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losses should match the flow rate and values given in the tables.
The switchboards have a system in place for delaying the start of
the washing cycle to avoid this situation. See the model used in
the controllers section.
3. Repeated backwashing. This can appear for different reasons:
• Due to a high pressure drop (see previous point).
• Short delay time for starting the washing cycle (see contro-
ller manual).
• Due to excess impurities in the water, in which case reducing
the flow rate is recommended until the ducts are clean. After
waiting some time, the flow rate can be increased gradually.
• Check that the differential pressure is suitable.
• Because washing is not completed correctly, due to the was-
hing time being too short or a lack of washing pressure check
the programmer manual.
4. Washing is not carried out and there is a loss of pressure.
Check that the base plugs are connected to the solenoids and that
the safety screws are tight. Check that the stopcock controlling
the supply to the auxiliary filter is open.
It may be that the pressure connections to the sensors or to the
pressure switch are wrong or badly adjusted. The three-way val-
ves or solenoids can be in an incorrect manual position
5. Problems with suction devices.
If there are water leaks when pressure is first applied or an object
is introduced at closure, close the optional shut-off valve and/or
eliminate the pressure before disassembling by unscrewing the
base. Clean it, screw it back on, and open the air valve.
Starting up after a long shutdown period
1. Start the system up and slowly increase pressure. Complete
two or three washing cycles in a row by pressing the manual bu-
tton on the switchboard. Check that the maximum pressure su-
pported by the system is NOT surpassed.
2. The discs may be dry and compacted due to being dirty. It is
recommended to remove and clean them by following the ins-
tructions and photographs for each filter.
3. The controller has a partial counter for the number of washing
cycles. If you set it to zero, save the number of cycles. There are
controllers which keep a total count.
4. It is recommended to replace the discs with new ones every
7,000 cycles.
5. It is recommended to change the seals and membranes or dia-
phragms every 14,000 cycles.
6. Clean the solenoids if the drainage microtubes marked in ye-
llow no longer drain.
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