TESTO 550s - Page 51

9 Smart App
51
Before each measurement, check that the refrigerant hoses are in
flawless condition.
Before each measurement, zero the pressure sensors. All connections
must be pressureless (ambient pressure). Press the button [▲] (P=O)
for 2 seconds to zero the sensors.
1
Click on Measure.
2
Click on AC + Refrigeration.

The Refrigeration measurement menu opens.
3
Click on .

Configuration menu opens.
4
Make the required settings.
5
Click on Apply Configuration.