User manual HUSQVARNA MASTER PRO

[. . . ] Inspection and/or maintenance should be carried out with the motor switched off and the plug disconnected. WARNING Under no circumstances may the machine be started without observing the safety instructions. Should the user fail to comply with these, Husqvarna Construction Products Sweden AB or its representatives are free from all liability both directly and indirectly. Read through these operating instructions and make sure that you understand the contents before starting to use the machine. [. . . ] It should be noted, however, that when both grinding discs and planetary heads are running in the same direction, a more powerful grinding force is created between the diamonds abrasives and floor being ground. The end result ishigher productivity than when the discs are set to run in opposite directions. For this reason, the machine is set so that both the grinding heads and planetary rotation are set in the same direction. production tip - To improve the cutting efficiency of diamonds , change directions on a regular basis. This will work both sides of the diamond crystals, keeping the abrasives as sharp as possible by creating maximal exposure of the diamond crystal. Once both speed and direction have been nominated, switch on dust extraction or vacuum device. It is highly recommended to use the Husqvarna DC 3300 dust extraction system for complete dust control. Standing behind machine with handlebars set as described earlier, apply a small amount of downward pressure on the handle. Switch the machine to run mode using the STOP/RUN switch on the control panel. The machine should start smoothly and accelerate to the selected speed over a period of 5 seconds. As different applications require different selections of diamond tools, there will be many occasions when the grinding discs need to be changed. Short circuit on output side of variable speed drives or frequency converters. Motor failure (very rare) Poor voltage supply to machine will result in excess current draw 3--EARTH FAULT Short circuit on output side of variable speed drives or frequency converters. motor failure (very rare) 9--UNDER VOLTAGE Insufficient voltage supply to machine. Power supply to variable speed drives or frequency converters has been turned off. 11--OUTPUT PHASE SUPERVISION 14--UNIT OVER TEMPERATURE Short circuit on output side of variable speed drives or frequency converters. Motor failure (very rare) Variable speed drives or frequency converter over temperature due to high temperature working environment or faulty temperature sensor. Reduce speed setting and current draw back into acceptable limits as described on previous page. Try rotating grinding discs and planetary head by hand to see if jam exists Check current being drawn when machine is running. Reduce speed setting and current draw back into acceptable limits as described on previous page. 16 - MOTOR OVER TEMPERATURE Motor being worked too hard and drawing extra current. Further problems that may be experienced when using the grinder and potential solutions are as follows: Problem Not enough diamonds under the machine (if grinding thick glue or soft floors, too few diamonds under the machine will greatly increase the load on grinder and operator). [. . . ] The head pins are able to move within the head pin holes, creating a shock absorber type system similar to that in most motor vehicles. This combined wearing of the two creates excessive movement or "slop" within the grinding heads. Life expectancy for grinding heads can vary between 6 and 12 months depending on amount of usage. Replacement heads are available and simply bolt into place when the old ones are removed. [. . . ]