User manual HUSQVARNA MASTER PRO

[. . . ] Inspection and/or maintenance should be carried out with the motor switched off and the plug disconnected. Dust forms when grinding which can cause injuries if inhaled. Dust forms when grinding, which can cause injuries if inhaled. This product is in accordance with applicable EC directives. [. . . ] As different applications require different selections of diamond tools, there will be many occasions when the grinding discs need to be changed. Following is a guide for this procedure. Ensure STOP/RUN switch is in STOP position and the power-plug disconnected as unintentional starting of machine while changing discs can result in serious injury. Have a set of gloves ready, as diamonds can get very hot during dry grinding applications. Pull back on handle to lift grinding head off the ground. Remove grinding disc by slightly rotating disc and then pull off (direction that the discs will need to be rotated will depend on the direction the machine was last running). Check to ensure all head locks/shear pins are tight. Once new diamonds have been attached, reverse procedure to lower machine to ground. As new diamonds may be a different height to set being previously used, re-adjust skirt to ensure good seal is established with the floor. Variable speed drives/frequency converters Variable speed drives/ frequency converters Each Husqvarna MASTER PRO is equipped with 1 variable speed drive or frequency converter. This unit is incorporated into the machine for the following reasons: 1. 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. Motor being worked too hard and drawing extra current. Check current being drawn when machine is running. 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. [. . . ] The planetary drive system can be seen as illustrated diagram 1. Planetary seal The chain ring and planetary drive sprocket are located beneath the cover of the machine, however on the outside of the machine, there lies the potential that they can be exposed to dust and other debris created during the grinding process. In order to prevent this as much as possible, a planetary seal has been installed to stop dust and other particles from coming into contact with the planetary drive mechanism. Lubrication of this system will cause dust to build up in chain ring and drastically shorten the life of both the chain ring and planetary drive sprocket. [. . . ]