At The End Of The Irrigation Season - Netafim SANDSTORM User Manual

MAINTENANCE
5. Visually check the filtration system (externally and inside the tanks, with the aid of a flashlight) for
any damage to the paint. If the protective coating of the tanks and/or manifolds is damaged, see
retouching of the tanks and
6. Check the level of media inside the filters.
• If the level is lower than the media level marker on the filter tank - add media.
• If the level is higher than the media level marker on the filter tank - remove media.
7. Manually stir the media inside the tank and check for media solidification.
• If the media has solidified, crumble it with high pressure water.
WARNING
Do not use tools (such as a shovel) to crumble the media, as this could damage the elements inside
the tank.
8. Open the secondary screen filter (if installed) and check its condition - if necessary, remove the filtration
element and clean it with high pressure water. Put the filtration element back in place and close the
filter.
For further assistance, contact your local Netafim™ representative.

At the end of the irrigation season

ATTENTION
Never leave the filtration system unclean for the winter season.
1. During the last irrigation cycle of the season: Check the filtration system inlet and outlet pressure and
make sure that they and the DP (Delta pressure) fit the system benchmark data.
2. Perform all actions as described in the weekly maintenance section,
3. Check that the backwashing parameters in the controller are correct. If not, enter the correct data.
4. Close the water inlet to the filtration system.
5. Perform steps 2 - 4 as described in the quarterly maintenance section,
6. Check the level of media inside the filters.
• If the level is lower than the media level marker on the filter tank - add media.
• If the level is higher than the media level marker on the filter tank - remove media.
7. Open the secondary screen filter (if installed) and check for gravel. If there is gravel, empty the tank that
is losing media and replace the damaged under-drain diffuser/s ("flute/s" or "mushroom/s")
(see Replacing a damaged under-drain diffuser
8. Perform chemical cleaning of the media (see
9. Turn off the water.
10. Open the secondary screen filter (if installed), remove the screen, clean it and store it in a dry and safe
place with all the filter covers and handles.
• For manual filters: Make sure that the cover gaskets are dry before storage.
• For automatic or semi-automatic filters: Open the filter and check all the inner elements.
11. Lubricate all the screws and bolts of the system. In particular, carefully oil the screws of the shutter
units in the gravel filter and the secondary screen filter (if it is a manual filter).
manifolds, page 16.
part, page 18).
Algae and bacterial growth
SANDSTORM
page
page
SINGLE-/DOUBLE-CHAMBER USER MANUAL 11
™
10.
10.
control, page 13).
Paint