RKI Instruments GasWatch 2 Manual - Manual (Page 33)

GasWatch 2 Operator’s Manual Maintenance • 28
Figure 8: Replacing the Sensor
5. Carefully insert the replacement sensor in the socket. Make sure the
sensor face with the colored ring is facing up.
CAUTION: When replacing the sensor, verify that the sensor is properly
aligned with its socket before inserting it into the socket. The
CO and H2S sensors have alignment slots which match up
with alignment tabs in the sockets. Forcing a sensor into its
socket may damage the sensor or the socket.
6. Reinstall the sensor gasket with the sensor cover over the sensor.
7. Reinstall the sensor cap.
8. Calibrate the new sensor as described in the calibration section of this
manual.
Replacing the Sensor Cover
WARNING: Replace the sensor cover in a non-hazardous
environment.
1. Verify that the GasWatch 2 is off.
2. With a flat blade screw driver, gently pry off the sensor cap. It snaps
onto the top case with two tabs.
3. Remove the old sensor cover from its recess in the sensor gasket.
4. Install the new sensor cover into the recess in the sensor gasket.
5. Reinstall the sensor cap.
Note: Oxygen sensor is not keyed.
Unit shown w/out wristband.
Align slots in CO
and H2S sensor
with tabs in case.
POWER
MODE
AIR
RKI
Tab
Tab