Benchmark 5000-6000 Operation & Maintenance Manual
SECTION 4
– MAINTENANCE
OMM-0118_B
•
GF-203
•
5/9/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 42 of 148
O
2
Sensor Maintenance Instructions
4. Next, loosen and remove the O
2
sensor and crush washer from the back plate using a
15/16" open-end wrench.
5. Thoroughly inspect the O2 sensor. If corroded, the sensor should be replaced. Ensure that
the hole in the refractory is clean and that the gas sample suction tube is not clogged.
6. Reinstall the O2 sensor and crush washer on the back plate.
7. Reconnect the sensor lead wire.
8. Continue by completing the instructions in the next section to maintain the Air Eductor
assembly.
Figure 4-2: O
2
Sensor Mounting Location
–
Back Panel Semi-Transparent
O
2
SENSOR
(P/N
61026
)
GAS LINE TO
EXHAUST
MANIFOLD
AIR EDUCTOR
ASSY.
For AERtrim
(P/N
24508-TAB
)
O
2
SENSOR
COVER
(Removed from
original position)