Nilfisk 3707 Manuel D'instructions page 28

3707 - 3907 - 3907 L, M, H - 3907/18 - 3907/18 L, M, H
3707/10 - 3707/10 L, M, H - 3907 W - 3907 W L, M, H
Maintenance, cleaning and decontamination
ATTENTION DANGER!
NOTE: The precautions described below must be taken
during all the maintenance operations, including cleaning
and replacing the main and Hepa filters.
A. To allow the user to carry out the maintenance
operations, the vacuum must be disassembled,
cleaned and overhauled as far as is reasonably
possible, without causing hazards for the maintenance
staff or other people. The suitable precautions include
decontamination before disassembling the vacuum,
adequate filtered ventilation for the air exhausted from
the room in which it is disassembled, cleaning of the
maintenance area and suitable personal protection.
B. The external parts of class H and class M appliances
must be decontaminated by cleaning and vacuuming
methods, dedusted or treated with sealant before
being taken out of a hazardous zone.
All parts of the appliance must be considered as
contaminated when they are removed from the
hazardous zone and appropriate actions must be
taken to prevent dust from dispersing.
When servicing work or repairs are carried out, all the
contaminated elements that cannot be cleaned well
must be eliminated.
These elements must be disposed of in sealed bags
conforming to the applicable regulations and in
accordance with the local laws governing the disposal
of such material.
This procedure must also be followed when the filters
are eliminated (main, Hepa and downstream filters).
NOTE: Compartments that are not dust-tight must be
opened with suitable tools (screwdrivers, wrenches, etc.)
and thoroughly cleaned.
C. Carry out a technical inspection at least once a year,
e.g.: check the air filters to find out whether the air-
tightness of the appliance has been impaired in any
way and make sure that the electric control panel
operates correctly. This inspection must be carried out
by the manufacturer or by a competent person.
ATTENTION DANGER!
GB Only use genuine spare parts.
C65
How to disassemble and replace the main and
Hepa filters
ATTENTION DANGER!
When the vacuum cleaner is used to clean up hazardous
substances, the filters become contaminated, thus:
– work with care and avoid spilling the vacuumed dust
and/or material;
– place the disassembled and/or replaced filter in a
sealed plastic bag;
– close the bag hermetically;
– dispose of the filter in accordance with the current
laws.
ATTENTION DANGER!
Filter replacement is a serious matter.
The filter must be replaced with one of identical
characteristics, filter surface and category.
Failing this, the vacuum cleaner will not operate correctly.
Main filter replacement
ATTENTION DANGER!
Check the Class of the vacuum cleaner (L - M - H).
Take care not to raise dust when this operation is carried
out. Wear a P3 mask and other protective clothing plus
protective gloves (DPI) suited to the hazardous nature of
the dust collected. Refer to the relative laws in force.
Before proceeding with this operation, turn off the machine and
remove the plug from the power socket.
Disassembly
– Remove the hose "A" (Fig. 12) from the lower outlet.
–
Release stop "B" (Fig. 12) and unscrew filter shaker knob
"C".
– Release the two fastening latches "D" (Fig. 12) and
remove lid "E".
–
Lift filter "F" (Fig. 12), unscrew clamp "G" and remove ring
"H".
– Unscrew cage "I" (Fig. 12) and turn the filter upside down.
– Cut the plastic clamps "L" (Fig. 12) and detach the cage
from the filter.
Assembly
– Fit the filter catch and retention ring of the old filter on to
the new one.
– Insert cage "I" (Fig. 12) and fix it to the filter by means of
plastic clamps "L" on the bottom of the filter itself.
– Fit the filter into filtering chamber then mount lid "E" (Fig.
12) and lock it in place with the two fastening latches "D".
– Fit the filter shaker knob and lock it in the lowered position
by means of the stop so that the filter is kept stretched.
– Fit the suction hose on the lower outlet.
– Dispose of the filter in accordance with the laws in force.
10
01/2015