Nilfisk CTS40 Manuel D'instructions page 35

Primary filter cleaning with electric filter shaker
According to the quantity of vacuumed material, if the vacuum
gauge pointer goes from the green zone to the red zone, shake
the primary filter by pressing the electric filter shaker button for
10 ÷ 15 seconds.
CAUTION!
Stop the machine before using the filter shaker.
Do not shake the filter with the machine functioning, as
this could damage the filter.
Wait before restarting the machine, to allow the dust to settle.
Replace the filter element if the vacuum gauge pointer stays
in the red zone even after the filter has been shaken (see
"Primary and absolute filters disassembly and replacement").
[ NOTE ]
If the indicator is still in the red area. The vacuum hose or
one of the accessories may be clogged, and not the filter.
Clean these parts if this is the case.
Primary cartridge filter cleaning with automatic
system
Figure 8
1. Filter cleaning solenoid valve 1
2. Filter cleaning solenoid valve 2
3.
Filter cleaning solenoid valve 3
4. Filter cleaning solenoid valve 4
5. Cartridge container pressure switch
When it is necessary to vacuum very fine dust continuously
without stopping to clean the filters, the Manufacturer provides
the machine of a multi-cartridge filtering system.
The unit is equipped with a fully automatic electropneumatic
device to alternately clean the filtering cartridges, which
guarantees continuous service.
Electric panel, powered with a 24V rating, is complete with
cyclic timer to regulate the following times:
T1 Filter cleaning time
Opening time of the solenoid valve for backwashed air exhaust
into the cartridge.
The shorter the time, the more energetic the cleaning action
will be.
T2 Work hold time
Time between one cartridge cleaning operation and the next.
T3 Time between cleaning cycles
Time between one cleaning cycle and the next.
Check the arrows on the knobs of the timer for the exact
regulation.
Replace the filter element if the vacuum gauge pointer stays
in the red zone even after the filter has been shaken (see
"Primary and absolute filters disassembly and replacement").
[ NOTE ]
If the indicator is still in the red area. The vacuum hose or
one of the accessories may be clogged, and not the filter.
Clean these parts if this is the case.
Primary cartridge filter cleaning with infiniclean
system
The filtering cartridges serve the purpose of filtering the intake
air. The vacuum cleaner is equipped with solenoid valves that,
by deflecting the air coming out of the blower, allow for cyclic
cleaning of the filtering cartridges. The fully automatic system
grants work continuity and is driven by a cyclic timer that allows
to adjust the intervals T0, T1, T2 which define the cleaning
cycle.
The factory setting of the cycle intervals is the one
that allows for a better cleaning in the majority of
applications, for this reason the factory setting should
not be modified. If necessary, for heavy applications
(for example, to collect heavy quantities of very thin
dust - more than 3 kg per minutes), it is possible to
modify the intervals by following the instructions in the
Service Manual, available at the Manufacturer's Service
Centre.
Replace the filter element if the vacuum gauge pointer stays
in the red zone even after the filter has been shaken (see
"Primary and absolute filters disassembly and replacement").
If the indicator is still in the red area. The vacuum hose or
one of the accessories may be clogged, and not the filter.
Clean these parts if this is the case.
Container and dust bag cleaning
Emptying the container
Before proceeding with these operations, turn off the
machine and remove the plug from the power socket.
Check the machine filtration class.
Before emptying the container it is advisable to clean the filter
(see "Cleaning the primary filter" paragraph).
■ Release the dust container (2) with the lever (3), then
remove and empty it.
■ Clean the machine as described in the "Maintenance,
cleaning and decontamination" paragraph.
■ Wash the container with clean water if aggressive
substances have been vacuumed.
■ Make sure the gasket is in perfect condition and correctly
positioned.
■ Place the container back in position and secure it again.
After the cleaning session, leave the machine running for at
least 60 seconds before turning it off.
Avoid switching on/off too frequently.
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CTS22 - CTS40 - CTT40
CAUTION!
[ NOTE ]
CAUTION!
Figure 1
[ NOTE ]
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