FAQ Pumps Title
No water is pumped when my pump is turned on. What’s wrong?
Your pump is part of a larger system for moving liquid that includes a liquid supply, a suction line, a pump and driver system, and a discharge line. There may be a problem at any part of this system that interferes with liquid flow. The most likely culprits are an improperly primed pump or blockage in the casing or pipes. Pump-troubleshooting experts in Lethbridge should perform a full diagnostic so you won’t have worse problems in the future.
What is the difference between P1 and P2 when talking about pumps?
This is a great question, and an important one.
Historically pumps were installed with an separate motor. The power that the PUMP required to do its job was the shaft power, the pump input power. This is P2.
The shaft is of course driven by a motor, such as an electric motor. This motor will consume power. As no machine is 100% efficient, the power drawn by the motor will be greater than the output power. The power drawn by the motor is known as P1. P1 is always larger than P2.
In some applications the term P3 is used. P3 is generally known as the output power of the pump or hydraulic power of the pump.
When checking the suitability of a power supply for a pump drive not only should the P1 rating be looked at but also the current rating of the pump and the power supply, especially the inrush current if not using either soft stater or smart pump controller.
Why do I need a safety wire on my bore pump?
When you install a bore pump it is best practice to install a stainless steel safety wire that runs from the bore cap or top of the well to the top of the pump.
The pump is normally supported by the well riser (the plumbing running between the pump and the bore cap) and the safety wire is for emergency use in case the well riser fails. The safety wire does not normally support the pump but should be capable of supporting the pump so that the pump can be hauled up in a failure. The safety wire should be made of stainless steel as should the fittings.
Do I need a water pressure tank on my pump?
Water pressure tanks are often added to pump installations to take the “shock” out of the system.
If your pump is running water to a tank, even a distant one, you probably do not require a pressure tank IF you have a soft start system on the pump. If your pumping system employs a standalone inverter such as JNTech we do not recommend using a pressure tank.
If your pump is connected directly to your plumbing system, such as is often the case with domestic pressure pumps, or has fast acting valves that may result in water hammer then you should install a pressure tank.
I hear a crackling sound when my pump is working and the pressure of the liquid varies rapidly. What’s wrong?
If your machine has these symptoms, it probably means cavitation, or when air bubbles form near the eye of the impeller. If left unattended, this problem can cause serious damage to your pump. Consult a professional to identify how you should fix this problem.
My pump turns itself unexpectantly off by itself. Is something wrong?
There could be a few things wrong but a likely cause is that your well has run out of water or an electrical fault with the installation.
Most pumps will shutdown if they get too hot. If there is no water the pump will heat up and likely stop. Unfortunately the damage may already have been done if this happens.
Pumps fitted with either smart controllers or intelligent pumping inverters detect “low water” by monitoring the power used by the pump which fluctuates rapidly when the pump starts starts to draw in air. After a short while of erratic load on the pump the controller should shutdown and wait a prescribed time for the bore to recharge before restarting.
Not all pumps, pump controllers or pumping inverters are the same. It is best to check the operator manuals of your particular installation or seek profession advice.
If there is a wiring fault it is best diagnosed and fixed by an electrician.
What is the advange of using Flexibore well riser?
Flexibore lay-flat well riser hose has many advantages over traditional used ridged or HDPE well riser.
Flexibore is tough and is exceptionally strong with superior strength fittings. This serves a couple of purposes.
When a pump starts there is firstly an immediate torque reaction as the motor spins up and water starts to move. This starting torque reaction is reduced by using soft starters or pumping inverters but Flexibore being flexible stops this torque reaction being transmitted to the well head.
Flexibore removes the need for a safety wire to be installed. Flexibore will not fail like HDPE pipe and fittings.
And a realy great advantage of Flexibore is that the well riser can be allowed to drain so that if you have to lift the pump back to the surface you do not have to lift the weight of the water column as well. The Flexibore simply drains and collapses flat enabling for easier handling and lifting.
FAQ Solar
Can I add battery storage t my grid-connected system?
Yes.
What is performance warranty?
Performance warranty is a term often used by the solar industry these days, especially when talking about solar panels.
Over time the output of solar panels decreases, generally about 20% over 25 years. Panel manufactures give a “performance warranty” that the decrease in output over the life of panel will not be greater than what they state in their warranty. The warranty varies slightly from manufacture to manufacture but is typically no more than 20% output degradation over 25 year life.
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