Pool Pumps

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Pool Pump Selection Tips :

As the heart of any pool filtration system, the pump sucks in water from the basin, circulating it through the filter and disinfection equipment before passing it into the pool again. A cast iron or Bakelite strainer must be placed before any pool pump to remove leaves, strings of hair, or debris from the water circulation to prevent the malfunction or damages to the pump.

The pool pump (often of the centrifugal type with a direct-coupled electric motor) is used to circulate water in the water treatment facilities.

The most notable properties of a pool pump include the noise-free, smooth operation and the pump casing material (resistance against corrosion by chl...

Pool Pump Selection Tips :

The pool pump (often of the centrifugal type with a direct-coupled electric motor) is used to circulate water in the water treatment facilities.

The most notable properties of a pool pump include the noise-free, smooth operation and the pump casing material (resistance against corrosion by chlorine or other corrosives in the water).
The material used to make the impeller of the pool pump must be resistant to corrosion and cavitation (steel or ABS). As illustrated by the image below, pumps are typically made with an integrated, sealed strainer.

Several factors must be taken into account to select the right pool pump, including the distance between the pool equipment and the basin (piping distance), the pressure drop caused by the equipment (such as the strainer, screen, heat exchanger or heater, filter, and the fittings), the basin volume (to estimate the discharge), and the suitable treatment method for the application (indoor or outdoor).

Connecting the pool pump intake

Drain Connection: The main drain is situated at the deepest part of the pool with the floor tilted toward it. Most of the grime settling on the floor of the pool is drained from this place and sucked into the pump.
Skimmer or Overflow Connection: Skimmers and overflows are responsible for collecting water from the surface which contains a considerable portion of the floating pollutants including, grease, leaves, and debris that do not settle.

Calculating the Pool Water Pump Power

P = Power of the pump (hp)
Q = Pump discharge (gpm)
H = Pump discharge head (ft)
ɣ = Specific weight of water (1)
Eeff = Pool pump efficiency, which is assumed between 0.5 and 0.7.

Head (pressure) and Discharge (volume) of the Pool Pump :

Overall, the pressure drop and the volume of the passing water are important to calculate the head and discharge of the pump.
Notice: The pool pump is selected after deciding the type of the filter and evaluating the pressure drop across the filter and other factors.

Important factors affecting the head (pressure) of the pump :

The pressure drop across the filter depends on the type of the filter (diatomaceous, cartridge, sand) and the filter material (FRP, metal).
The pressure drop along the pipes, valves, and fittings.

Important factors affecting the discharge (volume) of the pool pump :

The pool pump discharge is based on the required amount of water circulating in the pool filtration system, which is naturally equal to the capacity of the filter.

Pool Pump Installation Tips

As a general rule of thumb, the pump must be installed on a rigid, leveled, and stable platform, at least 6 inches (15 cm) above the floor to prevent damage to the electric motor during the sand filter backwash or by water splashes.
The pool pump must be installed in a way that allows access for maintenance.
Furthermore, gate valves must be used at the points of intake and discharge of the pump so that the pump can be isolated from the circulation circuit during maintenance.
Furthermore, the pool pump shall not be installed near the base of the filter since opening it for maintenance exposes the electric motor to water spillage and damage.
Note the space between the filter and pump when installing the pump, and do not use bends and right-angle elbows if possible.
If the pump is installed in a place where its noise must be muffled, the best approach is to incorporate cork or industrial rubber dampers all across the foundation.
Pool pumps must be installed as near to the basin or the hot tub as possible and below the water surface level.
Furthermore, a back-up pump must be planned in public pools.The back-up pump allows for uninterrupted water circulation during the maintenance of the other pump. Moreover, the pool can be drained in a shorter time using both pumps.
Strainers must be placed at the intakes of all pool or spa pumps to catch hair, cloth, or any suspended debris before entering the pump. This prevents strings of hair or pieces of cloth to clog the impeller.
The strainer is composed of a removable basket screen that passes water from the inside.

Notice: The screen must be corrosion-resistant with meshes no larger than 1/8 of an inch. Furthermore, the total surface area of the meshes must be 10 times the cross-sectional area of the strainer inlet. Such a surface area reduces pressure drop while extending the service time between periodic clean-ups.

Placing an Order and Warranties for Pool Pumps

Offering best price guarantee for all products, the prices for pool pumps presented by DamaTajhiz are up-to-date and discount-included (see Best Price Guarantee at DamaTajhiz.com).
At DamaTajhiz.com, we provide all the information you need, as well as guaranteed unbeatable prices, for several models of pool pumps from reliable manufacturers, with original warranties, to bring you the thrill of an ideal, intelligent purchase.

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