Main Components Of The Duplex Filter; Operating Principle Of The Duplex Filter - Filtration Group Pi 370 Betriebsanleitung Und Montageanleitung

6.2 Main components of the duplex filter

1
2 1
1 3 1
4
5
12
6
7
Fig. 2: Diagram of the main components
1 Maintenance indicator (optional)
2 Vent screw (filter 1)
3 Inlet
4 Filter head
5 Switch-over handle with integrated pressure
compensation lever and safety catch
6 Filter housing (filter 1)
7 Drain plug on dirty side (filter 1)
(standard with NG 250, 300, 400 and 450, optional
with NG 40 - 160)
8 Drain plug on dirty side (filter 2)
(standard with NG 250, 300, 400 and 450, optional
with NG 40 - 160)
9 Filter housing (filter 2)
10 Outlet
11 Vent screw (filter 2)
12 Filter element (filter 1)
13 Filter element (filter 2)
Translation of the original instructions with installation instructions Pi 370 / Pi 3700, Filtration Group GmbH, 28.06.2020, Mat. No. 72412144, Version 06

6.3 Operating principle of the duplex filter

11
10
13
9
Fig. 3: Operating principle
1
8
Dirty fluid flows in through the inlet.
2
The medium is guided to the left or right filter side,
depending on the position of the switch-over handle. The
lever position indicates the non-operational filter side.
3
The fluid flows through the filter element to the clean side.
4
The filtered fluid exits the duplex filter via the outlet.
5
When a maximum differential pressure is reached, the
switch-over handle must be shifted to the other side and
the dirty filter element replaced with a new FG element.
Wire cloth elements* can be cleaned (refer to
section 13.6).All other elements must be exchanged and
disposed of correctly.
The filtration process does not need to be interrupted.
Optional
If a maintenance indicator is used, a signal is output when
the maximum differential pressure is reached.
* Wire cloth filter elements are not used to filter fuels in
maritime applications. Section 13.6 is only relevant if you
are using wire cloth elements!
1
2
3
4
Page 5