AS/NZS 62841.3.4:2017 pdf free.Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery – Safety – Part 3.4: Particular requirements for transportable bench grinders.
8.3 Addition:
Bench grinders shall be marked with the minimum and maximum diameter of the accessory to be used on each tool spindle.
Bench grinders shall be marked with the direction of rotation of the tool spindle, indicated in a visible location on the tool in the vicinity of the tool spindle, by an arrow raised or recessed or by any other means no less visible and indelible.
8.14.1 Addition:
The additional safely 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 Safety instructions for bench grinders
Bench grinder safety warnings
a) Do not use a damaged accessory. Before each use, inspect the accessory such as abrasive wheels for chips and cracks and wire brushes for loose or cracked wires. After Inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no-load speed for one minute. Damaged accessories will normally break apart during this test time.
NOTE I For tools that are not intended for wire brushes, the phrase and wire brushes for loose or cracked wires Is omitted.
b) The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and fly apart.
C) Be aware that wire bristles are thrown by the wire brush even during ordinary operation. Do not overstress the wires by applying excessive load to the wire brush. The wire bristles can easily penetrate light clothing and/or skin.
NOTE 2 The above safety warning applies only to tools intended to be used with wire brushes.
d) Never grind on the sides of a grinding wheel. Grinding on the side can cause the wheel to break and fly apart.
8.14.2 a) Addition:
101) Information about details and type of the accessory(ies) recommended for each tool spindle. e.g. the maximum thickness of the accessory and the diameter of the hole in the accessory;
102) Instruction to use only accessories with a diameter according to the relevant marking as required by 8.3;
103) Instruction to ensure that the bench grinder is always stable and secure (e.g. fixed to a bench) and instruction how to fix the tool to a workbench or the like:
104) Instructions on the correct mounting of wheels and ensuring that wheels are free of defects before use, including instructions for performing a ring test for cracks,
8.14.2 b) Addition:
101) Instruction to adjust the spark arrestor and the work rest frequently so as to compensate for wear of the wheel:
102) Instruction to keep the distance between the spark arrestorlwork rest and the whee’ as small as possible and in any case not greater than 2 mm;
103) Instruction to replace the worn wheel when these gaps are no longer able to be maintained.AS/NZS 62841.3.4 pdf download.