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Page 12 RWB 6104 BAFII R01
Inspect the nozzle adapter before installing the
new nozzle. If it is grooved or scratched on the
sealing surface, replace the nozzle line assem-
bly. If the surface is damaged, oil could leak at
the nozzle to adapter joint, causing serious com-
bustion problems.
Protect the nozzle orifi ce and strainer when in-
stalling. If the orifi ce gets dirt in it or is scratched,
the nozzle will not function properly.
To install a new nozzle, place a 3/4” open-end
wrench on the nozzle adapter. Insert the nozzle
into the adapter and secure fi nger tight. Finish
tightening with a 3/8” open-end wrench. Use care
to avoid bending the burner head support legs or
electrodes.
Do not over-torque the nozzle when install-
ing. This will cause deep grooves in the nozzle
adapter, preventing a seal when a new nozzle is
installed.
Carefully check and realign the electrode tips af-
ter replacing a nozzle, ensuring the electrode set-
tings comply with Figure 6a or 6b.
If the head was removed when replacing the
nozzle, carefully reconnect the head to the noz-
zle adapter. Push the head support until it stops
against the nozzle shoulder. Verify the dimen-
sion between the nozzle face and the back of the
head is 5/32”.
5.
6.
7.
8.
9.
10.
Check/Adjust Electrodes
Check the electrode tip settings, as shown in Figure
6a or 6b. If necessary, adjust by loosening the elec-
trode clamp screw and slide/rotate the electrodes
as necessary. When the adjustment is complete,
securely tighten the clamp screw.
•
Figure 5a. HLX Air Tube
Figure 5b. FBX Air Tube
SK9639
Trained Service Technician’s Regular Maintenance
SK9641
Blower Wheel Re-
placement
For installation or re-
placement of a blower
wheel, insure that there
is a space between the
blower wheel and the
motor face of 0.062”
(1/16” + 1/64”). Refer to
Figure 7.
•
Figure 6a. Electrode Settings-HLX Air Tube Com-
binations
1-1/2”
15/32”
3/32”
5/32”
1/4”
5/32”
Nozzle face to back of head
Stop
Screw
Do NOT overtighten
Clamp Screw
SK8263
Figure 6b. Electrode Settings-FBX Air Tube Com-
binations
SK9461
Figure 7. – Blower
Wheel Replacement
SK9190A