MGA3000/E1 Outdoor Telecom Cabinet with 3000W AC Power Supply, IP55 Rating, 220V

1.1. Preface

This manual introduces the guide for the installation, operation, function and routine maintenance of the cabinet air conditioner. Please read carefully the manual before using and follow the usage and note.

Note: All the operations of this product shall be performed by professional engineers.

1.2. Product introduction

The air conditioner is one kind of refrigeration product self-developed for cabinet. It is applicable in the place where the cabinet internal heat is very large, the internal electronic equipment is sensitive to the environment temperature and which should be isolated internally and externally completely. This product has multiple functions, high reliability, and has the feature that it can start to work without complex debugging after powering.

The fan in the internal cycle air path absorbs the hot air from the upside to make air heat exchange by evaporator fins, and sends the cooled air from the downside of the air conditioner. By so, the air in cabinet can cycle to achieve the purpose of lowering the temperature. Meanwhile, The fan in the external cycle air path absorbs the external cold air from the downside, and discharges the hot air from the upside after heat exchange.

2. Product parameter

 

2.1. Product technology parameters

 

Item	Name	Unit	Parameter
Dimension and installation	Body outline dimension (widthheightdepth)	mm	784*619*245
	Outline dimension including	mm	/
flange (widthheightdepth)	Weight	Kg	40
	Installation method		Floor Mounted
	Installation method		Outdoor
Environment and protection	Working environment temperature	°C	-40 to +55
	Noise	dB(A)	65
	Life expectancy	Years	>10
	IP grade		IP55
	Refrigerant		R134a
	ROHS certification		yes
	Input voltage range		220±15%VAC/50Hz
Performance	Refrigerating capacity (L35/L35)	W	3000
	Rated Refrigerating input power (L35/L35)	W	1280
	Rated Refrigerant current (L35/L35)	A	5.8
	Maximum Refrigerating current	A	8.5
	Heat capacity (optional)	W	1000
	Air volume of Inner Circulation	M3/h	900

 

 

 

2.2. Installation diagram

 

 

 

Note: the installation diagram is just for reference, the specific installation scheme should be determined according to the environment of the actual usage.

 

 

 

3. Preparation and installation

 

3.1. Removing package and checking

1. Please prepare installation tools: knife and scissors, and wear protective gloves.

2. Please remove wrapping film and packing belt, then remove the carton, take out the air conditioner.

3. Please check the attachment list and accessory bags in the carton, check whether the air conditioner model is right.

 

 

Notes:

 

1. After removing the outer package, please make sure that the air conditioner is placed upright , and not placed horizontally or upside down.

2. After removing the outer package, please check carefully whether the appearance of the air conditioner is damaged or oil polluted, if the appearance of the air conditioner has obvious deformation or oil stain, please contact the manufacturer in time.

3. If there is no need to install the product immediately or it needs to be transported to other place, please repack the air conditioner after the checking.

4. It is recommended to recycle the unpacking materials.

 

 

3.2. Mechanical installation

Installation tool: Phillips screwdriver

Installation Steps:

1) Choose cut location on the cabinet according to the holing diagram, remove the shadow area and make the installation hole.

2) Make air conditioner flange close to cabinet door, Fix the air conditioner on the installation surface of the cabinet firmly with M5 screws.

3) Check whether air conditioner is installed levelly and firmly.

Notes:

1) Check whether air conditioner drainage loop is smooth, in case that drainage is blocked.

2) When determine the location of the installation hole in the cabinet, you should avoid the inlet and outlet air ports inside the cabinet are not blocked by any components inside the cabinet, and the two should be kept a horizontal distance of more than 150mm; otherwise, it is prone to lead to r short circuit of the return air, and poor cooling effect, etc.;

3) Carrying or moving the air conditioner should be careful to avoid colliding it and scratching

its surface coating;

 

 

3.3. Electrical installation

 

(1) Power input port

 

Item	Port	Definition
Live	L	Power input cable L
Null	N	Power input cable N
Earth	PE	Earth line

 

 

(2) Alarm output and signal input port

 

Item	Port	Definition
+ RS485 communication interface	RS485A	RS485 communication ports (+)
- RS485 communication interface	RS485B	RS485 communication ports (-)
The public alarm dry nod (NO)	NO	It is normally open if no alarm
The public alarm dry nod (COM)	COM	Common port
The public alarm dry nod (NC)	NC	It is normally close if no alarm

 

 

 

4. Product function

 

4.1. Cooling

 

When the temperature inside cabinet is higher than refrigeration starting temperature, it starts refrigerating; when the temperature inside cabinet is lower than refrigeration stopping temperature, it stops refrigerating.

 

Parameter	Default value	Setting range	Unit	Note
Refrigeration starting temperature	32	[20~40]	°C	Refrigeration stopping temperature = Refrigeration starting temperature - Refrigeration return difference
Refrigeration return difference	5	[3~10]	°C

 

 

 

4.2. Heating(Optional)

 

When the temperature inside cabinet is lower than heating starting temperature, it starts heating;

when the temperature inside cabinet is higher than heating stopping temperature, it stops heating.

 

Parameter	Default value	Setting range	Unit	Note
Heating starting temperature	5	[-10~15]	°C	Heating stopping temperature = Heating starting temperature + Heating return difference
Heating return difference	10	[3~15]	°C

 

 

4.3. Remote monitor

 

Air conditioner has an RS485 communication interface, supporting MODBUS- RTU communication protocol.The air conditioner communicates with the upper monitor through the RS485 communication interface. Or users can check the air conditioner’s running state by viewing the display screen directly and change its running parameters.

 

4.4. The control of external fan (Optional)

 

According to the optional requirement, the external fan (Hydrogen discharge / emergency fan)19 automatically realizes cycle hydrogen discharging and emergency ventilation function.

Hydrogen discharge function(Optional):When hydrogen discharge cycle comes, air conditioner start the hydrogen discharge fan, the control switch closes.

 

Parameter	Default value	Setting range	Unit
Cycle	24	[0~72]	h
Discharging time	5	[0~10]	Min

 

 

 

Parameter	Default value	Setting range	Unit
Starting temperature	45	[28~50]	°C
Stopping temperature	42	[25~50]	°C

 

 

 

5. Display screen

 

5.1. Display interface

 

NO.	Icon	Function	Function explanation
1	❄️	Refrigerating running	Indicate whether refrigerating runs or not