Hayward HCF Serie Manual De Instalación Y Operación página 7

Installation of the Sand and Gravel
After testing has been finished and the system is 100% operational, add the filtration sand and gravel required. Use 1/2" x 1/4" gravel media and #20 silica
sand (.45 - .55 mm). Open the vent valve, remove the manway cover and seal from the filter (page 5). Ensure the filter is full of water up to the inlet port. The
proper amount of sand and gravel is listed in the table on page 4. If a diffuser head is directly underneath the manway opening, cover it with plastic and tape
to prevent media from entering the plumbing.
Notice - Remove any plastic and tape from the diffuser after the sand is poured in the filter and before starting the system.
Now, replace the manway cover and seal into the filter tank. Be sure that the manway cover is free of debris. If the manway cover is not free of sand, the
seal will not seat properly and could cause the filter to leak at the manway cover. Use the vent valve to remove air from the filter. Put the filter valves into the
backwash mode, turn the pump ON, and run for about 3 to 5 minutes.
Filtration
Note: Valves and piping systems are not included with the filter.
With the pump turned OFF, arrange the valve(s) for filtration as shown. Start pump, open air relief vent valve until solid stream of water is coming out. Close
the vent valve and read the pressure gauge. This is the normal start up pressure when the filter sand is clean. Make a note of the start up pressure. When the
pressure gauge shows a pressure rise of 8 to 12 psi above the start up pressure, it is time to backwash the filter
Backwash
CAUTION – Check the water level in the skimmer opening before and after backwashing. Replace water after backwashing to at least 2 inches above the bot-
tom of the skimmer opening. NOTE - It is very important to turn off the filter pump(s) prior to changing valve(s) position.
To backwash the filter, stop the pump, set the valve(s) into the "Backwash" position (shown on page 7) and restart the pump. The backwash cycle should be
run for 3 to 5 minutes. Once backwash is complete, turn pump off and set valve(s) to the "Filter" position and start pump.
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.
Operation
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
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