BOLLFILTER
TYPE-6.48: FILTER CLEANING PROCEDURE:
Preparatory work
Preparatory work
1.0 Take the plant out of operation or open
the shut-off valves of the by-pass line.
2.0 Close the shut-off valves on the
connection lines. Secure the shut-off valve to prevent it from being switched
on unintentionally.
3.0 Drain the filter. Carefully open the drain
hole.
4.0 Close the drain hole.
5.0 Unfasten the threaded connector on the
cover.
6.0 Lift the cover off the housing.
Figure: Top cover removing |
Removing
the filter insert with filter candles
1.0 Pull the
filter insert, including the flushing arms and the cog wheel, out of the housing
towards the rotary axis of the flushing arm shaft.
Figure: Backflushing arm removing |
2.0 Allow the filter insert to drip
dry in a suitable container.
3.0 Unfasten the screws on the top flushing arm and
remove the flushing arm from the flushing arm shaft by pulling it upwards. For
secure fastening, use one of the screws (1) as a jacking bolt, whereby you
screw it into the free threaded hole and tighten lightly.
4.0 Remove the cover plate after
unfastening the screws.
Figure: Back flashing arm |
5.0 Carefully push or pull all filter
elements out of the filter insert using the filter candle removing tool.
6.0 Place the filter elements in a container
of cleaning agent.
7.0 Remove loose particles which float on the
top of the cleaning agent during the soaking stage.
8.0 Clean the individual filter elements over
the entire length, from the outside to the inside, using a high-pressure
cleaner. When using a rotary nozzle for cleaning, the filter elements can be
cleaned from the inside to the outside by inserting the cleaning lance into the
filter candle and moving it up and down. Always hold the filter elements so
that the soiling can run off unhindered.
9.0 Then rinse out the filter elements in
fresh cleaning agent.
10.0 Allow the filter elements to dry with one
opening pointing downwards or blow the filter elements dry with compressed air.
11.0 Then check all filter elements for damage.
Replace any damaged filter elements or seals as necessary.
12.0 Remove any soiling from the other
components of the filter element before inserting the filter insert.
Figure: Filter Candle |
13.0 Insert the cleaned filter elements into
the filter insert from above with the chamfered end first and push the filter
elements all the way into the filter insert. Make sure you do not damage the
filter elements as you do so.
14.0 Make sure that the seals are properly in
place.
15.0 Re-assembly is performed by repeating the
steps for disassembly in reverse order.
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