You already know you should prime before you paint, but did you know you should prime before you pump? Whether you’re installing a new well pump, restarting one after a few winter months, or troubleshooting your plumbing system, priming is an important part of proper well function. By properly priming your well pump, you create a pressure vacuum that pushes water from your well through your plumbing system. As important as this step is, it’s also straightforward and only takes a few minutes—flex your DIY muscles, and learn how to prime a deep well pump with the steps below.
Prepping to Prime a Deep Well
Before you start the priming process, make sure all of your plumbing system’s taps are shut off. Otherwise, the water you add to the pump casing will flow out of the system.
Disconnect the Water Pump
Water and electricity don’t mix well, so start the priming process by turning off the well pump and disconnecting it from power sources. Either unplug the pump from its outlet or turn it off from the breaker circuit to remove the risk of electrocution.
This is also a good time to inspect your pump and its components for any damage, especially if you’re having a water line issue or have left the pump dormant over winter months. Make sure all nuts and bolts are in place, retighten drain plugs, and manually test valves.
Remove the Prime Plug
To get access to the pump system, remove the prime plug. Look for a square or hexagonal-shaped plug located at the top of the pump, and unplug it to expose a hole in the top of the pump.
Open the Release Valves
Photo: Влад Варшавский / Adobe Stock
To avoid pressure building up in your pipes during priming, open your pump’s water pressure release valves. For most water pressure tanks, you can simply use the associated lever to lift the valve up until the attached stem rises, causing water to flow from the pipe and into the bottom of the water tank.
Fill the Pump Casing With Water
With the pump system accessible, the next step is to fill the pump casing with water. It’s important to note that the water you use for this step needs to be at least of the same quality as the water in the well. If you use the well for drinking or potable water, for example, then the water source you use needs to also be of potable quality.
In most cases, a hose that’s connected to a clean water supply works well for priming. Ensure that this hose is lead-free—most hoses include a manufacturer’s label that lists materials and designates them as drinking safe or not. If you don’t have a hose handy, a large and clean bucket or bottle should also get the job done. The actual amount of water you need varies depending on the size of your well pump and the depth of your well, but a few gallons should do.
Whether you have a bucket or a hose, fill the casing with water until it’s full. Watch for the casing to start to overflow from the prime plug hole and the release valves to know when it’s full.
Reconnect the Water Pump
Photo: Ase Linn / Adobe Stock
With the pump casing full, you can replace the prime plug and reconnect the pump to its power source.
Turn the pump on and let it run through a few cycles. You may hear the pump loudly drawing water from the well at first, but it should settle into a regular start-and-stop cycle within a few minutes. Close any release valves once water runs through them.
If the water pump doesn’t resume a normal cycle or your water pressure is inadequate, you may need to repeat this process.
DIY vs. Hiring a Pro
A local well pump contractor will prime your well as part of well pump installation or replacement costs. If your water pressure or flow is later inadequate and a well pump priming is all you need to get it started again, it’s often easy and convenient to do the fix yourself.
If a well pump priming doesn’t resolve your waterline issues, asking a well pump professional or plumber for their diagnosis and fix is the next step. Many contractors offer a free quote for their services, and they come with the reassurance of experience and expertise.
Frequently Asked Questions
Most professionals recommend that a deep well pump shouldn’t run more than 10 hours consecutively before cycling off. Overworking the well pump beyond the recommended amount can prematurely wear out your pump and burn out the motor, which means replacing it more often than you otherwise should need to. Your well pump should also come with the manufacturer’s use and maintenance recommendations that are specific to the model.
The average lifespan of a deep well pump is between 15 and 25 years, after which you’ll have to replace it. Several factors can affect the lifespan of a well pump, such as the quality of the unit. Proper maintenance and repair can also help extend your well pump’s lifespan as well as keep adequate water flow and pressure throughout your home.
Alannah has learned that while many home projects can be accomplished with a little determination, the most important thing is to know when to call in a pro. She’s written numerous articles providing guides, tips, and advice about home improvement, home buying, and real estate investing for sites like MoneyTips and Hero Investing.
Alannah has learned that while many home projects can be accomplished with a little determination, the most important thing is to know when to call in a pro. She’s written numerous articles providing guides, tips, and advice about home improvement, home buying, and real estate investing for sites like MoneyTips and Hero Investing.
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