63 • Maintenance
03 Series Operator’s Manual
Maintenance
This section describes troubleshooting procedures for the 03 Series. It also
describes how to change the 03 Series’ batteries, replace the sensor,
replace the sensor membrane, and replace the charcoal filter (CO-03 only).
WARNING: RKI Instruments, Inc. recommends that service,
calibration, and repair of RKI instruments be performed
by personnel properly trained for this work. Replacing
sensors and other parts with original equipment does not
affect the intrinsic safety of the instrument.
Troubleshooting
The troubleshooting table describes error messages, symptoms, probable
causes, and recommended actions for problems you may encounter with
the 03 Series.
Table 7: Troubleshooting the 03 Series
Symptoms
Probable Causes
Recommended Action
The LCD is blank.
• The unit may have
been turned off.
• The alkaline
batteries may need
to be replaced.
1. To turn on the unit, press
and hold the POWER
MODE button.
2. If the unit does not turn on,
replace the alkaline
batteries.
3. If the difficulties continue,
contact RKI Instruments,
Inc. for further instruction.
The LCD shows
abnormally high
readings but other
gas detection
instruments do not.
• The unit may need
to be recalibrated.
• The sensor may
need replacement.
1. Recalibrate the unit.
2. Replace the sensor and
calibrate the unit.
3. If the difficulties continue,
contact RKI Instruments for
further instruction.
No or low response
to a known
concentration of
gas.
• The unit may need
to be recalibrated.
• The sensor may
need replacement.
1. Recalibrate the unit.
2. Replace the sensor and
calibrate the unit.
3. If the difficulties continue,
contact RKI Instruments for
further instruction.
