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ATMOSPHERIC WATER STORAGE TANK CLEANING GUIDE
WARNING: Wear protective gloves, protective clothing, face protection, and eye protection such as safety glasses.
WARNING: Do not breathe in fumes or drink water being treated with Dutrion tablets or bleach.
NOTE: Dosing recommendations are intended for routine maintenance. Visible bio-films will require manual
removal/cleaning and additional tablets or bleach for treatment.
DO NOT use system until after you have thoroughly flushed the tank.
CLEANING TANK WITH DUTRION TABLETS
NOTE: Do not leave open packet in tool box.
Do not keep packet if unsealed or open.
1. Make sure tank is 1/4 full of water.
2. Close ATM tank outlet valve.
3. Relieve pressure by opening a faucet or briefly
running equipment that is using optimized water.
4. Put RO processor into bypass.
5. Drop tablets into tank and close lid.
Depending on tank size use the recommended
number of 4 gram Dutrion tablets.
• 16 Gallon, 1 Tablet
• 30 Gallon, 2 Tablets
• 50 Gallon, 2 Tablets
6. Let tank sit with the LID CLOSED for 30 minutes to
get full effect from Dutrion tablets.
7. Disconnect the 1/2" inch blue RETURN FROM ATM
TANK tube at the RO processor connection. Attach
additional length of 1/2" tubing to the end of the tube
you just disconnected. Run that tube to the drain, keep
it clean and secure it while maintaining an air gap.
8. Open the tank outlet valve.
9. Move RO processor inlet valve to partial bypass
position (45 degrees). Empty the entire tank. When
tank is empty and system status is yellow, water will
need to fill to minimum level. After water refills tank
above low level sensor, the status light will flash
yellow and the repressurization pump will start after
5 minute delay.
10. Allow repressurization pump to flush tank two more
times. Rinse out tank with clean water.
11. You will have to disconnect "RETURN FROM ATM
TANK" tube from drain. When nearly empty, using
the "RETURN FROM ATM TANK" tube, spray the
interior surfaces of the tank with water to assure a
thorough rinse.
12. Reconnect "RETURN FROM ATM TANK" tube to RO
processor.
The system is now ready to be put back into normal
operation.
Part number for 4 gram tablet: 150-60024
PENTAIR EZ-RO INSTALLATION AND OPERATION GUIDE
CLEANING TANK WITH BLEACH
1. Fill tank. Put RO processor into bypass if the tank
isn't full already.
2. Close ATM tank outlet valve.
3. Relieve pressure by opening a faucet or briefly
running equipment that is using optimized water.
4. Depending on tank size add the recommended
amount of unscented chlorine bleach:
• 16 Gallon, 8oz.
• 30 Gallon, 15 oz.
• 50 Gallon, 24 oz.
5. Let tank sit with the LID CLOSED for at least 20
minutes to get full effect from the bleach.
6. Disconnect the 1/2" inch blue RETURN FROM ATM
TANK tube at the RO processor connection. Attach
additional length of 1/2" tubing to the end of the tube
you just disconnected. Run that tube to the drain, keep
it clean and secure it while maintaining an air gap.
7. Open the tank outlet valve.
8. Move RO processor inlet valve to partial bypass
position (45 degrees). Empty the entire tank. When
tank is empty and system status is yellow, water will
need to fill to minimum level. After water refills tank
above low level sensor, the status light will flash
yellow and the repressurization pump will start after
5 minute delay.
9. Allow repressurization pump to flush tank two more
times. Rinse out tank with clean water.
10. You will have to disconnect "RETURN FROM ATM
TANK" tube from drain. When nearly empty, using
the "RETURN FROM ATM TANK" tube, spray the
interior surfaces of the tank with water to assure a
thorough rinse.
11. Reconnect "RETURN FROM ATM TANK" tube to RO
processor.
The system is now ready to be put back into normal
operation.
FOODSERVICE.PENTAIR.COM | 25
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