Maxima MPG Cod. EM00136006
rev. 1.1
16
3.1.5
Checking the level of the liquid to be dosed
A level sensor can be used to check the level of the liquid to be dosed.
Two operating modes are available:
14)
Level alarm with pump cut-out: Level sensor connected to pins n° 8 and 9 (see CONNECTION
LAYOUT). When the liquid reaches the required level the pump cuts out (pump stopped and
Stop
icon
lit). The
Level
icon and
Alarm
LED switch on, on the Display. Once the liquid level is corrected the
Level
icon and
Alarm
LED switch off and the pump starts working again (
Stop
icon off).
Level alarm without pump cut-out: level sensor connected to pins 8 and 10 (see CONNECTIONS LAYOUT).
When the liquid reaches the required level the pump does
not
cut out. The
Level
icon switches on, on the
Display and the
Alarm
LED starts flashing. Once the liquid level is corrected, the
Level
icon and
Alarm
LED
switch off.
3.1.6 Flow
Control
The Flow Control function is used to provide control over the correct dosage by the pump and can be enabled
in all operating modes.
The flow sensor is connected to PINS 7 and 8 on the pump, which gives an impulse each time the pressure
detected at the pump’s intake varies. The software controls the relationship between the number of strokes made
by the pump and the number of impulses picked up by the flow sensor. After 8 consecutive strokes by the pump
for which there is no corresponding impulse by the flow sensor the pump stops, the
STOP
icon and the
Alarm
LED switch on.
When programming the functions, for each operating mode there is a step, indicated by the
Flow
icon flashing
that allows you to enable Flow Control. In display mode, the Flow icon stays lit while Flow Control is enabled.
WARNING:
Enabling Flow Control without connecting up the contacts causes the
pump to stop after its first 8 dosing strokes.
