Replacing The Support Wheels - Pentair PR AQUA ROTOFILTER Installation And Operation Manual

SECTION 13: SUPPORT WHEEL MAINTENANCE
13.4.2 Procedure
Always follow the proper shutdown procedure
(Section 8.2 or 8.3) before performing any
maintenance on the Rotofilter.
1. Shut off power to the Rotofilter control panel.
2. Lock out the control panel.
3. Position the hydraulic jack on the bridge under
the center of the drum. See Figure 59. Secure the
jack by using a clamp, cord or strap to prevent
the jack from accidentally falling into the drum
and damaging the screens.
Figure 59. Hydraulic jack placement
4. Raise the drum until the support wheels
turn freely, approximately 0.64 centimeters
(0.25 inches).
Lift only high enough to allow
wheels to turn. Excessive lifting
may warp the drum or damage
the drum seal.
5. Mark the location of the axle plate with a pencil,
then remove the bolts that secure the axle plate
assembly to bridge. See Figure 60.
Figure 60. Marking the support wheel
assembly location
6. Remove one support wheel assembly.
7. Secure support wheel assembly in a vice.
8. Remove the old wheel and clean the
axle assembly.

13.5 Replacing the Support Wheels

Follow this procedure only after completing the
steps in Section 13.4
Removing and replacing the support wheels
requires lifting the drum frame. The drum frame
can be extremely heavy, and in most cases will
require a bottleneck hydraulic jack to lift safely
and successfully.
PR Aqua Rotofilter™ Drum Filter Installation and Operation Manual
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