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Translation of the original instructions with assembly instructions AF 172 G2, Filtration Group GmbH, 09.12.17, Mat. No. 70355433, Version 05
5
Intended application
DANGER!
PROHIBITED:
•
Use for other purposes without prior consultation with
the manufacturer.
•
Use in potentially explosive atmospheres, unless
explicitly mentioned in the contract documentation.
•
Use with smouldering, burning or adhesive particles.
•
Use with highly explosive dusts (e.g. aluminium dust,
explosives, etc.).
CAUTION!
This FG automatic filter is only allowed to be used in
accordance with the operating conditions specified in the
contract documentation and in the Instruction Manual. All
forms of use which deviate from or exceed the limits of
use described above are considered to be contrary to the
intended purpose. The manufacturer shall not be liable
for any damage resulting from such use.
CAUTION!
Conditionally allowed:
•
Use of solvents in consultation with the manufacturer.
FG automatic filters are designed for filtering solids out of
low-viscosity liquids.
Main applications:
•
Cooling lubricant filtration
•
Product filtration
•
Preseparation in a filter cascade
•
Protective filtration before or after certain process steps
•
Process filtration
•
Destruction of unwanted agglomerates
6
Functional description
6.1
Process principle of the AF 172 G2
The tangential inflow between a preseparator tube and the
filter housing causes coarse and heavy particles in the
suspension to be sedimented into the collection cone. This
relieves the load in the segmented element.
When the liquid flows inward through the segmented
element, the particles contained in the suspension settle on
the filter medium, where they create a differential pressure.
The segmented element is cleaned when the preset
differential pressure is reached or after a defined time
interval has elapsed.
The segmented element is turned past the pressure channel
housing and the backflush channel by the gear motor. The
external pressure valve and the backflush valve are opened.
The particles are removed from the filter medium one
segment at a time by the external pressure cleaning action
and guided out of the filter through the backflush channel.
Fig. 1:
Separating and cleaning principle on the
segmented element
To start a cleaning process
A cleaning process can be started in the following ways:
•
Manually
•
By means of a differential pressure switch
•
By means of a time switch
•
By means of a higher-level controller
Filter medium
Core
element
Pressure
channel
housing
