In equipment that works inside a liquid, realizing when something is not working is more complicated. Therefore, having a submersible pump with a humidity sensor is a great advantage.
(Glauco Cisz – Engineer and Regional Sales Manager)
Whenever we talk about equipment, whether industrial or residential, we think about availability, after all we want them to be ready to go into operation when necessary.
If the specification has been made correctly, initially the responsibility for operation is mainly attributed to the manufacturer. Likewise, he is the one who must ensure that the materials and all processes have been correctly respected.
In a second moment, with the equipment in continuous operation, responsibility is gradually attributed to the user. Therefore, he is the one who must respect the required operating conditions and ensure that predictive maintenance is followed to the letter.
Many pieces of equipment signal when something is not working as intended. Whether due to vibration, noise, temperature or other indicators already known to those who operate them, it is usually possible to intervene before a major failure occurs.
In this sense, this also applies to motor pumps.
However, when we deal with submersible motor pumps, monitoring such signs of a problem becomes much more complicated. In fact, in submerged equipment, perhaps the worst failure that can happen is the compromise of the mechanical seal. This would allow liquid to enter the electrical motor's watertight compartment, likely causing a burn. Not there, right?
One thing is certain: equipment operating without any monitoring or predictive maintenance will fail at some point.
Good thing FAMAC has a solution!
With this in mind, FAMAC, in submersible motor pumps, offers another resource in addition to the traditional temperature and overload sensors. This strategy allows you to identify a failure in the primary sealing of the equipment, enabling intervention before a much bigger problem occurs.
FAMAC submersible motor pumps have, between the volute and the engine compartment, an additional compartment, filled with biodegradable insulating oil. A sensor is installed in it, responsible for monitoring the conductivity of this oil. We commonly call this a “humidity sensor”.
This sensor is electrically connected to a device called FEM-C. Installed on the motor pump drive panel, the FEM-C applies a voltage of 5Vdc* between the sensor and the motor pump housing.
When everything is operating as expected, the oil is clean, ensuring insulation between the sensor and the pump housing. Thus, the FEM-C does not detect any current circulation through the oil and understands that everything is OK to operate without risk.
If the primary seal fails, the oil in which the sensor is installed will become contaminated. Consequently, this will generate current circulation through the sensor, the contaminated oil and the pump housing.
As a result, the FEM-C will indicate a failure in the first seal. At this point it is possible to intervene in the operation of the motor pump before the second seal, between the oil chamber and the engine compartment, fails. Therefore, the necessary maintenance, in this case, would be to replace the oil in the intermediate chamber and also the damaged mechanical seal.
Such action will avoid compromising the electric motor, which often makes repairing the equipment economically unfeasible. Therefore, having a submersible motor pump with a humidity sensor is a great advantage. Fortunately!
FAMAC submersibles with humidity sensor
Are you looking for a submersible pump capable of handling different types of fluids, from clean water to raw sewage? So you need to know the line FAMAC FBS-NG.
Designed and built with powers ranging up to 30 hp, the FBS-NG pumps fluids containing solids from 50mm to 90mm, without clogging or damage to the equipment.
All FBS-NG submersible pump motors operate without oil. Have class F or H insulation, thermal protectors and humidity sensor. These features ensure greater safety and durability, preventing overheating, short circuits or leaks.
Click here if you want to access the technical specifications of FBS-NG pumps.
To request a quote, contact us through our website, next to one of our resellers or by phone (47) 3374-6000. We are available to serve you!
(*) volts of direct current
