SBCS CHEMTROL CT Series, Инструкция по эксплуатации

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MANUAL CT Controllers
OPERATION Page 36
2.4 - Alarm Low
The ALARM LOW value is set to generate an alarm when the
pH reading falls below the set value. After the alarm value is
set, the ALARM OPTIONS Submenu 1.4.1 is displayed, to set
the feed interlock and alarm buzzer options.
2.5 - Alarm High
The ALARM HIGH value is set to generate an alarm when the
pH reading rises above the set value. After the alarm value is
set, the ALARM OPTIONS screen is shown, asking whether a
high alarm condition should stop the feeder and activate the
alarm buzzer.
2.6 - Time Limit
The TIME LIMIT sets the maximum allowed time (in minutes)
for continuous acid or base feed (see ORP submenus). This
acts as a safety feature to prevent overfeeding in case of
malfunction of the chemical feeder or as an alarm if the feed
tank runs empty.
2.7 - Run Time
The RUN TIME line displays two separate values: the amount
of running time in minutes for each current activation event and
the cumulative run time since last reset to zero. To reset only
the current run time, turn the control mode off and back on. To
reset the cumulative runtime, enter zero in the last column.
After the cumulative run time is reset, the TOTAL TIME
ALARM submenu 3.7.1 is displayed to set the Total Time
Alarm option. It can be used to simulate a low chemical level
alarm by entering the number of minutes needed to empty the
chemical container: i.e. container volume divided by feeder
rate (i.e.110 min = 55 ga / 0.5 gpm).
2.8 - Probe Clean
The Probe Clean Menu is used for automatic rinsing of the tips
of the ORP and pH sensors by injection of a cleaning solution
(usually a weak acid solution) through the recirculation line.
It has three modes of operation: Off, Manual and Automatic
(see Submenu 2.8).
In both the Manual and Automatic modes, it allows a recovery
time for the sensors to prevent chemical overfeeding while the
signal is still affected by the cleaning solution (see Submenu
2.8.1). The recommended minimum is 1 minute.
In the Automatic mode, a 7-day weekly program is used to set
up the ON and OFF times for probe cleaning any day or every
day of the week (see Submenu 2.8.3).
Submenu 2.4.1 and 2.5.1
Submenu 2.7.1
Submenu 2.8
Submenu 2.8.3
PROBE RINSE
OFF
Manual
Auto
PROBE RINSE ON OFF
MO 19:00 19:05
TU 00:00 00:00
WE 19:00 19:05
TH 00:00 00:00
FR 19:00 19:05
SA 00:00 00:00
SU 19:00 19:05
ALARM OPTIONS
Feed lockout YES
Alarm buzzer YES
TOTAL TIME ALARM
Alarm if total
Bleed time exceeds
110 min.
Enter 0 for no alarm