Beckett FII 85 - Manual (Page 12)

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