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Trained
Service
[::3If motor is not permanently lubricated, oil motor
with a few drops of SAE 20 nondetergent oil at
each oil hole. DO NOT over oil motor. Exces-
sive oiling can cause motor failure.
[::3 Check motor current. The amp draw should
not exceed the nameplate rating by more than
10%.
[::3 Check all wiring for secure connections or in-
sulation breaks.
[::3 Check the pump pressure and cutoff function.
[::3 Check primary control safety lockout timing.
[::3 Check ignition system for proper operation.
[::3Inspect the vent system and chimney for soot
accumulation or other restriction.
[::3 Clean the appliance
thoroughly
according to
the manufacturer's
recommendations.
[::3 Check the burner performance.
Refer to the
section "Set combustion with test instruments".
[::3It is good practice to make a record of the ser-
vice performed and the combustion
test re-
sults.
,
Removing
Nozzle Line for Service
Correct Nozzle and Flow
Rate Required
Incorrect
nozzles
and flow rates
could
result
in impaired
cornbus=
tion, under-firing,
over-firing,
soot=
ing, puff-back
of hot gases, smoke
and potential
fire or asphyxiation
hazards.
Use only nozzles having the brand, flow rate (gph), spray
angle and pattern specified by the appliance manufactur-
er or Beckett Residential Burner OEM Spec Guide, Part
#6711.
Follow the appliance manufacturer's
specifications for the
required pump outlet pressure for the nozzle, since this
affects the flow rate.
•
Nozzle manufacturers
calibrate nozzle flow rates
at 100 psig.
•
This burner utilizes pressures
higher than 100
psig, so the actual nozzle flow rate will be greater
than the gph stamped on the nozzle body. (Exam-
ple:A 1.00 gph nozzle @ 140 psig = 1.18 gph)
For typical nozzle flow rates at various pressures see ac-
companying chart.
1. Turn off power to burner before proceeding.
2. Disconnect copper oil connector tube from noz-
zle line.
3. Loosen the screw that fastens the rear access
door.
4. Remove splined nut.
Technician's
Regular
Maintenance
.
Remove the nozzle line assembly from the burn-
er, being careful not to damage the electrodes or
insulators while handling. Stop halfway to remove
igniter/transformer
wires.
.
To replace
the nozzle assembly,
reverse the
above steps. "HLX" head air tubes - Be sure stop
screw is fastened securely. Seat stop screw on
back of choke ring to set the position of the head.
"FBX" head air tubes - Use T gauge to set the "Z"
dimension to 1-1/8" +/- 1/32"
Nozzle
Installation
Perform the following steps when replacing a noz-
zle.
.
.
.
.
Remove the nozzle line assembly to gain access
to the nozzle.
Use a 3/4" open-end wrench to hold the nozzle
adapter. DO NOT attempt to remove or replace
the nozzle without securing the adapter, as noz-
zle alignment could be seriously affected.
Do not squeeze the electrodes when handling
the nozzle line assembly. Excessive force could
change the electrode tip settings or damage the
ceramic electrode insulators.
Use a 5/8" open-end wrench to carefully remove
the existing nozzle.
Nozzle
Flow Rate by Size
Nozzle flow rate U. S. gallons
per hour of No. 2 fuel oil when
pump pressure
(psig) is:
Nozzle
125
140 psi
150
size
psi
(factory
psi
(rated
std.)
at 100
psig)
0.40
0.45
0.47
0.49
0.50
0.56
0.59
0.61
0.60
0.67
0.71
0.74
0.65
0.73
0.77
0.80
0.75
0.84
0.89
0.92
0.85
0.95
1.01
1.04
0.90
1.01
1.07
1.10
1.00
1.12
1.18
1.23
1.10
1.23
1.30
1.35
1.20
1.34
1.42
1.47
1.25
1.39
1.48
1.53
1.35
1.51
175
200
psi
psi
0.53
0.56
0.66
0.71
0.79
0.85
0.86
0.92
0.99
1.06
1.13
1.20
1.19
1.27
1.32
1.41
1.46
1.56
1.59
1.70
RWB 6104 BAFII R01
Page 11
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