Operating Procedure - CLAS AC 7495 Mode D'emploi

AC 7495
UNIVERSAL ELECTRONIC LEAK DETECTOR R134/1234YF/HYDROGEN
Resetting the unit with no refrigerant present (fresh air) causes any level above zero to be detected.
• After the unit is warmed up, the default sensitivity level is set at "High" and Auto Reset function is "ON"
• Auto Reset function is best used initially when user is moving around trying to identify leakage source.
Once the leak source is determined, cancel the Auto Detect function to proceed with leakage measurement.
• Auto Reset function should be turned OFF when use in fixed position leakage detection.
Feature Sensitivity Adjustment
The AC 7495 provides three levels of sensitivity. When the unit is switched on, it is set to the high sensitivity
level.
• To change the sensitivity press the Sensivity Lo key. When the key is pressed, the visual display will
momentarily show the two left LED's (green) indicating Low Sensitivity level is selected.
• To switch back to High Sensitivity, press the Sensitivity Hi key. The two right LED's (red) will light momentarily
indicating high Sensitivity level is selected.

OPERATING PROCEDURE

WARNING : Do not operate this instrument in the presence of gasoline, natural gas, propane, or in other
combustible atmospheres
• How to find leaks ?
NOTE: A sudden whipping of the leak detector probe or "blowing" into the sensor tip will affect the air ftow
over the sensor and cause the instrument to alarm.
1. Power-Up key:
The Power ON/OFF key turns the instrument ON or OFF function. Press it once to turn on the Refrigerant
leak detector, the display will illuminate with flash, for 45 seconds to heat up the sensor. Press and hold this
button for 5 second to turn OFF the power.