ProMinent Flow Control 3 Operating Instructions Manual page 22

Troubleshooting
Fault
Press the P key to return the metering pump to operating status after one of the following faults.
Fault
The metering pump stops
during priming (red LED
display lights up, "Error"
identifier appears and
"FLOW" flashes)
The metering pump stops
when the Flow Control is
being adjusted (red LED
display lights up, "Error"
identifier appears and
"FLOW" flashes)
The metering pump stops
during operation (red LED
display lights up, "Error"
identifier appears and
"FLOW" flashes)
22
Cause
The Flow Control has not
emitted any acknowl‐
edgement pulses due to
air in the liquid end
The Flow Control has
emitted too few acknowl‐
edgement pulses in suc‐
cession
There is gas in the liquid
end - gaseous feed
chemical
There is air in the liquid
end – the dosing tank is
empty
Remedy
During priming, remove the metering
monitor cable - the "Flow" function is
disabled during this time.
Press the P key.
Disconnect the metering monitor
n
cable from the metering pump
Bleed the liquid end
n
Insert the metering monitor cable
n
into the socket on the metering
pump
Increase the number of acknowl‐
n
edgement pulses (see FLOW
menu).
Fill the dosing tank
n
Disconnect the metering monitor
n
cable from the metering pump
Bleed the liquid end
n
Insert the metering monitor cable
n
into the socket on the metering
pump.