Autool LM120 Plus User Manual - Page 10

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Autool LM120 Plus User Manual
E. Connect the instrument to the refrigeration system according to the chart
below. (pay attention to the direction of the refrigerant flowing!!!!! )
(Connected clamp-on temperature probes will not affect the operation..)
returns to zero.
F. Turn on the blue valve and red valve, and start the vacuum pump.
G. After the vacuum operation is completed, turn off the blue valve and red
valve, then shut the vacuum pump.
H. At this time, pressure leak test mode can be used to check leakage in
the system ( Please refer to 6-3. Pressure Leak Test).
6-3. Pressure Leak Test
A. The instrument is power on with the blue and red valves turned off.
B. Press the Function button to pressure leak test mode shown as below.
The current pressure value is displayed at lower right corner of LCD.
C. Press the Run/Stop button to start the leak test, as shown below:
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