Stovax Riva Plus Midi Wood & Multi-fuel - Manual (Page 11)

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18.4 Appliance is producing tar:
This is identified by:
• A very strong pungent smell shortly after the appliance is
lit and heats up
• Glass blackening
• Thick, brown and sticky tar oozes from the pipe joints
This is caused by burning damp wood and burning your
appliance at too low a temperature;
• Use well seasoned wood and operate the appliance in the
ideal temperature range
Tar is a major cause of chimney fires - if you experience
problems with tar build up consult a chimney sweep before
continued use of your appliance.
Ideal working temperature range is 130°C and 240°C
(270°F – 465°F). Failing to close down the primary air
control once the appliance has heated up to this range
may cause the appliance to over-fire and to exceed the
ideal temperature range. Over-firing can cause permanent
damage to the appliance and invalidates your warranty.
UseR INsTRUCTIoNs
Your retailer can provide genuine spare parts such as replacement
glass, door sealing rope and fire bricks when required. An annual
service by a competent engineer is recommended to keep your
appliance in best possible condition.
17. seAsoNAl Use
17.1 Clean and service the appliance if it is not used during the
warmer periods of the year as detailed in the Maintenance
and Servicing section
17.2 Set the air controls 50% open to keep the appliance
ventilated and stop the build-up of any moisture inside.
17.3 Before re-lighting the appliance:
• Remove the baffles
• Clear any debris that may have accumulated
• Check the flue is clear of any blockages
18. TRoUBlesHooTING TIPs
18.1 stove glass blackening:
This has four possible causes:
1. Incorrect use of airwash – See Sections 1, 4 and 5 for the
correct use of the air controls.
2. Burning unseasoned wood – See Section 3 to identify
when wood is ready for burning.
3. stove operated at too low a temperature - good working
temperature is 300-500° F (120 – 250° C). A stove pipe
thermometer can identify this problem (Stovax part no
3046)
• Burn with the airwash control fully open for
approximately 20 minutes to cure this
The problem may be caused by damping your appliance
down overnight.
4. Problems with the flue – in particular insufficient air pull.
If the flue is not working efficiently the glass can blacken.
A flue which has too much downdraft may be too short or
needs lining or has too many bends. This can also cause
blackening of your stove glass. Contact the installer or a flue
specialist for advice.
18.2 Riddling mechanism jamming:
This occurs when fine ash builds up under the riddling bars
preventing movement. To prevent this:
• Follow a regular cleaning routine for the inside of your
appliance
• Lift out the riddling mechanism and remove all ash
• Replace riddling mechanism when cleaning is complete
18.3 Glass cracking:
Do not over tighten the screws on the glass clips when
replacing the glass as this causes stress and the intense
temperature changes can cause the glass to crack. For
replacement glass contact your local Stovax dealer.