This clause of Part 1 is applicable except as follows:17.2 Replacement:Lawn trimmers, lawn edge trimmers and grass trimmers are operated at maximum speed, with the cutting means adjusted to the maximum cutting length, if applicable.Hand-held trimmers are operated for 15 h at a voltage equal to 1,1 times the highest rated voltage or 1,1 times the upper limit of the rated voltage range, and then for 15 h at a supply voltage equal to 0,9 times the lowest rated voltage or 0,9 times the lower limit of the rated voltage range. The machine may be operated for a number of periods in order to achieve the 15 h operating time. For machines that can be operated in various positions in accordance with 8.14.2, the test may be conducted in any single orientation or distributed in various orientations for each 15 h test duration.Walk-behind trimmers are operated for 15 h at a voltage equal to 1,1 times the highest rated voltage or 1,1 times the upper limit of the rated voltage range, and then for 15 h at a supply voltage equal to 0,9 times the lowest rated voltage or 0,9 times the lower limit of the rated voltage range. The machine may be operated for a number of periods in order to achieve the 15 h operating time. During the test, the machine is placed in its normal operating position according to 8.14.2.Grass trimmers, brush cutters and brush saws are fitted with the cutting means or cutting accessory, as applicable, that results in the highest power input. The machine is then operated at maximum speed for 24 h at a voltage equal to 1,1 times the highest rated voltage or 1,1 times the upper limit of the rated voltage range, and then for 24 h at a supply voltage equal to 0,9 times the lowest rated voltage or 0,9 times the lower limit of the rated voltage range. The machine may be operated for a number of periods in order to achieve the 24 h operating time.During this test, replacement of the carbon brushes is allowed, and the machine is oiled and greased in accordance with 8.14.2 c) 1). If mechanical failure occurs and does not impair compliance with this standard, the part that failed may be replaced.If the temperature rise of any part of the machine exceeds the temperature rise determined during the test of 12.1, forced cooling or rest periods may be applied, the rest periods being excluded from the specified operating time. If forced cooling is applied, it shall not alter the air flow of the machine or redistribute carbon deposits.During these tests, overload protection devices incorporated in the machine shall not activate.
This clause of Part 1 is applicable except as follows:17.2 Replacement:Lawn trimmers, lawn edge trimmers and grass trimmers are operated at maximum speed, with the cutting means adjusted to the maximum cutting length, if applicable.Hand-held trimmers are operated for 15 h at a voltage equal to 1,1 times the highest rated voltage or 1,1 times the upper limit of the rated voltage range, and then for 15 h at a supply voltage equal to 0,9 times the lowest rated voltage or 0,9 times the lower limit of the rated voltage range. The machine may be operated for a number of periods in order to achieve the 15 h operating time. For machines that can be operated in various positions in accordance with 8.14.2, the test may be conducted in any single orientation or distributed in various orientations for each 15 h test duration.Walk-behind trimmers are operated for 15 h at a voltage equal to 1,1 times the highest rated voltage or 1,1 times the upper limit of the rated voltage range, and then for 15 h at a supply voltage equal to 0,9 times the lowest rated voltage or 0,9 times the lower limit of the rated voltage range. The machine may be operated for a number of periods in order to achieve the 15 h operating time. During the test, the machine is placed in its normal operating position according to 8.14.2.Grass trimmers, brush cutters and brush saws are fitted with the cutting means or cutting accessory, as applicable, that results in the highest power input. The machine is then operated at maximum speed for 24 h at a voltage equal to 1,1 times the highest rated voltage or 1,1 times the upper limit of the rated voltage range, and then for 24 h at a supply voltage equal to 0,9 times the lowest rated voltage or 0,9 times the lower limit of the rated voltage range. The machine may be operated for a number of periods in order to achieve the 24 h operating time.During this test, replacement of the carbon brushes is allowed, and the machine is oiled and greased in accordance with 8.14.2 c) 1). If mechanical failure occurs and does not impair compliance with this standard, the part that failed may be replaced.If the temperature rise of any part of the machine exceeds the temperature rise determined during the test of 12.1, forced cooling or rest periods may be applied, the rest periods being excluded from the specified operating time. If forced cooling is applied, it shall not alter the air flow of the machine or redistribute carbon deposits.During these tests, overload protection devices incorporated in the machine shall not activate.<br>
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