17
ATTENTION
If the watermaker get air, (or if some other problem occurs) the automatic hydraulic valve may
stop in a central position. This means that pressure on both sides of the valve are the same and
the unit is effectively stalled and has to be manually restarted.
In this case the working pressure goes up suddenly (up to 9 Bar) and the pumps are switched off
from the pumps pressure switch. The pumps then have the tendency to try to restart when the
pressure decreases, and then to jam again, resulting in a typical start-stop noise. After approx. 20
sec. the computer recognize the problem , and turn off the pumps, and the message “WARNING
SYSTEM BLOCKED” is displayed.
This event, besides being very unusual, does not damage the system, but it is necessary to reset
the valve with the following simple procedure:
RESET PROCEDURE
1. Turn the system off.
2. Open the reset valve (lever in horizontal position).
3. Screw the positioner knob clockwise until it can be moved no further.
10 turns at least are necessary.
4. Unscrew the positioner knob up to the original position, until when it is blocked
back.
5. Close the reset valve (lever in vertical position).
6. Restart the system
To Next Page
Loading...