Proxxon LHW Manuel D'utilisation page 13

Commissioning and operation
General handling of the device:
CAUTION!
• Do not work with damaged or worn bits and cutters!
Make sure the tools are in perfect condition. Damaged
or worn tools can break and cause injuries!
• Never press the lock button if the bits and cutters and
are still rotating.
• Please note: The utilised bits and cutters may not ex-
ceed a maximum diameter of 50 mm!
• Make sure that the permissible maximum speed of the
bits and cutters does not undershoot the speed of the
device! The tool can break when the maximum per-
missible speed is exceeded. Flying parts can cause
damage and severe injuries!
• Never work without dust protection mask and safety
glasses. Some dusts have a hazardous effect! Materi-
als containing asbestos may not be machined!
• Do not work with damaged tools!
• Ensure the work piece is fixed securely! Loose work
pieces should be clamped in a suitable fixture. This
prevents the work pieces from flying about.
• A correct and uniform speed achieves a high grinding
performance, not excessive contact pressure! Exces-
sive pressure is to be avoided: it only stresses the de-
vice and can even damage the bits and cutters!
• Hold the device without covering the ventilation slots.
If it overheats, you absolutely must shut off the device
and allow it to cool down.
• Do not use the cutting disc for rough-machining. Risk
of fracture!
• Work only with a correctly adjusted protective guard!
• When storing the bits and cutters, make sure they are
reliably protected from damage!
Hold the device by the insulated gripping surfaces, as
the grinding surface can hit its own connecting cable.
Damage to a "live" wire can stress metal parts and
cause an electric shock.
Replacing the Grinding Disc
Your LHW long-neck angle grinder is ready for opera-
tion on delivery.
Pre-assembled with a fan sander with grain 100 and 50
mm diameter, ideal for grinding and smoothing mal-
leable cast iron, grey cast iron, stainless steel, steel,
non-ferrous metal, wood and plastic.
The supplied high-grade corundum sanding disc is ideal
for roughing, grinding, sharpening and removing rust
from metal or non-ferrous metal, and the included
corundum-bound cutting disc is perfect for abrasive
cutting of steel, non-ferrous metal, plastic or wood.
We also have a great number of additional problem
solvers in our comprehensive range of accessories.
1. Press the locking button 1 (Fig. 2).
2. Turn the fastening screw 4 using an Allen key 5 un-
til the locking button engages.
3. Undo the fastening screw 4, remove the centring
disc 3 and the grinding disc 2.
4. Fit a new grinding disc.
5. Press the locking button 1 and tighten the fasten-
ing screw 4.
Adjust the protective guard.
IMPORTANT!
Disconnect the plug from the mains before the follow-
ing.
1. Release fastening screw 1 (Fig. 3) and turn the
protective guard to the desired position.
2. Retighten the fastening screw.
Using the unit
1. Switch the unit on via the switch 3 (Fig. 1).
NOTE!
Do not press too hard when using the grinder. Good
grinding performance can only be achieved using the
correct and constant rotational speed.
To achieve the best results when roughening, apply
the grinding disc to the grinding surface at an angle
of between 30° and 40° and move evenly back and
forth over the workpiece.
Do not bend the grinding disc into the cutting surface
during cutting work.
- 13 -