AS NZS 62841.2.9:2015 pdf download.Electric motor-operated hand-held tools,transportable tools and lawn and garden machinery——Safety Part 2.9: Particular requirements for hand-held tappers and threaders.
8 Marking and instructions
This clause of Part 1 is applicable, except as follows:
8.1 Addition:
In addition the tool shall have the following marking:
maximum diameter, in millimetres (for tappers) or in inches (for threaders), of the thread which can be cut.
NOTE According to the International System of Units, only SI units should be used. Nevertheless, some pipe diameters and threads are still specified in inches internationally.
For tappers, the diameter shall refer to a unified ISO thread to be cut into steel having a tensile strength of 390 N/mm2 and a thickness of twice the thread diameter, unless otherwise indicated on the tool.
For threaders, the diameter shall refer to a taper style thread in accordance with ISO 7-1 to be cut on steel tubes in accordance with ISO 65, unless otherwise indicated on the tool.
8.14.1 Addition:
For threaders, the additional safety instructions as specified in 8.14.1.101 shall be given.
This part may be printed separately from the “General Power Tool Safety Warnings”.
8.14.1.101 Threader safety warnings
a) Always use the support device provided with the tool. Loss of control during operation can result in personal injury.
b) Keep sleeves and jackets buttoned while operating the tool. Do not reach across the tool or pipe. Clothing can be caught by the pipe or the tool resulting in entanglement.
c) Only one person must control the work process and tool operation. Additional people involved in the process may result in unintended operation and personal injury.
d) Keep floors dry and free of slippery materials such as oil. Slippery floors invite accidents.
8.14.2 a) Addition:
101) for threaders: instructions for mounting and use of the support device.
8.14.2 b) Addition:
101) for threaders: instructions to always use the support device supplied with the tool;
102) for threaders with multiple gear box settings: information about which gear box setting is to be used for each pipe diameter.
9 Protection against access to live parts
This clause of Part 1 is applicable.
10 Starting
This clause of Part 1 is applicable.
11 Input and current
This clause of Part 1 is applicable, except as follows:
Modification:
For threaders, the requirements of this clause are replaced by the following:
The rated input or rated current shall be at least 100 % of the measured input or current applying the torque in Table 101.
Compliance is checked by measuring the power input or current of the tool when stabilized while all circuits which can operate simultaneously are in operation.
For tools marked with one or more rated voltages, the test is made at each of the rated voltages. For tools marked with one or more rated voltage ranges, the test is made at both the upper and lower limits of the ranges. For tools with multiple gear box settings, the test is made at each specified gear box setting in accordance with 8. 14.2 b). The highest value of in put or current is applicable.
12 Heating
This clause of Part 1 is applicable, except as follows:
12.2.1 Replacement:
Tappers are operated intermittently for 30 cycles or until thermal equilibrium is reached, whichever is achieved first, each cycle comprising a period of continuous operation of 30 S and a rest period of 90 S with the tool switched of f, the tool being loaded during the periods of operation by means of a brake adjusted so as to attain rated input or rated current. The temperature rises are measured at the end of the last “on” period.
Threaders are operated for 30 s at load followed by 30 s no load and then switched off for a rest period of 60 s. This cycle is continued until thermal equilibrium is reached, or for 30 cycles, whichever is achieved first. The tool is loaded during the periods of operation by means of a brake adjusted to attain the torque specified in Table 101. The brake load may be ramped up to the specified torque over a period of time not to exceed 5 s. This ramp up time is added to the 30 s cycle at load. The temperature rises are measured at the end of the last load period.
The above test cycle may, at the manufacturer’s option, be replaced by continuous operation of the tool until thermal equilibrium is reached.AS NZS 62841.2.9 pdf download.