Logosol SAUNO User manual

USER MANUAL
SAUNO
DRYING CHAMBER
EN
Ref. no: 0458-395-0641

LOGOSOL continuously develops its products.
For this reason, we must reserve the right to modify
the conguration and design of our products.
Document: User manual, LOGOSOL Sauno Drying Chamber
Ref. No. User Manual, English: 0458-395-0641
Text: Martin Söderberg
Illustrations: Martin Söderberg
Last revised: November 2020
© 2020 LOGOSOL, Härnösand Sweden
THANK YOU FOR CHOOSING A LOGOSOL MACHINE!
Read through the user manual carefully
and make sure you understand its
contents before you use the equipment.
This user manual contains important
safety instructions.
WARNING! Incorrect use can result in
serious or fatal injuries to the operator
or others.
We are very pleased that you have demonstrated your condence in us by purchasing this
product, and we will do our utmost to meet your expectations.
Logosol has been manufacturing sawmills since 1989. In that time we have supplied
approximately 50,000 machines to satised customers the world over.
We care about your safety as well as we want you to achieve the best possible results with your
equipment. We therefore recommend that you take the time to carefully read this user manual
from cover to cover in peace and quiet before you begin using the drying kiln. Remember that the
machine itself is just part of the value of the product. Much of the value is also to be found in the
expertise we pass on to you in the user manuals. It would be a pity if that were not utilised.
We hope you get a lot of satisfaction from the use of your new machine.
Bengt-Olov Byström
Founder and chairman,
Logosol in Härnösand, Sweden
#1

TABLE OF CONTENTS
Safety instructions 4
Components: Drying chamber 6
Assembly 7
Sauno drying programme 14
CE Declaration of conformity 16

4
SAFETY INSTRUCTIONS
For your own safety, do not start assemble or use
the drying chamber without rst having read and
understood all the contents of this user manual.
Do not let persons who have not read the
instructions use the drying chamber.
If used incorrectly, the drying chamber can
cause injury and material damage.
Do not connect the electric power until you have
installed the drying chamber according to these
instructions.
KEY TO SYMBOLS
This symbol means ’WARNING’. Pay particular
attention where this symbol appears in the
manual text.
This symbol is followed by instructions that must
be observed. Pay particular attention where this
symbol appears in the manual text.
GENERAL
The drying unit may only be used for drying wood in a
chamber intended for this purpose.
In this user manual ”cut the power” means that
the cable that supplies power to the equipment
should be disconnected from the mains and
placed such that no unqualied person can
reconnect it. Wait until the drying unit has cooled
completely.
Cut the power:
• before touching the part of the drying unit that is on
the inside of the drying chamber.
• before opening any of the inspection hatches on the
drying unit.
• before cleaning or other maintenance.
• before moving the drying unit.
Risk of burn injury.
The drying unit has hot heating elements. It
must not be started until it is correctly installed
in a drying chamber, and the drying chamber is
closed. Never put your hands inside the drying
unit unless the power has been cut off.
SITING
Risk of personal injury
Risk that the stack of wood falls on someone.
Risk of re if the drying unit or the stack of
wood falls/tips over
Risk that an empty drying chamber tent falls/
tips over due to strong winds
Follow the instructions below:
• Set up the drying chamber on a at surface that is rm
enough to hold the weight from the load.
• The wood should be stacked in a stable way. Certain
movements can occur in the stack when the wood is
drying.
• The drying kiln should be placed at a secure distance
from surrounding buildings and other objects that
can be damaged in an event of re. Safety distance
from the drying chamber and drying unit to any
combustible material should be at least 5 m. We
recommend you to contact your local re protection
authority for guidance if you are unsure.
• For maximum re and electrical safety, earth leakage
circuit breakers must be used.
• Ensure that the air in the drying chamber can circulate
and that the wood inside the chamber is not closer
than 5 cm to the drying unit.
• Place the drying kiln such that the start / stop button is
not blocked.
• Never step on the power cable of the drying unit. The
cable should be protected against accidental damage.
• If the drying chamber is empty it must be secured to
avoid it blowing over due to strong winds. The easiest
way is to leave a certain amount of wood inside the
drying chamber to give it stability.

SAUNO DRYING CHAMBER
5
BEFORE CONNECTING THE EQUIPMENT
TO THE MAINS
Check that:
• the fan wheel can rotate freely and that no loose
objects are left inside the drying unit.
• all inspection hatches are correctly tted.
• the connection cable that powers the drying unit is in
good condition.
• all visible fasteners are tightened. They might need
additional tightening after transport.
• the labelling of the drying unit matches your electrical
connection.
• Check the function of the thermostat.
ELECTRICAL SYSTEM
Risk of electric shock
The electrical system may only be opened by a
qualied electrician. Always cut the power to the
electrical system before it is opened or servicing is
carried out.
Risk of accumulating condensed water inside
the junction box due to large variations in
temperature and extreme weather.
Cut the power and let a qualied electrician
check that the junction box is dry.
MAINTENACE
After every fth drying cycle or as needed:
• Cut the power.
• Remove the drying unit from the drying chamber.
• Open the inspection hatches of the drying unit and
clean heating elements, the cooling air intake of the
electrical motor and the fan wheel with a soft brush,
soap and water. Make sure that all the water has dried
up before you re-install the inspection hatches and
connect the power cable to the drying unit
• Only use original parts supplied and approved by
Logosol for the purpose. Use only purpose made
original parts from Logosol. After service, the drying
unit has to be restored to its original design.
All inspection hatches and covers must be correctly
installed before the drying unit is taken into use. The
drying unit may not be modied or rebuilt in any way.
• The warning labels on the machine is for your and
others safety. Damaged or illegible labels must be
replaced.

6
03-02389
03-02465
03-02500
03-02468
M10
03-02470
M8
03-02469
M8x20
03-02467
M6 x 45
03-02466
M6
4,2 x 14
4,2 x 25
03-02391
03-02500
9031-011-0020
03-02390
1 x
1 x
1 x
1 x
1 x
1 x
8 x
14 x
4 x
14 x
8 x
14 x
12 x
8 x
8 x
8 x
4 x
16 x
1 x
6200-000-0020

SAUNO DRYING CHAMBER
7
03-02470
03-02469
4 x
8 x
M6
M6x 45
4x
4x
6200-000-0020
The following symbols are used as supplements
to the symbols above to describe the design or
function of the fasteners.
Denition of fasteners.
The size of a fastener is written as a diameter
measurement (M) ISO 68-1. For bolts, this is followed
by a length measurement. The length of the bolt is
measured from below the head to the tip of the bolt.
Low Tensilock Lock Countersunk
ADDITIONAL SYMBOLS
Allen bolt
Partial thread Allen bolt
Partial thread hex bolt
Hex bolt
Partial thread ange bolt
Flange bolt
Carriage bolt
Shoulder bolt
Phillips bolt
Slotted bolt
Set screw
Hex nut
Flat washer
Flange nut
BOLTS & NUTS
(Diameter)
DIAMETER/LENGTH
(Length)
M8 x 20

8
M6
M8x 20
8x
8x
8x
M6
M10
M10
M8x 20
6x
6x
8x
6x
6200-000-0020
03-02466
03-02389
03-02465
03-02390
03-02391
1
2
3
4

SAUNO DRYING CHAMBER
9
M6
M6x 45
2x
2x
6200-000-0020
M6
M6x 45
2x
2x
3
4

10
Mount the laths on the top struts. These laths are
mounted from the inside of the drying tent and are
folded by hand around the struts. Start from one side
side of the drying tent and place the laths with about
25 cm spacing between them. That will prevent the
frame struts from bending.
Note that both bendings of the
plate should point in the same
direction.
90
90
6200-000-0020
12x 03-02467
03-02500
5 7
68

SAUNO DRYING CHAMBER
11
Use a pair of scissors and cut a hole in the outer
tent to enable the installation of the drying
unit. Fold the corners around the inside of the
hole in the tent side plate.
6200-000-0020
Fit the drying unit and safety plate in the cut
hole in side of the tent. Make sure that the
drying unit clamps against the fabric corners,
which are folded on the inside of the drying
tent.
7
8
4.2 x 14
4x

12
Take a board that is 50 mm x 100 mm and cut four
pieces that are 670 mm in length. Fit these boards to the
feets for the lower struts.
Use the tent side plate with the ventilation hole
as a template when you make the hole for the
air vent. Note that you have to make a hole in
the fabric of both the inner and outer tent.
6200-000-0020
03-02500
9031-011-0020
4.2 x 25
16x
9
10
11
12

SAUNO DRYING CHAMBER
13
6200-000-0020
9031-011-0020
11
12

14
The timber should be stacked such that the drying unit
is able to blow the circulating air under the timber stack.
Place the timber on the bed using spacers between each
layer. The spacers should be at least 15 mm thick and
placed above each other between the timber layers.
STACKING THE TIMBER
Place the drying chamber on a stable and at surface that can hold the weight when the drying chamber is fully loaded
with wood. The foundation can be built of wood, preferably with a layer of insulation boards, e.g. styrofoam, to make
it more energy efcient.
In a part of the drying process condensation will occur and you will get water in the bottom of the drying chamber.
To save energy och shorten the drying process the foundation underneath the drying chamber can be adjusted so it
is leaning about 2 degrees near the corner that is furthest from the drying unit. Make a 5 mm drainage hole in that
corner and make room underneath the drying chamber so the water can inltrate into the ground.
The drying chamber should be placed outside and at a safety distance from other buildings. The WDU drying unit
should be protected from water and other precipitation. This is best achieved with the Logosol drying chamber that has
an outer cover which protects it. Be aware that wood with a high moisture level that is heated can often have a strong
smell and that large amount of steam is ventilated out from the drying chamber.
At increased temperatures slight colour changes in the wood occurs. Timber with a large amount of sapwood and
timber with a lot of knots (especially dry knots) darkens more easily. But there are also benets with high temperatures,
especially when it comes to furniture timber. High temperatures force out resin from the wood, which reduces the risk
of later resin bleeding. The colour changes that occur in a Sauno wood drying kiln are usually minor. If you are unsure
of what colour changes there will be, it can be a good idea that you rst dry a smaller amount of wood as a test. For
hardwood, colour changes that come when using a wood drying kiln are usually desirable. Today, most of the modern
drying plants use tempreatures between 70° and 110°C. The Sauno kiln uses a maximum temperature of 75°C.
SITING
COLOUR CHANGES

SAUNO DRYING CHAMBER
15
Close the drainage hole so the water stays inside the drying chamber. If the wood is green you usually do not need to
add any water into the drying tent. However, it is a good idea to pour about 1 litre of water into the drying chamber
regardless.
The ends should be sealed with a linseed oil paint. The reason for that is that the ends will dry evenly with the rest of
the board. If you do not seal the ends you will get more cracks because they will dry faster the the rest of the board.
Oak and chestnut contain tannic acid and we recommend that they should be air-dried for one year before they are
dried in the kiln to avoid corrosion on the drying unit.
Close the drainage hole in the drying chamber so all the water stays inside. If the wood is green you normally do not
need to add any water. However, we recommend that you pour about 1 litre of water over the wood in order to reach
100% humidity quickly. Close the drying chamber and the vents. Set the thermostat to 50°C. Steam the wood for at
least 48 hours or until the temperature in the drying chamber has stopped increasing. If the outdoor temperature is
cold the temperature in the drying chamber might stabilize just below 50°C.
You can open the drying chamber to inspect and measure the moisture level. Open the drainage hole during this
process. Set the thermostat to 40°C. Open up both vents ¼. Check at least once a day that it feels damp around
the edge of the outlet air vent. If not, close the vents slightly more. If it is damp around the vent, you know that the
humidity inside the kiln is sufciently high for making the water in the wood travel from the inside to the outside. It
usually takes 2-4 weeks before the wood is dry. Use a moisture meter to measure the process and see when you have
reached a desired moisture content. Let the wood rest indoors for 1-2 weeks before using it. This gives the wood an
even moisture content.
Eco-advise: If you are not in a hurry we have a good advise to give. After two weeks of running a high temperature,
lower it to 25°C and keep the fan running. It can take a bit of time for the moisture to even out in the wood and
during that time you will save some energy by lowering the temperature. Run it on this temperature for a couple of
weeks before you increase it again and continue on a high temperature until the wood has reached a desired moisture
content. After the drying process has been nished you can leave the stack inside the drying chamber and use a very
low or no heating at all. Leave the vents open and the fan running. If the fan is turned off the risk is that mold/fungus
will start to grow on the surface of the boards.
The Logosol WDU kiln uses a relatively low temperature but with high circulation, which gives an energy efcient
process. The low temperature used will also give minor colour changes to the wood and reduces the occurrence of sap
and resin bleeding. The Logosol drying chamber should not be used at temperatures below 0 degrees C.
SAUNO DRYING PROGRAMME
PREPARATIONS
DRYING TECHNIQUE
DRYING PROCESS
STEAMING PROCESS

LOGOSOL SWEDEN
Fiskaregatan 2, S-871 33 Härnösand, SWEDEN
Phone: [phone] | Fax: [phone]
[email protected] | www.logosol.com
LOGOSOL AB,
Fiskaregatan 2
S-871 33 Härnösand, Sweden
Phone: [phone],
herewith declares that the Sauno Drying Chamber has
been manufactured in conformity with:
Machinery Directive 2006/42/EG, EMC Directive
2004/108/EG and LVD Directive 2006/95/EG.
Mattias Byström, Product Manager, is responsible for
the technical les.
Härnösand 2020-10-21
Mattias Byström, CEO
EU declaration
of conformity