DUUN VM370 User manual

Fire wood processor VM370
Instruction manual
Duun Industrier as
7630 Åsen, Norway
www.duun.no
Duun Industrier as
7630 Åsen, Norway
www.duun.no

2
Congratulations with your Duun VM370 firewood processor.
All Duun tractor operated machines has been engineered and tested in close cooperation with end
users of our products. This in order to develop reliable and user friendly machines
Please red instructions manual before you start using the machines..
Machine identification
Serial number and manufacturer should be indicated at badge (A)
Register serial No and time of delivery as indicated.
Do always specify serial number every time requesting service for the machine.
The machine has a CE-badge (B) this confirms that the machine has been manufactured in
conformity with: Directive 2006/42/EC Machinery.
.
Serial number
Time of delivery (month-year)

3
Innholdsfortegnelse
MACHINE IDENTIFICATION 2
SAFETY 4
WARRANTY TERMS 9
DELIVERY FORM FOR DUUN VM420 FIREWOOD PROCESSOR 10
SPECIFICATIONS 11
PREPARATION FOR USE 13
PRACTICAL USE 17
CHAIN SHARPENING AND TIGHTENING 22
SERVICE AND MAINTENANCE 25
DECLARATION OF CONFORMITY 29

4
SAFETY
All operators, mechanics and the owner must be well acquainted with the instruction in this instruction
manual before the machine is taken into use.
You should always work with care when you employ agricultural machinery. Read and observe the
safety instructions in this binder. Your safety is your responsibility!
Be particularly aware of warning signs with this symbol it marks measures
that must be carried out in order to avoid accidents. The symbol appears in
the instruction manual and on warning signs on the machine.
Instruction manual
All operators, mechanics and the owner must be
well acquainted with the instruction in this
instruction manual before the machine is taken
into use.
The safety of the surroundings
Make sure that no-one not concerned are
present in the area of work. We emphasize as
strongly as possible that only one person is to
handle the machine, i.e. operate the saw chain
sword and the splitter. Nobody is to assist the
main operator in the work area - risk of injury!
Never start the machine when there are people
or animals close to the machine or the tractor.
Never stand between the tractor wheels and the
machine!
If other persons than the operator of the
machine are present in the risk zone, the
operator is to explain the danger the machine
involves!
Personal protection equipment
You should always wear hearing protection and
protective goggles when using the wood
machine. Further, you should use protective
footwear and sturdy work gloves during handling
of the machine and the materials.

5
Clothing and the drive shaft
Do not work in clothing that may be caught in
the moving parts of the machine (for example
scarf, wide coats).
The tractor must be disconnected and the hand
brake activated before the shaft is connected to
the tractor’s power take-off. The drive shafts are
always to be equipped with original protection
covers.
Damaged and worn covers are to be replaced
immediately!
Make sure that all covers for the shaft are in
good condition and correctly fitted. Never start
the machine when this is not in order. The
locking chains for the plastic covers are always
to be fixed to the appropriate brackets in order to
prevent the covers to rotatete
Safe connection and use.
Allow nobody to stay between the machine and
tractor when the machine is connected to the
tractor. The same applies during use of the
machine. Make sure that the connection is
carried out in a safe manner.
6. Safety in case of interruptions and
maintenance.
Remember always to stop the tractor’s engine
and remove the ignition key before you lubricate,
adjust, clean or carry out repairs. This is to
secure that the tractor does not start before you
have completed the operation.
Hydraulic high fluid pressure.
Be careful when you work with hydraulics. Wear
eye protection and gloves. Hydraulic oil under
great pressure may penetrate the skin and cause
serious infections. See a doctor is you have had
had an injury. Ensure that no-one is standing
close by when hydraulic functions are performed

6
Rotating parts –risk of crushing
The machine’s rotating parts may cause severe
injuries. The same applies to risk of crushing
during operation.
All covers and protective equipment is to be fitted
on the machine during use. The user is
responsible if an accident occurs as a
consequence of defective protection.
Avoid all unnecessary stay in the working area
when the machine is in operation.
Never put your hand in behind the protective
screen even if the saw chain is in back position
Zero alcohol tolerance
Persons who are under the influence of drink or
drugs must not operate the machine. The same
applies to tired people who do not have full
control over their movements.
Contact with electric wires and similar during
transport.
Be aware that the wood machine may be taller
than the tractor during transport and there is a
risk of contact with electric wires, railroad
underpasses etc!
If the machine has been set up for splitting of
60cm wood lengths, it should be set back to
40cm before moving. This is because the
machine will protrude on the right side if it
transported in "60cm set-up". If you choose to
move the machine in “60cm set-up”, you should
be very attentive of the fact that there is a
protrusion beyond the width of the tractor on the
right hand side
Conveyor –conveyor belt
Avoid staying under the transporter when this is
under tension in order to avoid injuries in case of
any uncontrolled downfall during use. Also avoid
contact with the transporter’s moving parts during
use.
.

7
Horizontal positioning and tidiness on the
workplace
Always place the machine as horizontally and
steady as possible to secure stable working
conditions.
Keep the workplace as tidy as possible. This
contributes to generally better safety against
unwanted events.
Area of application
The machines are only intended for production of
fire wood from “pure” wood material without any
contaminants. It is not allowed to employ the
machine for other material such as construction
waste and similar with metal parts such as nails,
screws and similar. The same applies for
materials that are polluted with plaster and
similar coatings. The saw chain is only designed
for wood materials without contaminants.
Good lighting –a necessity.
The machine must only be used in daylight that
secures a good overview of the operations –or
with artificial lighting which provides good
overview of the work area.
Good lighting is very important with reference to
safety.
Safe transport
Before the machine is moved, the feeder
conveyor and transporter (both in an up-right
position as outlined in the illustration) are to be
strapped to secure that they do not fall down.
The loading strap has a fixing point at the lower
part of the feeding conveyor and secures the
conveyor belt from falling off during transport

8
Safe cutting
Avoid placing your hands close to the saw chain.
This is obtained by consequently using the log
holder A and the handle B to operate it.
For cutting the last log of wood, it is important to
retain a “suitable” length and cut a shorter piece
as the next to last..
You are advised to use the “count-down ruler” for
the last three lengths so that these may be cut to
a somewhat shorter even length than the desired
length.
When you want to cut twiggy or crooked logs, it is
important to make sure that these are securely
placed.
Before start-up after maintenance you should check that all tools have been removed and brought
back into place.
Before the machine is elevated or lowered, you should check that no-one is close to or touch the
machine.
If any warning signs are removed during repair or service, new signs must be fitted

9
Warranty terms
Fire wood processor VM370 has a 12 month guarantee against defects in materials and
workmanship.
Parts that are not originally manufactured by Duun Industrier AS, for example shafts, bearings etc.
are subject to these suppliers’ guarantees and terms.
Parts that are considered to be wear parts are not part of the basis of the guarantee - these have
been specified in a separate survey on the bottom part of this page.
In cases where a repair is considered to be covered by the guarantee, the representative must inform
the supplier’s representatives that the repair is intended executed on the basis of the guarantee.
In this context, the following information must be recorded:
Product name
The product’s serial no. (see the machine identification pp. 6 and 7]
Date of sale
The product owner’s telephone no.
Dealer with address, telephone no.
In case of such a repair, the supplier is presented with a claim within 3 weeks after the repair date.
Replaced parts are to be kept until a decision has been made with reference to the claim and the
replaced parts are to be forwarded to Duun Industrier for assessment if so required.
As the employment of the product is beyond our control, we may only guarantee the quality and do
not accept liability for the product's general performance.
The guarantee liability assumes that the prescribed maintenance has been carried out.
Duun Industrier reserves the right to modify the design and specifications and/or make alterations
and improvements without notification.
What is not included by the guarantee
The guarantee does not cover economic loss as a consequence of interruptions.
The guarantee does not cover consequential loss due to defects.
The guarantee does not cover defects or damage caused by misuse and use that is not in
accordance with the instruction manual’s specifications and guidelines.
The following parts and material are considered as wearing parts and are not covered by the
guarantee:
.
The chain saw bar
The saw chain
The wood splitter knives
The feeding belt
Oil filter
Hydraulic oil
Filter cartridge for hydraulic oil
Wear parts in splitting mechanism

10
Delivery form for Duun VM420 firewood processor
Machine specifications
Model _ _ _ _ _ _ _ _ _ _ _
Serial No.. _ _ _ _ _ _ _ _ _ _ _
Customer details
Machine owner _ _ _ _ _ _ _ _ _ _
Address _ _ _ _ _ _ _ _ _
Aip code. _ _ _ _
Town _ _ _ _ _ _ _ _ _
Hand over of machine
Sales representative and customer have controlled that the machine do not have any transportation damages and that
specified equipment is delivered..
The customer has been instructed how to use the machine:
-How to prepare machine for use from transport position.
-Height adjustment of machine and correct length of pto to reduce strain
-from too steep angle between tractor and processor (page 14 and 18)
-How to control temperature and oil level. (page 13)
-How to control eventual condensation level in oil tank (page 14)
-What is correct pto speed . (page 17)
-The machine functions.
Feed belt: Speed adjustment . (page 18)
Use of ”remote” control
Cutting : Adjustment of saw movement speed and power (page 18)
Sharpening and tightening of chain. (page 21-23)
Adjustment of chain greasing (page 23)
How to use log clamp. (page 19)
Splitting: How to use handle for forced return . (page 20)
Elevation of splitting knives and change og splitting knives (page 19)
How to switch from 40 to 60cm splitting length and vice versa. (page 16)
Conveyor: Speed adjustment . (page 18)
Sideward movement of conveyor. (page 20)
Sales representative and customer have read about service and maintenance (page 24-28).
The customer has been introduced to warranty terms (page 8)
The customer has been introduced to conditions for practical use (page 17)
Part list is available at sale representative.
Place _ _ _ _ _ _ _
Date _ _ _ _ _ _ _
Customers signature Sales representatives signature
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

11
Specifications
Feature
VM370
VM370X
Cutting diameter max
37 cm
37 cm
Max splitting force
7000 kg
8500 kg
Chain drive
Hydraulic
Hydraulic
Log length
20-50 cm stepless
20-50 cm stepless
Saw chain type
1,6 mm
1,6 mm
Cjhain speed
23 seconds metre
23 seconds metre
Size saw chain
0,325" deling
0,325" deling
Saw chain links total
78 links
78 links
Weight
Ca 880 kg
Ca 880 kg
Moving log stop?
Yes
Yes
Height of work table
880-960 mm
880-960 mm
Support legs
Asseccory 0-40-80
mm
Asseccory 0-40-80
mm
Splitting knife
4-part frame mount
6-part frame mount
Rinsing conveyor
Yes
Yes
Swa chain lubrication
Separate pump
Separate pump
Knife adjustment
Manual
Hydraulic
Number og hydraulic
pumps
2
3
Feeding belt A
Hydraulic
Hydraulic
Conveyor length B
4000 mm
4000 mm
Conveyor movement
sideways D
25° each side
25° each side
Maximum height E
2540 mm
2540 mm
Maximum width C
2400 mm
2400 mm
Depth transport position
1500 mm
1500 mm
Saw chain oil container
2,5 liter
2,5 liter
TPM’s at pto
400 rpm
400 rpm
Hydraulic oil volume
75 liter
75 liter
Asseccories
Item numbers
4-part splitter
14131128
6-part splitter
14131035
Adjustable support legs
141309131
Triangel quick connect
1252637
HMV quick connect
1252638
Log rack manual
141409001
Log rack hydraulic
141409002

12

13
Preparation for use
Transport and handling before use
The VM420 body is equipped with a fork pocket
(A) for handling with fork truck or pallet forks. Be
aware that one individual wood machine weighs
about 875 kg. Use lifting equipment designed for
such total weight
Preparation for moving with tractor.
The transporter is folded together in the joint E.
Afterwards, the transporter is moved to an up-
right position by means of the winch wire. During
this process, the protection cover is shifted in
point B Feeding table and the conveyor belt is
adjusted to a vertical and horizontal position by
releasing the locking pin in point G
Securing before moving
Finally, the connection between the feeding table
and the transporter should be secured by means
of a strap for this purpose with fixing points as
shown in the illustration. This is important to
ensure that the feeding conveyor is kept in place
during transport and the connection between the
feeing table and the transporter is safely secured.

14
Hydraulic oil - quality.
The machine’s performance will, to a high
degree, depend on keeping the hydraulic oil
intact. The greatest elements of risk for the
quality of the oil are
Excessively high temperature which
entails poor lubrication performance and
risk of faults and break-down of expensive
components such as valves, pumps and
motors.
Condensation which is formed during
conditions including humid air combined
with temperature fluctuations. (the oil tank
breathes through the filter and sucks in
humid air)
Condensation water in the oil has the
same effect as excessively high oil
temperature. Condensation appears
mainly during use in conditions involving
humid air and temperature around 0°C.
The oil tank is equipped with a draining
plug for changing oil and checks for
condensation
Oil level check.
The machines are filled with 78 litres hydraulic oil
from the factory. Recommended oil quality is ISO
VG46 (viscosity group 46). Examples of such oils
are Ambra Hydrosystem 46 HV, Mobil DTE15m,
Statoil Hydraway HVXA46.
The oil level must be checked by observing the
sight glass A which is fitted in the suction grille
for the hydraulic oil tank.
Oil temperature check
It is very important to keep track of the oil
temperature B and avoid situations where it
exceeds 70 degrees. This situation may occur
during unfavourable operating conditions for
example in case of too high rotational speed
during use. The pto speed should under no
circumstances exceed 400 rpm
The processor has a built in temperature control
device cutting off machine functions if the oil
temperature goes too high. Stop the machine
and cool off before further operation.
Condense check
The oil tank is equipped with a drainage plug C in
the bottom. Grey oil is an indication of water in
the oil. In case the oil is polluted with water, all
the hydraulic oil must be changed.

15
Beyond such conditions, the hydraulic oil must be
changed every year or after 500 operating hours
(whatever occurs first).
.
Drive shaft
The requirement for the length of the drive shaft will vary in pace with the size of the tractor and the
length of the steady-braces.
If there are operating angles from 25 degrees and upwards, you should employ a category 6 shaft to
ensure long service life.
If there are great angles, it might be advantageous either to lower the tractor or elevating the machine.
It may be elevated by means of the supporting legs which is standard equipment fitted in the corners
and elevate the machine up to 80mm.
Ensure that the pto shaft had sufficient length. The profile tubes in the shaft are to, after any cutting,
overlap by half the tube length. Any cutting of the shaft must be executed in accordance with the
instructions for such operations –the cut must be trimmed for burrs both on the inside as well on the
outside and the profile tubes should be well greased. Too short telescope length of the shaft entails a
risk of overload of the tractor’s power take-off and the gearbox of the VM420.
Please lubricate the PTO drive shaft before use.
The locking chains for the plastic covers are always to be fixed to the appropriate brackets in order to
prevent the covers to rotate.
The drive shaft must be maintained and used in accordance with its instruction manual.
In order to obtain better operating angle, you may let the machine stand by itself and place the tractor
at a distance and employ a longer drive shaft during operation.

16
Preparation for transport.
Preparing for transport by
1. Releasing the strap fixing point
and loosening the strap at the
points outlined in the illustration.
2. The transporter is put in place
by releasing the winch and the
wire which holds it in place –the
transporter will fold out until it is
level with the ground.
3. Afterwards, the transporter is
folded out in its full length in the
joint E.
4. The transporter is elevated to
the required height by means of
the winch.
Preparation of the feeding conveyor
The feeding conveyor is folded in place by releasing the locking pin at letter G which locks it.
The belt is tensioned by adjusting the screws at letter H. The belt is sufficiently tensioned if it feeds in
the wood without friction. Too hard tensioning increases the wear of the belt and reduces the service
life considerably.
An indication of what is suitable tensioning is when the belt in the middle of the feeding table, allows
for 30-40mm –Re. Illustration 4, letter I.
Sideways adjustment of conveyor
The conveyor can be fixed in three positions at
each side that is totally 7 positions. In order to
loose the lock the handle A must be moved. The
conveyor is now release for sideways movement.
The handle A will grip the first vacant position
available and lock the conveyor sideways. If
wanted to move to the utmost position m Hvis
man ønsker å ”sideregulere” til ytre posisjon, er
det hensiktsmessig å bevege transportøren
sideveis til første stopp og så løse håndtaket A
for å komme til neste posisjon.

17
Adjustment of cut length
The cut length can be adjusted by loosening the
screw Aand adjust the stop point Bto wanted
length.
Adjusting machine height
For eventually elevating the machine in intervals
of 40mm up to 80mm the support legs in each
corner can be adjusted.
Adjustable legs are extra equipment.
Our item No.: 141309131
Practical use
Condition
The machine may not be used before the
operator has done the following:
Has read the instruction manual and
knows how the machine works and how to
operate it.
Has made himself acquainted with and
observed the information regarding safety
described on pages 8 to 12 in the
instruction manual.
Employs suitable clothing; i.e. hearing
protection –protective goggles –
protective footwear –work gloves.
Does not use clothing that may be caught
in the moving parts of the machine (for
example scarf, wide coats).
If any faults occur in the functions of the
machine during employment, the machines is
to not to be used before the defects have
been repaired.

18
Start-up and suitable rotating speed –500
–540 rpm
The power take-off of the tractor is connected at
low rotating speed and increased slowly to 540
rpm which is the max rotating speed of the pto.
In order that the machine is to work at its
optimum, the rotating speed must be between
500 and 540 rpm.
At lower speed, some functions will receive too
low oil pressure.
Let the machine run for some minutes before
you start the hydraulic functions
Activating electric control
The processor is equipped with electric
controlled valves for splitter, saw motor and
safety functions
Connect the cable delivered with the machine
to the socket marked A and to the tractors
12volt outlet. Other 12v electricity sources
like like the tractors 12v battery can also be
used as power source.
When starting the machine or every time the
electricity supply is cut, the lid (B) covering the
splitter must be opened and closed for activating
the electric control..
Main functions –feeding –speed
adjustment of the feeding conveyor
The wood material that is to be cut is fed by
means of the feeding conveyor.
The main functions are
A. To move the feeding belt
forwards/backwards.
B. Operate the cutting sword up and down.
C. Releasing the splitting blow.
It is important that the feeding until the stop is
carried out in a moderate speed so that the logs
do not bounce back.

19
Adjustment of cutting
In order to adjust the cutting operation in the very
best way to material both speed and sword
pressure can be adjusted..
The downward speed of the sword are adjusted
by the joystick during cutting. Adjusting the screw
B maximum movement level can be reached.
The swoord pressure can be adjusted by the
screw marked A
Start with low pressure and adjust upwards. Too
low pressure might stop the saw bar from moving
to the «bottom» level.
Too much pressure can harm the motors pull
ability and engage the safety valve .
Rotating the screw into the machine the pressure
drops.
.
Speed output conveyor
The speed is adjusted with an adjustment wheel
fitted on the adjustment block for this at letter A
as illustrated.
Select a speed that suits the purpose –depends
on the desired throwing length and container to
receive the wood. Avoid that the wheel bites-
locks into the aluminium.. It is adviced to loosen
the wheel when the machine is not used.
Hydraulic knife lift
The splitting knife H is adjusted up H and down I
with the lever equipped for this purpose
In order to change knife J, the lever is moved to
the top position (H). In this position, release the
locking pin keeping the knife in position and lift
out
This is valid for VM370X-model

20
Manual knife lift
The splitting knife J is up- and downwards
adjusted by pushing the handle I to the left or
right.
Release the locking pin keeping the knife in
position and lift out
Cutting
The lever for operating cutting and operation of
the feeding conveyor forwards and backwards
(E) has several functions:
The saw chain is hydraulically operated and
starts when the lever is moved towards (D).
The lever also releases the splitting function
when it is moved towards (B) as illustrated.
Thin wood material that is not to be split
When cutting thin wood materials, you may cut
several continuous lengths and let them fall into
the splitting cradle without activating the splitting
piston. This makes for a far faster cycle.
The splitting function is always released by
moving the cutting lever to position B.
Filling saw chain oil
The processor has a separate container Afor
chain oil.
The chain is greased at every cut movement and
it is very important to supply oil before the
container is empty. Regular saw chain oil for
chainsaw use to be applied..