RKI Instruments GD-K77D - Manual (Page 15)

Model GD-K77D Operator’s Manual Installation • 10
Sensor. Use caution when handling the sensor. The electrolyte contains a dilute acid that
can damage to clothing or other materials, and it can cause skin burns or blindness should
the acid come in contact with the eyes. If the electrolyte makes contact with the skin or
eyes, wash the affected area very thoroughly with water. With eye contact, seek medical
attention immediately.
High Gas Levels. Should the target gas reach levels greater than the alarm present level,
swift and appropriate action is crucial to avoid a potentially hazardous condition.
Communication Devices. Do not use portable telephones or two-way radios near the
Model GD-K77D. The electrical emissions or radio waves of such devices may affect the
Model GD-K77D’s readings.
Power On. When turning the power back on to the Model GD-K77D, wait 25 seconds
before taking readings; otherwise abnormal output may result.
Flowmeter. When the Model GD-K77D is drawing in the sample gas, make sure the flow
ball is between the top and bottom flow lines. When the ball drops below the bottom flow
line, the Model GD-K77D cannot accurately detect the target gas. Increase the flow rate.
Dust Filter. When sampling gas from a dusty environment, use the recommend filter to
avoid drawing dust into the Model GD-K77D. Place the external dust filter on the end of
the hose used to draw in the sample gas. When changing the dust filter, turn off the Model
GD-K77D.
Installation
Precautions
Professional installation of the Model GD-K77D by a licensed contractor is highly
recommend for the best and safest results. The following is a list of precautions that will
ensure the operating performance of the Model GD-K77D:
• Dusty Environments. When extracting gas from a dusty environment, the
recommend filter should be used to avoid drawing dust into the Model GD-K77D.
Place the external dust filter on the end of the hose used to draw in the sample gas.
When changing the dust filter, turn off the Model GD-K77D.
• Sun Light. Do not install the Model GD-K77D in direct sun light, which may affect the
operation and performance of the Model GD-K77D.
• Vibration. Do not install the Model GD-K77D in areas affected by shock and vibration,
which may damage the Model GD-K77D’s electronics.
• Electronic Emissions. Do not install the Model GD-K77D in areas with high levels of
radio interference or electronic noise. This electronic interference may cause
abnormal readings. And do not place the Model GD-K77D near electrical wiring or
other electrical devices, such as industrial motors.
• Target Gas. Do not place the Model GD-K77D where the target gas is to be detected.
Use the sampling hose to place the Model GD-K77D at a safe distance from the gas
source.
• Dangerous or Inconvenient Locations. The Model GD-K77D requires regular
maintenance. Do not place it in environments that are potentially hazardous (e.g.,
near high voltage cables), or in locations in which maintenance is very inconvenient
(e.g., near objects that prevent easy access to the controls inside the Model GD-
K77D).