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GB/T 2423.3-2016Environmental testing - Part 2: Testing method - Test Cab: Damp heat, steady state (English PDF)

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Issued by

Ministry of Industry and Information Technology of PRC 3. No action is required - Full-copy of this standard w

Level / Type

National · Recommended

Issue date

October 22, 2016

Implementation date

April 1, 2017

Scope

GB/T 2423.3-2016 (Environmental testing - Part 2: Testing method - Test Cab: Damp heat, steady state) is available as an English-translated PDF.

GB/T 2423.3-2016 - This standard specifies the safety technical requirements, operation procedures, and safety management for using flammable refrigerants in household and similar room air conditioner industry.

This standard applies to the production line design, production, transform, daily production and management of room air-conditioner products as defined in GB/T 7725, the mobile air-conditioners as defined in GB/T 22257 AND the dehumidifier as defined in GB/T 19411.

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Document preview — GB/T 2423.3-2016

National Standard of the People's Republic of China

ICS: 97.030

Issued by: Ministry of Industry and Information Technology of PRC 3. No action is required - Full-copy of this standard w

Foreword...3
1 Scope...4
2 Normative references...4
3 Terms and definitions...5
4 Dangerous area classification...6
5 General requirements of ventilation system...7
6 General requirements of gas detection and alarming system...9
7 General requirements of grounding system...11
8 Refrigerant storage...11
9 Filling...15
10 Sealing...17
11 Detection of refrigerant leakage...18
12 Product operation test room...19
13 Repair...20
14 Finished product storage...20
15 Plant...21
16 Safety management...21

Foreword

This standard was drafted in accordance with the rules of GB/T 1.1-2009.

This standard was proposed by the Federation of Light Industry.

This standard shall be under the jurisdiction of the National Household

Electrical Appliances Standardization Technical Committee (SAC/TC 46).

The drafting organizations of this standard. China Household Electrical

Appliances Association, Zhuhai Gree Electric Co., Ltd., Guangdong Media

Refrigeration Equipment Co., Ltd., Qingdao Haier Air Conditioner Limited

Company, TCL Air Conditioner (Zhongshan) Co., Ltd., Hisense Kelon Electric

Co., Ltd., China Light Industry Changsha Engineering Co., Ltd., Shanghai

Schenck Machinery Co., Ltd., Ulvac Eastern Vacuum (Chengdu) Co., Ltd.,

Ministry of Public Security Tianjin Fire Research Institute, Huazhong University

of Science and Technology, Ningbo Oaks Air Conditioning Co., Ltd.

1 Scope

This standard specifies the safety technical requirements, operation

procedures, and safety management for using flammable refrigerants in

household and similar room air conditioner industry.

This standard applies to the production line design, production, transform, daily

production and management of room air-conditioner products as defined in

GB/T 7725, the mobile air-conditioners as defined in GB/T 22257 AND the

dehumidifier as defined in GB/T 19411.

2 Normative references

The following documents are essential to the application of this document. For

the dated documents, only the versions with the dates indicated are applicable

to this document; for the undated documents, only the latest version (including

all the amendments) are applicable to this Standard.

GB 150 Pressure vessels (all parts)

GB 3836.1 Explosive atmospheres - Part 1. Equipment - General

requirements

GB 4208 Degrees of protection provided by enclosure (IP code)

GB 4706.32 Safety of household and similar electrical appliances -

Particular requirements for heat pumps, air-conditioner and dehumidifier

GB/T 7725 Room air conditioners

GB/T 7778 Number designation and safety classification of refrigerants

GB/T 8163-2008 Seamless steel tubes for liquid service

GB/T 19411 Dehumidifiers

GB/T 22257 General specification for mobile air conditioner

GB 50016 Code for design on building fire protection and prevention

GB 50058 Code for design of electrical installations in explosive

atmospheres

GB 50140 Code for design of extinguisher distribution in buildings

GB 50184 Code for acceptance of construction quality of industrial metallic

piping engineering

GB 50235 Code for construction of industrial metallic piping engineering

GB 50243-2002 Code of acceptance of construction quality of ventilation

and air conditioning

GB 50257 Code for construction and acceptance of electric equipment on

fire and explosion hazard electric equipment installation engineering

JT 617-2004 The regulation of automobile transportation of dangerous

goods

TSG R 7001-2013 Pressure vessels periodical inspection regulation

3 Terms and definitions

The terms and definitions as defined in GB/T 7725 and GB 4706.32 AND the

following terms and definitions apply to this document.

3.1

Flammable refrigerant

The refrigerant classified into type A2 and A3 in accordance with GB/T

7778.

3.2

Lower explosive limit, LEL

Under the temperature of 23 °C and the atmospheric pressure of 101325

Pa, the minimum concentration of the flammable gas when its mixture with

air can produce explosion in encountering fire source.

3.3

Mechanical ventilation

5.2.1 The ventilation equipment shall comply with the relevant requirements of

GB 3836.1 AND shall have the explosion-proof certificate.

5.2.2 The fan shall be of single set double speed exhaust fan or double set

single speed exhaust fan, AND the single speed exhaust fan must be one in

use and one for standby.

5.2.3 The ventilation pipeline shall be of metallic pipeline, AND after installation,

the test air leakage rate for 10% testing of all air pipeline shall reach to the

requirements of GB 50243-2002.

5.2.4 The ventilation system shall follow the principles of "fresh air incoming

from top and exhaust air from bottom", the vent hole shall be as close to the

floor and the possible leakage point as possible, AND the height from the lower

edge of the vent hole to the floor shall not exceed 100 mm. The envelope room

and the relatively enclosed room shall be equipped with the fresh air inlet at the

upper part; AND if the inlet is within the workshop of dangerous area, the inlet

shall be higher above the dangerous area for more than 1.5 m.

5.2.5 The air duct shall be beyond the roof for 1 m ~ 2 m, AND it shall install

the lightning protection device as specified AND connect it to the lightning

protection network of the building.

5.2.6 The ventilation system shall be equipped with air pressure or air flow

switches; it shall not be able to start the relevant equipment when the

ventilation system does not run; AND when the ventilation system fails during

production, it shall issue alarm and cut off the relevant power supplies AND

stop the running of relevant equipment after time delay.

5.2.7 The branch pipe of air duct and each vent hole shall be installed with the

air volume regulator valve, AND clearly indicated of the valve switch.

5.2.8 All the flange connections of all air ducts shall be connected to a

grounding line of cross sectional area not less than 6 mm2, by the copper

screw or stainless-steel material, the grounding branch line shall be kept

continuous, AND the grounding line junction shall use copper busbar, with the

grounding resistance of not more than 10 ohm.

5.2.9 The refrigerant room, supply pump room, filling area, sealing area,

leakage testing area, repair area, inspection room, and laboratory shall be

equipped with reliable ventilation system, each ventilation system shall be

independent from each other, AND the ventilation system shall be at working

state for 24 h.

room, filler, sealing area, repair area, inspection room, and laboratory, etc., it

shall install the flammable gas detector.

6.1.3 The height from the bottom of the flammable gas detector to the floor

shall not be more than 200 mm. AND the detector installed in dangerous area

shall have corresponding explosionproof level.

6.1.4 The flammable gas detector shall, before being put into use, be

subjected to configuration inspection, test and calibration. AND it shall be

calibrated at least once a year after being put into use, AND it shall be checked

based on actual c...

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 21 pages — is available in the English PDF.

Referenced standards

Normative references

GB 150 · GB 3836.1 · GB 4208 · GB 4706.32 · GB 50058 · GB 50140 · GB 50184 · GB 50235 · GB 50243-2002 · GB 50257

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