PROBLEM
Stoves crack during
POSSIBLE CAUSES
Clay is too dense
Firing process is to fast
Cold draughts
POSSIBLE SOLUTION
Add fine sawdust or fine chopped grass
Reduce stoking rate fast
Close firebox doors during firing
Stoves damaged due to
mishandling of wet liners
Use boards to carry liners. This must be done with
care
Air holes in liners
Wedge clay to remove air bubbles before moulding
Fast cooling rate
Seal the cracks and firebox doors
One of the most common reasons for stoves cracking is poor quality control during the production
Dome collapsing or
cracking
Unstable dome
Make the dome higher
Wall cracking
Thermal expansion in the
joints and bricks
Repair the cracks
Joints in line
Rearrange the joints
Using the kiln before
it is dry
After construction, allow the kiln
to dry for at least 28 days
Explosions
Damp liners
Dry liners in the sun before firing
High fuel
consumption
Wet fuelwood
Waste as flames flow out
of the kiln chamber
Firebox mortar falling Weak joint
off
Stoves on the kiln
floor are cracking
Overfiring
Firing process too fast
Cold draughts
Use dry wod
Close the fireboxes after each stoking
Replace and repair the joints
Reduce fuelwood consumption rate
Reduce stoking rate
Close firebox doors during firing
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