Avantco Leguan 50 User manual

Leguan 50 Access platform 2015 2
Operator's Manual for Attachment
Leguan 50 Access platform
Product number:
for 400 to 700 & R series loaders
A34812
www.avanttecno.com

Leguan 50 Access platform 2015 2
Figure 1 - Leguan 50 –access platform in transport configuration
Figure 2 - LEGUAN 50- access platform attached to Avant-loader

Leguan 50 Access platform 2015 2
CONTENTS
1. Foreword .........................................................................................................................................................4
2. Designed purpose of use.................................................................................................................................5
3. Safety instructions for using the attachment................................................................................................6
4. Technical specifications ................................................................................................................................10
4.1 Reach diagram ........................................................................................................................................................................11
4.2 Labels and markings..............................................................................................................................................................11
4.2.1 List of labels....................................................................................................................................................................12
4.2.2 Label locations ...............................................................................................................................................................14
5. Attaching the attachment ............................................................................................................................15
5.1 Attaching the access platform to the loader..................................................................................................................15
5.1.1 Fit rear outriggers to the loader...............................................................................................................................16
5.1.2 Lift parking support ......................................................................................................................................................17
5.1.3 Fit the supporting bracket ..........................................................................................................................................17
5.2 Connecting and disconnecting the hydraulic hoses......................................................................................................18
6. Instructions for use .......................................................................................................................................21
6.1 Checks before use ................................................................................................................................................................21
6.2 Using the access platform ...................................................................................................................................................22
6.2.1 Checking operating area and setting up the platform .........................................................................................22
6.2.2 Lifting the platform .......................................................................................................................................................23
6.3 Emergency lowering of the platform................................................................................................................................24
6.4 Ending the use of the access platform .............................................................................................................................25
7. Maintenance and Service..............................................................................................................................26
7.1 Checking hydraulic components .......................................................................................................................................26
7.2 Lubrication ..............................................................................................................................................................................27
7.3 Bubble tube level indicator .................................................................................................................................................27
7.4 Adjustments of the hydraulic system ...............................................................................................................................27
7.5 Steel structures......................................................................................................................................................................27
8. Warranty terms ............................................................................................................................................28

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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 on the basis of 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
The following warning symbols are used throughout this manual to indicate factors that must be taken into
account to reduce the risk of personal injury or damage to property:
WARNING:
This safety symbol refers to important safety information in this manual.
It warns of an immediate hazard that could cause serious personal
injury.
Read the warning text accompanying the symbol carefully and ensure
that other operators are also familiar with the warnings, since personal
safety is at stake.
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.
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. Due to continuous product development some of the details shown in this
manual may differ from your equipment. This manual contains the original instructions in English.
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. We reserve the right to change
the contents of the manual without notification.
Before putting the access platform in service, carefully read the instructions for the loader
and this manual for the access platform. This manual must be kept in the document box
of the access platform.

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2. Designed purpose of use
The AVANT Leguan 50 Access platform is an attachment suitable for use with AVANT multi purpose loaders
shown in Table 1. The LEGUAN 50 is a mobile lifting platform for indoor and outdoor use and it is designed
and manufactured to be an attachment for AVANT compact loaders. The Leguan 50 is an access platform
intended to lift persons and their equipment needed in work. The use of the Leguan 50 as a lifting crane for
lifting objects is prohibited.
The access platform can be used only with Avant multi purpose loaders. Use with other
type or brand of machinery is prohibited. The access platform can be used with 400-700
series Avant loaders, when rear support legs have been installed.
During lifting operation, the access platform is supported by its own outriggers and the extra outriggers fitted
to the rear of the loader. The platform is controlled from the lifting platform, and the AVANT loader works as
the hydraulic energy supply for the platform. The stability of the platform is based on the rigid fixing of the
attachment to the loader, and because of this, the instructions concerning installation procedures must be
followed carefully. With the emergency lowering valves the platform may be lowered in case the loader engine
shuts off.
The LEGUAN 50 has been designed and built according to international safety and access platform
standards. Regular maintenance tasks can be performed by the operator. More demanding maintenance and
repairing work must be left to qualified professionals. Appropriate protective equipment and original spare
parts must be used for the maintenance.
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 - Leguan 50 Access platform - Compatibility with Avant loaders
Avant
Leguan 50
216
218
220
220series 2
225
313S
320S
320S+
419
420
520
R20
525LPG
R28
528
630
R35
635
640
745
750
760
A34812
-
-
-




The loader has an important role for the safety of the access platform and stability. All loader models must be
fitted with rear support stands when using the access platform. For compatibility information with a model not
shown in table above, contact your Avant dealer.

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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.
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.
To ensure the safety of the access platform, the manufacturer has performed satisfactorily the static stability
tests according to section 6.1.4.2.1 in standard EN 280+A2 and the dynamic overload testing according to the
standard’s section 6.1.4.3.
Regardless of the safe design of the equipment, misuse, the lack of maintenance, or careless use may cause
serious personal injury or property damage. Due to this, you should carefully familiarise yourself with the
manuals of both the loader and the attachment before starting operation. Do not use the attachment if you
have not familiarised yourself with its operation and the hazards related to lifting of persons.
When using person-lifting equipment at work, additional safety procedures may be mandatory according to
local regulations. Such requirements may include, for example, forehand planning of lifting work and periodical
inspections of equipment used for lifting of persons. Local rules may also mandate a written permission from
the employer to operate the platform.

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.
Read all safety instructions carefully before handling the attachment
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.
The Leguan 50 Access platform is 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 the telescopic boom retracted during driving.
The maximum permitted load for the LEGUAN 50 access platform is 200 kg and the
maximum allowed number of persons is 2. Do not overload the platform.
Check the access platform, its coupling and the outriggers before use.
When attaching the platform to a loader, make sure that the locking pins are in their
lower position and that they have locked the platform to the loader. The locking pins
must be locked manually.
All use of the platform is prohibited (including transport) until the quick locking plate
has been fully locked and the locking bracket has been installed.
The access platform must be checked visually before each use. If you notice any
faults or defects, do not put the equipment into service, until all faults and defects
have been repaired.
Check that above the access platform there are no obstacles, such as building
structures, tree branches etc. Crushing hazard!
At the platform work site crushing hazard and hazard of falling objects are valid. Do
not let others to enter the operating area, or go under the platform. The safety
distance is 3 meters.
Pay attention to the contours of the terrain and other hazards in the operating
environment. Pay attention to any other persons and machines moving in the vicinity
as well.
Transporting the access platform is allowed only when it has been lowered
completely. Transport the equipment as low and close to the machine as possible to
keep the centre of gravity low.
Operate the controls of the loader slowly and calmly. Be careful when lifting load to
high level or lifting load from high. Avoid sudden changes in speed or direction to
maintain balance of the loader especially when handling heavy loads. Drive slowly
and carefully especially on inclined terrain or slippery surfaces.
The access platform may be transported only in the transport configuration
(completely lowered). Transporting of persons or objects with the platform is
prohibited.
The access platform must not be used in slopes with inclination greater than 5
degrees (9%). Risk of tipping over!
The use of the access platform is prohibited, if the outriggers have not been properly
supported against supporting surface.

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Make sure to use only an attachment that is in good condition. Do not modify the
attachment in a manner that would affect its safety. Drilling holes or welding hooks or
other objects on the attachment is prohibited.
It is prohibited to climb on the platform or descend from the platform while lifting.
Do not use ladders or any other equipment to extend the reach of the platform. Also,
avoid reaching out over the sides of the platform due to risk of falling.
Increasing the wind area of the equipment by attaching boards, or other material that
may act as a sail and increase the risk of tipping over, is not allowed.
Observe the weather conditions
Avoid working in thunder
When the wind speed exceeds 12.5 m/s, the use of the equipment must be
aborted and the platform must be lowered.
The lowest permitted operating temperature is -25ºC
The access platform is not electrically insulated –Do not drive near live parts or
wires. Listed below are the most common voltage levels for open wires and
according minimum safety distances:
VOLTAGE LEVEL
SAFETY DISTANCE
0 –1000V
2 m
1- 45 kV
3 m
110 kV
5 m
220 kV
5 m
400 kV
5 m
Familiarise yourself with the loader controls in a safe area. Only persons who are 18 or
older and have familiarized themselves with the operation of the equipment may use the
access platform. In addition, a specific authorization or permit may be required to operate
the platform.
Never allow anyone to get under the raised load or the 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.

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Remember to wear proper protective clothing:
The noise level at the driver's seat may exceed 85 dB(A). 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:
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.
Always fully lower the platform and place it firmly on the ground before leaving the
machine.

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4. Technical specifications
Table 2 - Leguan 50 Access platform - Technical specifications
Product number:
A34812
Maximum working height:
500 cm
Weight:
405 kg
Maximum load on platform:
200 kg
Platform dimensions (width x length):
130 x 78 cm
Lifting height, access platform base:
299 cm
Total width:
141 cm
Length in transport configuration:
145 cm
Height in transport configuration:
205 cm
Maximum allowed terrain inclination:
5º
Lowest allowed operating temperature:
-25ºC
Maximum input of hydraulic energy:
24 MPa (240 bar), 60 l/min
Noise level at platform control site:
See operator’s manual of the loader
Suitable Avant-loader:
See Table 1
Table 3 - Main components of the Leguan 50 Access platform
1
Frame
Figure 3 - Main components of access platform
2
Adjustable storage support
3
Outrigger control system spring
4
Adjustable outrigger of the platform
5
Adjustable outrigger of the loader
6
Hydraulic valve of the outrigger control system
7
Level indicator (bubble tube)
8
Pushrod
9
Lower telescopic tube
10
Upper telescopic tube
11
Access platform
12
Lift control valve
13
Emergency lowering valve (lowering from
platform)
14
Emergency lowering valve (lowering from the side
of the attachment

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4.1 Reach diagram
Figure 4 - LEGUAN 50 Reach graph
4.2 Labels and markings
Listed below are the labels and markings, which must be visible on the equipment. Replace the warning
labels, if they have become unclear or if they have detached completely. New labels are available via your
retailer or contact information provided on the cover.
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.

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4.2.1 List of labels
1
A412413
Identification plate and CE –marking
2
A417131
Max allowed load 200 kg
3
A417283
General instructions for access
platforms
4
A412542
Max. allowed horizontal force and wind
speed
5
A417131
Daily inspection

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6
A412543
Emergency lowering valve at platform
7
Ensure stability - max angle
8
Maximum supporting force
9
-
10
A417222
Minimum safety distance from live
wires
11
A412541
Leguan 50
12
Marker / hazard warning tape
yellow/black
13
A414307
Emergency lowering valve

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.
4.2.2 Label locations

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5. Attaching the attachment
The Leguan 50 Access platform is ready to use as delivered. Couple the attachment and its hydraulic hoses to
the loader as instructed in this chapter. Follow also the instructions given in the operator’s manual of the
loader.
5.1 Attaching the access platform to the loader
The centre of gravity of the access platform is at fairly high point, so the tilting of the
platform increases the risk of tipping over. Do not use the automatic locking of the locking
pins when attaching the access platform. Lower the platform on the ground and release
the locking pins manually. Never move or raise an attachment that has not been locked.
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:
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 locking system, see
additional instructions about the use of the locking system from the relevant
manuals.
Ensure that the hydraulic hoses (and the electric harness, if applicable) 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.

16 (32)
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 pins.
An attachment that has not been completely
locked to the loader may fall on the boom or
towards the operator, or 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 the fasteners on the attachment on
both sides.
Excessive tilting or lifting of an unlocked attachment increases the risk of tipping 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
more. Lower the attachment on the ground and secure the locking manually.
5.1.1 Fit rear outriggers to the loader
With the LEGUAN 50, an outrigger set is provided,
which are to be installed to the loader. The rear
outriggers increase the stability of the equipment
and prevent tipping over in case of a tire burst.
The rear outriggers must be mounted to the loader
rear frame, as shown in adjacent figure. Most loader
models have prefabricated holes for the outriggers.
The additional side counterweights can not be used
with the access platform.
The rear outriggers should be adjusted to touch the
ground during lifting.

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.
5.1.2 Lift parking support
Lift the loader slightly off the ground and lift the parking stand
under the platform to its upper position.
Under the platform there is a parking stand,
which must be lifted before transporting or
using the equipment. Lift the stand after the
platform is completely attached to the loader
5.1.3 Fit the supporting bracket
The purpose of the supporting bracket (also called the top link) is to lock the access platform to upright
position, secure the correct position, and to stabilise the platform-loader combination. The supporting bracket
is fitted in between the access platform and the loader after the quick attach plate has been secured.
With the supporting bracket the access platform is adjusted to upright position, so the final adjustment must be
made at the intended working site.
Incorrectly attached attachment may tip over. The use of the access platform without the
supporting bracket is strictly prohibited.
5.1.3.1 Adjust platform to level position and set outriggers
Outriggers
1. Lift the access platform slightly off the
ground. Adjust the outriggers (1) to a low
position by moving the locking pin and lower
the attachment to lightly touch the surface.
Remember to lock the outriggers with the
cotter pins.

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.
5.1.3.2 Set the top link
The bracket shown in the figure on the right is to prevent
tipping of the access platform when it is tilted towards the
loader.
Note that the telescopic boom of the loader must be
completely retracted, otherwise it is not possible to mount
the supporting bracket. The outriggers must be set to their
lowest position as well. The bracket on the figure prevents
the mounting of the platform, if the telescopic boom is
extended or if the outriggers are not in level with the loader.
Fitting the top link
1. Make sure outriggers are set correctly.
2. Level the access platform by tilting the loader front
plate. Check the levelness from the level indicator
(2).
3. Adjust the supporting bracket (3) to the right length
by turning its centre section. Mount the bracket to the
loader with its pins and place the cotter pins in place.
5.2 Connecting and disconnecting the hydraulic hoses
On the 200 series 2 and 400-700 series 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.
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 disconnecting 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.

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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 onto the holder on the
attachment.
Connecting the multi connector system:
1. Align the pins of the attachment connector with corresponding
holes of the loader connector. The multi connector will not
connect if the attachment connector is upside down.
2. Connect and lock the multi connector 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 multi connector 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 unlock button, turn the lever to disconnect the
connector.
3. After ending operation put the multi connector on its holder on the
attachment.
Conventional quick couplings
(alternative couplings for some loader models):
Before connecting or disconnecting the standard quick couplings, the
residual pressure must be released as shown below. The conventional
quick couplings will not connect, if there is pressure in the hydraulic
system.
To connect and disconnect the standard couplings, move the collar at the end of the female fitting. The hoses
should be connected so that the fitting equipped with a coloured cap is connected to the corresponding fitting
of the loader. Note that the protective caps on the loader and the attachment can be fastened to each other
during operation to reduce the accumulation of dirt. When disconnecting the standard quick couplings a small
amount of oil may drip from the couplings. Wear protective gloves and have some cloth at hand to keep the
equipment clean.
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. Reinstall the
protective caps on the fittings to prevent impurities from entering the hydraulic system.

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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.