As the name suggests, Submersible Pumps can be completely submerged in water. They are extensively used to pump water from Boreholes to the surface.
There are several benefits of submersible pumps. They are known for their efficiency and need not be primed as it is already submerged in water. The water in the Boreholes around the motor of a submersible pump cools it down, preventing it from overheating during operation.
Submersible pumps are very quiet as the water surrounding them absorbs the noise produced during operation.
Warranty: Check to see if the company you are working with offers any type of warranty on the pump or motor. The motor is typically covered for 5 years.
Some Technical Details to Consider:
- Maximum discharge head: The maximum discharge head of a pump is the difference between its (rated) maximum head and the final discharge point. A Deep Borehole will need a pump with a high maximum discharge head.
- Discharge rate: The discharge rate of a pump can be defined as the amount of water it can move per minute or hour. If you intend to use your pump to pump water out of a rain barrel, a power level of 250-500 gallons per hour should be enough to empty your container within an acceptable period. If, however, you want to pump water out of your basement, you’ll need a pump with a higher discharge rate (typically >or = 2,000 gallons per hour).
- Suction depth: When a pump sucks water out of a Borehole, its water level drops. At one point, the suction assembly will no longer be submerged in water. It causes air to get into the pump and hinders it from functioning correctly. The suction depth of a pump can be defined as the water level at which it is capable of operating.
Some Factors to Consider When Choosing a Submersible Pump:
- Continuous Duty vs. Intermittent Duty: One of the most important factors to consider when choosing a pump is whether you plan to use it continuously or intermittently. Pumps designed for continuous operation come equipped with motors developed to run non-stop without getting damaged. On the other hand, intermittent duty-rated motors can run for a short period, after which the motor should be allowed to cool down. Continuous-duty-rated pumps are used in industrial processes that work more than 20 minutes per cycle.
- The Insulation Class of the Motor Windings: Heat can affect different components of a submersible pump. If your pump will operate in a high-temperature environment, check the insulation class of motor windings to make sure they are rated to operate in high temperatures.
- Pump Motor Protection Devices: Look for a pump with protection devices such as a thermal motor protector and a high-quality mechanical seal designed to protect against mechanical and electrical failures. When the internal temperature rises, the thermal motor protector shuts down the supply voltage to the pump. A mechanical seal prevents water from entering the motor through its wet end.
Warranty: Check to see if the company you are working with offers any type of warranty on the pump or motor. The motor is typically covered for 5 years.
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| How To Choose A Submersible Pump For Your Borehole In Zimbabwe? |
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