Preventative Maintenance
If the pressure difference across the filtration system is over 5 meter/ 0.5 bar and the flushing cycle does not reduce it:
- Check that the flushing flow rate.
- Adjust the flow control valve if necessary.
- Make sure that the water from the backwash manifold is running free.
- Check the duration of backwash and that the water that drains in the last 10 seconds of flushing is clean.
-If water is dirty at the end of the flushing – increase the duration of flushing – if required, increase the back wash duration and perform 3 consecutive flushing cycles.
If the flushing cycle does not start but the controller is initiating the flushing signal and the solenoids are reacting ("clicking"):
- Check the control screen filter in the water control head. Clean it if necessary and perform manual flushing.
- Check for clogging inside the solenoid valves – clean if possible or replace with a new solenoid.
- Check for clogging of the hydraulic control tubes – open the clogs and clean if necessary.
If the drippers are clogged:
- Check the level of gravel inside all the filters and check visually that the media height is 40cm above the filter elements. If there is less than 40 cm, empty the media from the gravel filter, and replace the damaged filter element.
- Check the duration of the backwash and be sure that the water that drains during the last 10 seconds of flushing is clean. If the water is dirty at the end of the flushing – increase the duration of flushing and perform 2 manual flushing cycles.
- Check for the presence of bacteria in the media – grab the media with your hand – the media should be soft and "flow" between your fingers – if it is "sticky", perform the chlorination process as described in the maintenance chapter section entitled "Before the Next Irrigation Season".
- Check for "channels" inside the gravel. If they exist – perform the chlorination process as describe in the maintenance chapter section entitled "Before the Next Irrigation Season".
If the media (gravel ) is running out from the filters during backwash:
- Adjust the flow control valve on the backwash manifold and reduce the flow until the media stops running out.
- Check the level of media (gravel) inside the filters. Add media if the level is less than 40 cm, or take out media if the level is more than 40 cm.
For more information or enquiry, please contact Environmech Sdn. Bhd.
Contact us: http://www.environmech.com/p/contact-us.html
Website: www.Environmech.com
