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SYSTEM 3

®

HIGH RATE SAND FILTERS

O   W   N   E   R ’   S   M   A   N   U   A   L

INSTALLATION, OPERATION & PARTS

MODELS

S7S50              S8S70

This manual should be furnished to
the end user of this filter; its use will
reduce service calls and chance of 
injury and will lengthen filter life.

Pentair Water Pool and Spa, Inc.

© 2007 Pentair Water Pool and Spa, Inc. 

All rights reserved.  This document is subject to change without notice.

1620 Hawkins Ave., Sanford, NC 27330 • (919) 566-8000
10951 West Los Angeles Ave., Moorpark, CA 93021 • (805) 553-5000

Trademarks and Disclaimers:

System 3

®

, Sta-Rite

®

and Pentair Water Pool and Spa

®

are trademarks and/or registered trademarks of Pentair Water Pool

and Spa, Inc. and/or its affiliated companies in the United States and/or other counties.  Unless noted, names and brands of
others that may be used in this document are not used to indicate an affiliation or endorsement between the proprietors of
these names and brands and Pentair Water Pool and Spa, Inc. Those names and brands may be the trademarks or regis-
tered trademarks of those parties or others.
Printed in U.S.A.

November 1, 2007

S282 

(Rev. A)

Protected by one or more of the following U.S. Patents and all corresponding foreign counterparts: U.S. Pat. No. 4,995,523, 5,190,651, 5,753,071 and 6,036,853

Summary of Contents for System 3

Page 1: ...aimers System 3 Sta Rite and Pentair Water Pool and Spa are trademarks and or registered trademarks of Pentair Water Pool and Spa Inc and or its affiliated companies in the United States and or other counties Unless noted names and brands of others that may be used in this document are not used to indicate an affiliation or endorsement between the proprietors of these names and brands and Pentair ...

Page 2: ...W SAFETY IN STRUCTIONS This is the safety alert symbol When you see this symbol on your valve or in this manual look for one of the following signal words and be alert to the po tential for personal injury DANGER warns about hazards that will cause serious personal injury death or major property damage if ignored WARNING warns about hazards that can cause serious personal injury death or major pro...

Page 3: ...r in system before testing Tighten Sta Rite pump trap lids to 30 ft lbs 4 1 kg cm torque for testing Water pressure for test must be less than 25 PSI 172 kPa Water temperature for test must be less than 100 F 38 C Limit test to 24 hours After test visually check system to be sure it is ready for operation Remove pump trap lid and retighten hand tight only NOTICE These parameters apply to Sta Rite ...

Page 4: ...008 liters 40 800 Gal 154 428 liters Qty of Media Required Cu Ft 2 56 540cm3 3 84 960cm3 Weight Pounds 200 90 7 kg 300 136 kg Freeboard is the open space between the top of the sand bed and the tank backwash outlet NOTICE 1 cubic foot 28 320 cm3 of sand weighs approximately 100 lbs 45 4kg DO NOT use a finer grade of sand than recommended RECOMMENDED SAND GRADES Use only 20 Silica Sand Size Range 4...

Page 5: ...fewest possible fittings Keep piping tight and free of leaks pump suction line leaks may cause trapped air in filter tank or loss of prime at pump pump discharge line leaks may show up as dampness or jets of water NOTICE Overtightening can crack filter ports Valves A check valve installed ahead of filter inlet will prevent contaminants from draining back into pool A check valve installed between f...

Page 6: ...inside and check internal assembly Key No 8 Page 10 for broken or loose laterals Key No 8A Page 10 caused by shipping damage Replace if necessary 3 To eliminate stress on laterals Key No 8A fill tank half full of water be fore loading sand 4 When full top of sand bed should be about 12 1 2 31 75 cm below top of distributor about 1 1 2 3 8 cm below tank flange see Figure 2 5 Wash all sand and dirt ...

Page 7: ...lter in service Startup Slide Valve 1 With pump OFF raise handle to fully extended position 2 Open air release valve Key No 1 Page 10 3 Start pump circulating water backwards through filter to waste 4 Close air release valve when a steady stream of water is expelled 5 Run pump five minutes or until waste water is clear this purges excess fine particles from system 6 Stop pump lower handle complete...

Page 8: ...ds through filter to waste 4 Close air release valve when a steady stream of water is expelled 5 Backwash until water runs clear 6 Stop pump lower handle completely to FILTER position and pin in place 7 Filter is now ready for service 8 Open air release valve and release ALL pressure from tank and system 9 Follow Run filter procedure above to restart system MAINTENANCE General Wash outside of filt...

Page 9: ...ut of tank Figure 6 5 Twist lock new laterals into hub on new internal assembly Figure 7 6 Remove old O Rings on tank fittings Key Nos 19 and 20 and install new O Rings provided Be sure sealing area is clean 7 Drop new internal assembly into tank and secure with tank fittings Key Nos 19 and 20 Figure 8 8 To refill reassemble and restart filter follow instructions in owner s manual To avoid severe ...

Page 10: ...10 2859 0597 19 19a 20 13 12 14 15 12 16 8 9 10 11 7 0 5 1 0 1 5 2 0 25 30 3 5 4 0 4 5 5 0 5 5 6 0 3 2 1 4 5 6 17 18 21 22 16 ...

Page 11: ...n Fitting 1 24900 0505 24900 0505 15 1 1 2 NPT Plug 1 27001 0022S 27001 0022S 16 O Ring 2 35505 1425 35505 1425 17 Tank Fitting 1 24900 0500 24900 0500 18 Tank Fitting 1 24900 0501 24900 0501 19 Clamp Assembly 24850 0200 24850 0200 19A Clamp Bolt 24850 0010 24850 0010 20 Tank Lower Half 1 24850 0102S 24851 0103S 21 Cord Ring 1 24850 0008 24850 0009 22 Valve and Gauge Assembly Includes Key Nos 1 5 ...

Page 12: ... too large consult dealer for recom mendation 3 Low Flow Low Pressure A Pump too small consult dealer for recommendations B Plugged pump plugged line or plugged hair and lint trap clean thoroughly 4 Pool Water Not Clear A Water is chemically out of balance consult pool professional B Inadequate turnover rate consult dealer about equipment sizing C Sand in pool means broken lateral To avoid severe ...

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