Siemens 7MB2335, Operating Instructions Manual, Page: 105 / 168

Maintenance
6-7
Operating instructions ULTRAMAT 23 gas analyzer
C79000-B5276-C216-03
6.2.1 Replacement of O
2
Sensor
!
Warning
Danger of burns
The O
2
sensor contains acetic acid which can burn unprotected skin.
The sensor housing must not be damaged when the sensor is re•
placed.
If you nevertheless come into contact with the acid, immediately rinse
affected skin with plenteous amounts of water.
Please also note that old or faulty O
2
sensors are toxic waste and
must be packed and disposed of accordingly!
S
Unscrew the two screws of the front cover and remove the cover.
S
Unlock the plug of the sensor connection, and remove.
S
Unscrew the O
2
sensor.
S
Remove the gasket of the O
2
sensor.
The exhausted O
2
sensor must be disposed of as electronic waste with
the code number 160215 ” Dangerous component removed from used
equipment ”. It must therefore be disposed of in a correct and
environmentally safe manner.
S
Insert the new gasket.
S
Screw in the new O
2
sensor and tighten hand-tight.
S
Reconnect the plug.
S
Enter the date of installation in the menu item ”O
2
cal. after install”
as described in Section 5.8.2.1.
S
Calibrate the O
2
zero as described in Section 5.8.2.2.
Removal
Disposal of the
O
2
sensor
Installation