User manual MAKITA DBM131

[. . . ] After interrupt cutting, do not switch on the motor again unless core bit can rotate freely. To avoid machine self-starting, always trigger-off the switch should power supply become interrupted or plug accidentally withdrawn from the socket while motor is still running. When coring manually, always use also auxiliary handle (side handle) and hold the machine firmly with both hands. Keep sure-footing and body balance at all times for better control of reaction torque. [. . . ] for longer disregard of the red LED it follows a self-contained of the machine. When continuous overload is applied (despite the electronic device) a thermal protection will protect the motor. The machine disengages itself in this case and can be put into operation after waiting for cooling down (approx. ) The time needed to be able to restart the machine will be vary dependent on overheating of the coil and the ambient temperature. To speed up the cooling down of the machine let the machine after the restart run 1-2 min. If there is water leakage between the water supply ring and the gearbox housing you have to change the water supply respectively replace the shaft seals by new and slight greasy shaft seals. Pay attention to the position of the dowel (for protection against twist) Do not damage the seal rings during the mounting. In case of drilling "overhead" you have to exhaust the leak out water at the drill hole by suction ring and wet-vacuum cleaner for reasons of safety at work and reliability. For operator full protection this machine must only be used by wet drilling with fault current protection device. Therefore the DBM181 is standard equipped witch PRCD protection switch be used on a grounded socket. Due to it's design, the machine needs a minimum of care and maintenance. Nevertheless, you should always observe the following: Keep the electric tool clean Avoid any particle or part to penetrate inside the tool If the machine is defect let carry out a repair only through an authorized workshop. 2 Dry Drilling Only perform dry core-drilling on brickwork and soft lime or soft sand stones. employ suitable type of vacuum and which also have ample of suction power. Plentiful suction air offers additional benefit of cooling the core drill's body and free of dust, running more freely. Moving core drill slightly back every now and then during coring process will make dust extraction more effective. In doing so make sure not to tilt the core drill bit, as this will substantially shorten its useful life. Use solid pilot inserted into the core-bit until a starting groove about 5mm deep is cut. Then remove pilot bit, otherwise it will start overheating and become unnecessarily defective. Alternatively you can also use separate hammer drilling machine to make a pilot hole which then renders removal of the pilot from core bit unnecessary. There has to be enough water to flush all the residue out of the groove. If using pressurised water container, make sure it will deliver the required amount. [. . . ] Re-dress more often by cutting into piece of corundum grinding wheel to reexpose diamond particles. There is proportionate relationship between hardness of diamonds impregnated segment material, cutting speed and abrasiveness of material being cut. Should core-bit jam or there is no progress made when drilling, check to ensure that there is sufficient amount of diamonds present in the surface of segments. Safety Switch Check RCD (Residual Current Device) daily, following enclosed instructions. [. . . ]