Evoqua WALLACE & TIERNAN SFC, Original Instruction Manual

Page: 104 / 288

104
WT.050.590.000.DE.IM.0719
Functions
SFC
4.
This function can be found on the main "Extern. functions" menu
and contains the following options:
Please note
If this function is activated, alarm relay 2 is no longer available!
The disinfection process is shown schematically below:
The function starts at the times and on the days programmed
automatically, whether the system is in manual or automatic mode.
The process is shown below (see also the schematic diagram on
the previous page):
• Relay 3 switches on to start the dosing pump
The "Dosing time" starts running
At the same time, the "Delay" (the dead time between the
dosing point and the measurement) starts as well
Sample Line Dos OFF OFF - ON
Range-Start 1: 00:00 ---- 9 start times, can be
programmed by day of
the week or the same
start time can be used
for several days, e.g.
1:06:30 MON-SUN
Dosing time 00 min 30 sec 30 sec - 20 min
Delay 00 min 00 sec 0 ... 30 min
SW stop time 01 min 30 sec 1 min 30 sec - 59 min 59
sec (always at least
dosing time + 1 min)
Hold delay 15 min 00 sec 0 - 20 min
Beginning of the sample
water stop time
End of the sample water stop time
Delay
Beginning of the dosing time End of the dosing time
Hold delay
Start
sample water
inlet
disinfection
Relay on
Start hold function:
Controller output constant
mA output constant
RS485 measurement constant
Measurement display off
Display message "SW inlet disinfection"
displayed Stop
sample water
inlet
disinfection
Relay off Measurement display on
Display message
"SW inlet disinfection"
no longer displayed End hold function:
Controller output on
mA output current
RS485 measurement
current