4.2 Cleaning the inside of the hearth
Before performing any maintenance operation, take
the following precautions:
Make sure thee grid (A) (Fig. 4.2a) is free from any
combustion residues as they may obstruct the free
passage of air. Remove it and clean the furnace using
a hand brush (not supplied) conveying the combustion
residues in the ash drawer. Pay attention to any
burning embers (Fig. 4.2a).
Remove the ash pan from the base and remove any
ash that has deposited in the compartments below
(Fig. 4.2b).
Using an ash vacuum can simplify the final cleaning
operations of the fire-box (Fig. 4.2c).
The ash pan below the hearth must be emptied
out every day to stop it from filling up with ash,
thus causing the cast iron grate of the fire box
to overheat and preventing the flow of air to
the fire box.
The refractory bricks undergo expansion
deformations during the operation of the
appliance, due to the high temperatures
reached. For this reason the slots open
between one piece and another of the refractory
bricks should be considered normal. During
combustion these slots are filled from the ashes
which absorb the expansions of the refractory
bricks.
Fig. 4.2a
A
Fig. 4.2b
Fig. 4.2c
Product images are purely indicative
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