MAINTENANCE
WB140-2N, WB150-2N 3-57
To change the safety cartridge, after removing the primary element, pro-
ceed as follows:
1. Remove safety cartridge (6) and replace it with a new one.
2. Once safety cartridge (6) has been installed inside filter case (4),
make sure that it is perfectly seated in its housing.
3. Reassemble the unit as described above, making sure that all filter
components are perfectly locked.
4. Push safety lock (1) towards the inside.
CHECKING AND CLEANING CAB AIR FIL-
TERS
Air suction for ventilation of the cab is protected by a filter positioned
on right side of the cab. This filter blocks all impurities contained in the
air and must be cleaned whenever a decrease in air circulation is
observed.
The filter can be reached from outside of the cab. To clean the filtering
element, proceed as follows:
1. Remove screws (1), remove external protection (2), and remove fil-
ter element (3).
2. Tap element lightly on the palm of your hand to remove dust. Blow
compressed air on its surfaces, keeping the jet at a distance of about 15 cm (5.9 in), making sure that pressure does not
exceed 4-5 bars (58-73 psi).
3. Carefully clean the filter casing, taking care to prevent any foreign debris from entering the suction duct, and then reas-
semble the unit.
• Always wear safety goggles during cleaning operations.
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