HRX-OM-X037
Chapter 5 Display and Setting of Various Functions
5.4 Description of the Screen
HRL Series
・Discharge pressure alarm (AL21/AL23/AL24/AL26)
5. An alarm can be activated when the circulating fluid discharge pressure rises/drops outside
the setting range.
This function is set to “[ ] (stop) at the time of alarm” by default.
The following two alarms can be set on “Discharge pressure alarm setting” screen:
• AL23: Alarm for CH2 circulating fluid discharge pressure rise––the alarm activates if the
pressure rises above the set pressure.
• AL24: Alarm for CH2 circulating fluid discharge pressure drop––the alarm activates if the
pressure drops below the set pressure.
Following settings can also be selected.
• Selection of product operation when an alarm occurs
“AL21: CH2 failure in circulating fluid discharge pressure sensor” is activated if a failure is
detected in the circulating fluid discharge pressure sensor. The product operation at the
time of alarm “AL21” can be selected.
This function is set to “[ ] (stop) at the time of alarm” by default.
If the operation at the time of the alarm “AL21” is set to be [ ] (disabled) or
[ ](operation continues at the time of alarm), the pump operation mode switches to the
“pump output setting modeˮ (45% output) to continue operation when a failure is detected in the
circulating fluid discharge pressure sensor.
Alarm “AL26: CH2 failure of circulating fluid flow sensor” is activated if failure is detected in
the circulating fluid flow sensor. The product operation at the time of alarm “AL26” can be
selected.
This function is set to “Operation stops at time of alarm” by default.
If the operation at the time of the alarm “AL26” is set to be [ ] (disabled) or
[ ](operation continues at the time of alarm), the pump operation mode switches to
“Pump output setting mode” (45% output) to continue operation when a failure is detected in
circulating fluid discharge pressure flow sensor.
Discharge pressure alarm (AL21/AL23/AL24/AL26)
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