AQUATECH CAN165BM-100 매뉴얼 - 페이지 7

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CHECK YOUR WATER PRESSURE AND PUMPING RATE

Two water system conditions must be checked carefully to avoid unsatisfactory operation or equipment damage:

1. Minimum water pressure required at the filter tank inlet is 25 psi. If pressure is over 50 psi, a pressure reducing valve must

be installed in the water supply line ahead of the hydro-charger (Fig. 1, 2 or 3).

2. The pumping rate of your well pump must be at least 5 gallons per minute (gpm) for satisfactory operation of the

aircharger. In addition, the pumping rate must equal the required backwash flow rate of your model (see below for

backwash flow rates). To measure the pumping rate of your pump, follow these instructions:

a. Make certain no water is being drawn. Open spigot nearest pressure tank. When pump starts, close spigot and

measure time (in seconds) to refill pressure tank (when pump shuts off). This figure represents cycle time.

b. With the pressure tank full, draw water into a container of known volume, and measure the number of gallons drawn

until the pump starts again. This is draw-down. Divide this figure by cycle time and multiply the result by 60 to arrive

at the pumping rate in gallons per minute (gpm). To aid in your calculation, insert the date in the following formula:

DRAW-DOWN ______ ÷ CYCLE TIME _______ x 60 = PUMPING RATE ________ (gals) (secs.) (gpm)

EXAMPLE: CYCLE TIME is 53 seconds; DRAW-DOWN is 6 gals.; then, PUMPING RATE equals:

NOTE:

Backwash Flow Rates

The most important criteria in sizing a filter is the capacity of the pump. The water must pass through the filter media at a service

flow rate that allows it to operate properly. The filter must also be backwashed at a flow rate sufficient to dislodge and remove

captured particulates. Failure to provide sufficient water will cause a build-up of particulates in the filter media, impairing its

filtration ability. In order for your filter to backwash and rinse properly, your pump must be capable of providing the backwash

flow rates indicated in the above specification chart.

Backwash Frequency

Add one person if you have a dishwasher.

NOTE:

How to calculate gallons of water between regenerations

EXAMPLE: 6,000

How to calculate number of days between regenerations

6 gals. ÷ 53 seconds x 60 = 6.8 gpm

See chart on page two for minimum flow rates.

If your pumping rate is inadequate, do not install your filter until problem is corrected.

ppm of capacity between regenerations

÷ ppm of iron in the water sample

= number of gallons supplied between regenerations

- reserve capacity (number of people x 75 gallons)

ppm between regenerations

÷ 4

ppm of iron - 4 is the minimum setting of compensated iron [To be entered by the user]

= 1,500

gallons between regenerations

– 375

gallons reserve capacity (5 people x 75 gallons)

= 1,125

GALLONS - BETWEEN REGENERATIONS