15 Termo JOHANNA
Good maintenance will help improve stove operation, efficiency and service life.
Every day, before lighting the fire, remove any unburnt residuals on the grate and the ashes in the
ash pan zone.
4.1 Removing the ash
The JOHANNA continuous burning stove has a removable grate which should be cleared of ash,
using the poker supplied, every time before loading fuel.
Make sure to periodically empty the ash pan, since the accumulation of ash under the grate
hinders the flow of combustion air. Otherwise the grate will overheat and may become damaged
To prevent the risk of fire, allow the ashes to cool outdoors in a metal container or in the
stove and eliminate them in compliance with current local regulations.
4.2 Cleaning the glass
The glass can be cleaned using a damp cloth and normal non-abrasive detergents.
Remove any deposits with suitable detergents, before they become dry.
The ceramic glass can withstand temperatures of around 750°C : in case of breakage, it is
advisable to replace it with an original glass from COLA.
The glass must only be cleaned when the stove is cold.
4.3 Cleaning the cast iron hotplate
Before lighting the stove for the first time, make sure to carefully clean the hotplate with hot soapy
water, rinse with clean water and dry.
Before first use and after cleaning, the hotplate should be preheated for about half an hour with the
oven door open and the bypass damper lever in position ‘Z’. For regular cleaning of the cast iron
part of the hotplate, it is advisable to use slightly abrasive materials (e.g. sandpaper or steel wool),
rubbing in the direction of the surface finish.
At the end of the season it is advisable to apply a film of olive oil or neutral vaseline on the cast
iron hotplate to protect it.
4.4 Cleaning the oven
It is advisable to clean the oven when half-cold or cold and every time after it is used, in order to
prevent grime forming on the surfaces.
To clean the stainless steel surfaces of the oven, use a non-abrasive detergent with a soft cloth,
rinsing thoroughly to remove all traces of detergent which could otherwise contaminate food or
cause corrosion.
4.5 Cleaning the cladding
COLA ceramics are handicraft production and therefore may have minor surface imperfections
such as tiny spots or slight colour differences.
It is advisable to use a soft dry cloth to clean the ceramic surfaces; the use of detergents could
highlight any imperfections.
4.6 Cleaning the flue pipes and baffle
