Pool Controls Ozone Chemigem User Manual page 10

Installing the Feed Tubing to the Chemical drums
Cut lengths of tubing that will reach from the base of the valves or dose pumps to the base
of the chemical drum. Make sure the chemical drums are in a safe and secure location,
preferably about 2 metres from the Ozone Chemigem.
Connect one end of a tube to the inlet side of the valve or dose pump (the direction of flow
is indicated by an arrow on a label or the front cover of each dose pump.)
Drill an 8mm hole in the lids of the chemical drums and pass the tubing through the hole in
the drum lid. Place a sinker on to the end of the tubing that will be in the drum and then
attach the drum filter.
Connect the correct pump to the correct chemical drum.
Before placing the tubing into the drum, measure the tubing against the outside of each
drum and wrap several turns of PVC tape around the tubing above the drum lid so that the
drum filter will be 10-15mm above the bottom of the drum. Lower the drum filter and sinker
into the drum and screw on the lid.
Connecting the Dose Pumps – Outlet Side
The injection/probe manifold comes with a Y-piece and gas loops already installed.
Cut lengths of tubing that will reach from the base of each dose pump to the injection
manifold tubing. Connect one end of the tubing to the outlet side of the dose pump (the
direction of flow is indicated by an arrow on the front cover of the pump.) Connect the
other end of the tube to one of the loops near the injection manifold.
Make sure the gas loops are vertical as this will trap any gas from chemical mixing.
Installing the Venturi Injector
The Venturi Injector uses a bypass valve to create pressure across the venturi to produce
a vacuum. Ensure that the water flows in the correct direction. Any backpressure on the
outlet of the Injector will mean that the valve must be closed further to produce suction.
The Injector Manifold should be installed above the water line. For pools that have the
equipment installed below the water line THE MANIFOLD MUST BE INSTALLED AS HIGH
AS POSSIBLE. This reduces the static backpressure of the pool water.
The Manifold should be installed as the last piece in the return line and should avoid
pressurised return jets. The returns to the pool should be angled downwards to allow the
maximum contact time of the ozone with the water.
The Ozone NRV must be installed close to the ozone outlet od the unit.
After installation the Injector must be set to create as vacuum. With the pump running the
valve must be closed until a hissing sound is heard from the venturi. Check the pool
returns for a good amount of air bubbles returning to the pool.
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