clearances

Required space around the unit for service access.

Rigging to Installation Location

Process for moving the unit to its installed position.

Isolator Pad Installation and Levelling

Installing vibration isolators and ensuring unit level.

Optional Spring Isolator Installation

Procedure for installing optional spring isolators.

Piping Connection Guidelines

General guidelines for connecting water and refrigerant piping.

Evaporator and Condenser Water Piping

Specifics on evaporator and condenser water piping.

Commissioning

Pre-Commissioning Checks and Preparation

Pre-commissioning checks before unit startup.

Initial Unit Start-up Procedure

Step-by-step guide for initial unit startup.

Operation

Oil Heater Operation and Control

Control and function of the oil heater.

Checking Oil Reservoir Level

Procedure for checking and maintaining oil level.

Chiller Start-up Sequence

Detailed steps for starting the chiller unit.

Normal Chiller Operating Procedures

How the chiller operates under various load conditions.

System Operating Log Sheet

Importance and use of recording operating parameters.

Operational Maintenance Checks

Checks to perform during normal operation for maintenance.

System Shutdown Procedures

Procedures for safely stopping the chiller.

Procedures for Prolonged Shutdown

Steps for preparing the unit for extended periods of non-operation.

Start-up After Extended Shutdown

Procedure for restarting the unit after a long shutdown.

Maintenance

Routine Maintenance and Inspections

Schedule and procedures for regular maintenance tasks.

Oil Return System Maintenance

Checking and maintaining the oil return system.

Oil Charging and Replacement

Procedures for adding or replacing compressor oil.

Refrigerant Charge Management

Checking, testing, and charging the refrigerant system.

Condenser and Evaporator Maintenance

Maintenance tasks for heat exchangers, including cleaning.

Compressor Maintenance

Key maintenance checks for the compressor assembly.

Compressor Motor Maintenance

Checks and services for the compressor motor.

Electrical Controls Inspection

Inspection of electrical controls for proper function.

Motor Winding Insulation Testing

Procedure for testing motor winding insulation resistance.

Troubleshooting

Common System Faults and Symptoms

Troubleshooting guide for common chiller faults and symptoms.

Technical Data

Unit Dimensions and Clearances

General unit dimensions and mounting clearances.

Evaporator Compact Water Box Dimensions

Dimensions for evaporator compact water boxes.

Evaporator Compact Water Box Nozzles

Nozzle configurations for evaporator compact water boxes.

Condenser Compact Water Box Dimensions

Dimensions for condenser compact water boxes.

Condenser Compact Water Box Nozzles

Nozzle configurations for condenser compact water boxes.

Evaporator Marine Water Box Dimensions

Dimensions for evaporator marine water boxes.

Condenser Marine Water Box Dimensions

Dimensions for condenser marine water boxes.

Unit Weight Specifications

Shipping and operating weight specifications for units.

Process and Instrumentation Diagram

Diagram illustrating system components and instrumentation.

Spare Parts

De-commissioning, Dismantling and Disposal

General De-commissioning Procedures

Procedures for safely removing and disposing of the unit.