Hunter X-CORE

ADVANCED FEATURES (CONTINUED)
Use the ▲ or ▼ buttons and the ◄ and ► buttons to navigate through
the Custom, K-Factor, and Offset screen. Once you navigate to a number,
it will ash. The number may be changed by pressing the + / – button to
either increase or decrease the value. Once you have completed entering
the K-Factor and Offset specied by the manufacturer of the ow sensor,
use the ▼ button to return to the main Sensor Conguration screen.
If an HFS sensor has been selected and programmed in the Sensor
Conguration screen, the main RUN screen will indicate a ashing ow rate
anytime a station is irrigating. If the station's ow has not been learned or the
station has not been enabled for ow monitoring, which will be discussed
in the Flow Operation and Manual Operation section, the screen will still
indicate a total ow of 0.0 GPM because the HFS has been selected.
Flow Operation
The Flow Operation feature allows you to program ow monitoring
functions for each station. You can program the controller to either monitor
ow for a station or not monitor ow for a station.
1.
Turn the dial to the ADVANCED FEATURES position. Use the ▲ and
▼ to select Flow Operation and use the + button to enter.
2. Use the ◄ and ► buttons to navigate to the station you would like
to program.
3. The cursor will be displayed next to Monitored. Use the + / – button
to enable or disable ow monitoring for that station.
If ow monitoring is enabled (Yes), you will be given the ability to change
certain characteristics of each stations monitored ow. As soon as the
station is enabled the new screen will appear with the following selections:
• Expected Flow – the amount of ow expected for that station in
Gallons Per Minute (GPM )or Liters Per Minute (LPM)
• Overow – Can be set from 110% to 300% of Expected Flow. During
system operation, if the station ow exceeds the Overow limit, the
controller will shut the system down and begin diagnostic testing. For
example, if the expected ow is 20 GPM and the overow is set to
115%, the actual ow would need to exceed 15% (3 gallons) of the
expected ow. Therefore, the station would need to exceed 23 GPM
before the controller would go into overow alarm.
• Underow – Can be set from 10% to 100% of Expected Flow. During
system operation, if the actual station ow falls below the Underow
limit, the controller will shut the system down. For example, if the
expected ow is 20 GPM and the underow is set to 50%, the actual
ow would need to underow by 50% (10 gallons) of the expected
ow. Therefore, the station would need to ow at a minimum of 10
GPM before the controller would go into an underow alarm.
• Start Delay – Can be set from 5 seconds to 10 minutes. The Start
Delay prevents premature system shutdown due to erratic ow within
the mainline by providing a delay before the system shutdown occurs.
It allows the system to stabilize prior to shutting the system down
during Overow and Underow conditions.
After the station has been enabled, press the ▼ button to select any of
the features mentioned above. With the ► cursor pointing to the ow
characteristic, press the + / – button to increase or decrease the value until
the desired number is reached.
If ow monitoring is enabled for a specic station, the factory preset
values will be displayed. The expected ow will be blank, because the
actual learning process has not taken place. The learning process will be
discussed in the Manual Operation, Learn Expected Flow section. Overow
will be 115%, underow will be 50%, and the preset Start Delay will be set
to 1 minute.
Flow Operation is necessary to program in order for the controller to know
which stations to monitor. Important additional steps that need to be taken
to complete the ow monitoring setup. A ow sensor needs to be assigned
in the Sensor Conguration screen, and the stations set to be monitored
need their ows to be learned. These steps are required in order for ow
monitoring to occur.
If a station has been enabled for ow monitoring, it is important to know
that the System Status Dashboard ow light will become active for that
station. If the other components to complete the ow monitoring process
have not been programmed, but the station’s ow has been enabled, the
System Status Flow light will light Green indicating a normal ow.
A detailed description of what happens in the case of an overow or
underow is discussed in the controller Diagnostics and Troubleshooting
section under System Status Dashboard, Flow. It is very important to read
and understand this description before ow monitoring occurs.
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