Benchmark Platinum-Edge [ii]: Operation-Service Manual
SECTION 8
– MAINTENANCE
OMM-0137_J
• 12/20/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
102
of
167
8.4 O
2
SENSOR
The Lean Oxygen Sensor (P/N
61026
) should be
cleaned
and
inspected
every 12 months. It is
not included in any of the 12- or 24-month maintenance kits.
On BMK750
– 5000N units, it is located on the burner plate at the top of the unit. It may be hot,
so allow the unit to cool sufficiently before removing or replacing the it.
Figure 8-3a: O
2
Sensor Mounting Location
–
BMK750
–
5000N (BMK750 shown)
On the BMK5000 & 6000, it is located on the
burner’s rear plate, on the rear of the unit.
REAR OF UNIT
Figure 8-3b: O
2
Sensor Mounting Location
–
BMK5000 & 6000
Lean O
2
Sensor Maintenance Instructions
1. Set the ON/OFF switch on the Edge Controller to the
OFF
position.
2. Remove the top shroud from the unit by grasping the top handle and lifting straight up. This
will disengage the shroud from the four (4) pins in the side panels.
3. Disconnect the O
2
sensor lead wire by pushing in on the release tab and pulling apart the
connector.
O
2
SENSOR
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)