Operation Of The Filtering Cartridges; Primary Filter Cartridge Replacement - Nilfisk T75 Manuel D'instructions

T75

Operation of the filtering cartridges

15. Electropneumatic device
16. Filter cartridges
17. Timer
The filtering cartridges (16) serve the purpose of filtering
the intake air. The vacuum cleaner is equipped with a fully
automatic electropneumatic device (15) to alternately clean
the filtering cartridges (16), which guarantees continuous
service.
Powered with a 24V rating, is complete with cyclic timer (17)
to regulate the following times:
T3= time between one cleaning cycle and the next, set on 0
seconds;
T2= time between one cleaning operation of the cartridge (16)
and the next, set on 20 seconds;
T1= opening time of the solenoid valve for backwashed
air exhaust into the cartridge, set at 2 ÷ 3 tenths of a
second. The shorter the time, the more energetic the
cleaning action will be.
Check the arrows on the knobs of the timer (17) for the
exact regulation.
Factory setting should not be changed if without prior
authorization
The three solenoid valves of the electropneumatic device
control the cleaning of the relative filter cartridges.
1.
Filter cleaning solenoid valve E1
2. Filter cleaning solenoid valve E2
3. Filter cleaning solenoid valve E3
GB
C360
Figure 14

Primary filter cartridge replacement

1. Vacuum hose
2. Clamp
3. Cap
4. Release lever
5.
Filter ring
6. Cartridge assembly
7. Power supply cable
8. Air intake coupling
9.
Junction
10. Connector
11. Screws
12. Screws
13. Washer
14. Cartridges
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
laws in force.
Before performing these procedures, turn off the machine
and remove the plug from the power socket, disconnect the
compressed air supply by emptying the air tank inside the
machine.
■ Loosen the clamp (2).
■ Remove the vacuum hose (1).
■ Operate the levers (4).
■ Remove the cover (3) and the filter ring (5).
■ Disconnect the power supply cable (7) and the
compressed air supply from the air intake coupling (8).
■ Remove the cartridge assembly (6).
■ Disconnect the connectors (10) and the union (9).
■ Disassemble the air tank by operating on the screws
(11).
■ Disassemble the cartridges by operating on the screws
(12) and washers (13).
■ Assemble the new cartridges.
■ Install the cartridge assembly in the in the reverse order
of removal.
■ Dispose of the old filters according to the laws in force.
If necessary contact the manufacturer's Service Centre.
10
Figure 14
WARNING!
07/2018