Care And Maintenance; Environmental Protection - Metabo DMH 290 Set Manual Original

en ENGLISH
couplings directly onto the compressed air connec-
tion (7) - simply screw the hose connection (8) onto
the device and then connect the compressed air
hose to this. The compressed air hose between the
compressed air connection (7) and a quick-lock
coupling must be at least 20 cm in length. If fitted too
close to the device, a quick-lock coupling may fail:
whiplashing hoses can cause serious injury as a
result.
- Screw the enclosed hose connection (8) on the
compressed air connection (7): using an open-
end spanner, secure the compressed air connec-
tion against twisting and then screw on the hose
connection (8) with another open-end spanner.
See Page 2, Fig. A.
- Fit the enclosed double ear hose clamp onto the
compressed air hose that you want to connect.
- Push the compressed air hose onto the hose
connection as far as it will go.
- Slide the double ear hose clamp onto the hose
connection. Using a suitable pliers, pinch the two
ears together (see Page 2, Fig. B).
6.2 Using the air tool
To benefit from the air tool's full performance,
always use compressed air hoses with an inner
diameter of at least 10 mm. Tool performance can
be significantly impaired if the inner diameter is too
small.
Caution. The compressed air line must not
contain any water condensation.
Caution. To preserve and extend the service
life of this tool, you must ensure that it is regu-
larly maintained with pneumatic oil lubricator. You
can do this as follows:
– Use oiled compressed air by fitting an oil-fog lu-
bricator.
– Without an oil-fog lubricator: manually apply oil
every day via the compressed air connection.
Use approx. 3-5 drops of pneumatic oil lubricator
for each 10 minutes of continuous operation.
If the tool has not been in use for several days, you
should manually apply about 5 drops of pneumatic
oil lubricator into the compressed air connection.
Caution. Do not run the tool at idle speed.
1.Screw the quick-change chuck (4) onto the
chisel hammer, as far as it will go.
2. To fit the chisel: draw the tool lock (3) back-
wards in the direction of the arrow (a), twist the
chisel (1) and insert into the chisel holder (2)
as far as it will go (b). Release the tool lock (3).
Pull on the chisel to check that it is seated cor-
rectly. (It must be possible to move the chisel a
few centimetres in an axial direction.)
3. Adjust the supply pressure (this is measured at
the air outlet while the air tool is switched on).
For details of the maximum permissible supply
pressure, see the section on "Technical Specifi-
cations".
4. Connect the air tool to the compressed air sup-
ply.
5. Place the chisel on the workpiece to be pro-
cessed.
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6. To switch on: press switch (5).
To switch off: release switch (5)
7. To remove the chisel: draw the tool lock (3)
backwards in the direction of the arrow (a) and
remove the chisel (c).
.

7. Care and Maintenance

Danger! Disconnect the compressed air con-
nection before carrying out any work.
Danger! Repair and maintenance work other
than the work described in this section should
only be carried out by qualified specialists.
- To prevent deposits of dust and foreign bodies,
apply a few drops of oil to the chisel holder every
2 operating hours.
- Carry out regular maintenance to ensure the
safety of the air tool.
- Check that all screw fittings are seated securely,
and tighten if necessary.
- Clean the filter in the compressed air connection
at least once a week.
- It is recommended that you install a pressure
reducer with an air-water separator and lubricator
upstream of the air tool.
- If a large amount of air or oil is escaping, check the
air tool and have it maintained if necessary. (See
Section 9.)
- Check the rotational speed regularly and after
every use. Also carry out a simple check on vibra-
tion emission.
- Avoid contact with dangerous substances that
have accumulated on the tool. Wear suitable
personal protective equipment and take appro-
priate measures to remove any dangerous
substances before maintenance.
f
8. Accessories
Use only genuine Metabo accessories.
Only use accessories that are designed for this air
tool and that fulfil the requirements and the specifi-
cations listed in these operating instructions.
For a complete range of accessories, see
www.metabo.com or the catalogue.
9. Repairs
Danger! Repairs to air tools must only be
carried out by qualified specialists, using orig-
inal Metabo spare parts!
If you have Metabo air tools that require repairs,
please contact your Metabo service centre. For
addresses see www.metabo.com.
You can download spare parts lists from
www.metabo.com.

10. Environmental Protection

Observe national regulations on environmentally
compatible disposal and on the recycling of disused
air tools, packaging and accessories. You must not
cause risks to people or the environment.