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McQuay PEH12

McQuay PEH12
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SINGLE COMPRESSOR CENTRIFUGAL CHILLERS
PEH/PHH
050,063,079,087,100,126
13600 Industrial Park Blvd.. P.O. Box 1551, Minneapolis, MN 55440
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McQuay PEH12 Specifications

General IconGeneral
BrandMcQuay
ModelPEH12
CategoryChiller
LanguageEnglish

Summary

Introduction and General Description

Operating Sequence and Control System

Protective Controls

Details safety controls preventing startup under adverse conditions or shutting down during abnormal/unsafe operations.

Safety Control Reset

Explains how safety controls lock out automatically when operating conditions exceed trip settings.

Control Center Components

Capacity Control System

Oil System

Chiller Operation Procedures

Preliminary Checks Before Starting

Lists routine checks before chiller startup to ensure all components are ready for operation.

Starting the Chiller

Provides step-by-step instructions for starting the chiller, including pump and compressor activation.

Maintenance Procedures

System Repair Procedures

Refrigerant Handling and Valves

Refrigerant Charging

Advises checking nameplate for refrigerant type and outlines precautions for charging the system.

Adjustments and Calibration

Current Limit Calibration

Provides a step-by-step guide for properly setting the control module's current limit feature.

Thermostat Settings

Troubleshooting Guide

All Lights Out

Provides troubleshooting steps for a control panel with no active indicator lights.

Motor Temperature Issues

Lists causes and solutions for motor temperature issues indicated by control panel lights.

Oil Pressure Faults

Guides troubleshooting for oil pressure faults indicated by control panel lights.

Oil Temperature Faults

Provides troubleshooting steps for oil temperature faults indicated by control panel lights.

Low Pressure Faults

Guides troubleshooting for low pressure faults indicated by control panel lights.

Compressor Not Running

Details troubleshooting steps for when the compressor fails to start or run.

Compressor Starter Overload Tripped

Outlines troubleshooting steps for a tripped compressor starter overload.

Compressor Will Not Load

Provides troubleshooting steps for when the compressor fails to load.

Compressor Will Not Unload

Details troubleshooting steps for when the compressor fails to unload.

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