McQuay MAC 030 C User Manual

52 pages

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CMAC - C - 2004

Air-Cooled Mini Chiller

Models: MAC 030 C/CR

 MAC 035 C/CR

 MAC 040 C/CR

 MAC 050 C/CR

 MAC 065 C/CR

 MAC 070 C/CR



MAC 080 C/CR

MAC 100 C/CR

MAC 120 C/CR

MAC 150 C/CR

Questions and Answers:

L
lorigordonAug 1, 2025
What to do if McQuay MAC 030 C Chiller compressor does not start?
- C
  Christopher BeltranAug 1, 2025
  If the McQuay Chiller compressor doesn't start, several factors could be at play. First, check the power supply to ensure it's active. Also, inspect the fuses and circuit breakers; replace any blown fuses and reset breakers after fixing the underlying fault. A tripped safety mechanism could also halt the unit; identify the type of safety shutdown, correct the issue, and then restart. Loose wiring is another potential cause; check wire connections and tighten any loose terminal screws. If none of these resolves the issue, the compressor itself may be faulty, and you should contact your local dealer.
P
Pedro NobleAug 15, 2025
Why is my McQuay Chiller not cooling enough?
- K
  Kathy StoneAug 15, 2025
  If your McQuay Chiller isn't providing sufficient cooling, several factors could be responsible. Begin by checking the thermostat setting and reset it to a cooler temperature if it's set too high. Other potential causes, such as a dirty condenser coil, insufficient refrigerant, improper water flow rate, or contaminated water in the system, require contacting your local dealer. Also, make sure that there is no obstacle blocking air inlet or outlet of the unit, and remove it if there is any.

McQuay MAC 030 C Specifications

General

Brand	McQuay
Model	MAC 030 C
Category	Chiller
Language	English

Summary

Introduction

Nomenclature

Explains the model naming convention and its components.

Features

Superior Performance

Details superior performance attributes like high efficiency and rigorous testing.

Simple To Operate

Explains the ease of operation with intelligent microprocessor control.

Friendly Installation

Highlights design features for easy installation without site charging or brazing.

Safety Control

Describes safety features like pressure protection and overload protection.

All Weather

Details the unit's durability and design for all-weather conditions.

Simple To Maintain

Focuses on the unit's design for easy servicing and troubleshooting.

Three Color Appearance Available

Mentions optional color availability for aesthetic integration.

General Specification

Compressor

Specifies the use of efficient, reliable, and silent scroll compressors.

Air-Cooler Condenser

Describes the condenser coil construction for optimal heat exchange.

Condenser Fan Motor

Details the fan motor's direct drive and weatherproof design for reliable operation.

Evaporator

Explains the evaporator construction for high heat exchange efficiency.

Refrigerant Circuit

Describes the factory-sealed refrigerant circuit with a capillary tube.

Additional Safety Protection

Covers safety controls like pressure switches and crankcase heaters.

Controller

Installation and Connection

Guides on installing the indoor controller and connecting the wires.

Indoor LCD Controller Operation

Explains the controller's display, status indication, and error codes.

Specifications

Cooling Only Unit (50Hz)

Presents detailed specifications for 50Hz cooling-only models.

Cooling Only Unit (60Hz)

Presents detailed specifications for 60Hz cooling-only models.

Heat Pump Unit (50Hz)

Details specifications for 50Hz heat pump models.

Performance Characteristic Charts

Cooling Only Performance Data

Provides performance data charts for cooling-only units.

Heating Mode Performance Data

Offers performance data charts for heat pump units in heating mode.

Technical Data

Correction Factors With Glycol Use

Provides correction factors for glycol concentration in water.

Water Pressure Drop And Flow Rate

Lists water pressure drop and flow rate data for various models.

Outlines and Dimensions

MAC 030C(R) to 070C(R) Dimensions

Shows outlines and dimensions for MAC030C(R) to MAC070C(R) models.

MAC 080C(R) to 150C(R) Dimensions

Displays outlines and dimensions for MAC080C(R) to MAC150C(R) models.

Accessory Hydraulic Kit

Wiring Diagrams

MAC030/035C Wiring Diagram

Presents the wiring diagram for MAC030/035C models.

MAC030/035CR Wiring Diagram

Displays the wiring diagram for MAC030/035CR models.

MAC040/050C Wiring Diagram

Shows the wiring diagram for MAC040/050C models.

MAC040/050CR Wiring Diagram

Illustrates the wiring diagram for MAC040/050CR models.

MAC065C/070C Wiring Diagram

Provides the wiring diagram for MAC065C/070C models.

MAC065/070CR Wiring Diagram

Shows the wiring diagram for MAC065/070CR models.

MAC080C/100C Wiring Diagram

Presents the wiring diagram for MAC080C/100C models.

MAC080CR/100CR Wiring Diagram

Displays the wiring diagram for MAC080CR/100CR models.

MAC120C/150C Wiring Diagram

Shows the wiring diagram for MAC120C/150C models.

MAC120CR/150CR Wiring Diagram

Illustrates the wiring diagram for MAC120CR/150CR models.

Installation

Installation Notice

States that installation must be done by qualified personnel.

Location Selection Criteria

Discusses requirements for selecting an optimal installation location.

Delivery and Lifting

Mounting

Chilled Water Piping Installation

Instructions for insulating and installing chilled water piping correctly.

Hydraulic System Installation Schematic

Condensate Drainage Connection

Power Connection

Servicing and Maintenance

Servicing Procedures

Guidelines for performing servicing by qualified personnel.

Maintenance Recommendations

Recommendations for regular maintenance to ensure performance and durability.

Troubleshooting

Troubleshooting With Microprocessor

Schematic Diagram

Cooling Only Refrigerant Circuits

Illustrates refrigerant flow for various cooling-only MAC models.

Heat Pump Refrigerant Circuits

Depicts refrigerant flow for various MAC heat pump models.

Parts List and Exploded View

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McQuay MAC 030 C User Manual

Table of Contents

Questions and Answers:

McQuay MAC 030 C Specifications

Summary

Introduction

Nomenclature

Features

Superior Performance

Simple To Operate

Friendly Installation

Safety Control

All Weather

Simple To Maintain

Three Color Appearance Available

General Specification

Compressor

Air-Cooler Condenser

Condenser Fan Motor

Evaporator

Refrigerant Circuit

Additional Safety Protection

Controller

Installation and Connection

Indoor LCD Controller Operation

Specifications

Cooling Only Unit (50Hz)

Cooling Only Unit (60Hz)

Heat Pump Unit (50Hz)

Performance Characteristic Charts

Cooling Only Performance Data

Heating Mode Performance Data

Technical Data

Correction Factors With Glycol Use

Water Pressure Drop And Flow Rate

Outlines and Dimensions

MAC 030C(R) to 070C(R) Dimensions

MAC 080C(R) to 150C(R) Dimensions

Accessory Hydraulic Kit

Wiring Diagrams

MAC030/035C Wiring Diagram

MAC030/035CR Wiring Diagram

MAC040/050C Wiring Diagram

MAC040/050CR Wiring Diagram

MAC065C/070C Wiring Diagram

MAC065/070CR Wiring Diagram

MAC080C/100C Wiring Diagram

MAC080CR/100CR Wiring Diagram

MAC120C/150C Wiring Diagram

MAC120CR/150CR Wiring Diagram

Installation

Installation Notice

Location Selection Criteria

Delivery and Lifting

Mounting

Chilled Water Piping Installation

Hydraulic System Installation Schematic

Condensate Drainage Connection

Power Connection

Servicing and Maintenance

Servicing Procedures

Maintenance Recommendations

Troubleshooting

Troubleshooting With Microprocessor

Schematic Diagram

Cooling Only Refrigerant Circuits

Heat Pump Refrigerant Circuits

Parts List and Exploded View

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