Control Setting
Set spinwheel open which does not require to be open
more than:
1. Coke - Five complete turns.
2. Other recommended fuels - three complete turns
during cooking period. When the fire is established the
spinwheel may only need to be open less than one
turn to maintain temperature. This will be observed
through experience.
Set the flue chamber damper fully open after refuelling
and reset to position which has been found by practical
experience to give the best results. Do not try to obtain a
fast increase in temperature by opening the flue chamber
damper to its fullest extent. This results in most of the heat
being wasted up the chimney.
Avoid excessive fire temperatures - they are
unnecessary and may do serious harm to the cooker.
The first symptoms of an overheated cooker is the
formation of clinker (melted ash) which will damage the
firebricks.
Damaged firebricks should be replaced as soon as
possible but may be temporarily repaired with fire cement.
Keep the ashpit door securely closed with the front
plate catch.
The appliance is designed for continuous burning and the
best results will only be obtained if it is allowed to burn
overnight. It is no more expensive in fuel costs.
Last thing at night, de-ash the fire, empty and fully refuel
but do not overload.
Ensure that the firebox and ashpit doors are securely
closed and after closing the spinwheel, re-open it a
quarter of a turn.
Turn the pivoted dilution lever (on the bottom front flue
chamber door) Fig. 4 from left to right hand side so that
the door opens at the bottom and minimises the burning
rate and chimney condensation.
NOTE: THE PRECISE AMOUNT OF OPENING
DEPENDS ON THE CHIMNEY DRAUGHT AND MAY
TAKE 2 OR 3 DAYS TO ASCERTAIN IN CONJUNCTION
WITH THE TYPE/CONDITION OF FUEL BEING BURNT.
1. If the fuel in the firebox is exhausted prematurely, the
overnight chimney draught must be reduced by further
opening of the flue chamber door.
2. If the fuel does not burn but ‘dies out’ the draught
should be increased by partly closing the flue
chamber door. In the morning, close the flue chamber
door, open the spinwheel and damper and fuel the fire.
Immediately the new fuel has caught alight, riddle the
fire and close the damper.
NOTE: THE BEST POSITION FOR THE FLUE
CHAMBER DAMPER CAN BE FOUND ONLY BY
EXPERIMENT BUT ALWAYS TRY THE LOW SETTING
FIRST.
In the morning, open the spinwheel three complete turns,
the flue chamber damper to maximum and riddle the fire.
When it is burning brightly, close the flue chamber
damper, but do not refuel before use if the hotplate is
required immediately.
Open the flue damper fully before opening the firebox
door. This will prevent smoke spilling into the room.
Remember to reset the flue damper after refuelling. If
excessive smoke spills into the room, check the flueway
and clean thoroughly before continued use of the
appliance.
The firebox should be filled to the recommended level of
the bottom of the firebox door opening and the firebox
door closed.
NOTE: A DEEP BED OF NEWLY CHARGED FUEL ON A
LOW FIRE WILL TAKE TIME BEFORE HEAT REACHES
THE OVEN, HOTPLATE AND BOILER. WHEN
BURNING COAL, PHURNACITE AND ANTHRACITE
ALLOW SEVERAL MINUTES FOR THE NEW CHARGE
TO IGNITE BEFORE CHANGING THE FLUE CHAMBER
DAMPER SETTING.
ONCE FUELLING HAS BEEN COMPLETED, CLOSE
THE FIREBOX DOOR IMMEDIATELY AND OPEN ONLY
FOR REFUELLING CHARGES.
To de-ash, open the chimney damper to its maximum
setting then:
1. Engage the operating tool on the riddling lever knob.
2. Push the operating tool in a back and forth motion
about 8-12 times to free the grate of ash.
ALWAYS DE-ASH BEFORE REFUELLING AT
INTERVALS OF THREE TIMES DAILY AT LEAST.
NOTE: SHOULD THE BOTTOMGRATE DE-ASHING
FAIL TO CLEAR AN ACCUMULATION OF STONES,
SHALE OR CLINKER IT MAYBE REMOVED AS
DESCRIBED IN SECTION ON REMOVAL OF CLINKER.
Open the ashpit door to give access to the ashpan which
must be emptied regularly (Fig. 3). The class of fuel and
cooker usage govern the frequency of refuelling.
NOTE: DO NOT ALLOW ASH TO ACCUMULATE IN
THE ASHPAN UNTIL IT TOUCHES THE UNDERSIDE
OF THE BOTTOMGRATE OR IT WILL QUICKLY BURN
OUT.
Ensure the ashpan is fully home otherwise the ashpit
door may not close and lock completely.
EXCEPTIONS: WHEN BURNING ANTHRACITE OR
PHURNACITE, ALWAYS REFUEL BEFORE EMPTYING
ASHPAN AND RIDDLING.
4
OVERNIGHT BURNING
REFUELLING
DE-ASHING
Fig. 6
