REVERSE OSMOSIS SYSTEMS RO 4... /E /EL - INSTRUCTIONS MANUAL
s.r.l.Milano - ITALY
Page 10 of 25
ro4e_mi-r10.doc -
r. 10
The visualizations available on the display of the programmer are :
"SERVICE PUMP"
This visualization is always available; the total time of working of
the system (hours) is also visualized.
"NO EXTERNAL
ENABLING"
When this visualization appears, it indicates that the external
signal enabling the working of the system is missing (clamps 9-10).
"NO WATER REQUEST"
When this visualization appears, it indicates that there is not any
request of water supplying by level switches.
"MINIMUM PRESSURE
ALARM"
The alarm acts when the inlet water pressure drops below 0.8 bar
(80 kPa), even if the cause of the pressure drop is a defect of the
inlet solenoid valve
EI
.
The alarm, few seconds delayed, stops the working of the pump P
(if its selector is on "AUT" mode) but does not close the inlet
solenoid valve
EI
. The alarm and its block can be reset by turning
the pump mode selector on "RESET".
The alarm does not act if the selector mode of pump is on "MAN".
"PUMP ALARM"
It is ON if the control does not receive the feed-back from pump P
contactor that the pump is ON, when this pump should be ON
(automatic command).
This alarm switches the block of the whole system; the alarm and
its block can be reset by turning the pump mode selector on
"RESET".
"HIGH CONDUCTIVITY"
the alarm is driven by the conductimeter
COND
when the
conductivity of treated water overpasses the set-point value. The
factory set is approx. 40 µS/cm. The alarm does not stop the
working of the unit.
The above listed alarm are joined in a free voltage contact for remote report.
