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York YK-EP User Manual

York YK-EP
268 pages
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Form Number: 160.87-OM1 (920)
Supersedes: 160.87-OM1 (818)
Operations and Maintenance Manual
Issue Date: 2020-09-15
YK-EP Style B Centrifugal Chiller
R-134a, Cooling Only with OptiView Control Center, Solid
State Starter and Variable Speed Drive

Table of Contents

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York YK-EP Specifications

General IconGeneral
BrandYork
ModelYK-EP
CategoryChiller
LanguageEnglish

Summary

General Safety Guidelines

Safety Symbols

Explains symbols used to alert readers to specific situations and potential hazards.

System Overview and Nomenclature

Nomenclature and Model Identification

Details the alphanumeric code system used to identify chiller models, including compressor and power supply codes.

System Description and Operation

Describes the YK-EP Chiller system, its components, control center, and general operation.

Capacity Control Mechanisms

Explains how chiller capacity is managed, focusing on Pre-Rotation Vanes for load compensation.

OptiView Control Center Interface

Introduction and Interface Conventions

Introduces the OptiView Control Center, its display, interface conventions, and access levels.

Languages and Navigation

Details language options, screen navigation, and access information using defined keys.

Chiller Operational Screens

Core System Screens

Covers Home, System, Economizer, Evaporator, Condenser, and Compressor screens for monitoring.

Specialized Controls and Calibration

Details Economizer compressor, VGD, PRV calibration, VSD tuning, and related control screens.

Motor, Starter, and Drive Systems

Covers screens for various motor starters, drives (VSD/MVVSD), and motor monitoring functions.

System Configuration and Data Management

Covers setpoints, system setup, user management, communications, scheduling, and data logging.

Data Analysis and Reporting

Details trending capabilities, setup, common slots, and generating reports from history and logs.

Troubleshooting and Fault Management

Display Messages and Status Indicators

Explains status bar messages, details line messages, and message color coding for chiller states.

Shutdown and Warning Conditions

Details various shutdown and warning messages, their causes, and necessary procedures for clearing.

Service and Maintenance Procedures

OptiView Control Panel and Microboard Service

Covers OptiView control panel details, microboard replacement, and program card management.

Program Card and Download Procedures

Explains the process for downloading programs using a program card and handling precautions.

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