DUUN VF240 User manual

VF240 Instruction manual
Serial number: from 140001
Duun Industrier as
7630 Åsen, Norway
www.duun.no

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Congratulations on your Duun VF240 snow blower.
All Duun tractor operated machines have been engineered and tested in close cooperation with
representative users to produce functionally safe and user-friendly machines.
Please read this instruction manual before using the machine.
Good luck!
Machine identification
Serial number and manufacturer are indicated on badge (A).
Register serial number and delivery time as indicated.
Always specify serial number when requesting service for the machine.
The machine is CE-marked (B). This marking confirms that the machine has been manufactured in
conformity with EU Directive Machinery.
Serial number
Time of delivery (month-year)

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CONTENT
MACHINE INDETIFICATION 2
SAFETY 4
WARRANTY TERMS 7
TECHNICAL DATA 8
PREPARATION FOR USE 11
CONNECTION 12
SERVICE AND MAINTENANCE 14
SHEAR –BOLT COUPLINGS 15
OPERATIONAL RISKS 15
PRACTICAL USE 15
DISCONNECTION 15
DECLARATION OF COMFORMITY 16

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SAFETY
All operators, mechanics and the owner must always work carefully with agricultural machinery. Read
and observe safety instructions in this instruction book.
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.
1. 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.
2. Safety of the surroundings
Be very careful when other people or animals are near the
machine or tractor. Never start the machine when there are
people or animals close to it, also never stand between the
tractor wheels and the machine!
3. Safe connection and use
Do not allow anyone to stay between the machine and the
tractor when the machine is connected to the tractor. The
same applies during the use of the machine. Make sure that
the connection is carried out in a safe manner. By
automatically connecting with a triangle or HMV, the
hydraulic hoses are connected before the start of work.
Connecting with draw bolts, secure the drawbar connection
with lunch pins before the hydraulic connection and start
operation.
4. 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.

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5. Power transmission shaft
The tractor is disengaged and the handbrake is applied
before the shaft is connected to the tractor's PTO.
The maximum power output speed is 540 rpm. 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 rotate. The covers must be lubricated
according to the specified interval.
6. Rotating parts –high risk of injury
The rotating parts of the machine can cause major damage
to body parts that come into contact with them. Do not allow
anybody to stay in the work area when a machine is in
operation.
7. Hydraulic high fluid pressure
Be careful when you work with hydraulics. Wear eye
protection and gloves. Hydraulic oil under high pressure may
penetrate the skin and cause serious infections. See a
doctor if you have sustained an injury. Make sure no one is
close by when performing hydraulic functions.
8. Rotating parts –risk of crushing
Pay special attention to clamping risk at points marked for
this.
9.Clamping risk when adjusting
When adjusting the support wheels, make sure that you do
not stand with your feet under the wear steel.

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Always lower the machine to safety rest at ground level when it needs to be parked.
Never work under a lifted device unless it is mechanically secured against coming down.
Before startup after servicing make sure all tools have been removed and brought into place.
Do not work in clothing that can be retracted into moving parts of the machine (e.g. scarves, wide
coats).
Wear hearing protection if the machine has annoying or damaging noise levels.
Before the machine is raised or lowered, make sure that no person is near or touching the machine.
If warning signs are removed during repairs or service, new signs should be installed
immediately!

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Warranty terms
Duun TFP240 has 12 months guarantee against defects in materials and workmanship.
Parts that are not originally manufactured by Duun Industrier as, for example, wheels, hydraulic parts,
etc. are subject to these suppliers’ guarantees and terms.
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 based on the guarantee.
In this context, the following information must be recorded:
•Product name
•The product’s serial no. (see the machine identification)
•Date of sale
•The product owner’s 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 as 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.
Duun Industrier as reserves the right to modify the design and specifications and/or make alterations
and improvements without notification.
What is not included in 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 uses that are not in
accordance with the instruction manual’s specifications and guidelines.

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Technical data

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Features:
VF240
Weight
640kg
Width
2400 mm
Working width with two side
extensions
2850 mm
Max length
1900 mm
Left side length
1804 mm
Right side length
1804 mm
Extend center line of the right side
1307 mm
Extend center line of the left side
1092 mm
Three-point linkage
670 mm
Working height of chassis
843 mm
Max height of outlet
2315 mm
The number of blades in the ejector
fan
4
Diameter of fan
800 mm
Power requirement of PTO
80 hk/60kw
Speed of PTO shaft
540
Wear steel of right side dim
10x170x1570mm
Wear steel of left side dim
10x170x1436mm
Hole spacing for wear steel
305mm
Space for road service steel 200mm
wide
Yes
Asseccories:
Side extension 1m right 1251173
Yes
Side extension 1m left 1251180
Yes
Side extension 1,6m right 1251174
Yes
Breakdown flap 1251119
Yes
Support wheel pair 1252017
Yes
Coupling Triangle 1252637
Yes
Coupling HMV 1252638
Wear steel side extension right and
left 12514005
Yes
Double wear steel right 12514006
Yes
Double wear steel left 12514006
Yes
Hydraulic control of spout flaps
1251118
Yes
Ice rake skid pad 125309014
Yes

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Transportation and management before use
Snow blower housing is always lifted with strap
attachments as illustrated. Please note that a
single snowblower weighs is approx. 640 kg.
Use lifting equipment suitable for this weight!!
Installation of the breakdown flap (1251119)
additional equipment
1. Locking screw M10x25
2. Body washer 11/35x3
3. Bearing washer
4. Locking nut M10
5. Screw M10x45
6. Bearing sleeve on spout
7. Strut for breakdown flap
8. Breakdown flap

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Preparation for use
Adjustment of skid pads
The snow blower is placed on a level surface and the skid pads are adjusted so that the wear steels
on both sides + the infeed steel in front of the fan housing have clearance above ground level. Too
small distance here will cause abnormal wear on both wear steel and feed steel.
Power transmission shafts
Make sure that the PTO shaft is of sufficient length. After any length adjustment, the profile pipes in
the shaft must overlap each other by half the pipe length. Any cutting of the shaft is carried out
accordance to the instructions for this –the cut point is chamfered inside and out, and the profile
tubes are lubricated with grease. Too short a telescopic length on the shaft entails a risk of
overloading the tractor's PTO and the snow blower's bearings.
Please lubricate the power transmission shaft before use.
The shear bolt coupling on the shaft is mounted against the implement. The coupling has a capacity
of 4180 nm and in the event of a break in this, a hexagonal screw dim 12 mm qual 8.8 must be used
as a breaking pin. The locking chains for the protective covers must always be attached to suitable
fasteners to prevent the covers from rotating.
The power transmission shafts are maintained and used according to the attached instruction
manual.
Save control of greasing (lubrication)
Check that the warehouses (front and back) are lubricated. Lack of lubrication entails a risk of
breakdown. Also, be careful not to "over-lubricate" the bearings as this entails the risk of heat build-
up and overheating in the bearing itself. In the case of too little lubrication, water can penetrate
(infiltrate) the bearings.
Lubrication of ball bearing
Check that this is lubricated and make sure it is lubricated before use if this is not the case. Too little
lubrication causes abnormal wear on the gears and chain.
Lubrication of feeding blade
Check that this is lubricated and make sure it is lubricated before use if this is not the case. Too little
lubrication causes abnormal wear on the gears and chain.
Protection of hydraulic hoses
Check the hose connections and that they are not stretched or cut during use. Tighten loose hose
connections and secure/fasten the advance of the fittings. Failure to secure hydraulic hoses can lead
to leaks and consequential damage to tractors and components.

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Connection
Stabilization struts/support struts on tractors must be used.
This is to ensure that the snow blower does not get uncontrolled lateral movements while driving –
i.e. goes in the same direction as the tractor all the times.
Make sure no one is standing between the tractor and the machine during connection. Back the
tractor up to the snow blower and stop the engine before the lifting arms are mounted in the three-
point linkage, or is automatically connected to quick coupling HMV or triangle.
Hydraulic hoses installation. At the same time, check that all hoses are tight and undamaged before
starting hydraulic functions. When the tractor engine is stopped, you should ensure that there is no
pressure in the hoses by activating the tractor's hydraulic valves.
Pay special attention to the dangers of hydraulic oil under pressure.
Install the power transmission shaft on the PTO with the shear - bolt coupling against the snow
blower. A safety chain is attached to the snow blower to prevent the rotation of protective covers.
The power transmission shaft must always have a shear bolt coupling max 4180 nm.
Make sure that the protective covers for the power transmission shaft are undamaged and replace
them if they are damaged.
Before connecting the power transmission shaft, secure the following points.
Make sure that the shaft's protective tubes are undamaged and that the two halves of the shaft fit
freely into each other. The length of the power transmission shafts must be adjusted carefully, if it is
too long it can damage the bearing in the tractor's PTO or the snow blower’s bearings. Also ensure
good lubrication of the profile pipes. See also the instruction manual for the power transmission shaft.
Check that the power transmission shaft can be rotated by hand to ensure that it is not buckling
anywhere.
Check that the power transmission shaft will not be tensioned when the machine is lifted to max. or
min. height. Driving on very hilly relief, a rear-mounted snow blower can work lower or higher than the
tractor itself. Please also note that the angle of the axle can be too large when using very short axles
- contact the supplier - importer.

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Service and maintenance
Before cleaning, lubricating, repairing or adjusting the machine, stop the engine and activate the
handbrake, and remove the key during work.
Pay special attention to safety during maintenance work, park the machine in according with
specified safety rules.
Inspection after screw connections
Screws - nuts - fittings and bolts on the machine should be re-tensioned after two hours of operation.
All moving parts should be lubricated with grease.
The ejector spout's swivel is exposed to both cold and heavy wear - therefore use cold-resistant
grease that can handle up to -40 degrees. Points 4 and 5.
Wear steel and skid pads are exposed to heavy wear - check and carry out the replacement or
reversal of wear steel before damage occurs to the hull itself and mounting brackets.
Replacement of feeder blade –replacing the feeder blade, the opposite blade must be replaced
also at the same time to stop vibrations.
To extend the life of the machine, cleaning after use is recommended. After the season, use water for
cleaning.
Remove snow after use so that icing does not cause any problems at start-up later.
Do not flush water directly into the bearing. For long-term storage, it is recommended to lubricate the
machine in acid-free oil.
Interval of lubrication and grease quality
1. Infeed wing
Interval: Every 10. operating hours.
2. Bearings for the main axle in front of fan
Interval: Monthly and when parking in the spring (approx. every 200 hours).
Avoid pushing in too much grease as this can cause sealing rings to squeeze out +
contribute to overheating of the entire bearing.
Recommended amount of 7-8 grams per time.
3Bearings for main axle and in rear of fan
Interval: Monthly and when parking in the spring (approx. every 200 hours).
Avoid pushing in too much grease as this can cause sealing rings to squeeze
out + contribute to overheating of the entire bearing.
The recommended amount of 7-8 grams per time.
4. Expiration spout for ball bearing
Interval: Every 50 hour.
5. Sprocket for expiration spout for ball bearing
Interval: When needed.
6. Power transmission shafts –universal joint + telescopic tube
Interval: Every 8 –10 operating hour.
Maintained according to the attached instruction manual. Please contact the supplier if this is
missing.
Grease quality: Universal grease of good quality.

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Shear - bolt couplings
Remember to lower the machine, stop the tractor's engine and disconnect the PTO before fitting a
new cutting bolt. Here are used bolts M12 qual.8.8.
Operational risks
It is the driver's responsibility not to expose himself or others to danger during the use of the snow
blower. Attention should be paid to people and animals located near the machine. Since other objects
occur in the snow (rocks and similar things), the throwing route must be set so that the draft snow
would not be danger to other road users. Since there are more objects in the snow (stones), the
ejection nozzle must be adjusted so that the ejected snow does not pose a danger to other road
users.
No one should ever stand on the machine while it is driving or moving. Protective covers must always
be on when it is used.
Practical use
The Norwegian Labor Inspection Authority has listed snow blowers among machines that must be
used with particular care and must therefore not be operated by people without documented training.
The user must have a driving license for a tractor (aged 16) and have a certificate that he has
received training in the use of the machine/tool.
The machine requires skilled operation, the user manual must be read before connecting to the
tractor and putting it into operation, even if the user had previous experience with a similar machine –
this is for user’s safety.
The top brace is adjusted so that the snow blower is parallel to the ground in working position.
Skid pads must always be used and adjusted according to the instructions in user manual.
The maximum power of PTO speed is 540 rpm. The throw length can be set by adjusting the speed.
The direct-coupled PTO must not be switched on at high rpm.
If the snow blower is pulled forward without displace the snow (punched drive shaft), you must pull
back a little before re-engaging the PTO shaft.
Driving in packed snow, it is important to keep the rpm. high from the time you enter the snow until
the fan is empty.
Disconnection
This happens in the reverse order of connection.
The tractor's PTO must be disconnected when working with the machine and the PTO shaft.
Place the machine on the even ground.
Disconnect hydraulic hoses.
Disconnect the power transmission shaft and hang it on a hook attachment.
Locking bolts for drawbars are released.
Now the machine is disconnected and can be left.

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