DC 1800/2800 H EX - 15
Part No 94169-B
Operation
The following precautions should generally be ob-
served before the start of maintenance operations:
1. To avoid the spread of dust, before the machine is
removed from the contaminated area, it must be
vacuumed and wiped clean, and the suction open-
ings should be closed with sealing means such as
plugs.
2. All machines must be regarded as being contami-
nated if they are removed from the hazardous zone.
Appropriate measures must be taken to prevent the
spread of dust.
3. When performing maintenance or repair opera-
tions, all contaminated items that have not been
cleaned satisfactorily must be disposed of. Such
items must be disposed of in dustproof bags in ac-
cordance with the provisions that are applicable to
the disposal of waste.
4. Clean the machine before disassembly.
5. (Wherever possible), choose a room with
fi
ltered
forced ventilation.
6. Clean the maintenance area beforehand.
7. Use suitable personal protective equipment.
8. The
fi
lter cartridge in the cyclone should be re-
placed as necessary, and at least once a year. Only
use an original
fi
lter. (Order no. 42027H).
9. Motor unit: As part of annual maintenance , the
fi
lters in the motor housing must be replaced (Part
No. 432123H). These parts must be replaced by
quali
fi
ed personnel who have been trained by
EN
G
L
ISH
Dustcontrol. These
fi
lters are part of the explosion
protection system. In the event of high levels of
dust, an inspection should be carried out after 4
months to determine whether the
fi
lters should be
changed at more frequent intervals.
10. The machine should be disconnected from the
power supply during cleaning and maintenance.
Service operations should never take place in the
zone area.
11. Overload protection. The machine is equipped
with overheating protection. If insuf
fi
cient air
fl
ows
through the motor unit (due to overload), the motor
will switch off at temperatures exceeding 55°C
(overheating). In these situations, it is important
to determine the cause of the overheating. Switch
off the mains power and pull out the mains plug,
then wait until the motor has cooled down (up to 30
minutes).
12. As the machines are used in explosive environ-
ments, the functionality of the machine must be
inspected by the manufacturer or a trained person
at least once a year (e.g. inspection of the
fi
lter for
damage, inspection of the air tightness of the dust-
extraction machine and function of the control unit,
and inspection of the electrical components, seals
and potential equalisation cables for damage. Only
use original spare parts.
13. To empty the dust collection container, the two
fasteners must be released with care, one after the
other, to prevent dust from being stirred up un-
necessarily. After lowering the container, (on the
DC 2800 H EX) and after lifting up the top section
of the machine (on the DC 1800 H EX) the extrac-
tor should be switched on again in order for any
Be careful when releasing the fasteners, as they can open
with great force, especially when the material is heavy.
Be aware that emptying the container may pose a risk of
explosion, i.e. an explosive atmosphere may occur and a
static charge may be generated by the friction of particles
against the container. See CENELEC TR 50404 for the
appropriate measures.
When the container is attached back onto the dust extrac-
tor, make sure that the bracket is properly attached to the
contact plate. The red arrow markings must be aligned so
that they point towards each other.
Service
