Pentair PR AQUA ROTOFILTER Installation And Operation Manual page 35

SECTION 9: MAINTENANCE
10. Pull the screen panel up until it clears the set
screw and flat bar, then slide out the panel from
underneath retainer bar. See Figure 25.
Figure 25. Removing the screen panel
11. After the first panel has been removed, remove
the retainer bar from the drum. The retainer
bar may be held in place by bolts or hex head
screws.
12. Once the retainer bar has been removed, the
second screen can be taken off. The screen
gaskets will be the only things remaining on
the drum periphery for this section of the drum.
Inspect screen gaskets whenever screen panels
are removed. We recommend replacing screen
gaskets anytime you remove screen panels.
13. Use a razor blade to gently remove the screen
gasket from the frame. Use acetone (or
equivalent solvent) to remove glue residue.
14. Remove all remaining screen gaskets from the
drum periphery. Repeat steps 1 through 13 for
other screen clamp sections.
15. After screen panels and gaskets are removed,
pressure wash the inside of the filter box,
drum, and solids trough. Wipe off and dry
drum periphery.
16. Use a socket wrench to remove the stainless
bolts securing the outer seal ring to the drum
seal. You may need to physically enter the drum
to reach the drum seal depending on the size
of the Rotofilter model. Use the drum frame to
support yourself. Never step on a screen panel.
See Figure 26.
Ensure the power to the Rotofilter
control panel is off, and the control
panel is locked out. Never enter the
Rotofilter drum with the power on.
Figure 26. Removing the drum seal
1: Drum Seal
2: Outer Seal Ring (bolted to seal and inlet)
3: Drum Seal Bolt
Rotofilter appearance may
NOTE
vary by model.
17. Remove the old seal.
18. Clean the outer seal ring by wiping it with a
clean cloth.
19. Inspect and clean the inlet trunnion before
installing the new seal. Apply anti-seizing
compound to the rivet nuts that will be used to
install the seal.
PR Aqua Rotofilter™ Drum Filter Installation and Operation Manual
35