Hilti AG 500-11S Mode D'emploi Original page 21

6.4 Fitting or removing the discs
CAUTION
Risk of injury. The accessory tool may be hot.
▶ Wear protective gloves when changing the accessory tool.
Diamond discs must be replaced when their cutting or grinding perfor-
mance drops significantly. This generally is the case when the diamond
segments reach a height of less than 2 mm (1/16").
Other discs must be replaced when their cutting performance drops
significantly or other parts of the angle grinder (not the disc) come into
contact with the material you are working on.
Abrasive discs must be replaced when their expiry date has been
reached.
6.4.1 Fitting the grinding disc
1. Disconnect the mains plug from the power outlet.
2. Clean the clamping flange and the clamping nut.
3. Screw the clamping flange onto the arbor.
4. Fit the grinding disc.
5. Screw on the clamping nut corresponding to the type of grinding disc
fitted.
6. Press the arbor lockbutton and hold it in this position.
7. Use the pin wrench to tighten the clamping nut securely, then release the
arbor lockbutton and remove the wrench.
6.4.2 Removing the grinding disc
1. Disconnect the mains plug from the power outlet.
CAUTION
Risk of breakage and irreparable damage. If the spindle lockbutton is
pressed while the spindle is rotating, the accessory tool can detach from the
power tool.
▶ Press the spindle lockbutton only when the spindle has stopped rotating.
2. Press the spindle lockbutton and hold it in this position.
3. Release the clamping nut by gripping it with the pin wrench and turning
the nut counterclockwise.
4. Release the spindle lockbutton and remove the grinding disc.
*2141935*
Printed: 19.10.2018 | Doc-Nr: PUB / 5402266 / 000 / 01
9
2141935 English 15