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Hopper cleaning (if required)
G
F
G
F
Fig. 22
1. Use a scraper or spatula to remove dry and flaking
deposits (ash, carbon and tar) from the walls and
from the front and rear corners.
Note
■
Small surface cracks in moulded refractory con-
crete parts are normal. Such cracks have no
bearing on the function or service life of the
parts.
Shiny black deposits on the interior walls of the
■
hopper are normal. Deposits need not be
removed.
Commissioning, inspection, maintenance
A
B
E
C
D
2. Check primary air vents
unrestricted flow. Clean with a vacuum cleaner if
required.
3. Clean nozzle slot
in base element
C
4. Use a scraper or spatula to remove dry and flaking
deposits (ash, carbon and tar) from the hopper
walls
E
, door frame
F
door
.
G
in side elements
for
A
B
.
D
and the inside of hopper
35
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