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Midea MGA-F65W/SN1

Midea MGA-F65W/SN1
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MCAC-2008-11 Air-cooled Modular Chiller
1
Contents
1. Nomenclature…………..………………………………………………...
2. Product Schedule………………………………………………………..
3. Features…………………………………………………………………...
4. Specification……………………………………………………………...
5. Dimension…………………………………………………………………
6. Piping Diagrams & Pipe Connection Drawing……………………...
7. Wiring Diagrams……………………….………………………………..
8. Electric Characteristics…………………………………………….......
9. Capacity Tables…………………………………………………………
10. Exploded View………………………………………………………….
11. Troubleshooting……………..…………………………………………
12. Installation……………………………..………………………………..
13. Debugging...…………………………..………………………………
14. Maintenance…..…………………………..……………………………
15. Control……………………………..…………………………………….
※ Manufacture reserves the right to discontinue, or change at any time, specifications or designs without
notices and without incurring obligations.

Table of Contents

Questions and Answers:

Midea MGA-F65W/SN1 Specifications

General IconGeneral
Cooling Capacity65 kW
RefrigerantR410A
Noise Level65 dB(A)
TypeAir-cooled chiller
Power Supply380-415V/3Ph/50Hz

Summary

1. Nomenclature

2. Product Schedule

3. Features

4. Specification

5. Dimension

6. Piping Diagrams & Pipe Connection Drawing

6.1 Refrigeration System Diagrams

Diagrams illustrating refrigeration systems for 30kW and 65kW modules.

6.3 Water Pipe Sketch for 30 kW System

Diagram showing water pipe connections for the 30kW module unit system.

6.4 Water Pipe Sketch for 65 kW System

6.5 Unit Combination System Diagram

Diagram of unit combination system for 30kW and 65kW modules.

6.6 Auxiliary Electric Heater Installation Diagram

7. Wiring Diagrams

7.1 Outdoor Wiring Diagram for Main Unit

Outdoor wiring diagram for MGA-F(D)30W/SN1 & MGA-F(D)65W/SN1 main units.

7.2 Outdoor Wiring Diagram for Auxiliary Unit

8. Electric Characteristics

9. Capacity Tables

9.1 Cooling Capacity Tables

Tables detailing cooling capacity based on ambient and water temperatures.

9.2 Heating Capacity Tables

10. Exploded View

10.1 MGA-F30 WSN1 Exploded View

Exploded view of the MGA-F30W/SN1 module, showing part identification.

10.2 MGA-F65 WSN1 Exploded View

10.3 MGA-D30 WSN1 Exploded View

Exploded view of the MGA-D30W/SN1 module, showing part identification.

10.4 MGA-D65 WSN1 Exploded View

11. Troubleshooting

11.1 Failure & Protection Codes

List of module failure and protection codes with their descriptions.

11.2 Troubles and Solutions

12. Installation

12.1 Unit Installation

Guidelines for unit installation, including transportation and placement.

12.1.2 Required Installation Place

Details on selecting an appropriate installation location for the unit.

12.1.3 Installation Foundation

Requirements for the unit's installation foundation and base.

12.1.4 Operation Limits

Specifies voltage and temperature ranges for unit operation.

12.2 Water System Installation

12.3 Wiring Installation

12.3.1 Precautions

Important safety and installation precautions for wiring.

12.3.2 Wiring Specification

Specifications for common wiring types and their descriptions.

12.3.2 Wiring Specification (cont.)

12.3.2 Wiring Specification (cont.)

Specifications for common wiring types and their descriptions.

12.3.2 Wiring Specification (cont.)

Specifications for common wiring types and their descriptions.

12.3.2 Wiring Specification (cont.)

Specifications for common wiring types and their descriptions.

Appendix 1: Unit electric control & communication figure (for 30 kW module)

Appendix 2: Unit electric control & communication figure (for 65 kW module)

13. Testing

13.1 Preparation

Steps for preparing the unit before testing, including setting address switches.

13.2 Testing

14. Maintenance

14.1 Maintenance Precautions

General precautions and warnings for maintaining the unit.

14.1.1 Maintenance for Main Components

Guidance on maintaining key components of the unit.

14.1.2 Descaling Procedure

Procedure for descaling the water side heat exchanger.

14.1.3 Winter Shutdown and Startup Procedures

14.1.3.1 Winter Shutdown Procedure

Instructions for shutting down the unit during winter.

14.1.3.2 First Start After Unit Stops

Steps for restarting the unit after a period of inactivity.

14.1.3.3 Refrigeration System Maintenance

Procedures for handling refrigerant, including charging and leak testing.

14.1.3.4 Compressor Removal

Steps for safely removing the compressor from the unit.

14.1.3.5 Auxiliary Electric Heater

Information on selecting and using auxiliary electric heaters.

14.1.3.6 System Anti-freeze

Measures to prevent freezing in the system, especially in low temperatures.

15. Control System

15.1 PCB Outline and Description

Overview and description of the PCB components for 30kW & 65kW modules.

15.1.2 Components Description (30 kW & 65 kW Module)

Detailed description of components on the 30kW and 65kW module PCBs.

15.1.2 Components Description (cont.)

15.1.3 Unit Addressing, Communication Ports, and System Protection

Details on unit addressing, communication ports, and system protection functions.

15.1.3 System Protection and Control Features

15.1.3 Anti-frost Protection Sensor

Details on the anti-frost protection sensor.

15.1.3 Water Flow Check

Troubleshooting water flow issues and related error codes.

15.1.3 Electric Expansion Valves (EXV)

Information on System A and B Electric Expansion Valves.

15.1.3 Auxiliary Systems (Heater & Pump)

Control and operation of auxiliary heater and water pump.

15.1.3 Compressor and Display Details

Information on compressors, digital tube display, and fan control.

15.1.3 Power and Input Specifications

Details on PWM, transformer input, and three-phase power supply.

15.2 Failure & Protection Codes

15.3 Controllers

15.3.1 Wired Controller: KJR-08 BBE

Description and operation of the wired controller.

15.3.1 Wired Controller Operation (cont.)

Wired Controller LCD Screen Description

Description of the wired controller's LCD screen and its functions.

Installation Procedure

Steps for installing the wired controller and its connections.

Wired Controller Operation Procedures

Information Query Procedures

How to query unit and system information using the wired controller.

Water Temperature Setting & Fault Handling

Setting water temperature and handling fault alarms with the controller.

15.3.2 CCM10 LCD Touch Screen (Optional)

Mechanical Installation

Instructions for the mechanical installation of the LCD touch screen.

Electrical Installation

LCD Touch Screen Operation Description

Base conditions and functions of the LCD touch screen controller.

LCD Control System Function

Description of the LCD control system's overall function.

LCD Interface Navigation

LCD Query Window Usage

Accessing and using the query window on the LCD touch screen.

LCD Setting Window Usage

Accessing and using the LCD setting window.

LCD Functionality and Settings

Malfunction and Error History Query

Querying malfunctions and viewing error history on the LCD.

Weekly Timer Setting

Window for setting the weekly timer schedule on the LCD.

LCD Control and Operation Modes

Electricity Control Function Description

Description of electricity control functions on the LCD.

LCD Query Function Details

Detailed explanation of the LCD's query function.

LCD Mode Setting Function

How to set the operation mode and control mode on the LCD.

LCD Mode Setting and Locking Functions

LCD Mode Setting and Locking Functions (cont.)

Continued mode settings, locking, Run/Stop, Temp. Set, and communication.

LCD Operation Modes and Alarms

Operation & Control Mode Setting (cont.)

Further details on operation and control mode settings and malfunction alarms.

Power Failure Memory & Timing Functions

Information on power failure memory and timing ON/OFF functions.

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