Installation Guide

Checking the Air Pressure
1. Before installing the new pressure switch, first check the air pressure of the pressure tank
AFTER draining it of all water. To check the tank’s air pressure:
a) Disconnect the power supply and drain all water from the tank.
b) Locate the air valve (similar to automobile tire air valve) usually near the top of the
tank. Check the tank’s pressure using an automotive tire pressure gauge.
2. The pressure of the air in your tank must be 2 psi below the cut-in pressure of your new
switch. If this pressure is not set correctly, the pump will run in short cycles (starting and
stopping often), increasing electricity cost and wearing out the pump and/or pressure
switch. See the table located to the right.
905 Hickory Lane, Mansfield, OH 44905 - Toll Free: 800.346.7611 - www.proplumberusa.com - [e-mail]
If you have questions about the operation of this pressure switch, please call or email before returning product to your retailer.
Jet Pump and 2-Wire Submersible Pump (No Control Box) Pressure Switch Replacement
Remove the Existing Switch
1. Disconnect power supply
2. Drain all water pressure from the system
3. Remove existing wires from the pressure switch including the ground wires.
4. Remove the old switch from the system
Switch
Model
PSI Air Pressure In Tank
(When Drained of All
Water)
PPS3050
PPSL3050
28
PPS4060
38
IMPORTANT:
• Cut-in Pressure: Pressure when the pump turns on.
• Cut-out Pressure: Pressure when the pump turns off.
Warning: Pumps use hazardous voltage which can shock, burn, or cause death. Disconnect power to the pump before
servicing the pump, pressure switch, wiring, tank, or any component. This pressure switch will work on both 115 volt and
230 volt AC circuits
IMPORTANT: Make note of which wires are the power supply wires and the pump motor wires. This will help during the
installation of the new switch.
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3. To adjust the tank’s air pressure to 2 PSI below the switch “cut-in” pressure:
a) If pressure is too high, bleed air from the tank by using the automotive tire pressure gauge or the end of a screwdriver.
b) If pressure is too low, use a compressor or tire pump to add air.
c) Recheck the pressure with the tire gauge and continue to add or remove air until the pressure is 2 PSI below the switch
“cut-in” setting. (For example, a tank used with a 30/50 Pressure Switch should contain 28 PSI of air.)
IMPORTANT: If your tank is not holding the air pressure that you added, then your tank may be defective. If you check the air
pressure and water comes out of the air valve, that is a sure sign that the tank is defective and needs to be replaced. For further
tank questions, please contact the tank manufacturer.
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Installing the New Switch:
1. Secure the new switch to the jet pump motor or position the switch on the piping for submersible pump system. Use thread tape
on pressure switch inlet to prevent leaks. Ensure that no thread tape is blocking the opening of the switch or pipe fitting. Any
blockage from the thread tape or debris will cause the switch to malfunction and not shut off the pump.
2. Remove the switch cover and feed wires from the pump motor and power supply through the openings on either side of the
switch.
3. Attach motor wires to the terminals marked “LOAD” or “2 and 3” terminals. Attach the ground wire to the Green Ground Screw.
See Figures 1 and 2.
4. Attach power supply wires to the terminals marked “LINE” or “1 and 4” terminals. Attach the ground wire to the Green Ground
screw. See Figures 1 and 2.
5. Re-install switch cover and reconnect the power. Test the system several cycles for proper operation.
IMPORTANT: For safety, the switch must be grounded by direct metal to metal contact. Motor must be grounded to conform to
local electrical codes. CONSULT A LICENSED ELECTRICIAN.
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