Replacing The Hepa Filter; Checking And Cleaning The Motor Cooling Fan; Seal Inspection; Cleaning And Replacing The Separator (Fig. 17) - Nilfisk 127 Manuel D'instructions

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Assembly (fig. 12)
- Mount the filter catch and retention ring of the old filter
on to the new one.
- Insert cage "H" and fix it to the filter by means of clamps
"I" at the bottom of the filter itself.
- Fit the filter into filtering chamber.
- Mount the head "D" and lock it in place with the closing
clips "C".
Mount the lever "B" in position with the nut and relative
-
washer.
- Fit on the plug "A" by exercising a slight pressure.
-

Replacing the Hepa filter

Version for dust that is hazardous for the health: Class H.
-
ATTENTION DANGER !
Take care not to raise the dust when this operation is
carried out. Wear a P3 mask and other protective cloth-
ing plus protective gloves (DPI) suited to the hazardous
nature of the dust collected. Refer to laws in force.
- Replacing the upstream Hepa filter (fig. 13)
Remove the plug "A", unscrew the nut underneath and
-
remove the lever "B".
- Release the hooks "C" and lift the head "D".
- Unsrew the knob "G" and take the nut "F" under the
filter "E";
Cover the filter "E" with a plastic bag and remove eve-
-
rything;
- Seal the bag, fit the new filter and hermetically close
the cover.
Mount the following parts in the given order:
I
- the absolute filter;
- nut and central knob for locking;
- the head, locking it to the filtering chamber "C";
GB
- the lever with the relative washer, nut and plug.
F
- Checking and cleaning the motor cooling
fan
D
Periodically clean the motor(s) cooling fan to prevent the
electric motor(s) from overheating, particularly - if the ap-
E
pliance is used in a dusty place.
C72
-

Seal inspection

Checking the condition of the hoses
-
Make sure that connecting hose hoses "A" is in a good
condition and correctly fixed.
If the hose is damaged, broken or badly connected to the
unions, this must be replaced.
When sticky materials are treated, check for possible
clogging along the hose, in outlet and on the baffle in the
filtering chamber.
Scrape outside the outlet and remove the deposited waste
as indicated in fig. 14.
- Checking the lid seal
If seal "A" under head "D" has become slack, unscrew screws
"B" that lock fastening latches "C" in place and allow them
to slide downwards until lid "D" closes perfectly.
Now tighten locking screws"B".
Replace seal "A" - fig. 15 - if an optimum seal cannot be
obtained.
- Checking the tightness of filter chamber
If seal "A" - fig. 16 - between the container and filter chamber
"C" fails to guarantee tightness:
- loosen the four screws "B" that lock filter chamber "C"
against vacuum structure.
Allow filter chamber "C" to lower down and relock screws
-
"B" once it has reached the retention position.
The seal must be replaced if it is torn, cut, etc.
Replace seal "A" if the degree of tightness is still not opti-
mum.
- Cleaning and replacing the separator (fig.
17)
Note
If there is only a dust deposit on separator "D", allow the
dust to drop through the central hole.
Separator "D" should first be disassembled in order to be
perfectly cleaned:
- release lock fastening latches "A" and remove the head
"B";
- remove the filter;
- unscrew the two screws "C" and remove separator from
the container.
- Replace the part if excessively worn.
- Assemble separator "D" again.
- Lock it in position by screwing the two screws "C".
- Refit the filter and close head "B", locking it in place with
the two fastening latches "A".
10
09/2008