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How to Prime a Well Pump: A Step-By-Step Guide - Call Now

What Is Priming?

Priming a well pump involves filling the pump with water to create the necessary pressure to draw water from the well. This process eliminates trapped air, allowing the pump to function properly. Jet well pumps usually require manual priming. Submersible pumps, which sit inside the well below the waterline, are self-priming and generally do not need this type of maintenance.

Step-by-Step: Priming Your Well Pump

Before you begin, gather the following:

• 5 to 10 gallons of clean water
• A screwdriver or wrench that fits your pump model
• Hose or bucket
• Teflon tape to reseal the fittings
• A flashlight
• Protective gloves
• Towels for potential spills

Step 1: Turn Off the Pump’s Power

Safety should always be your first concern. Go to your electrical panel and turn off the circuit breaker that powers the pump. This keeps it from powering on while you’re working on it, ensuring your safety throughout the process.

Step 2: Locate the Priming Plug

Find the priming plug or fill cap, usually positioned on the top of the pump housing. This is where you add water to re-prime the system. Use the proper tool to remove the plug.

Step 3: Add Water

Carefully pour water into the priming port using a hose or clean bucket. Keep adding water until the pump housing is full and water slightly overflows from the opening. This helps remove all the air pockets inside the pump. Always use clean water to prevent debris from clogging valves or damaging internal parts.

Step 4: Replace the Priming Plug

Once the pump is full, replace the priming plug and tighten it securely. If you removed any fittings or caps, double-check that they’re sealed properly to prevent leaks.

Step 5: Restore Power and Test the Pump

Turn the breaker back on so the pump can operate. It may take a minute or two to reestablish suction. Watch the pressure gauge to ensure it’s climbing steadily. You should also hear water moving through the pipes.

Step 6: Check the Water Flow

Turn on a faucet inside your home. Run the water for a few minutes to ensure proper flow. This also helps remove any remaining air in the lines.

Common Mistakes to Avoid

Even a simple priming job can go sideways if you’re not careful.

Here are common mistakes to avoid:

• Not turning off the power: Always disconnect electricity before working to prevent shocks or accidental starts.
• Using dirty water: Contaminants can damage pump components or clog valves.
• Leaving air pockets: If you don’t fully fill the pump, it may struggle to build pressure.
• Overtightening fittings: This can crack plastic components or damage threads.

If you still hear air sputtering from faucets after priming, you may need to repeat the process or check for leaks in the suction line.