Motor Pumps Frequently Asked Questions
Motor pumps may be stalled due to below common reasons:
- Lose of prime: Pump casing must be filled with liquid before the pump is started, or the pump will not be able to function. If the pump casing becomes filled with vapours or gases, the pump impeller becomes gas-bound and incapable of pumping.
- Dry run: The water pump shaft and impeller are spinning at extremely fast rates with no water to transfer their rotational energy, that energy is released as heat instead. If the pump is run dry, it’s moving parts will become extremely hot, causing severe damage to the pump over time and greatly limiting its service life. Dry run protection relay, switch, sensor can be used to avoid dry running of motor pump.
- Overloading: Centrifugal pumps are said to be overloaded when the driving motor draws excess current resulting in excess than normal power consumption. Thermal overload protection relays can be used to avoid overloads.
Taro pumps offers a variety of product range suitable to the various field conditions. Motor pumps can be selected based on the available water sources as below:
|Water Source||Water Pump|
|Sump, Open well||Monoblock, Open well submersibles|
|Tube well||Jet pumps, Borewell submersibles|
Based on water requirement and the outlet distance from water source, appropriate product can be selected suitable to the various field conditions. Please refer production selection link to select a product or contact our nearest dealer for support. Click here find your nearest dealer.
A Electric motors pass alternating current through opposing pairs of magnets to create a rotating magnetic field, which "induces" a magnetic field in the motor's rotor, causing it to spin around. The electric motor powers the impeller which drives the liquid to flow into the suction port (inlet) of the casing and is thrown to the outside of the casing and then exits the discharge port. The velocity imparted to the liquid by the impeller is converted to pressure energy or "head".
Motor-Pump alignment is the process of aligning shaft centrelines between a motor and a pump. The motor is the prime mover, transferring power to the pump by the use of a coupling.
In this type of alignment, the motor is almost always the moveable machine, and the pump is the stationary machine. Proper shaft alignment is achieved by moving the motor. The motor is shimmed vertically to achieve the proper elevation to align it to the pump, both parallel (offset) and angular. The motor is then moved horizontally to achieve proper horizontal placement for aligning the shaft centrelines, both parallel and angular. The motor is moved horizontally by the use of jacking bolts, or by the use of pry bars, hammers, or other tools.