REFRIGERANT LEAK DETECTOR SEGO DTCTR
6.3. When an alarm is triggered, it may indicate that the leakage is close by. Detect around that area again and
see if the alarm is repeatable. If the leak is confirmed, pinpoint the leak source by moving slowly from no-leaking
(no-alarm) area to the leaking area from different directions. Besides, you could also pinpoint the leakage by
moving the detector away from the leaking area and reset the unit, adjusting the sensitivity lower and repeating
the above process. Once confirmed, mark around the leakage and continue detecting the whole line of the
system.
6.4. Additional work may be needed to eliminate possible ambiguity, such as, other contaminants at the spot
may also make the detector work abnormally. Please clean the leaking area with dry cloth and blow clean dry air
to the leaking area and repeat step 3 above to confirm the leak.
6.5. Leak on evaporator coil is more difficult to detect than other areas because it is difficult for sensor tip to
access to the whole evaporator coil. Most evaporator coils are composed of modules and are installed in a closed
space with fan for heat exchange.
The system with the fan should be turned on for 10 seconds and then turn off the fan, wait 10-15 minutes at
the evaporator, then use detector to detect the outlet of the condensate (make sure the sensor tip doesn't touch
with the condensate), or detect the air inside the evaporator chamber. Most halogens are lighter than the air and
likely to accumulate at the highest spot in the closed space. An alarm may indicate a leak at the evaporator coil,
but it is hard to repair evaporator by pinpointing the precise leak location. In most cases, the whole coil has to be
replaced.
7. Notes before leak age detection:
1). In order to detect leakage in a refrigeration system, the system must have normal operating pressure, or at
least partially reaches to minimum 50 PSI. Low environmental temperature (lower than 59º or 15 °C) may
lower the system required pressure and may make the leakage less likely to be detected. No leak detected
does not mean the system does not have gas leakage. Check the pressure before making the conclusion.
2). Leaking areas are usually covered with contaminants such as compressor oil or dirt, be careful not to make the
sensor tip contact with these contaminants.
3). The function of the detector is to detect refrigerant's relative change at the sensor tip.
Pinpointing the leakage source needs professionals to adjust sensitivity to proper level and reset the detector.
4). In areas where the atmosphere is contaminated with halogen refrigerant, press reset key to "ignore" the leak
age in the background. Make sure not to move the sensor tip away from the contaminated background while
resetting the detector.
5). In windy area, the leaking halogen refrigerant may be quickly diluted or removed from the leak age source.
The technician may use a wind shield to isolate the leak area or temporarily turn off the fan.
6). To avoid false alarm, prevent the sensor tip against any moisture or other solvent. Besides, the screw of the
sensor should be tightened up.
8. Maintenance
Proper maintenance is important and may extend the service life and improve the performance of your detector.
Warning: Turn the power off before clearing the shell of sensor.
Keep the sensor tip clean: Use cotton cloth or dry air to clean the shield on the sensor tip if it gets contaminated.
If the sensor tips itself is contaminated, soak the tip in absolute alcohol for a few minutes, and then use
compressed air to blow it dry, or dry it with cloth.
Note: Never use strong solvents such as Gasoline, mineral oil, turpentine, these solvents may coat the sensor with
a thin film and reduce the sensitivity of the detector and make the detector slow to respond to a leak.
Put the detector and the sensor in a dry and clean place; remove the batteries if the detector is not used for a
long time.
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