Operation; Rough Grinding - Hilti AG 125-A22 Manual De Instrucciones

6.6.1 Fitting discs 10 11
WARNING
Tighten the disc and flange securely. If the nut securing
the disc and flange is not tightened firmly, the disc may
work loose from the spindle due to the braking effect of
the power tool's motor after switching off.
1. Remove the battery from the power tool.
en
2. CAUTION The clamping flange is equipped with
an O-ring. If this O-ring is missing, the clamping
flange must be replaced.
Fit the clamping flange onto the drive spindle (keyed
fit to prevent slipping/rotation).
3. Fit the disc.
4. Screw on the clamping nut corresponding to the
type of disc fitted 11.
5. CAUTION The spindle lockbutton may be
pressed only
motionless. There is otherwise a risk of causing
irreparable damage to the gearing or that the disc
works loose.
Press the spindle lockbutton and hold it in this
position.
6. Use the wrench to tighten the clamping nut securely,
then release the spindle lockbutton and remove the
wrench.
6.6.2 Removing discs
1. Remove the battery from the power tool.
2. Press the drive spindle lockbutton and hold it in this
position.
3. Release the clamping nut by gripping it with the
wrench and turning the nut counterclockwise.
4. Release the drive spindle lockbutton and remove
the disc.
6.7 Fitting and removing discs using Kwik lock
NOTE
The Kwik lock nut may be used instead of the standard
clamping nut. No tools are then required for changing
discs.

7 Operation

WARNING
Always use the side handle with the power tool (use
the hoop handle as an option).
CAUTION
The insert tool may get hot during use. Wear protective
gloves when changing insert tools.

7.1 Rough grinding

CAUTION
Never use abrasive cutting discs for grinding.
24
when the drive spindle
CAUTION
When operating the power tool, take care to ensure
that the Kwik lock nut does not come into contact with
the working surface. Do not use a damaged Kwik lock
nut.
6.7.1 Fitting discs using the Kwik lock clamping
nut 12
NOTE
The arrow on the upper surface of the nut must be within
the index marks. If the arrow is not within the index marks
when the nut is tightened it will be impossible to release
the nut by hand. In this case, use the pin wrench to
release the Kwik lock nut (do not use a pipe wrench!).
1. Remove the battery from the power tool.
2. Clean the clamping flange and the quick-release
clamping nut.
is
3. CAUTION The clamping flange is equipped with
an O-ring. If this O-ring is missing, the clamping
flange must be replaced.
Fit the clamping flange onto the drive spindle.
4. Fit the disc.
5. Screw the Kwik lock clamping nut onto the spindle
until it contacts the disc (the side with the lettering
should be visible after the nut is screwed on).
6. CAUTION The spindle lockbutton may be
pressed only
motionless. There is otherwise a risk of causing
irreparable damage to the gearing or that the disc
works loose.
Press the spindle lockbutton and hold it in this
position.
7. Use the wrench to tighten the clamping nut or,
respectively, rotate the disc firmly by hand in a
clockwise direction until the Kwik lock nut is tight,
then release the spindle lockbutton and remove the
wrench (where applicable).
6.7.2 Removing discs secured with Kwik lock
1. Remove the battery from the power tool.
2. Release the Kwik lock nut by turning the knurled ring
counterclockwise. (Use the pin wrench to release the
Kwik lock nut if very tight. Do not use a pipe wrench.)
Best results are obtained when the disc maintains an
angle of 5° to 30° with the working surface when grinding.
Move the power tool to and fro while applying moderate
pressure. This will avoid overheating and discoloration of
the workpiece and ensure an even surface finish.
7.2 Cutting
When cutting, apply moderate feed pressure and do not
tilt the power tool or, respectively, the cutting disc (hold
at approx. 90° to the surface being cut). For best results,
when the drive spindle is