Wolf COB Series Maintenance Instructions Manual page 7

Risk of burning through hot components
10. Lift the burner unit upwards out of the combustion
chamber lid and hang in place in the maintenance
position, as shown in the figure.
11. Undo the 4 mm Allen screw on the mixer head and
remove the mixer head.
Ignition cable
12. Pull the ignition cable away from the ignition electrode
and place the mixer head to one side.
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4. Maintenance procedure
Allen screw
13. Nozzle change with SW 16 open-ended spanner.
When attaching or detaching the nozzle, counter the
torque with a second SW16 open-ended spanner.
Note: Always use a Wolf original spare parts nozzle
(see page 5)
Mixer head versions:
Standard
Oil nozzle
Boiler Mixer head
versions
COB-15 Standard Danfoss 0,30/80°S
COB-20 Standard Danfoss 0,40/80°S LE
COB-29 Standard Danfoss 0,55/80°S LE
Standard Danfoss 0,65/80°S LE
COB-40
Pipe Danfoss 0,55/80°S LE
14. Clean or replace the flame light tube end piece on the
mixer head
Never remove or dismantle the mixer head;
NB
this applies particularly to the brass washer.
Flame light tube
end piece, mixer
head
Sight tube,
flame monitor
15. Plug in the ignition cable
Insert the mixer head until it reaches the end-stop. The
flame light tube end piece of the mixer head must be
aligned with the flame monitor sight tube.
Secure again using a 4 mm Allen screw
Pipe
Part no.
89 06 588
89 05 812
89 05 839
89 06 619
89 05 839
7