If your home is on the outskirts of Daytona, you might get your water from a private well system. The real workhorse in that setup is the pressure switch. It’s basically the boss of your water supply, constantly measuring the pressure to make sure your pump turns on and off at just the right time. When the pressure switch starts to fail, you’ll usually notice a drop in pressure or a pump that won’t turn at all, which is your cue to book an inspection.
How Does a Well Pump Pressure Switch Work?
The switch operates by sensing the amount of water pressure in the plumbing. It does this to tell the pump when to switch on and when to turn off. In the majority of homes, it’s a 40/60 PSI or 30/50 PSI switch.
If your switch is doing its job, you’ll have reliable water pressure at every faucet. It keeps the pump from turning on and off way too fast, which reduces the risk of expensive repair bills. It’s also crucial for your water filtration setup. Filtration systems rely on steady pressure to clean your water, so when the switch is dialed in, your filters actually run the way they were designed to.
Just to be clear, the well pump pressure control switch is not something that you have to turn on and off yourself. It works automatically around the clock to monitor the water pressure. When it gets too high, it tells the pump to shut off. When it gets too low, it signals the pump to turn back on and restore the pressure.
How Long Do Most Well Pump Pressure Switches Last?
Most pressure switches on well pumps have an average lifespan of roughly five to seven years. The lifespan of yours greatly depends on how often the pump cycles, the water quality in the well, and how often you schedule professional maintenance.
The Contacts Have Burned Out
Every time the pump cycles on, there’s an electrical arc that forms. Over time, this arc can weld the contacts on the switch together. It can also burn them to the point that they no longer conduct electricity.
The Pressure Port Is Clogged
In Florida, a clogged pressure port is one of the top culprits for pressure control switch problems. This port is in place to connect the switch to the water system. It usually looks like a small pipe or nipple, and as time goes by, it can become blocked by iron, calcium, and sand particles.
This essentially makes the switch unable to monitor what the pressure is in the system. And because of this, it becomes unable to tell the pump when to turn on and off. This component is typically one of the first things a plumber will check when a switch quits working.
The Electrical Contacts Have Corroded
Living here in Daytona is great, but the salt air and humidity are brutal on anything electrical. And they’re especially hard on well pumps, which are already working overtime. If you aren’t staying on top of regular maintenance, the humidity will find its way into the pressure switch housing. Once moisture gets in there, the internal metal contacts start to rust and pit. If you let it go too long, that corrosion eats away at the connections until the switch stops working.
The Diaphragm Has Damage From Wear and Tear
There’s a rubber diaphragm in the pressure switch that is there to sense water pressure. But this component can become brittle as the system gets older. It can even tear or crack. Harsh minerals in the water often speed up the deterioration process. And when the diaphragm can no longer sense pressure changes, the switch won’t operate correctly.
The Pressure Tank Becomes Faulty
Sometimes, the problem has nothing to do with the pressure control switch at first, but rather a waterlogged pressure tank. This type of issue will frequently mimic the same symptoms of a bad pressure switch. For example, when the tank loses its air charge, the well pump may turn on and off really fast. If you don’t get the issue fixed quickly, the pump will continue to short-cycle and the contacts in the switch will wear out at lightning speed.
The System Has Loose or Damaged Wiring
It stays incredibly hot in Daytona for much of the year. This extreme heat can make the internal components of a pressure control switch expand and contract, especially during rapid temperature swings. And as the components keep flexing, the wiring connections can become loose at the switch terminals.
This problem is not only frustrating but also a potential safety hazard. Loose wires create heat, sometimes melting the insulation around the conductors and eventually causing the switch to fail intermittently.
There’s an Insect Infestation
When insects crawl into the electrical housing of a pressure switch, they love to nest, leave debris, and build colonies. If the buildup becomes severe, it can create a bridge between the contacts in the switch. When this happens, or the components become blocked, it may trigger a short, and the switch won’t be able to operate properly.
The Setup Doesn’t Have the Correct Voltage/Amperage
Anytime a pressure control switch gets replaced, it must be perfectly matched to the pump’s specific voltage (usually 120V or 240V power) or horsepower. If it doesn’t have the correct electrical rating, it won’t function correctly because it won’t be able to handle the heavy electrical load.
The Housing Is Leaking
Even if it’s a tiny pinhole leak in the switch housing, this can allow water to drip onto the electrical terminals. And as time goes by, they will corrode and eventually stop working.
Is your pressure switch not working on your well pump? Contact Benjamin Franklin Plumbing to speak with a skilled plumber. If there’s any delay, it’s YOU we pay!
