RKI Instruments Pioneer 4W - Manual (Page 121)

CO Transmitter • 18 Pioneer Operator’s Manual
Slow or no response/difficult or unable to calibrate
Symptoms
• The transmitter responds slowly or does not respond during the monthly response
test.
• Unable to accurately set the zero or response reading during the calibration
procedure.
• The transmitter requires frequent calibration.
NOTE: Under “normal” circumstances, the transmitter requires calibration once every
three months. Some applications may require a more frequent calibration
schedule.
Probable causes
• The calibration cylinder is low, out-dated, or defective.
• The transmitter is malfunctioning.
Recommended action
1. Verify that the calibration cylinder contains an adequate supply of a fresh test sample.
2. If the calibration/response difficulties continue, replace the sensor as described later
in this section.
3. If the calibration/response difficulties continue, contact RKI Instruments, Inc., for
further instruction.
No display reading
Symptoms
• The transmitter is installed, but the display screen is blank for that channel.
NOTE: If the display screen is blank for all channels, see the troubleshooting guide in
Chapter 5, Maintenance.
Probable causes
• The channel status setting is set at NO SENSOR/AMP.
Recommended action
1. Enter the Channel Setup program, and change the channel status setting to ACTIVE/
ONLINE
or SILENCED/OFFLINE.
2. If the display reading difficulties continue, contact RKI Instruments, Inc., for further
instruction.
Replacing Components of the CO Transmitter
This section includes procedure to replace the CO sensor, amplifier, filter, and sensor
backup battery. A procedure to replace the entire detector assembly is at the end of this
section. In most cases, it is not necessary to replace the entire detector assembly.