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MAINTENANCE
Algae and bacterial growth control
WARNING
Sodium hypochlorite (NaClO) and hydrogen peroxide (H
chemicals. All application regulations and safety rules must be observed. Store and handle them
according to safety regulations.
Before handling sodium hypochlorite (NaClO) or hydrogen peroxide (H
specific safety, health protection and first aid information and instructions. Be sure you have all
required first aid at the site, as instructed.
Concentrated liquid sodium hypochlorite (NaClO) or hydrogen peroxide (H
metal (especially threads that are exposed to water). Be careful when applying them and avoid the
spillage of any of the liquid onto exposed metal parts. Should any of the liquid come into contact
with metal parts, immediately wash thoroughly with fresh water.
1. Perform 1 or 2 manual backwashes of the system (as needed), using the manual option in the controller.
2. Release the pressure from the filtration system. Open any valve downstream from the filtration system
or the manual valve (if installed) on the outlet manifold end-cap, until the pressure is fully released.
Check the pressure gauge to be sure it is at 0 before proceeding. Do not drain the system.
3. Open the top service ports of all the tanks.
4. Make sure that the tanks remain two-thirds full with water. This is essential for the success of the
chemical treatment.
5. Pour the required quantity of sodium hypochlorite (NaClO) or hydrogen peroxide (H
according to the table below.
Quantity of sodium hypochlorite (NaClO) (liter) Quantity of hydrogen peroxide (H
Tank
diameter
Domestic liquid
(inch)
3% concentration
12
16
20
24
30
36
48
6. Gently stir the media inside each tank with a wooden stick.
WARNING
Take care not to damage the tank under-drain diffuser/s ("flutes" or "mushrooms").
7. Wait at least 3 hours for the chemical contact time.
8. Close the top service ports of all the tanks.
9. Pressurize the system.
10. Perform 1 or 2 manual backwashes of the system (as needed), using the manual option in the controller.
For further assistance, contact your local Netafim™ representative.
Technical liquid
10% concentration
0.7
0.8
1.1
1.5
3.0
5.0
10.0
SANDSTORM
O
) are dangerous toxic and corrosive
2
2
0.25
0.3
0.4
0.5
1.0
1.5
3.0
SINGLE-/DOUBLE-CHAMBER USER MANUAL 13
™
O
), carefully read all the
2
2
O
) can damage exposed
2
2
O
) into each tank
2
2
Technical liquid
30% concentration
0.15
0.15
0.2
0.2
0.3
0.5
1.5
O
) (liter)
2
2
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