74 • Chapter 6: Maintenance
GasWatch 3 for CO and O
2
Replacing the Battery
WARNING:
To prevent ignition of a hazardous atmosphere, battery must only be
changed in an area known to be nonhazardous.
AVERTISSEMENT:Pour éviter l'inflammation d'une atmosphère dangereuse, la batterie
ne doit être remplacée que dans une zone non dangereuse.
Replace the battery when the battery icon flashes and its lowest battery level indication bar
disappears.
1. Make sure the GasWatch 3 is off.
2. For alligator clip versions, pry the base clip off so that it swings away from the instrument.
• Calibration fails.
• The calibration value does not
match the cylinder gas
concentration.
• The sample gas is not reaching
the sensor because of a bad
connection.
• The calibration cylinder is out
of gas or is outdated.
• The sensor needs replacement.
1. Make sure the GasWatch 3 has been
properly set up for calibration.
2. Check all calibration tubing for leaks or
for any bad connections.
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.
• Heart symbol at the
top of the screen
becomes steadily on or
disappears.
• A microprocessor error has
occurred.
• Contact RKI Instruments, Inc. for further
instruction.
Table 9: Troubleshooting the GasWatch 3
Symptoms
Probable Causes
Recommended Action
Figure 8: Releasing the Alligator Clip
Base Clip Unlocked
Base Clip Locked
