750-392
CBEX-DE
3-21
Oil Drawer Switch
Check the setting of the ignition electrode(s) for proper gap
and position. Be sure that the porcelain insulator is not
cracked and that ignition cable connections are tight.
The oil nozzle tip should be seated tightly in the body with the
swirler and the seating spring in place.
Check to see that the flame detector sight tube and the gas
pilot tube extend through their respective openings in the dif-
fuser face.
3.14 — Oil Drawer Switch
The integral contacts of the control are closed by proper posi-
tioning and latching of the oil nozzle lance in its forward posi-
tion. Adjustment of the switch must be such that its contacts
open if the oil nozzle lance is not properly positioned for oil fir-
ing. The switch is electrically removed from the circuit when a
combination fuel burner is fired on gas (fuel selector switch is
in GAS position).
FIGURE 3-8. Gas Pilot Electrode
GAS PILOT
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