Pentair PR AQUA ROTOFILTER Installation And Operation Manual page 37

SECTION 9: MAINTENANCE
26. Remove any grease or oil from the drum that will
affect screen gasket adhesion. Wipe thoroughly.
27. Ensure the drum is dry. Gasket will not adhere
properly if moisture is present.
28. Gasket forms a watertight seal between the
screen panel and the drum frame due to the
pressure of the screen clamps. Therefore, the
gasket must be applied to the areas of the
drum frame that align with where the screen
clamp will press on the screen panel. It may
be beneficial to hold the screen clamp over the
drum frame to see where the contact will occur.
29. Apply the screen gasket to all the
circumferential sections of the drum. See Figure
31. Circumferential sections are the rounded
sections of the drum. The drum may be light
enough to rotate by hand. If the drum is too
heavy, rotate the drum in Manual Mode.
Use extreme caution when
performing maintenance that
requires drum rotation. Rotating
parts can cause severe injury or death. Always shut
off power after rotation. Do not leave the power on
when performing any maintenance procedures.
Figure 31. Applying circumferential gasket
The gasket must align with the
screen clamp in order to function
properly. The pressure of the
screen clamp on the gasket creates a watertight
seal. Apply gaskets with care.
30. Apply gaskets to the drum channels. See
Figure 32. The drum channels are the sections
between the circumferential gaskets.
Figure 32. Applying channel gasket
31. Use a razor blade to cut the gasket so it firmly
abuts the circumferential gasket edge and
creates tight joints. See Figure 33. Rotate the
drum to access the remaining portions of
the drum.
Figure 33. Creating tight gasket joints
32. Replace the retainer bar on the rear drum
channel using the bolts and new nylocs. Use
anti-seizing compound on all fasteners. Hand-
tighten the nylocs. Fasteners may also be hex
head screws.
Do not reuse nyloc fasteners.
Nylocs are no longer effective after
being removed.
PR Aqua Rotofilter™ Drum Filter Installation and Operation Manual
37