Fluid Circulation Pump
©Aqua-Hot®
250-D03 Diesel Series Service Manual
REV 220302
p. 60
Burner Components
Replacement Procedure:
1. Using a 10mm socket, loosen and remove the retaining
clamp bolt and the retaining clamp.
2. Slide the electrode out of the photo disc.
3. To remove the electrode, hold onto the orange electrode
boot, and pull firmly on the electrode.
4. Once the electrode has been removed Inspect inside the
orange electrode boot for the retaining clip, which holds
the electrode in place. If it is missing, replace the electrode
boot.
5. Insert the new electrode into the orange electrode boot,
and snap into place. Pull firmly on the electrode to make
sure the retaining clip has secured the electrode in place.
6. Slide the electrode into the photo disc.
7.
Install retaining clamp and retaining clamp bolt and finger
tighten.
8. Follow the ignition electrode adjustment procedure to
properly adjust the electrodes.
Figure 99
Ignition Cables
Electrical Insulators
Electrode Boots
Ignition Electrodes
Photo Disc
NOTE:
Be sure not to over-tighten the retaining clamp bolt
when readjusting the ignition electrodes. Over-tightening
the retaining clamp bolt will bend the retaining clamp and
prevent the photo disc from floating freely. Not allowing the
photo disc to float freely will cause poor combustion and
result in a smoky exhaust. A bent retaining clamp can be
re-straightened with a punch and hammer. Lay the clamp’s
beveled side down on a solid flat surface and align the thick
end of the punch at dead center. Tap the punch lightly until
the retaining clamp returns to proper form.
