AmeriWater 00HC-4090, Operation & Maintenance Manual

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DISINFECTION LAB STORAGE TANKS
15 98-0123 Rev E
6 DISINFECTION
1.
Disconnect the storage tank from the DI process.
2.
Remove the 0.2-micron filter (if installed).
3. Prepare DI process for disinfection:
a. If using the Silex deionizer, simply remove the packs from the system and set aside.
b. If using DI tanks, remove the inlet and outlet connections from the DI tanks and jumper
these together.
4. After preparing the DI process:
a. If disinfecting the loop, ensure that all devices downstream are off line and removed
during the disinfection process. If disinfecting the loop with ozone, reference the Ozone
Disinfection System manual, 98-0121.
b. If only disinfecting the tank, remove from the loop and install the short disinfection
jumper hose between the filter outlet and return from the loop. It will be necessary to
loosen the worm gear clamps during installation and removal to these connections.
Ensure clamps are tightened prior to applying pressure to the system.
5.
Fill tank with 50 gallons of water from the disinfected RO.
6.
Add ½ gallon of bleach.
7. Turn on the pump and allow this to recirculate for 30-60 minutes.
NOTE: The introduction of the bleach solution in to the UV light will trigger a temporary low UV
condition. This is due to the bleach “clouding” the water in the chamber.
8.
Drain the water from the system and add 50 gallons of water from the disinfected RO.
9. Allow this to recirculate for a minimum of 30 minutes or until there is no chlorine detected at any
of the points of use.
10.
Drain the tank and replace with a new 0.2-micron filter.
11. Reconnect to the DI process and return to service.