750-368
CBEX Elite 100-1200 HP
8-13
8.11 — Air Control Damper
Coils may be replaced without removing the valve from the line.
Check coil position and make sure that any insulating washers or retaining springs are reinstalled in proper order.
8.11 — Air Control Damper
The burner air control damper should be checked for free movement as a part of the monthly inspection. With
the burner off and the actuator removed, the air control damper should rotate freely through its entire range of
movement. Any resistance to movement or excessive play in the support bearing should be investigated and cor-
rected before the burner is put back in operation.
Ensure the gears are fully engaged throughout the entire damper rotational range.
FIGURE 8-11. Rotary Air Damper
Inspection of the air damper should be performed on a more frequent basis if the boiler is operating in a dirty
environment.
Combustion should be checked and readjusted as required whenever the burner is removed or any control linkage is
disturbed. Failure to follow these instructions could result in equipment damage.
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