Filter element replacement
•
Where appropriate, close shutoff valves at gas inlet and
outlet.
•
Depressurize the housing.
•
Undo blank flange. You can use the last flange screw as
a pivot. The blank flange is then simply turned aside to
provide full access.
•
Subsequent to the loosening of two nuts and a slight turn
in clockwise direction, the filter elements, along with the tie
rod unit, may be completely removed from the housing.
•
Unscrew the filter elements counter-clockwise from the
tierod unit .
•
Replace the o ring of the tie rod unit.
•
Screw new filter elements onto the threaded rod (fingertight
4,7 Nm, without tools) and place unit into the housing.
Retighten the nuts in order to secure the tie rod unit.
•
Grease flange gasket slightly using Molykote.
•
Fit blank flange.
•
Slowly admit pressure to the filter by gradual ope-ning of
the shutoff valves.
•
Make a note of the date of the next element replacement
on the housing, the maintenance sche- dule and the label
supplied with the elements. Stick the label on a part of the
filter housing where it can easily be seen. Re-order new
elements and, where appropriate, a new float-type drain
to ensure an adequate stock of spare parts.
CLEARPOINT L100 - L304
english
Accessories
Differential-pressure gauge
Differential-pressure gauges are used to determine the condi-
tion, i.e. the degree of fouling, of the filter elements. The scaling
on the display field also allows an energy cost analysis.
The FDPS differential-pressure gauge has two pressure
chambers which are separated by a membrane. One chamber
relates to the pressure upstream, the other one to the pres-
sure downstream of the filter element. Any existing pressure
difference changes the position of the membrane and thus the
position of the magnetic piston. The piston's changed magnetic
field is transferred to the pointer without friction. Measuring
system and indicating system are separate from each other.
Therefore, the indicating system functions without pressure,
and contaminants from the gas side cannot soil the display field.
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