Safety of household and similar electrical appliances - Part 71: Particular requirements for stationary circulation pumps for heating and service water installations
GB/T 4706.71-2024Safety of household and similar electrical appliances - Part 71: Particular requirements for stationary circulation pumps for heating and service water installations
1 Scope
This clause of Part 1 is replaced by the following.
This document deals with the safety of electric stationary circulation pumps for household and similar purposes.
This document applies to electric stationary circulation pumps for household and similar purposes intended for use in heating systems or in service water systems, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances.
Note 101: The hydraulic and electrical parts of the pump can be in the same enclosure, so that the water flows through the motor and serves as a coolant, or they can be separated.
Appliances not intended for normal household use, but that nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
——persons (including children) whose prevents them from using the appliance safely without supervision or instruction:
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
——children playing with the appliance.
Note 102 Attention is drawn to the fact that
——for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;
——in many countries, additional requirements are specified by the relevant national regulatory authorities.
Note 103 This standard does not apply to
——pumps for circulating liquids other than water;
——pumps, other than circulation pumps (GB/T 4706.66);
——circulation pumps intended exclusively for industrial purposes;
——circulation pumps intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour, or gas).
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
3.1.9 Replacement:
normal operation
operation of the circulation pump with the water pressure and flow rate adjusted within their specified limits, so that the highest power input is attained
4 General requirement
This clause of Part 1 is applicable.
