Upstream Hepa Filter Replacement; Motor Cooling Fan Inspection And Cleaning; Tightness Inspection; Separator Cleaning And Replacement (Optional) - Nilfisk CTS22 Manuel D'instructions

Upstream HEPA filter replacement

Figure 16
1. Filter shaker stop
2. Filter operating knob
3. Cover
4. Lever
5. Safety bolt
6. Stop nut (absolute filter)
7.
Absolute filter holder disc
8. Primary filter
9. Clamp fixing screw
10. Primary filter fixing clamp
11. Absolute filter
12. Vacuum hose
13. Vacuum hose clamp
■ Stop the vacuum cleaner.
■ Loosen the clamp (13) with a screwdriver and remove
the vacuum hose (12).
■ Unlock the filter shaker stop (1).
■ Unscrew the knob (2).
■ Unlock the safety bolt (5).
■ Use the lever (4) to remove the cover (3).
■ Loosen the screw (9) of the primary filter (8) fixing clamp
(10) using a screwdriver.
■ Remove the filter holder disc (7) with the absolute filter
installed and unscrew the nut (6).
■ Remove the absolute filter (11).
■ Cover the absolute filter (11) with a plastic bag, close
the plastic bag hermetically and dispose of the filter in
accordance with the laws in force.
■ Insert a new filter (11) with the same filtering
characteristics as the removed one.
■ Lock the absolute filter with the nut (6).
■ Tighten the clamp (10) screw (9) fixing the primary filter
(8) to the absolute filter holder disc (7).
■ Insert the the cover (3) again.
■ Close the cover hermetically by means of the lever (4) and
lock the safety bolt (5) again.
■ Tighten the knob (2) and lock it using the filter shaker
stop (1).
■ Fit the vacuum hose (12) back in place and tighten the
calmp (13).
[ NOTE ]
If the vacuum cleaner is ATEX-IECEx variant: perform
galvanic continuity tests as shown in the relevant manual.
Standard EN 60335-2-69 prescribes inspections at regular
intervals or after repairs or modifications.
07/2018
CTS22 / CTS22 L-M-H / CTS40 L-M-H / CTT40 L-M-H / CTT40 IECEx

Motor cooling fan inspection and cleaning

These operations can only be carried out by trained
and qualified personnel
Periodically clean the motor cooling fan to prevent the motor
from overheating, especially if the vacuum cleaner is used in
a dusty place. (See Fig. 5)

Tightness inspection

Hoses check
Make sure that connecting hoses (1, Fig.17 for CTT models
and 2, Fig. 17 for CTS models) are in a good condition and
correctly fixed.
If the hoses are damaged, broken or badly connected to the
unions, they must be replaced.
When sticky materials are treated, check for possible clogging
along the hose (3, Fig. 17), in the inlet and on the baffle plate
inside the filtering chamber.
Scrape inlet (3, Fig. 17) from the outside and remove the
deposited waste as indicated in figure 17.
Filtering chamber tightness check
If the gasket (1, Fig. 18) between the container and the
filtering chamber (3) fails to guarantee tightness:
■ Loosen the four screws (2) that lock the filtering chamber
(3) against the vacuum cleaner structure.
■ Allow the filtering chamber (3) to lower down and tighten the
screws (2) once it has reached the tightness position.
The gasket must be replaced if it is torn, cut, etc.
Replace the gasket (1) if the degree of tightness is still not
optimum.
Separator cleaning and replacement
(optional)
If there is only a dust deposit on the separator (3, Fig. 19)
allow the dust to drop through the central hole.
The separator (3, Fig. 19) should first be disassembled in
order to be perfectly cleaned:
■ Use the lever (1) to remove the cover (2) together with
the primary filter.
■ Unscrew the two screws and remove it from the
container.
Replace the part if it is excessively worn.
Assemble the components in the reverse order of
disassembly.
13
WARNING!
[ NOTE ]
GB
C313