37 • Maintenance
Model GX-2001 Operator’s Manual
Replacing a Sensor
WARNING: Replace the sensors in a non-hazardous environment.
1. Verify that the Model GX-2001 is off.
2. Unscrew the two screws that secure the sensor retainer (with the
sensor cover retainer still attached) to the Model GX-2001 enough to
remove the sensor retainer with the screws still in place.
3. Remove the sensor from its socket.
4. Carefully insert the replacement sensor in the socket.
CAUTION: When replacing a 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. The combustible gas
sensor has two non-polarized contacts which must line up with
the contacts in the socket. Forcing a sensor into its socket may
damage the sensor or the socket.
02
HC
RKI
M O D E
D ISP
AI R
GX-2001
0
2
H2S
CO
PO W ER
CO
H
2
S
Figure 10: Removing the Sensor Retainer to Replace a Sensor
