5
FUELLING
1. The ashpit door spinwheel does not require to be open
for more than:-
a) Coke - Five complete turns
b) Other recommended fuels - Three complete turns
during cooking period.
2. Ensure the chimney damper is fully open prior to
refuellng.
3. With the firedoor only open, fill the firebox to the
recommended level of the bottom firedoor opening
(not above) and
close the firedoor
. A deep bed of
newly charged fuel on a low fire will take time before
the heat reaches the oven, hotplate and boiler. When
burning coal or Anthracite, allow several minutes for
the new charge to ignite before changing the damper
setting.
4.
Once refuelling has been completed, close the
firedoor immediately and open only for re-fuelling.
CONTROL
Fig. 10
Fig. 8
Fig. 9
Fig. 11
The fire is controlled by using the spinwheel on the ashpit
door to govern air supply. The chimney damper in the flue
chamber is for reducing the chimney draught, and the
more the damper can be closed the easier the cooker is
to control. It is marked to enable you to repeat the best
settings you find suits your chimney
No.1
is closed
position and
No.6
when fully open.
Do not try to obtain a quick increase in temperature by
opening the chimney damper to its full extent. This results
in most of the heat being wasted up the chimney.
Avoid excessive fire temperatures with solid fuel - they
are not necessary and may do serious harm to the
cooker. The first sign that the cooker is being overheated
is the formation of clinker (melted ash), and clinker will
damage the firebricks. Damaged firebricks should be
repaired with fire cement or if necessary replaced as soon
as possible.
Keep the ashpit door securely closed with screw
catch provided.
Main Oven
The correct adjustment of the spinwheel damper to obtain
the oven temperature required varies with the chimney
draught, and can be found only by experiment. The
following is a suggested method only, and may need
modification to suit local conditions. Suppose an oven
temperature for roasting is desired and the cooker is
idling.
Thoroughly de-ash the fire as described in the ‘
Riddling
’
paragraph, and refuel. Set the chimney damper to
No. 3
setting and open the spinwheel as described under item
1 of ‘
Fuelling
’. As soon as the fire has become nicely red
all through, close the chimney damper. Do not allow the
fire to become white hot. The temperature of the oven
should now rise steadily. When it reaches a point about
30ºC (50ºF) below that required, close the spinwheel to
approximately one turn open. Thereafter control the
temperature of the oven by adjusting the spinwheel.
