[. . . ] They are double-insulated in accordance with European Standard and can, therefore, also be used from sockets without earth wire. Safety hints For your own safety, please refer to enclosed Safety instructions. [. . . ] If working place is extremely hot and humid, or badly polluted by conductive dust, use a short-circuit breaker (30 mA) to assure operator safety. Mount the wheel guard with the tab on the wheel guard band aligned with the notch on the bearing box. For other countries than the above countries To start the tool, simply pull the trigger. For continuous operation, pull the trigger and then push the lock lever. To stop the tool from the locked position, pull the trigger fully, then release it. The side grip can be installed on either side of the tool, whichever is convenient. In general, keep the edge of the wheel or disc at an angle of about 15° ­ 30° to the workpiece surface. During the break-in period with a new wheel, do not work the grinder in the B direction or it will cut into the workpiece. Once the edge of the wheel has been rounded off by use, the wheel may be worked in both A and B directions. Continued use of a worn-out wheel may result in wheel explosion and serious personal injury. Depressed center wheel should not be used after it has been worn down to 90 mm for 9015B or 100 mm for 9016B in diameter. Use of the wheel after this point is unsafe and it should be removed from service and rendered unusable by intentional destruction. [. . . ] The use of any other accessories or attachments might present a risk of injury to persons. The accessories or attachments should be used only in the proper and intended manner. [. . . ]