MB20N/26
Operator Manual
(EN) Manual part number 501375-004-EN for serial number :
1000 +
Nov 09
MB 20N/26
ENGLISH
When contacting UpRight Powered Access for
service or parts information, be sure to include
the MODEL and SERIAL NUMBERS from the
equipment nameplate. Should the nameplate be
missing, the SERIAL NUMBER is also stamped
on top of the chassis above the front axle pivot.
Nameplate
The Work Platform Nameplate is located
externally at the FRONT of the chassis
When contacting UpRight for service or parts information, sure to include
the MODEL and SERIAL NUMBERS from the equipment nameplate.
The MB20N/26 work platform meets and exceeds the requirements of both:
En280:2001 and ANSI A92.5 (1999)
WARNING
! !
All personnel shall carefully read, understand and follow all safety rules and operating instructions
before operating or performing maintenance on any UpRight Powered Access aerial work platform.
Safety Rules
Electrocution Hazard Tip Over Hazard Collision Hazard Fall Hazard
THIS MACHINE IS NOT
INSULATED!
USE OF THE WORK PLATFORM: This aerial work platform is intended to lift persons and his tools as well as the material used
for the job. It is designed for repair and assembly jobs and assignments at overhead workplaces (ceilings, cranes, roof structures,
buildings etc.). All other uses of the aerial work platform are prohibited!
THIS WORK PLATFORM IS NOT INSULATED! For this reason it is imperative to keep a safe distance from live parts of
electrical equipment! - DO NOT get closer than the minimum distance recommended by the “National Regulations”.
Exceeding the specified permissible maximum load is prohibited! See "Specifications - Platform Capacity" for details.
The use and operation of the aerial work platform as a lifting tool or a crane is prohibited!
NEVER exceed the manual force allowed for this machine. See “Manual Force” on page 2 for details.
DISTRIBUTE all platform loads evenly on the platform.
NEVER operate the machine without first surveying the work area for surface hazards such as holes, drop-offs, bumps, curbs, or debris;
and avoiding them.
OPERATE machine only on surfaces capable of supporting wheel loads.
NEVER operate the machine when wind speeds exceed this machine’s wind rating. See “Beaufort Scale” on page 1 for details.
NEVER attach notice boards etc. to the platform, as this will increase wind loading.
IN CASE OF EMERGENCY push EMERGENCY STOP switch to deactivate all powered functions.
IF ALARM SOUNDS while platform is elevated, STOP, carefully lower platform. Move machine to a firm, level surface.
Climbing up the railing of the platform, standing on or stepping to or from the platform onto buildings, steel or prefabricated concrete
structures, etc. is prohibited!
Dismantling the entry gate or other railing components is prohibited! Always make certain that the entry gate is closed and securely
locked!
It is prohibited to keep the entry gate in an open position when the platform is raised!
To extend the height or the range by placing of ladders, scaffolds or similar devices on the platform is prohibited!
NEVER perform service on machine while platform is elevated without blocking elevating assembly.
INSPECT the machine thoroughly for cracked welds, loose or missing hardware, hydraulic leaks, loose wire connections, and damaged
cables or hoses before using.
VERIFY that all labels are in place and legible before using.
NEVER use a machine that is damaged, not functioning properly, or has damaged or missing labels.
To bypass any safety equipment is prohibited and presents a danger for the persons on the aerial work platform and in its working range.
NEVER charge batteries near sparks or open flame. Charging batteries emit explosive hydrogen gas.
Modifications to the aerial work platform are prohibited or permissible only at the approval by
AFTER USE, secure the work platform from unauthorized use by turning the keyswitch off and removing key.
The driving of MEWP’s on the public highway is subject to Regulations made under the Road Traffic Acts.
ENVIRONMENTAL TEMPERTURE LIMITATION, The machine is primarily for use in normal ambient tempertures and conditions
ranging between 50c to -20c.
NEVER elevate the platform or drive
the machine while elevated unless
the machine is on a firm, level
surface.
NEVER position the platform
without first checking for overhead
obstructions or other hazards.
UpRight Powered Access
NEVER climb, stand, or sit on
platform guardrails or midrail.
.
NOTES:
1. I
NTRODUCTION
S
PECIAL INFORMATION
S
PECIAL LIMITATIONS
M
ANUAL FORCE
P
LATFORM CAPACITY
B
EAUFORT SCALE
2. G
ENERAL DESCRIPTION
Figure 2. Work Platform 2 - 2
3. S
AFETY INSPECTION
Figure 3. Battery Fill Button & Valve 2 - 3
Figure 4. Lower Control Panel 2 - 4
Figure 5. Joystick 2 - 5
4. O
PERATION OF THE PLATFORM CONTROLS
U
PPER CONTROL PANEL
Figure 3. Upper Control Panel 2 - 7
C
ONTROL FUNCTIONS
Table 1. Platform Controls and Indicators 2 - 7
L
OWER CONTROL PANEL
Figure 4. Lower Control Panel 2 - 8
T
YPICAL OPERATION
C
ONTROLS AND INDICATORS
E
LEVATING
T
RAVEL WITH WORK PLATFORM LOWERED
T
RAVEL WITH WORK PLATFORM ELEVATED
E
MERGENCY SITUATIONS
E
MERGENCY LOWERING (BY HAND
& L
OWERING THE WORK PLATFORM
Figure 8. Emergency Lowering - Mast Valve 2 - 11
Figure 9. Emergency Lowering - Jib Valve 2 - 11
5. T
RANSPORTATION
M
ACHINE WEIGHTS
Figure 3. Lifting by Forklift 2 - 12
L
IFTING BY CRANE
Figure 4. Lifting by Crane 2 - 13
T
RANSPORT BY TRUCK
Figure 5. Securing the platform
T
OWING
& W
INCHING VALVES
Figure 6. Valve Block-Towing Valves 2 - 15
6. A
FTER USE
& S
TORAGE
A
FTER USE EACH DAY
H
OUR METER
L
ONG-TERM STORAGE
P
RESERVATION
Figure 3. Battery Disconnect 2 - 16
B
ATTERIES
D
AILY MAINTENANCE CHECKLIST
7. S
PECIFICATIONS
C
ONTENTS
P
AGE NUMBER
1 - 1
1 - 1
1 - 1
2 - 1
2 - 1
2 - 1
2 - 2
2 - 3
2 - 6
2 - 7
2 - 7
2 - 9
2 - 9
2 - 9
2 - 9
2 - 10
2 -10
2 - 11
)
2 - 11
2 - 12
2 - 12
2 - 13
2 - 14
2 - 14
2 - 14
2 - 15
2 - 15
2 - 16
2 - 16
2 - 16
2 - 16
2 - 17
Daily Maintenance Checklist 2 - 17
MB20N
MB26
2 - 18
2 - 18
Contents
1.
Introduction
Section 1
1.
Introduction
1.1 I
NTRODUCTION
P
URPOSE
This Service & Parts Manual is designed to provide instructions and illustrations for the
safe operation and maintenance of the MB20N & MB26 Work Platform manufactured by
Upright Powered Access Ltd. The purpose of this machine is to provide fast and safe
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.
ENVIRONMENTAL TEMPERTURE LIMITATION
ambient tempertures and conditions ranging between 50c to -20c.
S
COPE
This manual includes the procedures and responsibilities for the inspection,
transportation, safe operation, maintenance, and repair of this product. The
Maintenance Section within the Parts & Service Manual also covers preventative
maintenance and troubleshooting.
S
PECIAL INFORMATION
& L
IMITATIONS
,
The machine is primarily for use in normal
Throughout this manual the users attention is drawn to these special warning boxes:
D A N G E R
! !
Indicates an imminently hazardous situation which, if not avoided, will
result in severe injury or death.
!
W A R N I N G
Indicates a potentially hazardous situation which, if not avoided,
could result in severe injury or death.
!
C A U T I O N
Indicates a potentially hazardous sit uation which, if not avoided, may
result in minor or moderate injury.
1.2 G
1 - 1
ENERAL
D
ESCRIPTION
The MB20N/26 are self propelled, fast acting aerial work platforms, designed to raise two
operators with hand tools to a platform floor height of 6.00 m and 7.76 m respectively.
The accessible height is approximately 2.00 m above these figures. It is designed to
travel with safe working load and work tools up to an upper limit, See table on page
2-18 / 2-19 .
unit offers the ability to reach over obstacles but must be used on firm and level
The
ground at all times.
!
!
1.
Introduction
P
LATFORM
The MB20N/26 platform is large enough for two operators indoors, one outdoors and
has a free-draining perforated floor with 150 mm toeboards. Hand-rails are constructed
from Steel tubing and a safety drop-bar is provided at the entrance. Safety restraint
harness anchor points are also fitted in the floor of the platform. These must be used at
all times. The main controls are fitted to this platform.
!
W A R N I N G
DO NOT use the work platform without guardrails properly
assembled and in place.
P
LATFORM
The primary (Upper) control box is permanently fitted to the front of the platform. It
features a joystick which provides proportional control for raising or lowering the mast,
raising or lowering the jib or rotating the complete mast assembly. The same joystick is
also used to drive and steer the machine.
A safety Interlock Switch or ‘deadman button’ is incorporated into the Joystick. It must
be activated at all times in order to operate any function. This feature allows for onehanded operation. A comprehensive explanation of control functions is given in the
Operators Manual - a copy of which shall be located in the platform document wallet
located just beneath the upper control station in the platform.
The secondary (Lower) control box is fitted to the mast cover at arm level. It features a
‘deadman’ enable button and selector buttons to provide pre-programmed speeds for
all functions except drive and steering. This control station is used primarily for servicetype 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.
C
ONTROLLER
!
!
W A R N I N G
NEVER operate the machine from the upper controls until the
platform entrance drop-bar is in the fully lowered position and the
safety harness is fitted.
E
LEVATING
The platform is raised and lowered by a combination of a steel jib and a series of
telescoping mast sections. The main hydraulic cylinder, mounted within the masts, lifts
the 2nd 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 ensure that a mast cannot be held in suspension by an obstacle
during descent.
The jib cylinder provides a lifting arc to the jib and cage assembly. All hydraulic
functions are carried out using solenoid operated control valves. Each cylinder features
an integral holding valve to prevent uncontrolled descent in the case of a hose bursting.
A
SSEMBLY
!
1 - 2
1.
Introduction
R
OTATION
The complete mast, jib and cage assembly can be rotated to provide a maximum
outreach of 2.6m in the case of the MB20N and 2.96m in the case of the MB26 machine.
This dimension is measured from the centreline of rotation and is carried out by means
of an integral hydraulic motor driving a Worm Drive Unit, around a Slew Gear.
D
RIVE
P
OWER
& S
An electronic controller, mounted in the chassis, is pre-programmed to adjust the upper
speed limit of each individual function. The controller limits the rotational speed of the
electronic motor and oil pump, thereby limiting the maximum oil flow rate.
The following functions are controlled and driven by the electro-hydraulic system:
• Traction Drives (Fwd & Rev) mast stowed/mast raised.
• Steering and Jib elevation.
• Mast elevation, descent and rotation.
• The Jib descent function is gravity operated and is determined by built in flow
regulators.
S
G
EAR
TEER
YSTEM
S
YSTEM
The Power System (Prime Mover) incorporates four 6V batteries driving a 4KW electro-
hydraulic pump. The pump drives all hydraulic cylinders and the traction drive motors. A
single multi-valve control block diverts the oil pressure to the individual 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.
1.3
W
ORKSHOP
Detailed descriptions of standard workshop procedures, safety
principles and service operations are not included. Note that this
manual does contain warnings and cautions against some specific
service methods that could cause personal injury, or could damage
a machine or make it unsafe.
P
ROCEDURES
All information contained in this manual is based on the latest product information
available at the time of printing. We reserve the right to make changes at any time
without notice.
No part of this publication may be reproduced, stored in retrieval system, or transmitted,
in any form by any means, electronic, mechanical, photocopying, recording, or
otherwise, without the prior written permission of the publisher. This includes text,
figures, and tables.
!
CAUTION
!
1 - 3
Please understand that these warnings cannot cover all
conceivable ways in which service, whether or not recommended
by UpRight, might be done, or of the possible hazardous
consequences of each conceivable way, nor could UpRight
investigate all such ways.
Anyone using service procedures or tools, whether or not
recommended by UpRight must satisfy themselves thoroughly that
neither personal safety nor machine safety will be jeopardized.
When in doubt, contact your local distributor or UpRight.
Loading...