Tank top return-line filter Pi 5000 NG 40-100
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10. Installation, operating and maintenance instructions
10.1 Filter installation
When installing the filter make sure that:
a) that sufficient space is available to remove filter element and filter
housing,
b) the mounting hole in the tank top is not excessively large, to ensure
proper sealing,
c) the filter is free of tension after installation
Preferably the filter should be installed with the filter housing pointing
downwards. Inthis position the visual pressure indicator is accessible
and visible.
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10.2 Connecting the electrical pressure indicator
The electrical pressure indicator is connected via a 2-pole appliance
plug according to DlN EN 17 5301-803 with poles marked 1 and 2.
The electrical section can be inverted to change from normally open
position to normally closed position or vice versa.
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10.3 When must the filter element be replaced?
1 .
Filters equipped with visual and/or electrical pressure indicator:
During cold starts, the indicator may give a warning signal.
Press the button of the visual indicator once again only after
operating temperature has been reached. If the red button im-
mediately pops up again and/or the electrical signal has not
switched off after reaching operating temperature, the filter ele-
ment must be replaced after the end of the shift.
2 .
Filters without pressure indicator:
The filter element should be replaced after trial run or flushing
of the system. Afterward folow instructions of the manufacturer.
3 .
Please always ensure that you have original MAHLE spare ele-
ments in stock: Disposable elements (Sm-x) cannot be cleaned.
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10.4 Element replacement
1 .
Stop system and relieve filter from pressure.
2 .
Unscrew cover, turning counter-clockwise.
3 .
Remove filter housing and filter element by pulling upwards.
4 .
Remove filter element with a side-to-side motion.
5 .
Clean the housing using a suitable cleaning solvent.
6 .
Check O-ring on filter cover and filter housing for damage. Re-
place, if necessary.
7 .
Make sure that the order number on the spare element corre-
sponds to the order number of the filter name-plate.
8 .
Remove filter element from the plastic bag and reassemble filter
in reverse order (items 1 to 6).
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Subject to technical alteration without prior notice.