Avantco A424552 User manual

Hydraulic boom
2018 1
Operator's Manual for Attachment
Hydraulic boom
Product number:
Hydraulic boom
A424552
English
A431453 2018 1 EN 2018-
www.avanttecno.com

Hydraulic boom 2018 1

Hydraulic boom 2018 1
CONTENTS
1. FOREWORD ............................................................................................................................................4
Warning symbols used in this manual ............................................................................................................................... 5
2. DESIGNED PURPOSE OF USE.............................................................................................................6
3. SAFETY INSTRUCTIONS FOR USING THE ATTACHMENT........................................................7
4. TECHNICAL SPECIFICATIONS ..........................................................................................................10
4.1 Outreach ................................................................................................................................................................. 10
4.2 Safety labels and main components of the attachment.................................................................................. 11
5. ASSEMBLING THE ATTACHMENT....................................................................................................13
5.1 Connecting and disconnecting hydraulic hoses............................................................................................... 14
6. INSTRUCTIONS FOR USE....................................................................................................................16
6.1 Checks before use................................................................................................................................................. 17
6.2 Using the hydraulic boom.................................................................................................................................... 18
6.3 Collision protection.............................................................................................................................................. 20
6.4 Warning beacon..................................................................................................................................................... 21
6.5 Working on uneven ground................................................................................................................................ 21
6.6 Transport position ................................................................................................................................................ 21
6.7 Extra weights (optional extra) ............................................................................................................................ 22
6.8 Adjustments............................................................................................................................................................ 23
6.9 Uncoupling and storage........................................................................................................................................ 24
6.9.1 Storage............................................................................................................................................................. 24
6.9.2 Storage with flail mower.............................................................................................................................. 25
7. MAINTENANCE AND SERVICE ..........................................................................................................26
7.1 Inspection of hydraulic components.................................................................................................................. 26
7.2 Cleaning the attachment ...................................................................................................................................... 27
7.3 Lubrication .............................................................................................................................................................. 27
7.4 Inspection of metal structures............................................................................................................................ 27
8. WARRANTY TERMS..............................................................................................................................28

4 (30)
1. Foreword
Avant Tecno Oy would like to thank you for your purchase of this attachment for your Avant loader. It has
been designed and manufactured based on years of experience on product development and manufacturing.
By familiarising yourself with this manual and following the instructions, you ascertain your safety and ensure
the reliable operation and long service life of the equipment. Read the instructions carefully before starting to
use the equipment or performing maintenance.
The purpose of this manual is to help you to:
operate the equipment in a safe and efficient manner
observe and prevent any hazardous situations
keep the equipment intact and ensure a long service life
With these instructions, even an inexperienced user can use the attachment and loader safely. The manual
includes important instructions for experienced AVANT operators as well. Ensure that all persons using the
loader have received proper guidance and familiarised themselves with the manual of the loader, each
attachment that are used, and all safety instructions before using the equipment. Using the equipment for
other purposes or use in any other way than described in this manual is prohibited. Keep this manual at hand
throughout the service life of the equipment. If you sell or transfer the equipment, be sure to hand over this
manual to the new owner. If the manual is lost or damaged, you can request a new one from your Avant
dealer or from the manufacturer.
In addition to the safety instructions included in this manual, you must observe all occupational safety
regulations, local laws, and other regulations concerning the use of the equipment. Particularly the regulations
concerning the use of the equipment on public road areas must be observed. Contact your Avant dealer for
more information about local requirements before you operate the loader on road areas.
Contact your local AVANT dealer for any questions, service, spare parts or about any problems that may
occur with the operation of your machine.
This manual contains the original instructions in English. Due to continuous product development some of the
details shown in this manual may differ from your equipment. Pictures may also depict optional equipment or
features that are not currently available. We reserve the right to change the contents of the manual without
notification. Copyright © 2018 Avant Tecno Oy. All rights reserved.

5 (30)
.
Warning symbols used in this manual
The following warning symbols are used throughout this manual. They indicate factors that must be taken into
account to reduce the risk of personal injury or damage to property:
WARNING: SAFETY ALERT SYMBOL
This symbol means: “Warning, be alert! Your safety is involved!”
Carefully read the message that follows, it warns of an immediate hazard
that could cause serious personal injury.
The safety alert symbol by itself and with related safety statement
indicates important safety messages throughout this Manual. It is used to
draw attention to instructions involving your personal safety or the safety
of others. When you see this symbol, be alert, your safety is involved,
carefully read the message that follows, and inform other operators.
DANGER:
This signal word indicates a hazardous situation which, if not avoided, will cause
death or serious injury.
WARNING:
This signal word indicates a potentially hazardous situation which, if not avoided,
could cause serious injury or death.
CAUTION:
This signal word is used when minor injury could result if the instructions are not
followed properly.
This signal word indicates information about the correct operation and maintenance
of the equipment.
Failure to observe the instructions accompanying the symbol can lead to equipment
breakdown or other property damage.

6 (30)
2. Designed purpose of use
The AVANT Hydraulic boom is an attachment suitable for use with AVANT multi purpose loaders shown in
Table 1. The hydraulic boom is intended to be used with a suitable attachment, when bigger outreach than
usually is necessary.
The hydraulic boom is equipped with S30 quick coupling, which allows the boom to be used with an
attachment equipped with similar counterpart. The attachment with hydraulic boom can reach to places where
it is not possible to drive with the machine. This makes working on hard-to-reach areas safe and easy.
Depending on the attachment, the visibility is usually excellent to the whole working area. The operator can
look into the driving direction when processing the terrain.
It is recommended that the Avant is equipped with a cab (L, LX or DLX) in order to protect the driver against
flying debris. When mounted on Avant 600 series, the extra side weights (A49063) are also recommended for
better stability.
The hydraulic boom is not designed for any other use than what is specified in this manual and must not be
used for any other purposes than intended.
The attachment has been designed to require as little maintenance as possible. The operator can perform
regular maintenance tasks. All repair work can’t be performed by the operator, and demanding repair and
maintenance operations are to be left for professional maintenance. All maintenance work must be done using
proper safety equipment. Spare parts must be identical with original specifications, which can be ensured by
using only original spare parts. A separate spare parts catalogue may be available, consult your Avant dealer.
Familiarise yourself with the manual's instructions regarding service and maintenance. Please contact your
AVANT retailer if you have additional questions about the operation or maintenance of the equipment, or if
you require spare parts or maintenance services.
Table 1 - Hydraulic boom - Compatibility with Avant loaders
Model
220
225
225LPG
313S
320S
420
423
520
523
R20
525LPG
R28
528
530
630
R35
635
640
745
750
755i
760i
e5
e6
A424552 - - - - ••-
It is recommended to use the attachment only with loaders marked with •in Table 1. When using with models
marked with (•), full performance may not be achieved. Additional counterweights may also be required. For
compatibility with a model not shown in table, contact your Avant dealer.

7 (30)
3. Safety instructions for using the attachment
Please bear in mind that safety is the result of several factors. The loader-attachment combination is highly
powerful and improper or careless use or maintenance may cause serious personal injury or property
damage. Due to this, all operators must carefully familiarise themselves about correct use and the operator's
manuals of both the loader and the attachment before starting operation. Do not use the attachment if you
have not completely familiarised yourself with its operation and the related hazards.
DANGER
Misuse, careless use, or using an attachment that is in poor condition, may
cause risk of serious injuries.
Familiarise yourself with the controls of the loader,
correct coupling procedure, and the correct way to operate the attachment at a safe
area. Study especially how to stop the equipment in a safe manner. Read all safety
precautions carefully.
Read all safety instructions carefully before handling the attachment
WARNING
When attaching an attachment to the loader, ensure that the locking pins of the
loader's quick attach plate are in the lower position and that they have locked
the attachment to the loader. Never lift or move an unlocked attachment.

Make sure Flail mower or other attachment is securely connected to the hydraulic
boom. Always refer also to the operator's manual of the separate attachment.
The hydraulic boom and any attachment coupled to it are designed to be used by one
operator at a time. Do not let others near the danger area of the equipment when it is
in use.

Always transport the attachment as low as possible to keep the centre of gravity low,
and keep both the side extensi
on telescopic boom and the telescopic boom of the
loader completely retracted during driving.
Operate the controls of the loader in a slow and calm manner. Be careful when lifting
load to high level or lifting load from high. Avoid sudden changes in spe
ed or
direction to maintain balance of the loader especially when handling heavy loads.
Drive slowly and carefully especially on inclined terrain or slippery surfaces.
Keep the loader articulation in straight position when handling heavy loads. When
turning the articulation, the loader may tilt forward
Make sure that overhead clearance is sufficient. Hitting an overhead obstacle may
cause the loader to tip over. Keep a safe distance from electric cables, lamps, or
other electric systems; hitting live parts may cause electric shock.
Never leave the driver’s seat when the attachment is running or if the auxiliary
hydraulics control lever is locked on. The rotating parts of the attachment keep
rotating for a short period after the hydraulic supply has
been shut off. Wait until all
parts have stopped completely before leaving the driver's seat.
Do not leave the driver’s seat when the loader boom is lifted. Going under a raised
attachment or loader boom is dangerous. Always remember that the boom may lower
due to loss of stability, mechanical fault, or if another person operates the controls of
the loader.
Hazard of entanglement - Never wear loose clothes, such as loose shoelaces, or
long scarves when working with the attachment. Keep hands and fe
et away from
moving components.

8 (30)
Use the attachment only for its intended use and only with original tools and spare
parts.
When unlocking and dismounting the attachment off from the loader, ensure that it is
secured against accidental movement. To s
ecure the attachment from tipping over
lower it firmly on the ground and disconnect only on level surface. Ensure the
attachment is properly supported during storage. Never climb on the attachment.
Make sure that the attachment is properly supported before performing any
inspections, maintenance, or adjustments. If necessary, secure the attachment with
suitable lifting equipment, or lower it on firm blocks of wood, for example.
Always transport the hydraulic boom as low and as close to the machine as possible
to keep the centre of gravity low. Keep the hydraulic boom completely retracted
during transport. On slippery surfaces drive slowly and deliberately. Operate the
controls of the loader slowly and calmly especially on inclined terrain.
Shut down the loader and place the attachment to a safe position as shown in Safe
stopping procedure before any cleaning, maintenance, or adjustments.
Pay attention to the surroundings and any other persons and machines moving in the
vicinity. Pay attention to t
he contours of the terrain and other hazards, such as
branches and trees that can reach to the driver's area, loose rocks, and slippery
surfaces.
Make sure to use only an attachment that is in good condition. Do not modify the
attachment in any way that could affect its safety.
Use the attachment only for its intended purpose. Other use may create unnecessary
safety risks, and the equipment may get damaged.
Make sure that the loader is equipped with necessary safety components, and that
they are in
working condition. Seat belt must be used. If there are specific hazards
related to the operating area, use appropriate safety equipment.
Also read the safety instructions and correct use of the loader from the operator's
manual of the loader.
DANGER
Wrong, improper, or careless use of the attachment causes serious risk of severe
injuries or death.
Familiarise yourself with the controls of the loader in a safe area. Pay
particular attention to the safe stopping of the attachment and the loader; fo
llow the safe
stopping procedure shown in this manual before leaving the driver's seat.
WARNING
Risk of crushing -
Never allow anyone to get under a
lifted attachment or loader boom.
Keep in mind that the
loader boom can be lowered or tilted even if
the engine has
been shut down (crushing hazard). The loader is not intended
to be left to keep a load elevated for longer periods. Always
lower the attachment to a safe position before leaving the
driver's seat.
WARNING

9 (30)
Remember to wear proper personal protective equipment:

The noise level at the driver's seat may exceed 85 dB(A) depending on loader
model and operating cycle. Extended exposure to loud noise can cause
hearing impairment. Wear hearing protection while working with the loader.
Wear protective gloves.
Wear safety boots whenever working with the loader.
Wear safety glasses when handling hydraulic components.
. ..
Safe stopping of the attachment, before going near the attachment:
WARNING
Always stop the attachment following safe
stopping procedure before leaving
the driver's seat.
Safe stopping procedure prevents all unintentional movements of
the attachment. Note that the loader boom can move down even if the engine of the
loader is turned off. Safe stopping procedure:
Lower the boom and the attachment on the ground.
Shut down the loader engine and lock the parking brake.

Release residual pressure from the hydraulic system; move all hydraulic control
levers to their extreme positions a couple of times.
Prevent starting of the machine, remove ignition key.

10 (30)
4. Technical specifications
Table 2 - Hydraulic boom - Attachment specifications
Product number A424552
Width (boom retracted): 1 870 mm
Total width (boom extended): 2850 mm
Weight: 290 kg
Compatible Avant loaders: See Table 1
Options:
Additional weights A49063 / 90 kg, max 2 pcs
. ..
4.1 Outreach
The outreach diagram below is illustrated with the hydraulic boom and flail mower. Naturally, the outreach
depends on the attachment in use, therefore the diagram should be used as an estimation. See additional
instructions from the corresponding attachment manual.

11 (30)
.
4.2 Safety labels and main components of the attachment
Listed below are the labels and markings on the attachment. They must be visible and readable on the
equipment. Replace any unclear or missing label. New labels are available via your retailer or contact
information provided on the cover.
WARNING
Make sure all warning decals are readable.
The warning labels contain important
safety information and they help
to identify and remember the hazards related to the
equipment. Replace damaged or missing warning labels with new ones.
Attachment identification plate
A424552
A46771 A46772 A46803
To apply a new label: Clean the surface thoroughly to remove all grease. Allow it to dry completely. Peel off
the protective film of the label and press firmly to apply. Take care not to touch the glue of the label.

12 (30)
.
Table 3 - Decal locations and warning messages
Decal Warning message
1 A36771 Misuse hazard - Read instructions before
use.
2 A36772
Crushing hazard - Do not go under a
raised attachment; stay away from raised
equipment.
3 A36803
Pinching and cutting hazard, keep clear
of moving parts, do not leave the
equipment running. Operate the
attachment only from the driver’s seat.
4 A424552 Attachment identification plate
. ..
. ..
Table 4 - Hydraulic boom - Main components
1 Multiconnector holder
2 Multiconnector
3 Quick attach plate
4 S30 quick coupling
5 Extension cylinder
6 Tilting cylinder
7 Support
8 Swivel cylinder for safety function
9 Warning light and switch for warning light

13 (30)
5. Assembling the attachment
Attaching the attachment to the loader is quick and easy, but it must be done carefully. The attachment is
mounted to the loader boom by using the quick attach plate on the loader boom and the counterpart on the
attachment.
If the attachment is not locked to the loader, it may detach from the loader and cause a hazardous situation.
The loader must not be driven and the boom must never be lifted when the attachment has not been locked.
To prevent hazardous situations, always follow the coupling procedure shown below. Also remember the
safety instructions shown in this manual. The attachment is mounted to the loader as follows:
WARNING
Crushing risk - Make sure that an unlocked attachment will not move or fall over.
Do not stay in the area between the attachment and the loader. Mount the attachment
only on level surface.
Never move or lift an attachment that has not been locked.
Avant quick coupling system:
Step 1:

Lift the quick attach plate locking pins up and turn them backwards into the slot
so that they are locked in the upper position.
If your loader is equipped with a hydraulic attachment l
ocking system, see
additional instructions about the use of the locking system from the relevant
manuals.

Ensure that the hydraulic hoses and the electric harness are not in the way
during installation.
Step 2:
Turn the quick attach plate hydraulically to an obliquely forward position.

Drive the loader onto the attachment. If your loader is equipped with a
telescopic boom, you can utilise this.

Align the upper pins of the loader’s quick coupling plate so that they are under
the corresponding brackets of the attachment.
Step 3:
Lift the boom slightly –
pull the boom control lever backward to raise the
attachment off the ground.

Turn the boom control lever left to turn the bottom section of the quick attach
plate onto the attachment.
Lock the locking pins manually or lock the hydraulic locking.
Always check the locking of both locking pins.

14 (30)
WARNING
WARNING: Risk of crushing - Avoid tipping over the attachment.
Excessive tilting or lifting of an unlocked attachment increases the risk of tippin
g the
attachment over. Do not use the automatic locking of the locking pins when the
attachment is lifted more than one meter from the ground. If the locking pins do not
return to the normal position when tilting, do not tilt or raise the attachment any mo
re.
Lower the attachment on the ground and secure the locking manually.
WARNING
Risk of falling objects -
Prevent dropping of
attachment.
An attachment that has not been completely locked to the
loader may fall on the boom or towards the operator, o
r
fall under the loader during driving, causing loss of
control of the loader. Never move or lift an attachment
that has not been locked. Before moving or lifting the
attachment, make sure that the locking pins are in the
lower position and come through th
e fasteners on the
attachment on both sides.
WARNING
Make sure the loader is compatible with the attachment.
Stability of the loader,
possible overload of the attachment, and compatibility of loader control systems must be
ensured in additi
on to mechanical compatibility of the attachment. If you use the
attachment with a loader that is not fit to be used with the attachment model you have,
risks include tipping over, damage to attachment due to overload, and risks related to
uncontrolled mot
ion of attachment and its parts. If your loader is not listed in Table 1 on
page , ask your Avant dealer before using this attachment.
5.1 Connecting and disconnecting hydraulic hoses
On Avant loaders the hydraulic hoses are connected using the multi connector system. If you have an Avant
300-700 series loader with the conventional quick couplers and wish to change to the multi connector system,
contact your Avant dealer or service point for instructions or installation services.
WARNING
Risk of movement of the attachment and ejection of hydraulic oil -
Never connect
or disconnect quick couplings or other hydraulic components while the control
lever of the auxiliary hydraulics control lever is locked on or if the system is
pressurized. Connecting or disc
onnecting the hydraulic couplings while the system is
pressurized may lead to unintended movements of the attachment, or ejection of high-
pressure fluid, which can cause serious injuries or burns. Follow safe stopping procedure
before disconnecting hydraulics.

15 (30)
Keep all fittings as clean as possible; use the protective caps on both the attachment and
the loader. Dirt, ice, etc. may make using the fittings significantly more difficult. Never
leave the hoses hanging on the ground; place the couplings on
to the holder on the
attachment.
Connecting the multiconnector system:
1.
Align the pins of the attachment connector with corresponding
holes of the loader connector. The multiconnector will not connect
if the attachment connector is upside down.
2. Conne
ct and lock the multiconnector by turning the lever towards
the loader.
The lever should move easily all the way to its locking position. If the lever does not slide smoothly, check the
alignment and position of the connector and clean the connectors. Also shut down the loader and release the
residual hydraulic pressure.
To disconnect the multiconnector system:
Before disconnecting put the attachment down on a solid and even
surface.
1. Switch off the auxiliary hydraulics of the loader.
2. While pushing un
lock button, turn the lever to disconnect the
connector.
3.
After ending operation put the multiconnector on its holder on the
attachment.
Disconnecting hydraulic hoses:
Before disconnecting the fittings, lower the attachment to safe position on solid and level surface. Turn the
control lever of the auxiliary hydraulics to its neutral position.
When uncoupling the attachment, always disconnect the hydraulic couplings before
unlocking the quick attach plate, to prevent hose damage and any oil spills. Re
install the
protective caps on the fittings to prevent impurities from entering the hydraulic system.
Releasing residual hydraulic pressure:
In case residual pressure is left in the hydraulic system of the attachment, it is often possible to disconnect the
hydraulic couplings, but it may be difficult to connect them the next time. If the fittings will not connect, the
residual pressure must be released by turning the auxiliary hydraulics control lever of the loader, when the
engine is turned off. To make sure that there will not be residual pressure in the hydraulic system of the
attachment, shut down the loader engine and move the auxiliary hydraulics control lever of the loader back
and forth before disconnecting the couplings.

16 (30)
6. Instructions for use
Check the attachment and the operating environment once more before starting to work, and that all obstacles
have been removed from the operating area. Quick inspection of the equipment and the operating area before
use are parts of ensuring safety and the best performance of the equipment.
WARNING
Risk of crushing -
Never allow anyone to get under a
lifted attachment or loader boom.
Keep in mind that the
loader boom can be lowered or tilted even if the engine has
been shut down (crushing hazard). The load
er is not intended
to be left to keep a load elevated for longer periods. Always
lower the attachment to a safe position before leaving the
driver's seat.
DANGER
Risk of crushing or entanglement from contact with moving parts -
Never leave the
equipment unattended while the engine is running. Follow safe stopping procedure.
WARNING
Risk of tipping over - Avoid overload.
Loader can tip over
when handling too heavy loads, or because of dynamic
movements caused by driving with and handling of a
heavy
load. Do not extend the telescopic boom when the load
approaches the lifting capacity of the loader, or when the
loader boom is in horizontal position. When you notice that
the rear wheels of the loader are about to lift from the ground,
or if the load indicator of the loader (if fitted) signals:
Lower the load calmly and retract the telescopic boom
Avoid sudden changes in speed or direction whenever load is lifted
Use additional counterweights as needed

17 (30)
.
6.1 Checks before use
Remove or mark visibly all obstacles, such as trash, large tree branches or stones, from the working
area before operation. Check the area for possible hidden ditches, manholes, or other dangerous
areas. Remember that tall grass can hide obstacles.
Drive carefully on uneven terrain and note the effect of heavy load at the front of the loader to the
stability and handling of the loader.
Practise the use of the attachment and the controls of the loader in a safe area. If you are unfamiliar
with the particular loader model, it is recommended to practise its use without any attachments.
Check the attachment you are planning to use with hydraulic boom according to separate specific
instructions before operating the attachment. Make sure that there are no broken components.
Use only when all pins and hydraulic fittings are locked and secured in place. Make sure that the
hydraulic boom S30 quick coupling and attachment counterpart are in good condition.
Ensure that bystanders are at a safe distance when operating the equipment. Do not let anyone to
enter danger area of the boom or to stay directly in front of the loader. Also make sure that it is safe to
reverse with the loader. Never assume that bystanders will remain where you last saw them;
especially children are often attracted to the moving equipment.
Check the general condition of the attachment and the loader, and check for possible hydraulic oil
leaks. The attachment must not be used, if there is a fault in the hydraulic system of the loader or the
attachment. Refer to Chapter 7 for maintenance instructions.
Operate the attachment and the controls of the loader only when seated on the driver’s seat. Ensure
that the loader and the attachment are used in a safe manner and as intended. Do not allow children
to operate the equipment.
Never operate the loader or attachments while under the influence of alcohol, drugs, medication that
may impair judgement or cause drowsiness, or if not otherwise medically fit to operate the equipment.
Remember correct working methods and avoid leaving the driver’s seat unnecessarily.
WARNING
Avoid running over persons - Check surroundings before driving.
Always look in the
direction the loader is moving. Before reversing, always ensure that bystanders,
especially children, are at a safe distance to avoid back-over accidents.
WARNING
Risk of tipping over -
Avoid overload and keep heavy load close to the machine.
Keep loads close to the ground whenever driving, especially during turns and
uneven terrain. Pay attention that a heavy load o
r long distance between the loader and
the centre of gravity of the load will affect the balance and handling of the loader. The use
of additional counterweights is recommended especially when operating smaller loader
models. For 200-series loader the whee
l weights are recommended. With heavy loads,
the telescopic boom must be kept retracted while moving with the loader. Always wear
seat belt.

18 (30)
WARNING
Risk of injuries related to sudden stop -
Drive slow and always stay alert for
possible obstacles. F
or the safety of the operator, the hydraulic boom is equipped with
hydraulic safety function to reduce the risk of sudden stopping of the loader and the
possibility of injuries that could follow. However, the existence of the safety features will
not repla
ce operator's responsibility. Careful and cautious operating are essential for
safety. Any safety feature by itself will not guarantee safe use of the equipment. The
performance of the safety features may be hindered in certain conditions, such as debris
and dirt, or when reversing with the loader.
.
6.2 Using the hydraulic boom
Before starting the attachment:
Set and adjust the attachment to correct operating position before starting the operation.
Starting the attachment:
Move the auxiliary hydrauli
cs control lever of the loader
towards its locking position to start operating the boom
hydraulics.
Stop by releasing the lever to neutral position.
The boom and its attachment functions are controlled with the
attachment control switch pack as follows:
1. Attachment start/stop
2.
Push the button left to retract the boom, and right to
extend the boom.
3.
Push the button left to lift the attachment, and right to
lower the attachment.
Release the lever to its neutral position whenever not
operating boom hydraulics.
Reverse direction of the auxiliary hydraulics control has no
effect.

19 (30)
WARNING
Collision risk - Check the operating area before using the equipment.
Running into
an obstacle may stop the machine suddenly and unexpectedly causing injuries from
impact to head and body, regardless of the collision protection system or other safety
systems.
Drive slowly and pay attention to operating area at all times.

Make sure that there are no hidden obstacles that may be covered by grass, for
example.
Mark visi
bly any potential obstructions beforehand as far as practical so that
collisions can be avoided.

Operate equipment only at well lit areas or make sure the loader is equipped with
sufficient lights.
The collision protection system improve safety only when driving forward.
Always wear seat belt.
Operate the controls of the loader and its attachments in a careful and smooth manner, and avoid sharp turns
and sudden changes in speed or direction whenever using the hydraulic boom and its attachment.
The figure above is for reference only.
WARNING
Careless operation can injure you or bystanders -
Keep the loader under control at
all times.
Operating a powerful mower requires the full attention of the operator. Do not
perform distractive actions while mowing, such as using mobile devices.

20 (30)
6.3 Collision protection
Hydraulic safety function
The hydraulic boom is also equipped with a safety function. When hitting an obstacle during operation, the
boom swings automatically backwards. Then the boom and attachment is lifted up. When the obstacle has
been avoided, the attachment is lowered again and the boom returns to its original position automatically.
The attachment also floats upwards, if necessary, but does not return to its original position automatically.
Adjusting downwards is only possible by means of the pushbutton (3) of the attachment control switch pack.
The hydraulic safety function is adjusted for the use of the flail mower. With lighter attachments it may be
useful to adjust the system to allow the boom tilt back easier. Contact Avant service for correct adjustment
settings.
Recommended operating speed and maximum allowed oil flow:
Adjust engine RPM so that the loader's auxiliary hydraulic flow is within the specified range for the
attachment in question. Too little flow will not rotate the attachment fast enough for good results.
Correct flow ensures that the blades rotate fast enough for a good finish. However, too high setting will
result in excess vibration and noise, and the attachment may get damaged. Generally, only the 1-
pump setting should be used (on applicable loaders).
Adjust drive speed according to terrain and other conditions to ensure good result. Monitor the loading
and rotating speed of the attachment by listening to changes in its noise.
Operate the attachment keeping the hydraulic flow within recommended range. Never
exceed maximum allowed input of hydraulic energy.
DANGER
Risk of serious personal injuries - Never leave the equipment running unattended.
Start the
attachment only when it is ready to be used. Do not go near the equipment
when another person operates the controls of the loader.