MP Filtri UFM Series, Руководство по эксплуатации и обслуживанию

Страница: 86 / 136

6.6 Filter clogging
- Versions with visual differential clogging indicator
UFM091TA2020P01
The conditions relating to the blockage of the filter element are guaranteed by a visual indicator (Fig. 22) mounted on the head
of the LMP430 filter. When the differential pressure of 3 bar is reached, the red alarm piston is visible. Replace the filter element.
- Versions with electric/visual differential pressure indicator for blockage
UFM091TA3020P01 - UFM091TA3021P01
The conditions related to the blockage of the filter element are ensured by an electric indicator (Fig. 23) mounted on the head of
the LMP430 filter. When the differential pressure of 3 bar is reached, the electric signal switches off the machine and turns on the
light on the electrical panel. Replace the filter element.
All models are equipped with a pressure gauge (Fig. 24) with 10 bar full scale to measure the circuit pressure.
For signalling the clogged filter, refer to the differential pressure indicators.
The LMP430 filter is equipped with a bypass valve with a response pressure set at 3.5 bar.
It is recommended to never exceed the response pressure of the bypass valve (3.5 bar).
CAUTION
!
Version with visual/electric
indicator
Pressure gauge Version with visual
indicator
Fig.22 Fig.23 Fig.24
6.6.1 Replacing the filter element
Before proceeding with the replacement of the filter element, make sure that the oil temperature is lower than +40/45° C.
Replace the filter element whenever necessary, i.e. whenever the differential pressure indicator indicates a clogged filter or when
different fluids must be filtered.
The filtration of the filter element takes place from the outside to the inside, drain the residual oil into the body as it is not normally
clean.
The oil must always be emptied using the drain valve (Fig. 25) located at the base of the filter body, clean the inside of the container.
Mobile filtration unit
84