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If you want to run the HR3 more or less continuously you could try to do the following.
Increase Sample Time Period and Spacing. (Now it checks pressure increase every 10 minutes, if you set it to an hour, it will only check every hour)
Decrease Max Pressure Rise (Minimum pressure rise detected in buffer tank to keep the HR3 operational, if it's set lower it's more likely that it will keep running 24/7)
Ishara changed both the Sample time period (minutes), and Sample Spacing (minutes) to 15 minutes.