Hilti AG 180-20 D, Original Operating Instructions, Page: 28 / 288

22 English 2075442
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6.3 Fitting and removing accessory tools
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 performance 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.
6.3.1 Fitting an accessory tool 5
1. Clean the clamping flange.
2. Fit the clamping flange onto the drive spindle.
3. Fit the accessory tool.
4. Screw on the clamping nut corresponding to the type of accessory tool installed.
5. Press the spindle lockbutton and hold it in this position.
6. Use the pin wrench to tighten the clamping nut securely, then release the spindle lockbutton and remove
the wrench.
6.3.2 Removing the accessory tool
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.
1. Press the spindle lockbutton and hold it in this position.
2. Release the clamping nut by gripping it with the wrench and turning the nut counterclockwise.
3. Release the spindle lockbutton and remove the accessory tool.
7 Operation
7.1 Grinding
CAUTION
Risk of injury. The accessory tool may suddenly stick or stall.
▶
Use the power tool with the side handle fitted and always hold it securely with both hands.
7.1.1 Cutting
▶
When cutting, apply moderate feed pressure and do not tilt the product or the cutting disc to either side
(hold at approx. 90° to the cutting plane).
For best results when cutting profiles and small-section rectangular tubes, start cutting at the
smallest cross section.
7.1.2 Rough grinding
CAUTION
Risk of injury. The abrasive cutting disc could shatter and flying fragments may cause injury.
▶
Never use abrasive cutting discs for grinding.
▶
Move the power tool to and fro while maintaining a 5° to 30° angle of attack and applying moderate
pressure.
➥ This will avoid overheating and discoloration of the workpiece and help ensure an even surface finish.