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Operation and maintenance, Discfilter HPF2200-series PFLC
8. MAINTENANCE SCHEDULE
Check/Action
Maintenance interval
Check whether the wash water filter is clogged. See
section 7.2.
The interval is based on experience from the app-
lication in question. (When the backwash water
pressure drops 0.5 bar below the normal value.)
Check the filter panels for clogging and damage.
See section 7.4.
Once a week or another interval based on expe-
rience from the application in question.
Inspect the inside of the filter: Make sure no lar-
ge objects that can get caught in the drum, filter
segments or sludge trough have entered the filter.
Also check that the reject does not accumulate (se-
diment) in the sludge trough.
NB Prior to servicing, read section 2.7. Remove large
objects and rinse the sludge trough.
WARNING! Turn the main power switch to
the OFF position and lock in the OFF posi-
tion with a padlock.
Once a week or another interval based on expe-
rience from the application in question.
Rinse the metal surfaces of the filter structure with
clean water. Clean (uncontaminated) metal surfa-
ces minimise corrosion, particularly in salt water
applications.
Twice a month or another interval based on expe-
rience from the application in question.
Check the nozzles with respect to clogging. See se-
ction 7.1.
Twice a month or another interval based on expe-
rience from the application in question.
Lubricate the swivel to the backwash pipe using
grease of the type NLGI:2 (e.g. Molykote Multilub,
Rembrandt EP or equivalent grease). See section
7.3.1.
Twice a month with continuous drum rotation.
Once a month with intermittent drum operation.
Lubricate the drum bearings (on the inlet and drive
side) using grease of the type NLGI:2 (e.g. Molykote
Multilub, Rembrandt EP or equivalent grease). See
section 7.3.2.
Twice a month with continuous drum rotation.
Once a month with intermittent drum operation.
Check drive chain tension and condition. See sec-
tion 7.5.1
Four times a year with continuous drum rotation.
Twice a year with intermittent drum rotation.
Check the drive unit’s oil level. See section 7.6.
Twice a year.
Check the wear on the drum bearing. See section
7.3.3.
Once a year.
Check the inlet gasket. See section 7.7.
Once a year.
Change the gearbox oil. Oil type: ISO viscosity VG
680 (e.g. Omala oil 680 (Shell) or equivalent gear-
box oil). Also see Appendix D.
See Appendix D.