Operators Manual
MB20/26
MB 20N SERIAL No. 0001 TO CURRENT
MB 26 SERIAL No. 0001 TO CURRENT
WARNING
All personnel shall carefully read, understand and follow all safety rules and operating instructions
before operating or preforming maintenance on any UpRight aerial work platform.
SAFETY RULES
Safety Rules and Operating Instructions
Safety Rules and Operating Instructions
THIS MACHINE IS NOT
INSULATED.
Operation of this machine within 3 metres of
power lines or cables is
PROHIBITED .
PROHIBITED: Use of this machine without tting of the fall restraint to the person and anchor point and use of the
machine with the platform safety drop-bar in the raised position.
PROHIBITED: All persons, other than those in the platform, from approaching within 1 metre of the machine.
DO NOT operate this machine without rst having surveyed the work area for surface hazards such as holes, kerbs,
bumps and debris.
PROHIBITED: Platform working loads in excess of 215 kg , (max. 2 persons ).
DISTRIBUTE all loads evenly on the platform.
PROHIBITED: Fitting of such items as sign-boards, ags or ropes etc. to the cage or jib.
PROHIBITED: Operation of the machine without prior safety training , use by medically unt persons or by persons
who have not read and fully understood the operating instructions in this manual.
PROHIBITED: Driving of this machine on soft, uneven ground or on oors with a localised bearing capacity of less
than 15 kg/cm2 (213 psi).
PROHIBITED: Use of this machine in winds exceeding 27 mph (12.5 m/s - Beaufort Force 6)
PROHIBITED: Use of ladders or scaolding on the platform.
PROHIBITED: Attachment of overhanging loads; size increasing of the working platform; use of this machine as a
crane or for any other application involving additional loads or forces.
PROHIBITED: Any changes or modifactions to the operating or safety systems.
INSPECT the machine thoroughly for missing decals, cracked welds, loose hardware, hydraulic leaks, damaged cables,
loose wire connections or wheel bolts. DO NOT use damaged equipment. (Contact UpRight Irl. Ltd. for instructions).
PROHIBITED: Climbing down any elevating assembly with the platform elevated.
PROHIBITED: Servicing while the platform is elevated unless rst blocking/supporting the elevating assembly.
PROHIBITED: Recharging of batteries near open ames or at a source of sparks.
PROHIBITED: Replacement of any component or part with anything other than original UpRight replacement parts
(unless specically agreed by the manufacturer.
PROHIBITED: Unattended storage (long or short term) of the machine with the Platform in the raised position or with
the Brakes disengaged.
PROHIBITED: Use, other than emmergency down functions, of the machine while the alarm sounds.
DO NOT operate the
mast or drive with the
platform elevated unless
on a rm and level
surface.
NEVER position the
platform without rst
checking for overhead
obstructions or other
hazards.
Sitting, standing or
climbing on the platform
rails is PROHIBITED .
Introduction
SCOPE
This manual includes the procedures and
responsibilities for the inspection, transportation,
preparation and safe operation of the MB20N &
MB26 Work Platforms. The Maintenance & Spare
Parts Manual covers preventative maintenance and
trouble-shooting. The term MB20/26 is used
throughout the text of this manual.
MB 2O/26 PURPOSE & LIMITATIONS
The purpose of this machine is to provide fast and
safe access to difficult-to-reach areas. The machine
may be used only on firm and level ground. Refer to
the Specifications section at the back of this
document for the machines parameter and access
limitations.
DO NOT use on soft ground or on slopes greater
than 2 degrees.
DO NOT use the lifting mechanism to raise or lower
goods or persons except within the cage and subject
to the weight limitations.
DO NOT enter the platform from a structure, rack or
other platform.
PLATFORM
The MB20/26 is a self propelled, fast acting aerial
work platform, designed to raise persons to a platform floor height of 6.00 m (~ 20 ft.). The accessible
height however is approximately 8.00 m. The platform upper payload limit is 215 kg. The unit offers the
ability to reach over obstacles but must be used on
firm and level ground. The platform is large enough
for two operators and has a free-draining perforated
floor with 150 mm toeboards. Hand-rails are constructed from aluminium alloy tubing and a safety
drop-bar is provided at the entrance. Safety harness
anchor points are also fitted in the floor of the platform.
UPPER CONTROL BOX
The upper control box or primary control box is fitted
to the front of the platform. It features a Joystick
which provides proportional control from zero to preprogrammed maximum for all functions including
drive and steer.
A safety Interlock Switch or deadman grip is
1.0
incorporated into the Joystick . It must be activated at
all times in order to operate any function. This feature
allows for one-handed operation. A complete
explanation of control functions can be found in the
section headed Operation.
LOWER CONTROL BOX
The lower control box or secondary control box is
fitted to the mast cover at arm level. It features a
deadman toggle switch and selector toggle switches
to provide pre-programmed speeds for all functions
except drive and steering. This control station is
used primarily for service-type operations including
pre-operation inspection. It should never be used to
position a manned or unmanned platform. It may be
used in the event of emergency, however, to lower
the manned platform.
ELEVATING ASSEMBLY
The platform is raised and lowered by a combination
of jib and telescoping mast actions. The main
hydraulic cylinder, mounted within the masts, lifts the
first mast directly. The other masts are connected by
a system of heavy duty plate chains and pulleys to
ensure sequential lifting. A parallel system of heavy
duty straps ensures that the masts descend in the
proper sequence and also ensures that any one mast
cannot be held in suspension by an obstacle during
descent.
The jib cylinder provides a lifting arc to the jib and
platform. All hydraulic functions are carried out using
remote solenoid-operated control valves. Each
cylinder features an integral holding valve to prevent
uncontrolled descent in the case of a hose burst.
ROTATION GEAR
The complete mast, jib and platform can be rotated to
provide up to 2.6 m (8.5 ft.) of working outreach. This
dimension is measured from the centreline of
rotation. Rotation is carried out by means of an
integral hydraulic motor driving a worm drive unit
about a heavy duty slewing gear.
MB20N/MB26
Page 1
1.2
Introduction
DRIVE & STEER SYSTEM
An electronic controller, mounted in the chassis, is
pre-programmed to adjust the upper speed limits of
each individual function.
The controller limits the rotational speed of the
electric motor and oil pump, thereby limiting the
maximum oil flow rate.
The following functions are controlled and driven by
the electrohydraulic system:-
Traction Drives ( Fwd & Rev) masts stowed
Traction Drives ( Fwd & Rev) masts raised
Steering
Mast Elevation & Descent
Mast Rotation
Jib Elevation
The following functions are gravity operated and are
determined by built-in flow orifices:-
Jib Descent
POWER SYSTEM
The power system (prime mover) incorporates four
6V batteries driving a 4kW electrohydraulic pump.
The pump drives all hydraulic cylinders and the
traction drive motors. A single multi-valve control
block divert oil pressure to the actuators. The oil flow
rate is limited by the pre-programmed speed setting
on the motor but is determined by the position of the
joystick in the Upper Control Box.
Page 2
MB20N/MB26
Transportation
Machine Weights
Before transporting or lifting the MB20N/26 machine
be aware of its weight. It is very important to realise
that the centre of gravity of the stowed machine is
approximately 80 cm above ground and in the plane
of the energy chain which is located on the back of
the mast.
MB20N CE Version = 2554 kg
MB20N US Version = 3042 kg
(6708 lbs)
MB26 CE Version = 2413 kg
MB26 US Version = 2950 kg
( 6505 lbs)
In cases of particular difficulties with lifting or shipping
it is possible to remove the single block ballast from
the machine. Remove the 13 screws connecting the
ballast cover to the mast. Undo the 4 bolts connecting
the ballast to the mast and use a forklift to remove the
ballast block. The ballast block weighs 850 kg on the
CE version and 1300 kg on the US version. This
work may not be carried out without the written
permission of UpRight Ireland engineering
department. (Tel. 353 1 2024100).
1 Hoisting by Fork-Lift
2.0
Adjust the forks so that the minimum clearance
between them is 800mm as shown below.
Approach the machine from either side but place the
fork as close as possible to the front wheel as shown.
Never approach the MB20 from the front or rear
while fork lifting.
Use maximum forklift tilt as soon as possible when
raising the MB20/26.
If travelling over sloped or uneven ground it is
strongly recommended to temporarily tie the MB20 jib
mount structure to the forklift mast as a safety
precaution.
2 Hoisting By Crane
The MB20/26 may be lifted by an overhead hoist/
crane subject to the following strict procedure.
Raise the jib to clear the lifting straps as shown.
Use 4 No. separate lifting straps connected to a
spreader beam. DO NOT use a lesser number of
threaded straps as these could slip and lead to
instability. The recommended minimum capacity of
EACH of the 4 straps is 2 tonne and the minimum
length of each strap is 2 metres. Damage to the
covers and/or cage rails can occur if a spreader
beam is not deployed during a crane lift.
Apply the straps via 1 tonne shackles to each of the 4
lifting lugs on the chassis. See the figure below.
DO NOT apply lifting straps to any other part of the
machine.
FRONT
The MB20/26 may be lifted by forklift subject to the
following strict procedure.
Ensure that the mast and jib are fully stowed and that
the pothole bars are fully retracted (raised).
MB20N/MB26
Page 3
2.6
Transportation
3 Transport By Truck
The MB20/26 can be carried on a suitably rated
transportation vehicle or trailer. Because of its high
gradeability, the machine can be driven under its own
power on to a standard loading ramp (Up to 14
degrees). It is recommended to reverse the machine
up on to the truck thus forward travelling down the
ramp at the delivery point. Winch-assisted loading is
allowable for larger slopes, however, operate the
trucks assist winch at minimum speed to avoid overpressurising the hydraulic system in the machine.
When the MB20/26 is on the truck or trailer it should
then be made secure by:-
1. Chocking the wheels.
2. Securing with adequate chains or straps
to the lifting lugs on the chassis.
To tow the vehicle or to winch it on to a truck it is
necessary to hydraulically bypass the control valves
and release these brakes.
Proceed as follows:Refer to the valve block drawing below.
1. Fully lower the jib boom and the mast sections.
Rotate the mast into the stowed position.
2. Turn the Upper Control Box to the OFF position
and remove the key.
3. Remove the rear GRP cover from the
chassis and locate the hydraulic control valve
block.
4. The hand valve marked A should be turned fully
clockwise to close. The hand valve marked B
should be turned fully anti-clockwise to open.
5. Operate the red handpump a number of times to
develop sufficient pressure to separate the
internal brake disks. These brakes are integral
with the hydraulic drive motors.
CAUTION
DO NOT loop straps through the cage, ladder or jib
as this could cause permanent structural damage
during transportation.
The machine can now be safely towed or winched.
A
B
HANDPUMP
Valve Block Towing Valves
Towing/Winching Valves
The failsafe brakes are automatically applied when
the machine comes to a stop or in the event of total
power loss due to low battery or malfunction of the
hydraulic drive system.
Page 4
WARNING
RISK OF SERIOUS INJURY. Releasing the brakes will
cause the machine to move uncontrollably on a
slope. Damaging momentum can be developed due
to the large mass of a slow moving machine.
MB20N/MB26
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