Others
• After a gas continuously comes into contact or a highly-concentrated gas comes into contact,
the detector may stay in alarm. In such a case, draw fresh air for more than five minutes
(recommended) and perform air calibration again.
• Pressing buttons unnecessarily may change the settings, preventing alarms from activating
correctly. Operate the detector using only the procedures described in this operating manual.
• Do not drop or give shock to the detector. The accuracy of the detector may be deteriorated.
• Do not jab the buzzer opening with a sharp-pointed item. Doing so may cause a failure or
damage.
• Do not remove the panel sheet on the display. The water-proof and dust-proof performances
will be deteriorated.
• Do not affix a label or the like on the infrared port. Infrared communications can no longer be
conducted.
• The operating environment may include gases that have harmful effects on the sensor of the
detector. The detector cannot be used in the presence of the following gases:
(1) High-concentration sulfides (such as H2S, SO2, etc.)(2) Halogen gases (such as chloride
compounds, etc.)(3) Silicone (Si compounds)(4) High-concentration solvent gasesDo not use
the detector in the presence of the above (1), (2), and (3) gases (such as high-concentration
sulfides, halogen gases, silicone, etc.), which may shorten the sensor life significantly or cause
malfunctions such as inaccurate readings.
In case the detector is used for detection in the presence of silicone, etc., be sure to check the
gas sensitivities before using it again.
If the above (4) gas (high-concentration solvent gas) is exposed, a crack may occur in the unit.
Thus, do not use high-concentration solvent gases.
About battery replacement
• Never fail to turn off the power of the detector before replacing the batteries.
• Replace both of the two batteries with new ones at one time.
• Pay attention to the polarities of the batteries.
Usage
• In a low-temperature environment, the operating time is shortened due to the battery
performance property.
• At low temperatures, the responses of the LCD display may slow down.
• Perform air calibration under pressure and temperature/humidity conditions close to those in
the operating environment and in fresh air.
• Perform air calibration after the reading is stabilized.
• If there is a sudden temperature change of 15ºC or more between the storage and operational
locations, turn on the power of the detector, let it stand for more than 5 minutes in a similar
environment to the operational location, and perform air calibration in fresh air before using it.
• When cleaning the detector, do not splash water over it or use organic solvents such as alcohol
and benzine on it. The surface of the detector may be discolored or damaged.
• If the detector is not used for a long time, turn on the power at least once every six months and
check that the pump draws in air (about three minutes). The detector, when not activated for a
long time, may cease to work because of hardening of the grease in the pump motor.
• If the detector is not used for a long time, store it after removing the batteries. Battery leaks
may result in fire, injury, etc.
• When the detector is used again after a long-period storage, never fail to perform air
calibration. For information on readjustment including air calibration, please contact RKI.
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