GX-3R Operator’s Manual Chapter 6: Maintenance • 79
Chapter 6: Maintenance
Overview
This chapter describes troubleshooting procedures for the GX-3R. It also includes procedures
for instrument cleaning, recharging the batteries, and replacing various consumable parts.
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 action for problems you may encounter with the GX-3R.
Table 10: Troubleshooting the GX-3R
Symptoms Probable Causes Recommended Action
• The LCD is blank. • The unit may have been turned
off.
• The batteries may need to be
recharged.
1. To turn on the unit, press and briefly
hold POWER MODE.
2. If the unit does not turn on, recharge the
batteries.
3. If the difficulties continue, contact RKI
Instruments, Inc. for further instruction.
• The LCD shows
abnormally high or
low readings but other
gas detection
instruments do not.
• The filters may need to be
replaced.
• The GX-3R may need to be
recalibrated.
• The sensor for the affected
channel(s) may need
replacement.
1. Replace the filters.
2. Recalibrate the unit.
3. If the difficulties continue, replace the
sensor for the affected channel(s) and
calibrate the affected channel(s).
4. If the difficulties continue, contact RKI
Instruments, Inc. for further instruction.