Hayward HCF Serie Manual De Instalación Y Operación página 8

Changing of the Sand
The procedure for changing the filter sand is as follows:
1. WARNING - Turn pump(s) OFF. Open vent valve. Close necessary valves to isolate filter.
2. Remove manway cover and seal from filter (page 5). Open drain port to drain the water from the filter.
3. Using a shop vacuum or a small bucket remove the sand.
4. Using a hose, spray the sand to loosen if necessary.
5. Clean remaining sand from the walls as best as possible with a hose and vacuum.
6. Add the new sand as required in the table on page 4.
7. Replace the manway cover and seal.
Winterizing
Where freezing can occur, be certain to drain the water from the filter tank prior to freezing conditions.
Head Loss
HCF230C
30
25
20
15
10
5
0
0 20 40
Gallons per min
HCF236C
20
16
12
8
4
0
0 50
Gallons per min
Pipe Size
2" (63mm)
3" (90mm)
7
60 80 100 120
100 150
Acceptable Pipe Size for Maximum Recommended System Flow Rates
Flow Rate in gpm & (lpm)
90 gpm (340 lpm)
200 gpm (757 lpm)
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
HCF234C
25
20
15
10
5
0
0 50
Gallons per min
HCF336C
20
16
12
8
4
0
0 50
Gallons per min
Pipe Size Flow Rate in gpm & (lpm)
4" (100mm) 350 gpm (1325 lpm)
6" (150mm) 800 gpm (3028 lpm)
100 150
100 150