DIY Vacuum Pump Switch

Step by Step Guide with Video's - How to make a switch to control your DIY Vacuum Pump for sump setup and regular. Automatically control the level of your tank connector or expander for about $2. Use a 120v or 240 Volt switch with a modified floater to turn your pump on and off.
 
Here is a switch with a floating device, the switch is normally OFF but when I add water it turns the Vacuum Pump ON and fills the top expanding tank. This isn't as user friendly as our Plug and Play automatic electronic leveling systems but it gets the job done. As long as you set it up right you can make yourself a very inexpensive DIY version. Just add a floater and KEEP AWAY FROM WATER. I velcrowed mine on the side.
 
Here's a Diagram of how to rig your DIY Vacuum Pump with your switch.  This works as a backup in case your top tank level goes down, also when you are filling your tanks. It will need to be adjusted so that it shuts off before water gets in the tube. If water gets into a converted air pump it will stop working, also is a very dangerous fire hazard if not used properly.
 
 
 
1. What you Need: Vacuum Pump (DIY or other), High Voltage Switch with wires (120v+), 2 elecrical wire plugs screw caps, 1 rubber band, 1 piece of styrofoam, 1 5" square wood piece, 1 small pointed screw.
 
 
Tools Required: Drill, Small Drill Bit, screwdriver, saw, sidecutters, plyers.
 
Here is a video demonstration how a cheap switch can operate your top tank.
 
2. Split the ends of the wires on the switch.
 
 
 
 
3. Give some room so the pump can be on the ground and switch can be on the side of the tank.
 
 
 
 
4. Cut the wire at the position shown above and split the wires about an inch.
 
5. Splice these wires and connect one to each end of the switch wires.
 
 
6. Screw caps on each end then electrical tape the wires completely sealing them as good as possible, keep dry at all times.
 
 
Now you just need to make a floater on the switch. This switch is ON in the UP position. There is still spring in the switch when the spring is removed. Add weight to the floater so the switch is OFF in the DOWN position. This way when water rises the floater will rise and turn the switch ON, bringing the water level up in the top tank.
 
 
7. Remove spring from swich if there is one.
 
Be sure to tape the modified ends and around the switch electrical points, to make sure all electrical contacts are protected with electrical tape.
 

8. Cut the end of the arm if using this switch and install the floater, use a wood stick with a piece of foam as shown in video's or come up with your own floater, be sure that the pump system operates correctly before trying to use in a setup.

  Spinny end is removed and the wood piece is used to cut a hole in the switch arm.

9. Drill a hole in the switch arm as shown below.
 
10. Screw the piece of wood to the arm and use a rubber band to secure a piece of foam to the end of the switch. Use Strong Velcrow to hold switch or similar method. Secure switch on side of tank at desired water level.
When air builds up in the top tank, the bottom tank will fill with water to compensate risking an overflow of water. To prevent this use a simple switch as shown here in this video. It will automatically refill the top tank when bubbles build up or if there is somehow a leak.  Also see other VIDEO'S for info on setting up your automatic water leveling system!! See below if you have a sump system.
 
 
 
 
You should now have what is pictured below. A DIY Vacuum Pump controled by a switch with a water level float on it, use either a floaty method or top sensor setup.
 
For a Sump switch, follow these steps.
Drill a hole in your piece of wood the size of the wooden dowel or a little smaller, insert the dowel and secure with a screw. Place the foam at the end of the dowel. Use your own measurements so the float will move freely in your sump tank activating the switch automatically.
 
If you have a sump you will have to design the floater differently. Shown is a wooden dowel connected to the switch.
 
A sump tank needs an extended version of the floater switch.
 
We recommend using our Top Sensor Assembly with these switches because if water gets into the DIY Vacuum Pump it will be an electrical hazard.
 
Disclaimer: always use eye protection and safety measures when building diy projects, see disclaimer we are not responsible for accidents or injuries because of any information from this website, we offer informational service only.

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