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Translation of the original instructions with installation instructions Pi 370 / Pi 3700, Filtration Group GmbH, 28.06.2020, Mat. No. 72412144, Version 06
13.3 Inspection and maintenance schedule
•
Refer also to the contract documentation.
The inspection and maintenance schedule should be
fixed individually by the owner.
The necessary inspection and maintenance
work is dependent on the particular
application.
Please consult the plant manufacturer if
necessary.
13.4 Replacing the filter element
DANGER!
The filter is pressurised!
First relieve the pressure!
Then open the filter!
DANGER!
Risk of injury!
The element is only allowed to be replaced on the
non-operational filter side.
CAUTION!
Keep all impurities away from the clean side of the
filter element.
Be careful not to damage the wire cloth of the
elements or the inside with sharp or pointed objects.
1
The direction of fluid flow is determined by the
position of the marking on the switch-over
handle (refer to Figure 7).
Operate the switch-over handle (5) and shift it to the
required position:
- Switch-over handle in position A: filter 1 (F1) is
deactivated while filter 2 (F2) is activated.
- Switch-over handle in position B: filter 2 (F2) is
deactivated while filter 1 (F1) is activated.
- The switch-over handle indicates the deactivated filter.
- Switch-over handle in position C: fluid flows through
both filters (F1 and F2).
Fig. 7:
Switch-over handle positions
Make sure the switch-over handle (2) is set to the
required position, so that it contacts the stop and is
locked by the safety catch.
The filter side on which the element must be replaced is
sealed off.
CAUTION!
Danger
if fluids leak!
Never operate the switch-over handle while carrying
out maintenance work!
Wear protective clothing and equipment appropriate to
the hazard potential of the medium (e.g. eye protection,
respirator, protective clothing, etc.).
2
Place a trough or a drip pan underneath the unit.
Open the vent screw (2) at least one turn.
3
Open the drain plug on the dirty side (7) (if any).
The filter is discharged.
Fig. 8:
Discharging the filter
4
Unscrew the filter housing (6) clockwise.
Pull the filter housing down a hand's breadth.
Unscrew the filter element (12) from the seat.
Remove the filter element together with the filter
housing.
A
C
B
F1
F2
1
5
2
6
7
12
