How to Replace a Square D PumpTrol
The Square D PumpTrol is a pressure switch manufactured by Schneider Electric. It monitors the pressure in a pump-driven plumbing system and tells the pump when to turn on and off. When adjusted properly, it extends the life of the pump by reducing its on/off cycles. It also assures that water is delivered at a reliable pressure to the faucets and showers. You may need to replace your PumpTrol if it becomes damaged or obstructed. Does this Spark an idea?
Things You'll Need
- Non-contact voltage detector
- Wrench
- Screwdriver
- Painter's tape
- Plumber's tape
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Instructions
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Turn off the power to the PumpTrol and water pump at the electrical distribution panel. Confirm the power is off by touching a non-contact voltage detector to the wire's insulation. Turn off the water at a valve that is upstream of the PumpTrol. Open a faucet to remove the pressure in the plumbing.
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Remove the bolt that secures the cover with a wrench. Pull the cover off and set aside.
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3
Unscrew each wire from its terminal and pull them out. As you remove each wire, write its terminal name on a piece of painter's tape and stick the tape to the wire. This helps when reinstalling the new PumpTrol.
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4
Loosen the wire compression mechanism with a screwdriver and pull the wires out the side of the PumpTrol. Be careful not to remove the tape from the wires.
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Unscrew the device from the pipe by turning the whole unit counterclockwise. Set the old unit aside. Shine a flashlight down the pipe to assure there are no blockages. If there are, they need to be removed before installing the new PumpTrol.
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Clean the plumber's tape from the pipe threads and wrap new plumber's tape clockwise around the pipe. Three or four full wraps around the pipe threads assures a leak-free connection.
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Twist the new PumpTrol on the pipe turning it clockwise. Turn the device until it is very tight without damaging the PumpTrol or the pipe.
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Insert the wires through the access hole in the side of the PumpTrol and secure by tightening the compression mechanism.
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Insert the wires into the terminals as marked on the painter's tape. Tighten the terminals down to secure the wires.
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Adjust the PumpTrol's cut-out pressure by turning the small bolt counterclockwise with a wrench to lower the pressure and clockwise to raise the pressure.
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Adjust the PumpTrol's cut-in pressure by turning the large bolt counterclockwise with a wrench to lower the pressure and clockwise to raise the pressure.
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Reinstall the PumpTrol's cover. Turn the water back on and check for leaks at the connection to the pipe.
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Tips & Warnings
The correct cut-in and cut-out pressures depend on your water pump's specifications. Look in the pump's owner's manual for the correct settings.
References
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