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Operating A Hayward EC-40 Earth Filter

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Starting the filter

After plugging in filter, add 1/2 bag (4.5 ounces) of Filter Aid or 4lbs of Diatomaceous Earth (D.E.). The filter powder should be poured slowly into the skimmer while filter is running.

How long should filter run each day?

Your EC-40 will filter 2,400 gallons per hour. It is recommended that you turn over the water in your pool at least twice a day (refer to chart at bottom of page for your pools capacity). To keep your pool sparkling clean, run filter more in hot weather, rain or with heavy use.

What is regeneration (bumping)?

When return pressure (water flow) becomes weak or there is a surge in the pressure gauge reading, it is time to regenerate the filter powder. To do this unplug filter, then move handle at top of filter down slowly then up quickly. Repeat 3 times. Plug in filter and filtration will resume at or near original pressure. When bumping handle no longer extends filter cycle it may be time to backwash the filter.

What is backwashing?

Backwashing completely clears filter of dirt, debris and filter powder by reversing the flow of water through the filter. To backwash, shut off filter and move bump handle at top of filter down slowly then up briskly. Repeat 8 times. Open drain (backwash valve) that is located at bottom of filter tank. Allow water to run until clear, close drain and follow instructions for starting filter.

Pool Volume in Gallons

Round Pools Capacity (Gallons) Oval Pools Capacity (Gallons)
10 Round 2,000 8x12,8x14 3,000
12 Round 3,000 8x19 3,500
15 Round 5,000 10x15, 10x16 3,500
18 Round 7,500 10x21, 12x18 5,000
21 Round 10,000 12x24, 14x20 7,500
24 Round 14,000 14x25, 15x24 10,000
27 Round 18,000 15x30, 16x26 12,000
30 Round 21,000 16x32 15,000
18x33 19,000

Note: Pool volumes above are approximate. For exact calculations please use the calculator below.

Please click here to use our easy to use Pool Calculator if you don't see your pool size listed above.

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