Pentair P1-102 User manual

Star™
Thermoplastic Regenerative D.E. Filter
By Pentair Pool Products®
Diatomaceous earth (D.E.) removes particles that are so small
they are individually undetected by the human eye, but
combine to decrease water clarity. Star™ D.E. filters remove
these microscopic contaminants so your water achieves the
glass-like clarity only D.E. can deliver.
Plus, Star filters help maintain themselves. An exclusive
“pre-cleaning” feature enables the filter to dislodge trapped
dirt and D.E. particles from the filter. A few turns of a knob is
all it takes to “regenerate” the media inside the filter so it is able
to provide extended service before periodic cleaning is required.
Other key features include:
●Refined hydraulic design minimizes flow restrictions so the
least amount of pumping power produces the optimum
flow rates—for lower utility costs.
●
All system components manufactured from the most durable
and maintenance-free engineered materials for years of service.
●Time-proven vertical media grids with 2-inch spacing provide
the most efficient use of D.E. per cycle—trapping more dirt
for cleaner water and longer cycle times between cleanings.
●Exclusive, rotatable grid assembly lifts out easily for any
required service.
Particle Filtration Comparison
Greatest water clarity with least possible attention
D.E. Filter
Less than 5 Microns
Cartridge Filter
10–30 Microns
Sand Filter
20–100 Microns

Model Filter Vertical Filter D.E. Required Flow Rate Turnover Capacity (Gallons)
Number Area Sq. Ft. Clearance* Diameter (Lbs.) GPM** 8hrs. 10hrs. 12hrs.
ST 35 7.6 38" 12" 3 35 16,800 21,000 25,200
ST 50 11.4 50" 12" 4 50 24,000 30,000 36,000
ST 80 15.2 63" 12" 5 80 38,400 48,000 57,600
* Required clearance to remove filter elements
** Maximum flow rate
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Star™ Thermoplastic Regenerative D.E. Filter
©2007 Pentair Water Pool and Spa, Inc. All rights reserved.
6/07 Part #P1-102
Available from:
pumps /filters /heaters /heat pumps /automation /lighting /cleaners /sanitizers /maintenance products
Easy view pressure gauge
Rotating knob allows quick and easy “bump
and swish regeneration” of filter to extend
time between full cleanings
Stainless steel clamp is easy off, easy on and
lasts for years
Tank is molded from advanced, corrosion-proof
thermoplastic for strength and long life
Keeping your Star™ D.E. filter running right takes little time and
couldn’t be simpler, thanks to a number of user-friendly features.
●Premium stainless steel clamp permits quick and easy access
to internal components.
●Easy to remove, oversized drain plug allows rapid draining
when cleaning.
●Unique check valve is built into filter inlet port to prevent
backflow of D.E. powder into pump—a life-extending
improvement over competing filters.
●One-year limited warranty. See warranty for details.
Crystal water clarity has
never been easier
How a D.E. Filter Works
When diatomaceous earth (D.E.) is introduced into the filter system,
it coats the filter cloth. As water passes over the filter grids, the D.E.
particles capture even the smallest suspended dirt particles. When
cleaning is needed, the water flow is simply reversed and contaminants
are backwashed away.