Rayburn 200S, User Instructions, Page: 5 / 17

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.
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 with solid fuel - 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.
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.
The firebox should be filled to the recommended level of
the bottom 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 12 times to free the grate of ash.
ALWAYS DE-ASH BEFORE REFUELLING AT
INTERVALS OF THREE TIME 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.
Due to an accumulation of pieces of stone, clinker and
shale etc. it may not be possible to pass them through the
grate when riddling, and may even cause jamming.
Allow the fire to burn out and then open the ashpit door
and remove ashpan.
1. Engage the curved end of the grate assembly removal
tool, within the groove in the centre of the
bottomgrate support (Fig. 6).
2. Raise the front end of the tool slightly and draw the
tool forwards so that the grate support moves forward
over its support lugs.
3. Taking the weight of the grate assembly lower the
front of the removal tool and withdraw the complete
grate assembly. Clean out.
4. Replace in reverse order of withdrawal ensuring the
grate support is positively located on the front points
of the ashpit.
The amount of clinker formation is dependent on the
burning rate and should be checked weekly for any build-
up. Excessive build-up will lead to a fall off in burning rate,
and reduction in life of the bottomgrate; so the
bottomgrate should be kept clear of clinker.
4
OVERNIGHT BURNING
REMOVAL OF CLINKER AND
BOTTOMGRATE
REFUELLING
REFUELLING
Fig. 6