Low Pressure Filter Pi 150 up to NG 630 6
10. Installation, operating and maintenance instructions
10.1 Filter installation
When installing the filter make sure that sufficient space is available
to remove filter element and filter housing.
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10.2 Connecting the electrical maintenance indicator
The electrical indicator is connected via a 2-pole appliance plug ac-
cording to DlN EN 175301–803 with poles marked 1 and 2. The elec-
trical section can be inverted to change from normally open position
to normally closed position or vice versa.
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10.3 When should the filter element be replaced?
1 . Filters equipped with visual and electrical maintenance indicat-
or:
During cold starts, the indicator may give a warning signal.
Press the red button of the visual indicator once again only after
operating temperature has been reached. lf 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 maintenance indicator:
The filter element should be replaced after the trial run or flush-
ing of the system. Afterwards follow instructions of the manu-
facturer.
3 . Please always ensure that you have original Filtration Group
spare elements in stock: Disposable elements (PS, Sm-N, Mic)
cannot be cleaned.
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10.4 Element replacement
1 . Stop system and relieve filter from pressure.
2 . Loosenquick-actionclamp(10bar version) or screwsofflanged
cover,remove cover,and opendrain valve.Housing completely
vented.
3 . Remove filter element from the filter housing.
4 . Check seal for damages, replace if necessary.
5 . Make sure that the order number on the spare element corres-
ponds to the order number of the filter name-plate.
Remove the plastic bag and push element over the spigot in the
filter head.
6 . 10 bar version: Close drain valve, relocate cover, and close the
quick-action clamp. Filters are automatically vented via the air
bleeder valve, the protection cap S has to be turned 2 times for
being open.
7 . 25 bar version: Close drain valve, and put the cover plate on
so that the stud bolts go into the holes of the cover plate. Make
sure not to squeeze the O-ring on the bottom side of the cover
plate. Hand-tighten the 8 mounting nuts with spring rings. Then
drawupthenutstightcrosswisewithaturn-screwSW19without
canting the cover plate. Tightening torque for mountings nuts is
50 Nm. After bringing the hydraulic unit to service de-aerate the
filter via vent-screw.
