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tIPS On flOW AlArMS
• There is only one flow meter per ACC controller, and
controllers do not share information with one another.
If a controller with a meter "sees" flow caused by
another controller, drawing water from the same
point of connection to the water supply, the controller
will experience many false alarms, because it cannot
account for the flow. Do not combine controllers on
the same point of connection.
• Most false alarms occur because the Limit % is set too
close to "normal" or learned flow. Irrigation systems
often experience fluctuations in the amount of flow
and increasing the limit % reduces the possibility of
false flow alarms.
seTTInG ClIK™ sensor operaTIon ............................................
The ACC is capable of monitoring four individual
Clik-type sensors, in addition to the flow sensor. Typically
these sensors are weather-related sensors such as the
Mini-Clik
or Rain-Clik™ rain sensors, the Freeze-Clik
®
temperature sensor, or the Wind-Clik
Each Program has three response options. OFF, SUSPEND
or PAUSE.
ACC version 4 or later is also capable of monitoring an
ET Sensor as an alarm input, and may also receive Clik
(and Flow) sensor inputs via an ICD-SEN sensor decoder.
These options are enabled with the extended features at
Set Sensor Operation for setting Locations. See Sensor
Locations on page 35 for more information.
Each sensor (1–4) will also show its current state, as
either ACTIVE (in alarm) or INACTIVE (normal or no
alarm). ACC sensor inputs are normally closed. An open
sensor is ACTIVE and shows an alarm condition.
• OFF indicates that the sensor will not respond to that
sensor. If the selection is set to "OFF," the current state
will always be shown as "Active," unless a sensor is
connected to the sensor terminals. In that case, the
state will change to "Inactive," because the circuit will
be closed. The programs will still ignore the sensor,
however, because the setting is set to "OFF."
30
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wind sensor.
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• The primary purpose of Underflow alarms is to protect
a Pump from deadheading, if a station has failed to
open. If a station that has learned flow is activated for
test purposes without turning on an actual valve, an
Underflow alarm may occur. This is normal.
• When two stations are running together with very
different flows, such as a high volume spray or rotor
zone running together with a low-volume drip zone,
it is possible that an alarm condition on the low flow
zone may be missed. This is because the Limit % of
the high flow zone may include the entire flow range
of the low flow zone. For example, a 40 GPM zone with
a limit of 115% needs to see 46 GPM to alarm. If it is
running together with a 4 GPM drip zone set to 115%,
the drip zone could exceed its alarm limit (4.6 GPM)
but the total would still be under the combined alarm
limit for both stations.
• SUSPEND indicates that the program will stop any
current watering, and inhibit watering from beginning
should a start time pass. If a SUSPENDed Program
is resumed, it will resume where it should be in "real
time". The stations that were missed will not irrigate,
but the Program will end at its normal time.
SUSPEND is the recommended setting for irrigation
programs when a sensor shutdown is desired.
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