Flow Operation - Hunter X-Core Owners Manual And Programming Instructions

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 flash. 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 specified by the manufacturer of the flow sensor,
use the ▼ button to return to the main Sensor Configuration screen.
If an HFS sensor has been selected and programmed in the Sensor
Configuration screen, the main RUN screen will indicate a flashing flow rate
anytime a station is irrigating. If the station's flow has not been learned or the
station has not been enabled for flow monitoring, which will be discussed
in the Flow Operation and Manual Operation section, the screen will still
indicate a total flow of 0.0 GPM because the HFS has been selected.

flow Operation

The Flow Operation feature allows you to program flow monitoring
functions for each station. You can program the controller to either monitor
flow for a station or not monitor flow for a station.
Turn the dial to the adVanCed feaTures position. Use the ▲ and
1.
▼ to select flow Operation and use the + button to enter.
Use the ◄ and ► buttons to navigate to the station you would like
2.
to program.
3. The cursor will be displayed next to Monitored. Use the + / – button
to enable or disable flow monitoring for that station.
If flow monitoring is enabled (Yes), you will be given the ability to change
certain characteristics of each stations monitored flow. As soon as the
station is enabled the new screen will appear with the following selections:
• expected flow – the amount of flow expected for that station in
Gallons Per Minute (GPM )or Liters Per Minute (LPM)
• overflow – Can be set from 110% to 300% of Expected Flow. During
system operation, if the station flow exceeds the Overflow limit, the
controller will shut the system down and begin diagnostic testing. For
example, if the expected flow is 20 GPM and the overflow is set to
115%, the actual flow would need to exceed 15% (3 gallons) of the
expected flow. Therefore, the station would need to exceed 23 GPM
before the controller would go into overflow alarm.
• underflow – Can be set from 10% to 100% of Expected Flow. During
system operation, if the actual station flow falls below the Underflow
limit, the controller will shut the system down. For example, if the
expected flow is 20 GPM and the underflow is set to 50%, the actual
flow would need to underflow by 50% (10 gallons) of the expected
flow. Therefore, the station would need to flow at a minimum of 10
GPM before the controller would go into an underflow alarm.
• Start delay – Can be set from 5 seconds to 10 minutes. The Start
Delay prevents premature system shutdown due to erratic flow 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 Overflow and Underflow conditions.
After the station has been enabled, press the ▼ button to select any of
the features mentioned above. With the ► cursor pointing to the flow
characteristic, press the + / – button to increase or decrease the value until
the desired number is reached.
If flow monitoring is enabled for a specific station, the factory preset
values will be displayed. The expected flow 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. Overflow
will be 115%, underflow 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 flow monitoring setup. A flow sensor needs to be assigned
in the Sensor Configuration screen, and the stations set to be monitored
need their flows to be learned. These steps are required in order for flow
monitoring to occur.
If a station has been enabled for flow monitoring, it is important to know
that the System Status Dashboard flow light will become active for that
station. If the other components to complete the flow monitoring process
have not been programmed, but the station's flow has been enabled, the
System Status Flow light will light Green indicating a normal flow.
A detailed description of what happens in the case of an overflow or
underflow 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 flow monitoring occurs.
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