Watts AERCO Benchmark BMK750 Operation And Service Manual page 137

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 8 – MAINTENANCE
Rear Refractory Replacement Instructions
O SENSOR COVER
2
LOCATION
(cover removed)
SPRING LATCH
AIR EDUCTOR
RIGHT REAR PANEL
SPRING LATCH
LEFT REAR PANEL
Figure 8-8: Rear View Showing Rear Panel Nut & Latch Locations
12. Refer to Figure 8-10 and note the position of the rear refractory. Prior to refractory removal.
Mark it as necessary using a permanent marker or tape.
THERMAL SWITCH
REAR BURNER PLATE
GAS SUCTION LINE
FROM EXHAUST
MANIFOLD
Figure 8-9: Partial Rear View Showing Rear Burner Plate
13. Gently pull on the two opposing metal tabs located on the outer edge of the fiber blanket,
then alternately pull on the other two opposing tabs. Continue this process until the fiber
refractory package can be removed from the combustion chamber. Be careful not to drop or
damage the refractory.
14. Place the fiber insulation package, metal face down, in a safe location to avoid damage.
OMM-0145_A99 • GF-218 • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
9/18/2019
Access the rear panel nuts
(behind arrows) are on the
rail & base inside the unit,
accessible after removing
the side panel on each
side.
O SENSOR
2
AIR EDUCTOR
ASSEMBLY
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