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08.08.2014
PUMP, SUBMERSIBLE OPERATION - CONTENTS: Explanation of how a submersible water pump or well pump works. This article describes the sequence of operating steps in a submersible well pump water system. Carson Dunlop's sketch at page top shows the components of a submersible well pump water supply system. What happens when you turn on the water at a faucet in a building whose water is supplied by a submersible well pump? The following steps describe normal operating of a building well pump and water supply system.
Turn on building water at a plumbing fixture: open a sink valve, tub valve, or flush a toilet.
Pressure in the water pressure tank and in the building piping system drops down to the well pump cut-in pressure. The well pump pressure control switch senses the pressure drop, closes an internal electrical relay switch to turn on the submersible well pump. A separate pump relay switch turns on the submersible well pump as follows: the well pump pressure control switch senses the pressure drop, closes its internal electrical relay switch to in turn send power to a heavier-duty pump relay switch (usually mounted on a wall near the pressure tank and other water controls). In the submersible well pump photo above you can see extra pump relay switch boxes at the left of the red arrow.
Running a high-amp well pump off of a little pressure control switch will often burn up the switch contacts, or the amperage draw may exceed the rating of the pressure switch itself - that's why the relay switch is used.
Water is forced into the building water pressure tank and simultaneously into the building piping and on to the plumbing fixtures. If the pump cannot send water into the building faster than water is flowing out of the open faucet or plumbing fixture, the well pump will run continuously and water will flow out of the open faucet or plumbing fixture at a rate limited basically by the pump's water delivery flow rate in gallons per minute.
The well pump pressure control switch senses that water pressure has increased to the cut-out point, opening its switch and turning off electrical power to the well pump. When a water pump is inside the well, it can be tricky to know when the pump is actually on or off, though usually we hear the pump relay clicking, and some relays have a light that indicates that the relay is telling the pump to run. The pressure switch calls for pumping by switching a relay in the pump relay, that actually turns the pump on and off. WATER PRESSURE GAUGE ACCURACY - maybe water pressure is fine and it's the gauge that's bad?
See HOT WATER IMPROVEMENT especially if the building cold water pressure is acceptable but hot water pressure and flow are poor. Problems with water treatment equipment can cause loss of water pressure or no water flow: a clogged water filter, or a malfunction in water disinfection or other water treatment equipment can cause a reduction in water pressure or even a complete stop in water flow in a building. Continue reading at PUMP, SUBMERSIBLE or select a topic from the More Reading links or topic ARTICLE INDEX shown below.
Try the search box below or CONTACT US by email if you cannot find the answer you need at InspectApedia. When your well pump is a submersible unit, as it is inisde the well you'll never hear the pump itself. Question: dug well runs dry in summer - can I have a water truck deliver water into my well? To install an emergency water system you could indeed feed your local water pump from water drawn from the 45-g steel drum, though it's not going to last very long. Look a around the water tank and equipment for a sketch left by a prior owner or service tech. Depending on well age you may spot a long shallow depression marking the original well pipe excavation. Finally, last resort, excavate outside making a cross trench near the well pipe exit from the building.
Questions & answers or comments about how submersible well pumps work and the sequence of operating steps - help in diagnosing well pump troubles.
John Cranor is an ASHI member and a home inspector (The House Whisperer) is located in Glen Allen, VA 23060.


Our recommended books about building & mechanical systems design, inspection, problem diagnosis, and repair, and about indoor environment and IAQ testing, diagnosis, and cleanup are at the InspectAPedia Bookstore. Getting the grid prepared for the increased use of renewable energy sources is the goal of the Helmholtz Energy Alliance "Technologies for the Future Power Grid" coordinated by KIT. Another focus of the research activities is the interconnection of the electric power grid with the existing gas distribution network in order to use gas distribution networks as energy storages. The energy turnaround and the therefore increased use of renewable energy sources requires a conversion of the power grid.
Institutes of the Technische Universitat Darmstadt, Technische Universitat Dortmund, and RWTH Aachen complete the skills and capabilities contributed by KIT as partners in the alliance. Next to the development and the comparative evaluation of different technologies, the Helmholtz Energy Alliance also wants to promote urgently needed young scientists and, in particular, intends to increase the percentage of women among the PhD students financed by Helmholtz. The Energy Alliance deals with four key topics: While "system management within the distribution grid" covers the intelligent control of the distribution grid in view of the increasing supply from decentralized and fluctuating energy sources, "system management and stability of a hybrid transmission grid" investigates the structure and operation of a HVDC supergrid superimposed to the existing HVAC network.
The topic "integration of storage systems into the future power grid" focuses on the interconnection of the electric power grid and the gas distribution network using the latter for storing that amount of electrical power, generated e.g.
Hurricane Katrina helped University of Texas professor, Alexis Kwasinski, formulate a new plan for the U.S.
Mitsubishi Electric launched Monday a "smart grid" pilot project that aims to boost the stability of electricity supplied from weather-dependent sources such as solar and wind power. After years of neglect, scientists and policy makers are focusing more attention on developing technologies needed to make the so-called "green grid" possible, according to an article in ACS' Chemical Reviews. Siemens and the utility company Allgauer Uberlandwerk (AUW) in the city of Kempten, Germany, are testing the smart grids of the future.
Could existing electric vehicles (EVs), despite their limited driving range, bring about a meaningful reduction in the greenhouse-gas emissions that are causing global climate change?
The British government gave the green light Tuesday for what it called the world's biggest offshore wind farm to be built off the English coast.
A blimp-shaped, helium-filled airship considered the world's largest aircraft flew for the first time Wednesday with a short but historic jaunt over an airfield in central England.
In a few weeks, Uber will start using self-driving cars to carry passengers in Pittsburgh, raising the stakes in the fast-track race to deploy autonomous vehicles. The CIG-UN Ciglow Flameless Lighter can be wall mounted into smoking shelters or on to a solid or stud wall. By removing combustibles from the workplace the unit improves safety and has been designed to be easily maintained through its pull out plug in element system. The unit is especially useful in the Oil and Gas industry as it enables companies to ban lighters and matches from site. We can also provide a portable version of this unit if wall mounting is not possible or if you wish for greater flexibility over where the unit is used.
The units are available with Manual or Timed options which are explained in detail in the Data Sheet documents below. If you would like any additional information on our products you can contact our online information team, via the Click and Chat logo opposite, or call us on 0151 709 8800. Consumer advice on saving money on water supply repair costs includes a review of the parts and labor costs of a typical well pump and pressure tank replacement case. If we didn't use a pressure tank, because water is not very compressible, the second water was turned on, water pressure in the system would drop below the pump cut-on pressure, the pump would turn on, and probably bring water pressure up to the cut-off pressure quickly, causing short cycling and burning up pump controls or a pump motor. The arrow itself points to a submersible well pump that has been removed from the well and left in the utility space that houses a water pressure tank and control that are partly visible in the right side of the photo. In this case, the well pump will continue to run until the building faucets or plumbing fixtures are turned off. The well pump has re-pressurized the building water tank and piping up to the cut-out or cut-off water pressure.
If you set the cut-out pressure too high the pump may never reach it and will run continuously, or you may find frequent plumbing leaks, or even an unsafe condition, risking bursting a pipe or water pressure tank. However because the submersible pump is inside the well at the bottom of the well piping, loss of prime is not a problem directly - that is, the submersible pump, because it is under water, will have no trouble re-starting.


So a secondary potential problem would be in the relay itself, but we would look at the pump pressure control switch first. Examples of water tank problems include poor water pressure or the well pump rapidly turning on and off (short cycling). Do you run out of water or after running water for some interval water pressure and flow are poor? Accumulated debris in a water heater, and debris from a corroded or disintegrating hot water tank dip tube or hot water tank sacrificial anode can also block the hot water outlet opening, resulting in low hot water pressure in a building. But you may hear one or even two well pump relay switches that click when the pump is started or stopped.
Due to an unusually dry summer I have had my well run dry several times (four teenage daughters!) the pump recently burnt out and I had to replace it and the pressure switch (30-50). I'd give some thought to a larger water storage tank installed in the building or outside above or on top of the building if the structure permits; when you have water in your well, even if it's at a very slow recovery rate, you can use it to slowly fill the larger storage tank that will act as a buffer to give functional water when you need it, recovering slowly when water is not being used. Note pipe direction, move out 10 or 15 feet and repeat - this may be less total digging than just digging up the whole pipe to follow its length to the well.
Cramer is a past president of ASHI, the American Society of Home Inspectors and is a Florida home inspector and home inspection educator. Helmholtz researchers are developing solutions for a flexible and reliable grid which manages the fluctuating power supply from renewable energy sources in cooperation with university partners and utilities.
The Helmholtz Association will subsidise the Energy Alliance with 3.2 million Euros from its Initiative and Networking Fund in 2013 and 2014.
Due to the increased electric power generated by wind and photovoltaic power plants and the emerging electric mobility, it is foreseeable that today's power grid will not be able to meet future requirements.
Forschungszentrum Julich and the utilities EnBW Energie Baden-Wurttemberg AG, MAINOVA AG, and Stadtwerke Karlsruhe Netze GmbH act as associated partners.
New technologies will be required to implement and manage the so far not existing HVDC grids.
The unit has been designed for environments where naked flames create a risk to the health and safety of others on site. Many submersible well pumps are capable of pumping to high enough pressure to damage the plumbing system or burst a water tank. But still a bad check valve or foot valve means you may lose building pressure between well pump cycles. If your well pump is a small horsepower unit the pressure control switch on or close to your water pressure tank turns the pump on and off in response to water pressure - and the relay may emit a click at the start and stop of the run cycle. Last, but not least, the Energy Alliance deals with "comparative technology evaluation" based on different criteria such as economic efficiency and contribution to the energy turnaround. If your pump is a higher horsepower unit your pressure control switch in turn operates a separate, heavy duty well pump relay switch usually mounted nearby, and that switch is what actually turns the pump on or off. That way I could still at least have water in the system to allow flushing toilets or running limited amounts of laundry or dishwashing while the well replenishes itself.
A further aspect is the development of innovative methods and technologies which ensure grid stability. Thanks to Alan Carson and Bob Dunlop, for permission for InspectAPedia to use text excerpts from The Home Reference Book & illustrations from The Illustrated Home.
As, due to the decrease of conventional power plants, the number of rotating masses of turbines and synchronous generators - which today provide the so-called instantaneous reserve that balances the difference between generated and consumed power - also decreases. The text is intended as a reference guide to help building owners operate and maintain their home effectively.
Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order.
Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order.



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