NBE RTB Owner's Manual - page 22
Cleaning the Burner/Boiler:
Cleaning should be carried out as needed.
There is a big difference depending on
the construction setup, adjustments and wood pellet quality
on how often maintenance should be performed.
The maintenance table is only indicative and applies only for RTB systems!
When
needed
7
Days
14
days
30
days
1/2
annually
1
annually
x
x
Cleaning cinders out of burner head.
x
Cleaning under the combustion grate for dust and cinders.
x
Cleaning photo sensor from soot and dust.
x
Cleaning burner fan from dust.
x
x
Cleaning boilers, flues, and take semi cleaning out.
x
Emptying the last smoke channel for ashes.
x
x
Empty the ash pan, typically after 1,000-2,000 kg pellets.
x
x
Check gaskets / replace worn gaskets.
x
x
Adjusting the burner. (weighing the pellets)
x
x
x
Filling the hopper.
x
Emptying the hopper, dust and fines removed.
x
Chimney sweeper.
Turn off the burner in connection with cleaning.
Turn off the controller and allow to cool for approx. 5 min. Once the burner is completely turned
off, it is ready for cleaning. Unplug the burner, remove the shield, drop shaft and remove the
burner from the boiler so work can be easily performed.
Boiler.
All surfaces inside the boiler must be brushed clean from any deposits and the ash can must be
emptied. When empting the ash can, pay special attention to any build-up of ash in the rear
smoke chamber and flue, since the Chimney sweeper may not always be removing the ash from
chimney flue.
Never dispose of hot ashes in the trash, but let it cool in a metal bucket.
Hot ashes can start burning when it gets oxygen (air)
.
Burner head.
Remove any ash or cinders from the grate. Remove any pellet remnants under the burner grate.
Wipe the photo sensor clean. Ensure that there is nothing lodged in the fan and that it can rotate
freely.
Hopper.
Since pellet naturally contain dust, you should once in a while empty the hopper completely. The
more dust that is present in the hopper, the less the auger will dispense, and the more unstable
the dosing. The boiler will go out of adjustment with greater risk of downtime. How often one
should empty the hopper depends greatly on the design and quality of the pellets you use.
Put
1 dl cooking oil or similar into the hopper each time it is empty (poured over the last
pellets) So will the hopper automatically empties for sawdust and dust.
Start-up after cleaning.
Reassemble the system and turn on the controller, the burner will start up automatically.
Remember to reattach the shield so that the temperature reading on the burner is
correct.