Operation - FLOWTECH Flowpress Mini Single Operation And Maintenance Manual

7 OPERATION

7.11 Normal operation:
The 'Home' screen will display the status of the system pressure.
A green 'Power on' light will be displayed on the front of the Flowpress Mini.
During normal operation the Flowpress Mini will monitor the system pressure and repressurise the
system if the system pressure drops below the system pressure– differential pressure. See Fig. 18.
Example: System pressure 2 bar, differential pressure 0.5 bar, pump will start to re-pressurise system
at 1.5 bar system pressure and stop at a system pressure of 2 bar.
During the normal operation of a pressurised system, the system pressure will fluctuate due to
temperature changes causing expansion and contraction. When setting the differential pressure
for the Hi \ Lo alarms, please ensure that the normal system pressure fluctuations are below the Hi
pressure alarm setting and above the differential pressure. If this is not done the Flowpress Mini will
try
to compensate for the pressure change causing an over pressure within the system or alarms being
triggered.
7.12 Error and alarm display:
The following errors are shown on the display:
Hi Pressure monitored by the Flowpress Mini is above the Hi alarm set pressure.
Display will flash between Hi and system pressure and red error light will illuminate.
Pumps will not run in this condition.
Lo Pressure monitored by the Flowpress Mini is above the Lo alarm set pressure.
Display will flash between Lo and system pressure and red error light will
illuminate. Pumps will run in this condition.
Er The input signal from the pressure sensor is outside its normal range.
Display will flash Er and red error light will illuminate.