HOUNO BM ovens - Manual (Page 14)

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3. Cleaning behind filter housing
For thorough cleaning of the oven chamber, move the filter housing so that it becomes possible
to clean round the fan and heating elements.
Loosen the 2 screws (A) and (B) on the filter housing, turn the filter housing and clean behind it.
The filter housing can be dismounted entirely by lifting it upwards till it is clear of the pin at the
bottom and then tipping it.
4. Cleaning of nozzle
The injection nozzle should be dismounted and cleaned according to requirement. The easiest
way to clean the nozzle is to let it soak in scale remover for approx. 6-8 hours.
When remounting the nozzle, the small notch should turn upwards, see illus.
(A)
(B)