3.Connect instrument to refrigeration system. Then operate vacuum or fill some
refrigerant to system. Shut the valve and start test by pressing SETTING button
when reading keeps stable. See below figure with flashing delta signal.
4.At this time instrument records original pressure and test period. Press ARROW
button could switch display to see difference value of pressure , original pressure and
test time duration respectively.
5.Press SETTING button again to stop leak test.
6.4. Setting Operation
Types of refrigerant , pressure unit and temperature unit could be changed as follow
instructions.
1.Instrument is in any test function state.
2.Long press SETTING button to display below figure.
Test Time Duration
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