Upright SL20 Series Guide

SERVICE & PARTS
MANUAL
SL20 Euro
Aerial Work Platforms
Serial Numbers 9300 to Current
When contacting UpRight for service or parts
information, be sure to include the MODEL and
SERIAL NUMBERS from the equipment name-
plate. Should the nameplate be missing, the
SERIAL NUMBER is also stamped at the name-
plate location.
101199-022
01/00 K
Call Toll Free in U.S.A.
1-800-926-LIFT
PARTS: 1-888-UR-PARTS
PARTS FAX: [phone]
UpRight, Inc.
1775 Park Street
Selma, California 93662
TEL: [phone]
FAX: [phone]
PARTS: 1-888-UR-PARTS
PARTS FAX: [phone]
Serial number stamped
beneath nameplate.
Upright Ireland, Ltd.
Pottery Road
Dun Laoire,
Ireland
TEL: [phone]
FAX: [phone]
Model:______________
Model:______________
Serial n
Serial n
umber:_____________
umber:_____________
GVW:
:
__________kg
__________kg
Mfg. date:___________
date:___________
Maxim
Maxim
um wheel load___________ kg
um wheel load___________ kg
Maxim
Maxim
u
u
m allo
mallo
wab
wab
le inc
le inc
line of mac
line of mac
hine when ele
hine when ele
v
v
ated:_____deg.
ated:_____deg.
Occupants and equipment m
Occupants and equipment m
ust not e
ust not e
xceed the rated maxim
xceed the rated maxim
um
um
load:
load:
_____kg Maxim
_____kg Maxim
um platf
um platf
orm occupants:
orm occupants:
_____
_____
Maxim
Maxim
um allo
um allo
wab
wab
le sIde f
le sIde f
orce on platf
ce on platf
orm:
orm:
_____N
_____N
Maxim
Maxim
um platf
um platf
orm height:
orm height:
______m
______m
Maxim
Maxim
um platf
um platf
orm reac
orm reac
h:
h:
______m
______m
Maxim
Maxim
um allo
um allo
wab
wab
le wind speed:
le wind speed:
______m/s = Beauf
______m/s =Beauf
ort scale ____
tscale ____
Maxim
Maxim
um h
um h
ydraulic system pressure:
ydraulic system pressure:
_____bar
_____bar
Maxim
Maxim
um system v
um system v
olta
olta
ge:
e:
_______V
_______V
This mac
This mac
hine is man
hine is man
ufactured to compl
ufactured to compl
y with
y with
Machinery Directive 89-392/CEE
yDirective 89-392/CEE
CA
CA
UTION:
UTION:
CONSUL
CONSUL
T OPERA
TOPERA
TOR'S MANU
OR'S MANU
AL BEFORE USE.
AL BEFORE USE.

Page iSL20
FORWARD
HOW TO USE THIS MANUAL
This manual is divided into 6 sections.
SECTION 1INTRODUCTION &S
PECIFICATIONS
General description and machine specifications.
SECTION 2MACHINE PREPARATION &O
PERATION
Information on how to operate the work platform and how to prepare it for operation.
SECTION 3MAINTENANCE
Preventative maintenance and service information.
SECTION 4TROUBLESHOOTING
Causes and solutions to typical problems.
SECTION 5SCHEMATICS
Schematics and valve block diagram with description and location of components. Large sche-
matic drawings may be located in the back of the manual.
SECTION 6ILLUSTRATED PARTS BREAKDOWN
Complete parts lists with illustrations. Large parts drawings may be located in the back of the
manual.
SPECIAL INFORMATION
DANGER
!
Indicates the hazard or unsafe practice will result in severe injury or death.
WARNING
!
Indicates the hazard or unsafe practice could result in severe injury or death.
CAUTION !
Indicates the hazard or unsafe practice could result in minor injury or property
damage.
NOTE: Gives helpful
information.

Page ii
Forward --
SL20
WORKSHOP PROCEDURES
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
!
Detailed descriptions of standard workshop procedures, safety principles and service
operations are not included. Please note that this manual does contain warnings and
cautions against some specific service methods which could cause personal injury, or
could damage a machine or make it unsafe. Please understand that these warnings
cannot cover all conceivable ways in which service, whether or not recommended by
UpRight, Inc., might be done, or of the possible hazardous consequences of each
conceivable way, nor could UpRight Inc. investigate all such ways. Anyone using service
procedures or tools, whether or not recommended by UpRight Inc., must satisfy
themselves thoroughly that neither personal safety nor machine safety will be
jeopardized.

Page iiiSL20 Work Platform
TABLE OF CONTENTS
Section 1
Introduction
1.1Purpose........................................................ 1-1
Scope .....................................................................1-1
1.2GeneralDescription.............................................. 1-1
PurposeAndLimitations ......................................................1-1
Section 2
Operation
2.1SafetyRules.................................................... 2-1
2.2Introduction .................................................... 2-2
2.3Pre-Operation&SafetyInspection................................... 2-2
2.4Operation ...................................................... 2-3
PlatformExtension ...........................................................2-3
TravelWithPlatformLowered .................................................2-3
Steering....................................................................2-4
ElevatingPlatform ...........................................................2-4
LoweringPlatform ...........................................................2-4
EmergencyLowering .........................................................2-4
TravelWithPlatformElevated..................................................2-4
AfterUseEachDay ..........................................................2-5
2.5TransportingWorkPlatform ....................................... 2-5
ByForklift .................................................................2-5
ByTruck...................................................................2-6
2.6Maintenance.................................................... 2-6
BlockingElevatingAssembly ..................................................2-6
BatteryMaintenance..........................................................2-7
2.7PreventativeMaintenance.......................................... 2-8
2.8PreventativeMaintenanceChecklist.................................. 2-9
PreventativeMaintenanceKey..................................................2-9
PreventativeMaintenanceReport ...............................................2-9
2.9Specifications.................................................. 2-10
Section 3
Maintenance
3.1Introduction .................................................... 3-1
Terminology ................................................................3-1
GeneralProcedures...........................................................3-1
3.2DateCodeIdentificationonHoses................................... 3-1

Page iv
Table of Contents -
SL20 Work Platform
3.3SpecialTools....................................................3-2
3.4DeutschConnectors...............................................3-2
MaleConnector(Plug)........................................................3-3
FemaleConnector(Receptacle).................................................3-3
ReleasingLockingFingers ....................................................3-3
Crimping ..................................................................3-3
RemovingContactfromHeavyDutyPlug ........................................3-3
3.5BlockingElevatingAssembly.......................................3-4
BraceInstallation ............................................................3-4
BraceRemoval..............................................................3-4
3.6BatteryMaintenance..............................................3-4
BatteryInspectionandCleaning ................................................3-4
BatteryCharging ............................................................3-5
3.7SwitchAdjustments ..............................................3-6
Proximity ..................................................................3-6
TiltSensor .................................................................3-6
PQControlHandle...........................................................3-6
3.8MotorControllerandI/OBoardDipSwitchSettings.....................3-7
Controller..................................................................3-7
I/OBoard ..................................................................3-7
3.9Lubrication .....................................................3-8
3.10HydraulicOilTankandFilter......................................3-8
FluidLevel.................................................................3-8
OilandFilterReplacement ....................................................3-8
3.11SettingHydraulicPressures .......................................3-9
MainReliefValve ...........................................................3-9
SteeringReliefValve........................................................3-10
LiftReliefValve ...........................................................3-10
OvercenterValve ...........................................................3-10
3.12 HydraulicManifold............................................3-12
Removal ..................................................................3-12
Disassembly ...............................................................3-12
CleaningandInspection......................................................3-12
Assembly .................................................................3-12
Installation ................................................................3-12
3.13HydraulicPowerUnit...........................................3-14
Removal ..................................................................3-14
Installation ................................................................3-14
3.14HydraulicDriveMotorsandHubs.................................3-14
Removal ..................................................................3-14
Installation ................................................................3-15
3.15WheelBearings................................................3-15
Removal ..................................................................3-15
Installation ................................................................3-15
3.16BrakeCylinder ................................................3-17
Removal ..................................................................3-17
Installation ................................................................3-17
3.17SteeringCylinder...............................................3-18
Removal ..................................................................3-18
Disassembly ...............................................................3-18
CleaningandInspection......................................................3-18
AssemblyandInstallation ....................................................3-19
Installation ................................................................3-19

Page v
Table of Contents -
SL20 Work Platform
3.18LiftCylinder ................................................. 3-20
Removal..................................................................3-20
Disassembly...............................................................3-20
CleaningandInspection......................................................3-20
Reassembly ...............................................................3-20
Installation ................................................................3-20
3.19DepressionMechanismCylinder.................................. 3-22
Removal..................................................................3-22
Disassembly...............................................................3-22
CleaningandInspection......................................................3-22
Assembly .................................................................3-22
Installation ................................................................3-23
DepressionMechanismSystemAdjustment ......................................3-23
3.20AdjustableCompressionTube.................................... 3-23
3.21ElectricMotor ................................................ 3-24
Troubleshooting ............................................................3-24
Disassembly...............................................................3-24
Inspection................................................................ 3-25
3.22TorqueSpecifications .......................................... 3-26
Section 4
Troubleshooting
4.1Introduction.................................................... 4-1
GeneralProcedure ...........................................................4-1
4.2Troubleshooting................................................. 4-2
SpecialTools ...............................................................4-2
AdjustmentProcedures .......................................................4-2
4.3 UprightMotorControllerDiagnostics............................... 4-3
4.4MeasuredVoltageatI/OBoard..................................... 4-4
4.5ElectricalTroubleshooting......................................... 4-5
4.6HydraulicTroubleshooting ........................................ 4-6
Section 5
Schematics
5.1Introduction.................................................... 5-1
Electric-Model .............................................................5-2
HydraulicSchematic .........................................................5-4
Section 6
Illustrated Parts Breakdown
6.1Introduction.................................................... 6-1

Page vi
Table of Contents -ListofFigures
SL20 Work Platform
LIST OF FIGURES
Section 1
Introduction
Figure1-1:SL20WorkPlatform ........................................1-1
Section 2
Operation
Figure2-1:ChassisControls............................................2-2
Figure2-2:EmergencyLoweringKnob ...................................2-2
Figure2-3:PlatformControls ...........................................2-3
Figure2-4:PlatformExtension ..........................................2-3
Figure2-5:TransportingtheWorkPlatform................................2-5
Figure2-6:BlockingtheElevatingAssembly...............................2-6
Figure2-7:PowerModule..............................................2-7
Section 3
Maintenance
Figure3-1:DeutschConnectorKit .......................................3-2
Figure3-2: PlugsandReceptacles,DeutschConnectors......................3-2
Figure3-3:LockingFinger,DeutschConnector.............................3-3
Figure3-4:HeavyDutyDeutschConnector................................3-3
Figure3-5:BlockingTheElevatingAssembly..............................3-4
Figure3-6:BatteriesandCharger ........................................3-5
Figure3-7:ProximitySwitch............................................3-6
Figure3-8:TiltSensor.................................................3-6
Figure3-9:PQControlHandle ..........................................3-6
Figure3-10:Controller................................................. 3-7
Figure3-11:I/OBoard.................................................3-7
Figure3-12:HydraulicOilTankandFilter.................................3-8
Figure3-13:HydraulicManifold.........................................3-9
Figure3-14:HydraulicManifold,ExplodedView ..........................3-13
Figure3-15:HydraulicPowerUnit......................................3-14
Figure3-16:HydraulicDriveMotor.....................................3-14
Figure3-17:WheelBearings...........................................3-15
Figure3-18:BrakeCylinder ...........................................3-17
Figure3-19:SteeringCylinder..........................................3-18
Figure3-20:SteeringCylinderAssembly.................................3-19
Figure3-21:LiftCylinder InstallationandAssembly .......................3-21
Figure3-22:DepressionMechanismCylinderInstallation....................3-22
Figure3-23:DepressionMechanismAssembly ............................3-22
Figure3-24:CompressionTubeAssembly................................3-23
Figure3-25:ElectricMotorService......................................3-24
Figure4-1:MotorController............................................4-3
Figure5-1:HydraulicBlock ............................................5-6
Figure5-2:Plugs .....................................................5-7

Page vii
Table of Contents - List of Tables
SL20 Work Platform
LIST OF TABLES
Section 3
Maintenance
Table3-1:Fasteners ................................................................3-26
Table 3-2: Hydraulic Components .....................................................3-26
Section 4
Troubleshooting
Table4-1:LEDFaultCodes...........................................................4-3
Table4-2:CircuitBoardConnectors ....................................................4-4
Table4-3:TroubleshootingGuide:ElectricalSchematics ...................................4-5
Table4-4:TroubleshootingGuide:HydraulicSchematic ....................................4-6

Page viii
Table of Contents -ListofTables
SL20 Work Platform
NOTES:

Page 1-1SL20
Section 1
INTRODUCTION
1.1 PURPOSE
This manual provides illustrations and instructions for the operation and maintenance of the
SL20 Series Work Platforms manufactured by UpRight, Inc. Selma, California.
SCOPE
This manual includes both operation and maintenance responsibilities concerning the SL20
Series Work Platform’s readiness. The Maintenance Section covers scheduled maintenance,
troubleshooting, repair, adjustment and replacement.
1.2 GENERAL DESCRIPTION
Figure 1-1:
SL 20 Work
Platform
The SL20 Series
Work Platform is a
self-propelled aerial
work platform
designed to be used
as a means of elevat-
ing personnel and
equipment and to
provide a mobile
work platform. It is
designed to provide
mobility with the plat-
forminaraisedor
lowered position.
Travel with the plat-
form elevated is auto-
matically limited to
creep speed range.
PURPOSE AND
LIMITATIONS
The objective of the
SL20 Series Work
Platforms is to provide a quickly deployable, self-propelled, variable height work platform. The
elevating function shall only be used when the work platform is on a firm level work area. The
work platform is intended to be self-propelled when in relatively close proximity to the work area.
1
2
3
5
4
6
1. Platform, Guard Rails
2. Elevating Assembly
3. Chassis
4. Control Module
5. Power Module
6. Joystick Controls

Page 1-2
Introduction -1.2-GeneralDescription
SL20
NOTES:

Page 2-1SL20
Section 2
OPERATION
2.1 SAFETY RULES
USE OFTHE AERIAL
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.
NEVER operate the machine without first surveying the work area for surface hazards such as holes, drop-
offs, bumps and debris.
NEVER operate the machine if all guardrails are not properly in place and secured with all fasteners properly
torqued. Operating the machine with the door open is prohibited.
CLOSE door after mounting platform. Dismantling guard rails or door is prohibited.
NEVER use ladders or scaffolding on the platform.
NEVER attach overhanging loads or increase platform size. Installation of wind force-increasing parts or
altering the machine is prohibited.
LOOK up, down and around for overhead obstructions and electrical conductors.
DONOT exceed maximum carrying load. Distribute all loads evenly on the platform. See specifications page
for maximum platform load.
NEVER operate the machine when wind speeds exceed 45 km/h (28 mph =12.5 m/sec)beaufort scale 6).
NEVER use damaged equipment. (Contact UpRight for instructions.)
NEVER modify operating or safety systems. Deactivating safety systems is prohibited.
INSPECT the machine thoroughly for cracked welds, loose hardware, hydraulic leaks, damaged control cable,
loose wire connections and wheel bolts.
NEVER climb down elevating assembly with the platform elevated.
NEVER perform service on machine while platform is elevated without blocking elevating assembly.
NEVER recharge batteries near sparks or open flame. Batteries that are being charged emit highly explosive
hydrogen gas.
AFTER USE secure the work platform against unauthorized use by turning key switch off and removing key.
USING the machine as a crane is prohibited.
INSTALLATION or use of components or parts that are not provided by UpRight Inc. is prohibited.
This Machine is
not Insulated
Electrocution Hazard
Never position the
platform without checking
for overhead obstructions.
Collision Hazard
Never elevate or drive elevated on
uneven slopes or soft ground or
elevate the platform unless the
platform is level.
Tip Over Hazard
Never sit, stand or
climb on guardrail or
midrail.
Fall Hazard

Page 2-2
Operation -2.2-Introduction
SL20
2.2 INTRODUCTION
This manual covers operation of the SL20 Work Platform.
2.3 PRE-OPERATION &S
AFETY INSPECTION
(FIGURES 1, 2, AND 3)
NOTE: Carefully read,
understand and follow all safety
rules and operating instructions.
Perform the following steps each
day before use.
1. Open module covers and inspect for damage, oil leaks or missing parts.
2. Check the level of the hydraulic oil with the platform fully lowered. Oil should be visible to full
line on tank. Add hydraulic fluid if necessary.
3. Check that fluid level in the batteries is correct (See Battery Maintenance).
4. Verify that batteries are charged.
5. Check that AC extension cord has been disconnected from charger.
6. Check that all guardrails are in place with fasteners properly tightened.
7. Carefully inspect the entire work platform for damage such as cracked welds or structural
members, loose or missing parts, oil leaks, damaged cables or hoses, loose connections,
or tire damage.
8. Move machine, if necessary, to unobstructed area to allow for full elevation.
9. Pull out chassis emergency stop switch ON.
10. Pull out platform emergency stop switch ON
Figure 2-1:
Chassis Controls
11. Turn and hold the Chassis Key
Switch to CHASSIS. Push
chassis lift switch to lift position
and fully elevate the platform.
12. Visually inspect the elevating
assembly, lift cylinder, cables
and hoses for damage or
erratic operation. Check for
missing or loose parts.
13. Verify that depression mecha-
nism supports have rotated
into position under each mod-
ule.
14. Turn and hold the Chassis Key
Switch to CHASSIS. Partially
lower the platform by pushing
chassis lift switch to LOWER,
and check operation of the
audible lowering alarm.
15. Pull out on the emergency low-
ering knob to check for proper operation. Once the platform is fully lowered, release the
knob.
Figure 2-2:
Emergency Lowering Knob
16. Turn the chassis key switch to
PLATFORM.
17. Close and secure module covers.
18. Check that route is clear of obsta-
cles (persons, obstructions, holes
and drop-offs), is level, and is
capable of supporting the wheel
loads.
19. Mount the platform and latch the
gate across the entrance.
20. PLATFORM CONTROLS. Tu r n
the selector switch to drive. While
holding in the interlock switch,
move the handle to FORWARD,
then REVERSE, to check for
speed control.
Emergency Stop
Switch
Chassis Key
Switch
Lift/Lower Switch
Emergency Lowering Knob

Page 2-3
Operation - 2.4 - Operation
SL20
21. Push steering switch RIGHT, then LEFT, to check for steering control.
Figure 2-3:
Platform Controls
22. Turn selector switch to LIFT.
Grasp the control handle,
depress the Interlock Switch and
push it forward to check platform
lift controls. Raise the platform
to full elevation.
23. Pull back on the Control Handle.
Platform should descend and
audible lowering alarm should
sound.
24. The machine will descend to a
Loading Clearance Height and
stop. Check around the base of
the platform to insure that no
one is in contact with the
machine.
25. Press the Loading Clearance
Lowering Button to lower plat-
form completely.
26. Push the platform emergency
stop switch button to check for
proper operation. All the
machine functions should be
disabled. Pull out to resume.
2.4 OPERATION
NOTE: Before operating the
work platform, ensure that the
pre-operation and safety
inspection has been completed,
any deficiencies have been
corrected, and the operator has
been thoroughly trained on this
machine.
PLATFORM EXTENSION
Figure 2-4:
Platform Extension
1. Mount the platform and latch the
gate across the entrance.
2. Depress the foot lever at the rear
of the platform extension. Push
the platform extension toward
the front of the machine until the
pin engages the front stop.
3. To retract, depress the lever and
pull the platform extension
toward the rear of the machine
until the pin engages the rear
stop
TRAVEL WITH PLATFORM
LOWERED
1. Check that route is clear of peo-
ple, obstructions, holes and
drop-offs, is level, and is capable
of supporting the wheel loads.
2. Verify that chassis key switch is
turned to PLATFORM and that chassis emergency stop switch is on (pulled out).
Steering
Switch
Drive/Lift
Switch
EmergencyStop
Switch
Loading Clearance
Lowering Button
Interlock
Switch

Page 2-4
Operation -2.4-Operation
SL20
3. After mounting the platform, latch the gate across the entrance.
4. Check clearances above, below, and to the sides of the platform.
5. Pull platform emergency stop button out to the ON position.
6. Position the drive/lift switch to DRIVE.
7. Hold in the interlock switch and move the control handle to FORWARD or REVERSE to
travel in the desired direction. The speed of the machine will depend on the position of the
handle.
STEERING
1. Turn rotary selector switch to DRIVE.
2. While holding in the interlock switch, push the steering switch to RIGHTorLEFTtoturn
wheels in the desired direction. Observe the tires while operating the machine to ensure
proper direction.
NOTE: Steering is not self-
centering. Wheels must be
returned to the straight ahead
position by operating the
steering switch.
ELEVATING PLATFORM
1. Position rotary selector switch to LIFT.
2. While holding in the interlock switch, push the joystick up.
3. If the machine is not level the tilt alarm will sound and the machine will not lift or drive. If the
tilt alarm sounds the platform must be lowered and the machine moved to a level
location before attempting to re-elevate the platform.
NOTE: Depression mechanism
supports will deploy
automatically when platform
elevates and will retract when
machine is lowered completely
and driven.
LOWERING PLATFORM
1. Position selector switch to LIFT.
2. Grasp the Control Lever so that the Interlock Switch is depressed. Move handle to DOWN
position. A warning alarm will sound while lowering. The machine will to descend to loading
clearance height, then stop.
3. The operator must look around the base of the platform and be sure that no one is in con-
tact with the machine.
4. Press the Loading Clearance Release Button on the platform control box. Platform will now
lower completely.
EMERGENCY LOWERING
(FIGURE 2)
WARNING
!
If the platform should fail to lower, NEVER climb down the elevating assembly.
The emergency lowering valve knob is located at the rear of the chassis.
1. Open the emergency lowering valve by pulling and holding the knob.
2. To close, release the knob. NOTE: The platform will not elevate if the emergency lowering
valve is open.
TRAVEL WITH PLATFORM ELEVATED
NOTE: Work platform will travel
at reduced speed when platform
is elevated.
1. Check that route is clear of persons, obstructions, holes and drop-offs, is level, and capable
of supporting the wheel loads.
2. Check clearances above, below and to the sides of platform.
3. Turn selector switch to DRIVE position.
4. Push joystick FORWARD or REVERSE for desired direction of travel.
5. If the machine is not level the tilt alarm will sound and the machine will not lift or drive. If the
tilt alarm sounds the platform must be lowered and the machine moved to a level location
before attempting to re-elevate the platform.

Page 2-5
Operation -2.5-TransportingWorkPlatform
SL20
AFTER USE EACH DAY
1. Ensure that the platform is fully lowered.
2. Park the machine on level ground, preferably under cover, secure against vandals, children,
and unauthorized operation.
3. Turn the key switch to OFF and remove the key to prevent unauthorized operation.
2.5 TRANSPORTING WORK PLATFORM
Figure 2-5:
Transporting the Work Platform
BYFORKLIFT
NOTE: Forklifting is for
transporting only. Forklift from the side by lifting under chassis modules.
CAUTION
!
See specifications for weight of work platform and be certain that forklift is of adequate
capacity to lift work platform.
This Machine is
not Insulated
This machine is not
insulated. Follow your
national safety stan-
dards and maintain
the required safety dis-
tance when working
near energized equip-
ment.

Page 2-6
Operation -2.6-Maintenance
SL20
BYTRUCK
1. Lift platform above eight feet, then lower using the control handle. The platform will stop at
the Loading Clearance Height.
2. Maneuver the work platform into transport position. Press the Loading Clearance Height
Release Switch to fully lower the platform, then chock the wheels.
3. Secure the work platform to the transport vehicle with chains or straps of adequate load
capacity attached to the chassis tie down/lifting lugs.
CAUTION !
Overtightening of chains or straps through tie down lugs may result in damage to work
platform.
2.6 MAINTENANCE
DANGER
!
Never perform service on the work platform in the elevating assembly area while
platform is elevated without first blocking the elevating assembly.
DO NOT stand in elevating assembly area while deploying or storing brace.
DO NOT block elevating assembly with a load in the platform.
BLOCKING ELEVATING ASSEMBLY
BRACE INSTALLATION
Figure 2-6:
Blocking the Elevating Assembly
1. Park the work platform on firm, level ground.
2. Turn and hold Chassis Key Switch to Chassis.
Push chassis lift switch to LIFT and elevate
platform approximately two feet.
3. Place10cm.x10cm.(4in.x4in.)wood block
as shown in illustration.
4. Turn and hold Chassis Key Switch to Chassis.
Push chassis lift switch to LOWER and gradu-
ally lower platform until boom is supported by
the wood block.
BRACE REMOVAL
1. Turn and hold Chassis Key Switch to Chassis.
Push chassis lift switch to LIFT and gradually
raise platform until wood block can be removed.
2. Remove wood block.
3. Turn and hold Chassis Key Switch to Chassis. Push chassis lift switch to LOWER and com-
pletely lower platform.
4. Close control module cover.
1. Wood Block

Page 2-7
Operation - 2.6 - Maintenance
SL20
BATTERY MAINTENANCE
WARNING
!
Hazard of explosive gas mixture. Keep sparks, flame, and smoking material away from
battery.
Always wear safety glasses when working with batteries.
Battery fluid is highly corrosive. Thoroughly rinse away any spilled fluid with clean water.
Always replace batteries with UpRight batteries or manufacturer approved replacements
weighing 28 kg. (62 lbs.)each.
• Check battery fluid level daily, especially if work platform is being used in a warm, dry climate.
• If electrolyte level is lower than 10 mm (3/8 in.)above plates, add distilled water ONLY.Donot
use tap water with high mineral content, as it will shorten battery life.
• The battery and cables should be inspected regularly for signs of cracks in the case, electro-
lyte leakage and corrosion of the terminals. Inspect cables for worn spots or breaks in the
insulation and for broken cable terminals. Keep terminals and tops of batteries clean.
• Refer to the Service Manual to extend battery life and for complete service instructions.
BATTERY CHARGING
Figure 2-7:
Power Module
Charge batteries at end of each work
shift or sooner if batteries have been
discharged.
WARNING
!
Charge batteries in a well ventilated area.
Do not charge batteries when the work platform is in an area containing sparks or
flames.
Permanent damage to batteries will result if batteries are not immediately recharged
after discharging.
Never leave charger operating unattended for more than two days.
Never disconnect cables from batteries when charger is operating.
Keep charger dry.
Never operate machine while batteries are being charged.
1. Check battery fluid level. If electrolyte level is lower than 10 mm (3/8 in.)above plates add
distilled water only.
2. Connect extension cord to charger plug at end of left module. Connect extension cord 1.5
mm² (12 gauge)minimum conductor diameter;15m (50 ft.)maximum length)to properly
grounded outlet of correct voltage and frequency.
NOTE: Charger circuit must be
used with a GFI (Ground Fault
Circuit Interrupt) outlet.
3. Charger turns on automatically after a short delay.
NOTE: Do not operate the
machine while the charger is
plugged in.
Battery Charger
Remove to check fluid level

Page 2-8
Operation - 2.7 - Preventative Maintenance
SL20
2.7 PREVENTATIVE MAINTENANCE
The complete inspection consists of periodic visual and operational checks, together with all nec-
essary minor adjustments to assure proper performance. Daily inspection will prevent abnormal
wear and will prolong the life of all systems. The inspection and maintenance schedule is to be
performed at regular intervals. Inspection and maintenance shall be performed by personnel who
are trained and familiar with mechanical and electrical procedures.
WARNING
!
Before performing preventative maintenance, familiarize yourself with the operation of
the machine.
Always block the elevating assembly whenever it is necessary to enter the scissor
assembly to perform maintenance while the platform is elevated.
The preventative maintenance table has been designed to be used primarily for machine service
and maintenance repair. Please photocopy the following page and use the table as a checklist
when inspecting the machine for service.