The well pump pressure switch is a simple pressure control device, when the measured pressure reaches the rated value, the pressure switch can issue an alarm or control signal.
How a pump pressure switch works ?
The 50/70 well pump pressure switch can control the water pump by collecting the data of internal pressure and external pressure of the system to judge and control the state of the on-off components in a well pump pressure switch short cycling.
After the alarm valve of the water pump with pressure switch is opened, the alarm pipe is filled with water, the water pump with pressure switch is connected to the electric contact after being acted by the water pressure by well pump pressure switch tubing, and the signal of opening the alarm valve and starting the water supply pump is output, and the electric contact is disconnected when the alarm valve is closed.
How to wire a well pump pressure switch ?
The well pump pressure switch diagram are generally 4 terminals, two connection methods:
1. Use the plug connected to the wiring a pressure switch for well pump, insert this end of the plug into socket A, and connect the end of the wire to the first and third terminals of the switch. Then connect the second and fourth terminals to socket B, and the booster pump power supply to socket B.
2. Rust fluid switch and pump power usage: Disconnect the power supply Connect one end of the power plug to the 1st and 3rd posts of the switch, and then connect the 2nd and 4th posts to the other end of the power cord.
Generally speaking, the signal output type of the pressure switch is the NPN or PNP signal called the switch output. This signal cannot drive the load, and the relay needs to be used as an intermediate controller to control the action actuator such as the water pump. Typical types of the NPN or PNP type pressure switch are mechanical pressure switch and electronic pressure switch. For the 12v water pump with pressure switch wiring you can refer follows:
There are also types of water pump pressure control switch which is typical for 110v water pump with pressure switch, because they will not be used in the automatic control system and need to take into account the user’s complex control situation, the relay will be built in the pressure switch. At this time, the output signal line of the single output pressure switch will be There are two ports, one is the common end, which is connected to one end of the built-in relay and the negative pole of the power supply, and the other is the other end of the relay path.
This types of pressure controller support both VAC or VDC power supply. For whatever 220 volt well pump pressure switch wiring diagram, 110v well pump pressure switch wiring diagram or 120 volt well pump pressure switch wiring diagram, you can refer follows:
How to adjust pump pressure switch ?
The Water pump pressure switch adjustment steps are as follows:
1. Loosen the lock nut of the pressure switch and turn the adjusting nut clockwise or counterclockwise as required until the pointer points to the desired pressure value.
2. The adjusting well water pump pressure switch usually has two knobs, which are turned with a flat-blade or Phillips screwdriver. Loosen the lock nut before turning it, turn it clockwise to increase it, and turn it counterclockwise to decrease it.
3. A knob on the constant pressure well pump switch is the starting pressure, and the other is the stop pressure. The appearance of each pressure switch will be different, and it is difficult to determine the specific position of the adjustment knob. Usually on the top or side.
How to reset well pump pressure switch without lever?
You need to find the pressure switch of the water pump, use a screwdriver to loosen the nut on the switch, turn the switch, and adjust the pressure of the water pump to the required range.
Adjust the pressure limit to 1.5MPa (upper switching value), send out a contact signal, and turn the setting value adjusting screw clockwise to make the setting value change from large to small until the switch contact switches at 1.5MPa.
Tighten the locker, adjust the lower pressure limit to 0.5MPa (lower switching value) to send out a contact signal, turn the setting value adjusting screw counterclockwise to make the setting value change from small to large until the switch contact is at 0.5MPa switch.
How to tell if well pump pressure switch is bad ?
Tool to detect the quality of well pump pressure switch:
Pressure test stand (or other equipment that can be pressurized) + multimeter
Install the pressure switch to the pressure test stand, test the action performance of the pressure switch, open the pressure switch, connect its normally open or normally closed contacts with a multimeter, make the pressure switch act, and check whether the normally open or normally closed contacts of the pressure switch can be Reliable on and off.
How to change pressure switch on well pump ？
! Make sure the system is under any pressure before installing and removing the sensor.
> Connect the sensor device to the optional process interface
> Tightening torque range recommended: 25 to 35Nm
> In critical applications (such as severe shock or shock), pressure pipe connections Mechanical decoupling can be achieved through miniature hoses.
Pump pressure switch settings requirements
1. The pressure switch is installed on the system pipe network or on the alarm pipe after the outlet of the alarm valve retarder. The automatic sprinkler system shall use a pressure switch to control the fire water pump and the stabilizer pump, and shall be able to adjust the pressure of starting and stopping the stabilizer pump.
2. The water flow alarm device of deluge system and fire separation water curtain system should adopt jet pump pressure switch.
3. When the Oil pressure fuel pump shut off switch detect the fuel pressure rise, a certain value is reached, the oil outlet of the oil outlet valve opens the output. When the fuel pump is not working, the fuel outlet valve prevents the fuel from returning to the fuel tank, so that a certain pressure is maintained by fuel pump oil pressure switch in the fuel circuit, which is convenient for the next start.
reminder
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