General Information; What Are Wood Pellets - Ravelli o-ring User Manual

Spare parts
Exclusively use original spare parts. Do not wait for the components to deterio-
rate before replacing them.
Replace a worn component before it is completely broken to prevent any ac-
cidents due to sudden breakage of the components. Carry out periodic mainte-
nance controls as described in the dedicated chapter.

General InformatIon

The wood pellets are made from sawdust and wood shavings produced in join-
ers' shops. The material used cannot contain any foreign substance such as
glue, varnish or synthetic substances.
Subjecting it to high pressure, the wood is pressed through a plate with holes
and due to the high pressure the sawdust is heated activating the natural bind-
ers of the wood. Thus, the pellets keep their shape even without the addition of
bonding substances.
The density of the wood pellet varies according to the type of wood and can be
1.5 - twice greater than that of natural wood. The diameter of the cylindrical
rods is 6-10 mm and their length can vary between 10 and 50 mm.
Their weight is equal to about 650 kg/m
10%) they have a high energy content.
The standards DIN 51731 define the quality of the pellets
Length: 10 - 30 mm approx. Residual humidity: 6 - 12% approx.
Diameter: 6 - 10 mm approx.
Real weight: 650 kg/ approx.
m³
Calorific power: 4.9 kWh/kg approx.
The pellets must be transported and stored in a dry place. They swell on contact
with damp, and cannot be used. They must always be protected from the damp
both during transport and in storage.
Ravelli srl recommends a pellet with a diameter equal to 6 mm.
If you wish to use a pellet type with a different diameter contact the support
centre to carry out the due regulations on the stove.
. Due to the low content of water (8-
3
Ashes: <1.5%
Specific weight: >1.0 kg/
dm³
Excerpt from the DIN PLUS standard
This standard requires that the pellet is produced with starting material "virgin
wood" free of contaminants (glues, paints, preservatives). Manufacturing, how-
ever, alloews the use of vegetable non-chemically modified thermal agglutinat-
ing agents such as wheat flour, rye or starch, which cannot however exceed
2% of the product. The pellets can be light or dark, usually packed in bags
bearing the manufacturer's name, the main features and the marking of DIN
Plus standard.
7 USER MANUAL
O-RING
!
Do not put the bag
of pellets on the ceramic parts
during the loading operations.