48" AGF 910101-001049 / 01.2020
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3.
Leakage Test - Before Filling the Media
1.
Close the filter's service ports.
2.
Make sure that the outlet connection of the filtration system to the water system is closed.
3.
Slowly open the inlet port and let water flow into the filter.
Pay
Attention: maximal pressure allowed is 6 bar (85 psi)!
4.
Check the valves' connections and manifolds for leaks and correct any leak found.
5.
Close the water and empty the water from the filter vessel.
4.
Filling-Up the Media
1.
Use personal protective gear when handling the media. Follow the media
safety data instructions as provided by the media's manufacturer.
2.
Remove the top access cover of the AGF filter vessel. Before adding any
media to the filter, visually inspect the inside of the filter tank to make
sure that there are no foreign objects inside.
3.
Visually check the nozzle covers and connector pins to be sure that they
are all in place and secured straight.
4.
Fill the AGF vessel with water until all the filter nozzles are covered.
5.
Fill the media through the tank's top access port up to the level indicated
on the label affixed to the filter tank exterior (35 cm above distribution
nozzles).
If two media grades are used, start with the coarse media and fill it just
above the nozzles line (
1
), pour the finer media to the level indicated on
the label affixed to the filter tank exterior, 35 cm above distribution
nozzles (
2
).
6.
Remove the remaining media particles from the threads and covers' sealing area.
7.
Check that both the top and bottom covers are in place and tighten them firmly by hand only.
5.
Initial Operation
1.
Open the main raw water supply valve and let the pressurized water flow into the system.
2.
Check the system's operation under pressure.
Minimum pressure for backwashing is 2 bar (29 psi). It should be measured during backwash at the port located in the
outlet manifold of the system.
3.
Perform a manual backwash cycle and continue backwashing the filter until the drain water is clean.
4.
Make sure that the backwashing control flow valve is set to 40-60 m
3
/h (155-180 US gpm) and no media is washed out
to the drain.
5.
Set the DP switch to 0.5 bar (7 psi) and set the required backwashing time interval.
1
2
