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13 © 2020 Dehaco B.V. • User and maintenance manual • DEH Negative Pressure Units_2021-02_v1.0_NL
6. Commissioning | 7. Maintenance
person! For this, please contact your supplier or
Dehaco.
6.3 Switching off
WARNING!
The instructions described here only relate to the
machine. Stopping is only allowed after permission
from local authorities. Additional instructions from
local authorities and provisions for the benefit of
personal protection are required.
Enter the contaminated zone in conformity with the
applicable rules and regulations.
1. Remove the contaminated pre-filter. Treat it as
contaminated waste.
2. Remove all contamination visible on the inside
of the machine by means of a vacuum cleaner or
duster.
3. Do not place a new pre-filter.
4. Place the transit plate on the machine.
5. Apply tape to the joints to make them air tight all
around.
6. Switch off the machine using the on/off switch.
7. Remove the power cable.
7. MAINTENANCE
7.1 General
BEWARE!
Regular preventive maintenance reduces the risk of
malfunctions during work.
Repair established damages or deviations prior to
starting work in order to avoid greater damage.
Daily check that the guard of the fan is present and
undamaged.
-
Daily check that the power cables are not damaged
and are placed in such a way that the energy
supply cannot easily be interrupted.
-
Keep the machine clean and dry. If the machine is
clean, there can be no confusion as to whether the
machine is contaminated or not.
-
Regularly change the pre-filter. The frequency is
determined by the manometer and through visual
inspection.
-
Regularly check the machine housing for damages,
tears, etc.
-
7.2 Inspection and maintenance
diagram
Have the machine inspected and certified by an
authorised institution on an annual basis. For this,
please contact your supplier or Dehaco.
7.3 Changing the pre-filter
Replacing the pre-filter
BEWARE!
The pre-filter is regarded as contaminated material
and should be treated as such.
The pre-filter may only be replaced when the machine
is connected to a contaminated zone on a site.
1. Check that the machine is located in a suitable
area.
2. Check that the machine is “on”.
3. Remove the transit plate, if still present.
4. Remove the contaminated pre-filter. Treat it as
contaminated waste.
5. Remove all contamination visible on the inside
of the machine by means of a vacuum cleaner or
duster
6. Place a new pre-filter in the machine. Make sure
the folds are vertical!
7. Apply suitable tape to the joints all around.
8. The machine can now be used again.
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