Black & Decker MULTI-GAS DETECTORS Manuel d'utilisateur Page 14

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GasAlertMax
User Manual
4
a
Cautions
BW recommends to “bump test” the sensors before each day’s use, to confirm their ability to respond to gas by exposing the
detector to a gas concentration that exceeds the alarm setpoints. Manually verify that the audible and visual alarms are activated.
Calibrate if the readings are not within the specified limits.
Make sure the pump filter is not blocked.
The LEL sensor is factory calibrated to methane. If monitoring a different combustible gas, calibrate the sensor using the
appropriate gas.
High off-scale % LEL readings may indicate an explosive concentration.
Protect the LEL sensor from exposure to lead compounds, silicones, and chlorinated hydrocarbons. Although certain organic
vapors (such as, leaded gasoline and halogenated hydrocarbons) may temporarily inhibit sensor performance, in most cases,
the sensor will recover after calibration.
Any rapid up-scaling reading followed by a declining or erratic reading may indicate a gas concentration beyond upper scale
limit, which may be hazardous.
Use only Black & Decker VersaPak™ battery. Ensure it is properly charged and installed in the detector case. (See the section,
Replacement Parts and Accessories.)
Only charge batteries using VersaPak™ charger. Do not use any other charger. Failure to observe this precaution could lead to
fire or explosion.
Do not change or charge batteries in a hazardous location. Doing so will impair the Intrinsic Safety of the unit, and may lead to
fire or explosion.
Read and observe all instructions and precautions in the literature provided with the charger. Failure to do so may result in fire,
electric shock, or other forms of personal injury or property damage.
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