MULTI GAS LEAK DETECTOR
ME-LOKATOR VL30 – REFRIGERANT GASES
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LOKATOR VL 30 EN
5.3
LEAK REASEARCH & DETECTION
5.3.1
LEAK RESEARCH PROCEDURE
• The response time for detection is approx. 1 second.
The response time depends on the length of the sniffing tube used.
• To obtain a quick response and an efficient detection, the sniffing tube must be brought as close as possible to
the place being tested. (A few millimeters)
• Avoid holding the sniffing tube on the leakage point excessively, as detector sensor fatigue will result.
• Always work by successive contacts, pulling back the tube from the leak point when a detection.
STEP 1 >
When the warm-up period over, the red light goes out and the “0” green light of the light ramp is ON
indicating that the unit is ready for detection.
STEP 2 >
• Check leak potential points.
• Always work by successive contacts, pulling back the tube from the leak point when a detection.
STEP 3 >
• On pulling back the detection pipe from the leakage point, the YELLOW
“DEGASSING” light on. The GREEN “0” light will light ON during the degassing time of the sensor.
It is imperative to wait for the YELLOW "DEGASSING" light to go out before continuing the detection.
• The sniffing tube is semi-rigid and can take up the shape required by the user. However, avoid bending the tube into
excessively sharp angles.
5.3.2
ZEROTTING STABILITY
• With a new Sensor the manipulation of the Detection Probe can cause the zero to be unstable, especially in high
sensitivity positions. This instability will normally disappear after a few uses.
• Avoid manipulating the Detection Probe roughly and knocking it against the object being tested.
• Atmospheric contamination (Gases, Refrigerant gases or Solvents) at an excessive level can also cause zero instability
and lead to false readings.
• Atmospheric contamination at an excessive level cannot be compensated for by the auto-zero and will produce a
permanently illuminated display (especially when using the positions of high sensitivity).
5.3.3
« SATURATION - CONTAMINATION » CONTROLE
The YELLOW "x10" "CONTAMINATION" light at the right end of the light ramp is normally off. This light comes on for two
reasons:
• The saturation of the Sensor when detecting a very big leak.
In that case it is necessary to wait for the light to be fully OFF before continuing the detection.
• A very high atmospheric contamination can makes difficult or impossible an efficient tightness control and will cause
a premature wear of the Sensor. In such a case, it is essential to reduce the atmospheric contamination level by
ventilation of the premises, and to stop all sources of contamination before continuing the detection.
