Vacuum Operation - Autool Lm150 Benutzerhandbuch

Vacuum
operation
●
The instrument can calculate the SH - Superheat and SC -
Subcooling as shown below as long as the tested refrigerant is
preset and clamp-on temperature probes are connected well
°C/°F conversion by pressing MODE button.
●
Turn off the blue valve and red valve.
Power on the instrument. Then make sure if the LCD displays
●
vacuum test status as below picture. If not, press the Mode
button to switch it.
●
Press the unit button to adjust the reading unit.
● When the instrument is turned on, there may be 10 digits in the
high and low pressure display area. At this time, press the zero
button long until it returns to zero.
● Connect the instrument to the refrigeration system according
to the chart below. (pay attention to the direction of the refriger-
ant flowing!!!!! ) (Connected clamp-on temperature probes will
not affect the operation.)
R
T1 Sensor
°C
Ev
°C
kPa
R
T1 Sensor
°C
SH
°C
kPa
%
14
T2 Sensor
°C
Co
°C
kPa
T2 Sensor
°C
SC
°C
kPa
kPa