AS NZS 60335.2.51:2020 pdf free download – Household and similar electricalappliances—Safety Part 2.51: Particular requirements forstationary circulation pumps for heating and service water installations

AS NZS 60335.2.51:2020 pdf free download – Household and similar electricalappliances—Safety Part 2.51: Particular requirements forstationary circulation pumps for heating and service water installations.
— theTF class:
— the direction of the water flow:
— the direction of rotation (for pumps having three-phase motors);
— the rated current (for pumps having three.phase motors If a protective device has to be installed in the fixed wiring).
7.12 Modification:
The instruction concerning persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge is not applicable.
The instruction regarding supervision of children is not applicable.
7.12.1 AddiI,On:
The installation instructions shall state the substance of the following:
— the maximum flow rate or total head:
— the maximum ambient temperature at which the pump is to be used:
— the maximum system pressure. which shall not be less than:
• 0,6 MPa for pumps for heating systems:
• 1,0 MPa for pumps for service water systems;
— the intended orientation of the pump;
— a protective device is to be installed in the fixed wiring and its characteristics are to be specified (for pumps having a three-phase motor not incorporating a protective device)
— for the thermal insulation of circulation pumps in heating systems, only the supplied kit or a kit made available by the manufacturer shall be used. It shall be ensured that the drain openings of the motor are not sealed after Installation of the thermal insulation.
B Protection against access to live parts
This clause of Part 1 Is applicable.
9 Starting of motor-operated appliances
This clause of Part 1 Is not applicable.
10 Power input and current
This clause 0, Part I is applicable.
24.1.3 Modification:
Switches that are only in tended to be operated during installation of the pump are subjected to 100 cycles of operation.
25 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows.
25.5 Addition:
Type Z attachment is allowed.
26 Terminals for external conductors
This clause of Part 1 is applicable.
27 Provision for earthing
This clause of Part 1 is applicable.
28 Screws and connections
This clause of Part 1 is applicable.
29 Clearances, creepage distances and solid insulation
This clause of Part 1 is applicable.
30 Resistance to heat and fire
This clause of Part 1 is applicable except as follows.
30.2.2 Not applicable.
31 Resistance to rusting
This clause of Part 1 is applicable.
32 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.