Weir Warman 650 M200-MCR-G, Руководство пользователя, Страница: 267 / 287

fluidtech
double filter 4.225
F
F
R
R
I
I
E
E
D
D
R
R
I
I
C
C
H
H
S
S
F
F
I
I
L
L
T
T
E
E
R
R
S
S
Y
Y
S
S
T
T
E
E
M
M
E
E
G
G
M
M
B
B
H
H
P.O. Box 1248
·
41846 Wassenberg • Phone +49/2432/96600 • FAX +49/2432/966090
11
6.3 Maintenance
The filter unit must be maintained by competent personnel at regular intervals to ensure leak
tightness and proper filtration results in the long run, despite mechanical, chemical and ther-
mal stress imposed upon the filter.
Considering operating conditions and experiences, the operator of the plant has to lay down
instructions for necessary inspection and maintenance procedures.
Normally, maintenance is limited to examining the gaskets for mechanical damages, which
should be carried out each time the filter elements are cleaned / replaced or at least once per
year. Since the gaskets are subjected to static stress only, replacement is seldom necessary.
In case the change-over lever has been removed during maintenance works, correct align-
ment must be ensured when refitting on the square-end of the rotary slide valve (see
illustration 5-1)
Every time a filter element has been cleaned, it should be examined for mechanical dam-
ages. As the filter medium (generally wire mesh) is arranged exclusively on the outside of the
filter element, this can be carried out be performing a thorough visual inspection.
Damage (such as cracks and holes) to the filter medium is normally caused by improper
handling and is readily identifiable. Pleats that are just deformed are not necessarily defec-
tive.
A magnifying glass or a microscope and good illumination may, of course, be helpful.
All damaged or used parts (e.g. worn out or twisted bolts and nuts, damaged gaskets, etc.)
must not be used any longer and are to be replaced by new ones.
7 Additional documentation (s. supplements)
•
Technical Data Sheet for Type Series 4.225 Double Filter
•
Documentation for Differential Pressure Indicator Type Series 5.02
B 5922 EN 04.10
11/16