GB/T 37916-2019Safety specification for small electric high pressure cleaning/washer (English PDF)
小型电动高压清洗机安全规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 30, 2019
Implementation date
March 1, 2020
Scope
GB/T 37916-2019 is the English-translated version of 小型电动高压清洗机安全规范.
GB/T 37916-2019 is the Chinese standard "Safety specification for small electric high pressure cleaning/washer". Its scope clause reads: This standard specifies the safety requirements, signs, signs and instructions for small electric high pressure cleaners.
This standard is applicable to the transportation medium which is mixed with normal temperature water or moving viscosity not more than 45mm2/s, free of particles and non-corrosive.
Combined liquid, commercial and domestic small electric pressure washers for mobile and portable hand-held spray guns driven by electric motors (hereinafter referred to as washing machine).
This standard does not apply to washing machines used in special environmental places, such as flammable, explosive, toxic and harmful gases and radioactive environments. Its clauses include terms and definitions.
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Document preview — GB/T 37916-2019
National Standard of the People's Republic of China
- ICS
- 23.100
- Classification
- J 70
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Safety requirements
- 4.1 General requirements
- 4.2 Electrical requirements
- 4.3 Safety protection of rotating parts
- 4.4 Overpressure protection
- 4.5 Water jet damage hazard control
- 4.6 Gun reaction force and torque
- 4.7 Handle, support or similar parts of the washing machine
- 4.8 Hydrostatic test
- 4.9 Internal wiring requirements
- 4.10 Power connection and external cord
- 5 signs and logos
- 5.1 Mark
- 5.2 Mark
- 6 Manual
- 6.1 General
- 6.2 Operating Instructions
- 6.3 Important Safety Instructions
- 6.4 Installation Instructions and Repair Instructions
1 Scope
This standard specifies the safety requirements, signs, signs and instructions for small electric high pressure cleaners.
This standard is applicable to the transportation medium which is mixed with normal temperature water or moving viscosity not more than 45mm2/s, free of particles and non-corrosive.
Combined liquid, commercial and domestic small electric pressure washers for mobile and portable hand-held spray guns driven by electric motors (hereinafter referred to as washing machine).
This standard does not apply to washing machines used in special environmental places, such as flammable, explosive, toxic and harmful gases and radioactive environments.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 3883.1 Safety of hand-held, portable power tools and garden tools - Part 1. General requirements
GB/T 4208-2017 enclosure protection grade (IP code)
GB 4706.89-2008 Special requirements for safety industrial and commercial high-pressure cleaners and steam cleaners for household and similar electrical appliances
GB/T 5013.4 Rubber insulated cables of rated voltages up to and including 450 750V. Part 4. cords and flexible cables
GB/T 5023.5 Rubber insulated cables of rated voltages up to and including 450.
GB/T 7785 reciprocating pump classification and terminology
JB/T 12491 Jet equipment terminology
3 Terms and definitions
GB/T 3883.1, GB 4706.89-2008, GB/T 7785 and JB/T 12491 and the following terms and definitions apply to
This document.
3.1 Small electric high pressure cleaner
A motor driven pump is used as a water jet cleaning machine for the high pressure water generating device. Its rated discharge pressure is not less than 0.7MPa and is not large
At 40MPa, rated flow is not more than 90L/min, motor power is not more than 15kW, current and voltage single phase does not exceed 250V, three-phase
Not more than 480V.
3.2 Normal operation
Follow the instructions in the manufacturer's instructions. Operating the machine under operating conditions, including but not limited to rated voltage,
It is operated under rated flow and rated pressure conditions, and the inlet filter is in a clean state and suitable working environment.
3.3 Pressure relief unloading valve
A valve that adjusts the pressure of the washer to a set value and remains stable. When the pressure exceeds the set value, the valve overflows part of the fluid back into the a port system or an external low pressure (eg atmospheric) environmental system; in addition, when the outlet flow is cut off (eg, the spray gun is turned off), it will pump the entire flow
The overflow is returned to the inlet system or an external low pressure (eg atmospheric) environmental system to ensure that the pump pressure drops to a low pressure (usually close to zero pressure).
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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