ClearWater CD15/O2, Installation & Maintenance Manual

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ELECTRICAL INTERLOCK WIRING CONNECTIONS
P-20/O2 CD-20/02 ELECTRICAL WIRING CONNECTIONS - 120/240 VAC 60 HZ MODELS ONLY
INITIAL START-UP AND CALIBRATION
The air preparation system on the ClearWater Tech Models M-15/O2 and P-20/O2 is plumbed and wired at the factory.
On both models, the air flow will need final adjustment. On the front of the electrical interlock box is a VAC/PSI gauge
and an SCFH (Standard Cubic Feet per Hour) gauge. On the side of the oxygen generator is a 0-100% flow gauge.
100% on this gauge equals 20 SCFH at 55% purity.
The side stream booster pump/ozone system will only function for 15 seconds (due to an electrical interlock relay) without
vacuum from the venturi injector. This is a safety feature designed to prevent the ozone unit from operating without the
injector drawing the gas into the water.
After all the previous electrical and plumbing connections have been completed, the system is ready for start-up and calibra-
tion.
Starting position:
1. Water flowing in the main line.
2. Open the ball valves to the ozone loop (side stream). Allow all air to bleed out of the system before activating the
pump to avoid plumbing “hammer” in the system.
3. Switch the main service disconnect box to the ON position.
4. Turn the ozone generator ON at the switch located on the front of the electrical interlock box. Be sure the ozone
switch on the ozone generator is ON (the light will illuminate when energized). Note: The booster pump, ozone
generator and oxygen generator should now be operating.
5. The injector can now be adjusted for suction. Observe the SCFH gauge and close the gate valve on the injector
manifold until you achieve the SCFH specified for the ozone generator being installed (see chart below). Note:
The system will only operate for 15 seconds without vacuum. To reset the time sequence, turn the ‘ON OFF
AUTO’ switch OFF and back to ON.
SCFH Settings:
Model Venturi SCFH Operating SCFH Vacuum
M-15/O2, CD-15/02 5 to 7 7 max. -5
P-20/O2, CD-20/02 10 to 14 14 max. -5
VAC/PSI Gauge
This gauge measures the relationship between the suction at the injector and the pressure of the oxygen feed gas.
Under ideal conditions, this gauge should show a slight vacuum. For example, if the PSI gauge is in the ‘pressure’
range, the suction on the injector should be increased or the SCFH decreased (at the needle valve on the SCFH
gauge) to evacuate the pressure being introduced to the ozone unit.
VAC/PSI Gauge with the SCFH Gauge
Note: The ideal setting is to have the prescribed SCFH for your unit with the vacuum gauge in the -5 to -15 range.