26 • Maintenance
Model GP-01 Operator’s Manual
Replacing or Charging the Batteries
WARNING: To prevent ignition of a hazardous atmosphere, batteries
must only be changed or charged in an area known to be
nonhazardous.
Replace or charge the batteries when the battery icon
indicates that the unit is in low battery warning. When in low
battery warning, only one battery level indication bar is
displayed in the battery icon on the LCD, and this icon will
be flashing.
• “FAIL” displays
during span
adjustment.
• The calibration
value may not
match the
cylinder gas
concentration.
• The sample
gas is not
reaching the
sensor
because of a
bad
connection.
• The calibration
cylinder may
be out of gas
or is outdated.
• The sensor
may need
replacement.
1. Check all calibration tubing
for leaks or for any bad
connections.
2. Make sure the Model GP-
01 has been properly set
up for calibration.
3. Verify that the calibration
cylinder contains an
adequate supply of fresh
test sample.
4. If the fail condition
continues, replace the
sensor.
5. If the difficulties continue,
contact RKI Instruments,
Inc. for further instruction.
• “FAIL SYS” is
displays on the
LCD
• A microproces-
sor failure has
occurred.
1. Turn off the unit and turn it
on again.
2. If difficulties continue,
contact RKI Instruments,
Inc.
Table 6: Troubleshooting the Model GP-01
Symptoms
Probable
Causes
Recommended Action
