GasWatch 3 for CO and O
2
Chapter 6: Maintenance • 73
Chapter 6: Maintenance
Overview
This chapter describes troubleshooting procedures for the GasWatch 3. It also includes
procedures for replacing the battery and replacing various consumable parts.
WARNING:
RKI Instruments recommends that service, calibration, and repair of RKI
gas detectors be performed by personnel properly trained for this work.
Replacing the sensor and other parts with original equipment does not
affect the intrinsic safety of the instrument.
AVERTISSEMENT:RKI Instruments recommande que le service, l'étalonnage et la
réparation des détecteurs de gaz RKI soient effectués par du personnel
dûment formé à ces travaux. Le remplacement du capteur et d'autres pièces
par l'équipement d'origine n'affecte pas la sécurité intrinsèque de
l'instrument.
Troubleshooting
The troubleshooting table describes error messages, symptoms, probable causes, and
recommended action for problems you may encounter with the GasWatch 3.
Table 9: Troubleshooting the GasWatch 3
Symptoms
Probable Causes
Recommended Action
• The LCD is blank.
• The unit got turned off.
• The battery is inserted
backwards.
• The battery needs to be
replaced.
• The battery cover may not be
completely closed.
1. To turn on the unit, press and briefly
hold POWER/MODE.
2. Reinstall the battery in the correct
orientation.
3. Replace the battery.
4. Be sure the battery cover is completely
closed and that the screw is tight.
5. If the difficulties continue, contact RKI
Instruments, Inc. for further instruction.
• The LCD shows an
abnormally high
reading but other gas
detection instruments
do not.
• Charcoal filter needs to be
replaced.
• The GasWatch 3 needs to be
recalibrated.
• The sensor needs replacement.
1. Replace the charcoal filter.
2. Recalibrate the unit.
3. If the difficulties continue, replace the
sensor and calibrate.
4. If the difficulties continue, contact RKI
Instruments, Inc. for further instruction.
