Watts Aerco Benchmark OMM-0117 Operation And Maintenance Manual page 42

Benchmark 5000-6000 Operation & Maintenance Manual
SECTION 4 – MAINTENANCE
O Sensor Maintenance Instructions
2
4. Next, loosen and remove the O
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.
O SENSOR
2
(P/N 61026)
GAS LINE TO
EXHAUST
MANIFOLD
Figure 4-2: O Sensor Mounting Location – Back Panel Semi-Transparent
2
OMM-0118_B • GF-203 • 5/9/2019
sensor and crush washer from the back plate using a
2
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
O SENSOR
2
COVER
(Removed from
original position)
AIR EDUCTOR
ASSY.
For AERtrim
(P/N 24508-TAB)
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