100 • Chapter 6: Maintenance
GX-6000 Operator’s Manual
Chapter 6: Maintenance
Overview
This chapter describes troubleshooting procedures for the GX-6000. It also includes
procedures for replacing and 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-6000.
Table 13: Troubleshooting the GX-6000
Symptoms
Probable Causes
Recommended Action
• The LCD is blank.
• The unit may have been
turned off.
• The alkaline batteries may
need to be replaced or Li-ion
battery pack may need to be
recharged.
1. To turn on the unit, press and briefly
hold the POWER/ENTER button.
2. If the unit does not turn on, replace
the alkaline batteries or recharge the
Li-ion battery pack.
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 H
2
S scrubber disk or
charcoal filter may need to
be replaced.
• The GX-6000 may need to
be recalibrated.
• The sensor for the affected
channel(s) may need
replacement.
1. Replace the H
2
S scrubber disk or
charcoal filter.
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.
• The unit indicates
flow failure and does
not recover when
RESET is pressed
and released.
• The probe tube is clogged.
• The hydrophobic filter disk in
the probe is dirty.
• The sample hose has a kink
or obstruction.
• The pump is malfunctioning.
1. Inspect the probe tube for any
obstructions.
2. Inspect the hydrophobic filter disk in
the probe and replace if necessary.
3. Inspect the sample hose for kinks or
obstructions and replace if
necessary.
4. Attempt to set the low flow setpoint
as described in “Adjusting the Low
Flow Setpoint (FLOW ADJUST)” on
page 156.
5. If difficulties continue, contact RKI
Instruments, Inc. for further
instruction.