Beckett NX Manuel D’Utilisation

Page 12

 

RWB 6104 BNX R02

0.45

0.47

0.49

0.53

0.56

0.56

0.59

0.61

0.66

0.71

0.67

0.71

0.74

0.79

0.85

0.73

0.77

0.80

0.86

0.92

0.84

0.89

0.92

0.99

1.06

0.95

1.01

1.04

1.13

1.20

1.01

1.07

1.10

1.19

1.27

1.12

1.18

1.23

1.32

1.41

1.23

1.30

1.35

1.46

1.56

1.34

1.42

1.47

1.59

1.70

1.39

1.48

1.53

1.65

1.77

1.51

1.60

1.65

1.79

-

1.68

1.77

1.84

-

-

1.84

-

-

-

-

-

-

-

-

-

5/32” GAP

1/4” above 
nozzle center

3/32” Nozzle-to-tip 
Spacing

SK9664

Trained Service Technician’s Regular Maintenance

Use a 5/8” open-end wrench to carefully remove 
the existing nozzle.

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 5/8” 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 7.

If the head was removed when replacing the noz-
zle, carefully reconnect the head to the nozzle 
adapter. Make sure to align the key in the support 
leg with the keyway in the nozzle adapter and 
to butt the head support to the nozzle adapter 
shoulder, see Figure 8.

  Check the electrode tip settings, as shown in Fig-

ure 7. If necessary, adjust by loosening the elec-
trode clamp screw (Figure 8) and slide/rotate the 
electrodes as necessary. When the adjustment is 
complete, securely tighten the clamp screw.

  Note that if the throttle cup is moved be sure to re-

position it with no gap between the nozzle adapter 
and hub.

4.

5.

6.

7.

8.

9.

10.

       Perform the following steps when replacing a nozzle.

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.

1.

2.

3.

Use care when handling, removing and installing oil 
nozzles.
Carefully follow the guidelines provided in this sec-
tion.

•

•

CAUTION