4
GENERAL INFORMATION
• Clean a new pool as well as possible before filling pool and operating filter.
Excess dirt and large particles of foreign matter in the system can cause seri-
ous damage to the filter and pump.
Do not operate filter at water temperatures above 120°F (65.5°C).
NEVER operate this filter system at more than 50 pounds per square
inch (50 PSI/345kPa) pressure!
TABLE I - OUTLINE DIMENSIONS IN INCHES (mm)
Sand A B C D E F
Model No. of Clamps
S7S50 28-1/2(724) 42(1067) 7 36(914) 53-1/2(1360) 2” NPT
S8S70 32-1/2(825) 42-1/4(1073) 8 40(1020) 54-1/4(1380) 2” NPT
TABLE ll - FILTER SPECIFICATIONS AND OPERATING INFORMATION
FILTER MODEL: S7S50 S8S70
Filter Area 2.4 Ft.
2
(.223M
2
) 3.4 Ft.
2
(.316M
2
)
Flow Rate Range 33-48 GPM(125-182 L/m) 47-68 GPM(178-257 L/m)
Public Pool Flow Rate 48 GPM(182 L/m) 68 GPM(257 L/m)
Max. Operating Pressure 50 PSI(345 kPa) 50 PSI(345 kPa)
Freeboard (See Fig. 1B)* 11” (28 cm) 11” (28 cm)
Turnover in Hours:
6 Hours 17,200 Gal.(65 102 liters) 24,400 Gal.(92 354 liters)
8 Hours 23,000 Gal.(87 055 liters) 32,600 Gal.(123 391 liters)
10 Hours 28,800 Gal.(109 008 liters) 40,800 Gal.(154 428 liters)
Qty. of Media Required:
Cu. Ft. 2(56 540cm
3
) 3(84 960cm
3
)
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 cm
3
) 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 .40-.55mm., Uniformity Coefficient less
than 1.75.
NOTICE: Use of other sands will reduce filter performance, may damage
pump,and will void warranty.
Recommended:
1. Wedron Silica/Best Sand Co., Sand Grade: Wedron .45-.55mm., Effective
Size .46mm, Uniformity Coefficient 1.22.
2. U.S. Silica - Silurian Filter Sand, Sand Grade.45-.55 mm., Effective Size
.48mm, Uniformity Coefficient 1.18.
Hazardous pressure.
Can cause severe
injury or major
property damage
from tank blow up.
Release all pressure
and read instructions
before working on filter.
31.75 cm
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