Tecfluid CP CH420 Series, Инструкция по эксплуатации

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4.2 Serial number visualization
By pressing the three push buttons, the display will show the serial number.
In a CH420L, if during the programming sequence it receives a HART command that must
be attended, the local programming will not be valid and all the data previously programmed
will be lost. The screen will return to the normal working model and the word PROG will light
on the screen, indicating this event. To remove the word PROG from the display, press any
of the two PROG push buttons.
After that, the flow rate equivalent to 20 mA (upper range) can be programmed.
To return to the usual screen, press any of the push buttons.
4.3 Reset
By pushing the RESET push button, the counter will be set to zero and it will continue to
count .
5 MAINTENANCE
No special maintenance is required.