Hydraulic Controls - Pentair PR AQUA ROTOFILTER Installation And Operation Manual

SECTION 5: PRE-INSTALLATION
The bottom of the sump must be a solid, level
foundation. The location of the sump should be
determined based on service access and stability.
Minimum recommended service access is 92
centimeters (36 inches) on the inlet, drive assembly,
and spray bar assembly sides.
Figure 6. Minimum service clearance for right
(standard) and left service access units
1: Minimum Service Access (red area) - 96
centimeters (36 inches)
2: Spray Bar Assembly (can be connected at
opposite end)
3: Inlet (location may vary)
4: Drive Assembly and Motor
5: Outlet (location may vary)
Service access is required daily. The following are
some of the functions that require service access:
• Water level inspection
• Spray bar nozzle cleaning
• Inspection and maintenance of screen panels
• Inspection and maintenance of support wheels
• Inspection and maintenance of drum seal
• Inspection and maintenance of drive assembly
• Scheduled cleaning
The foundation must be sturdy, as the weight of
the Rotofilter can be extremely heavy when in
operation. The weight of the unit is listed on the
technical specification documents, or see Rotofilter
weights in Section 3.2
The area must be flat and level. Operating the
Rotofilter on an unleveled surface will cause
irreversible damage to the internal components,
will cause the unit to malfunction, and will void
the warranty.
A layer of self-leveling concrete should be applied
to the foundation and the consistency of the level
should be confirmed prior to Rotofilter installation.
Once this layer is applied, check that the foundation
surface does not differentiate more than 6.4
millimeters (0.25 inches) across the entire area.

5.5 Hydraulic Controls

The Rotofilter has no external flow controls,
therefore the inlet and outlet channels connected
to the unit must have fully functional flow controls
located at or near the unit. These controls should
be installed prior to installation of the Rotofilter. The
type of controls will depend on the inlet and outlet
channels at the installation site.
Control of the inlet and outlet water levels are
critically important to maintaining proper water
levels inside and outside of the Rotofilter. These
water levels should never exceed the limits
identified by Pentair.
Figure 7. High water level differential inside
and outside of the drum
1: Water Level Inside Drum
2: Outlet (Level Control) Weir
3: Outlet
4: Water Level Differentia
PR Aqua Rotofilter™ Drum Filter Installation and Operation Manual
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