Ozne System Maintenance
The posi-vent is located on top of the off-gas tank. It is an electrical component designed to release gases such as sulfur, methane, ammonia, and ozone from the water and the tank, so there is no smell in the water.
When water flows through the filtration system, the float switch is triggered, creating an electric current in a wire to activate an electromagnet in the posi-vent. When this magnet pulls the steel piston away from the exit hole in the posi-vent head, any gases in the tank can escape along with a little water into a tube that is connected to a drainpipe. When water is turned off the power from the flow switch turns off, and a spring on the back side of the piston pushes the piston forward to its normal position. There is a flat rubber button on the hole-side of the piston that is designed to seal off the release hole.
This means that when water is flowing, the posi-vent should be open and the black drain tube should jerk and wiggle with the flow of water and bursts of air from the ozone pump.
When water is off, the tube should be still: there should be nothing flowing out the drain tube because the posi-vent is closed.
The pressure on the ozone pump when in operation should be 90 psi or above. What happens over time is that the pressure starts out high with a new pump, but gradually the gaskets on the piston, plate, sleeve and head wear down with use and need to be replaced. If the pressure is not inspected periodically the water quality will gradually decrease due to diminishing ozone contact, and an unmonitored pump could drop to zero psi before the decrease has been noticed. With no ozone, the water quality will return to its original raw state from the well, and the media tank will begin to clog. It would be wise to put a pressure gauge on the ozone pump at least once every six months to assure the proper level of ozone injection.
- Pump Rebuild
There are several models of ozone pumps, so it is important to order the correct rebuild kit. Basic tools required are Allen wrenches, screwdrivers, lubricant, 0000 steel wool, and rags. Replacement instructions come with each kit. Rebuilding a pump can vary from 45 minutes to a couple hours, depending on how worn and stuck the parts are.
- Check Valves