REVERSE OSMOSIS SYSTEMS RO 4... /E /EL - INSTRUCTIONS MANUAL
s.r.l.Milano - ITALY
Page 23 of 25
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7.5. How to adjust the min pressure switch PC
The factory set point of the pressure switch PC is approx. 0.8 bar (80kPa). Whether further
adjustment should be required, proceed as follows :
•
switch OFF the main power of the control panel QE.
•
remove the cap of the electrical connector on the head of the pressure switch, by
unscrewing the screw placed in the center of the cap.
•
unscrew 2 turns the hexagonal head holed screw placed in the center of the pressure
switch.
•
using a (cut edge) screwdriver, through the hole of the hexagonal head screw, adjust the
turns of the internal screw of the pressure switch until the correct set-point is reached.
•
to check if the adjustment has been correctly made, put on again for a while the cap on
the electrical connector, switch the power ON, start the pump on "MAN" and close partially
the inlet valve V1, in order that the min pressure switch acts. Check on the pressure
gauge M1, on filter inlet line or the M2 on pump inlet line, the set value of pressure of the
pressure switch.
•
when the adjustment is completed, screw on again the holed screw in the center and the
electrical connector.
7.6. Disposal
In the case of the disposal of the system or components of it, follow local laws and
regulations concerning the materials of which they are made. Take note that membranes and
filtering elements are classified as simple plastic material, they are not toxic or harmful.
