Snorkel S1930 User manual

P/N 0361266
March, 2001
Operator’s
Manual

S1930 – 0361266
DANGER
The aerial platform is not electrically insulated. Death or serious injury can result
from contact with, or inadequate clearance from, an energized conductor.
Do not go closer than the minimum safe approach distance as defined by the Mini-
mum Safe Approach Distance section in Chapter 3–Safety.
Regard all conductors as energized.
Allow for electrical wire sag and aerial platform sway.
If the platform, scissors structure, or any part of the aerial platform contacts a high-voltage
electrical conductor, the entire machine can become electrically charged.
Ifthathappens,remainonthemachineanddonotcontactanyotherstructureorobject.This
includestheground,adjacent buildings,poles,andanyother objectsthat arenotpartofthe
aerial platform.
Such contact could make your body a conductor to the other object, creating an electrical
shock hazard resulting in death or serious injury.
If an aerial platform is in contact with an energized conductor the platform operator must
warn ground personnel in the vicinity to stay away.Their bodies can conduct electricity cre-
ating an electrical shock hazard resulting in death or serious injury.
Do not approach or leave the aerial platform until the electricity has been turned off.
Do not attempt to operate the lower controls when the platform, scissors structure, or any
part of the aerial platform is in contact with a high-voltage electrical conductor or if there is
an immediate danger of such contact.
Personnel on or near an aerial platform must be continuously aware of electrical hazards,
recognizingthatdeathorseriousinjurycanresultfromcontactwithanenergizedconductor.
Battery posts, terminals and related accessories contain
lead and lead components, chemicals known to the State
of California to cause cancer and birth defects or other
reproductive harm. Wash hands after handling.

Table of Contents
Chapter 1. Introduction
Aerial Platform Features. . . . . . . . . . . . . . . . . . . . . 1-1
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Operator’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Safety Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Manual of Responsibilities . . . . . . . . . . . . . . . . . . . 1-2
Additional Information. . . . . . . . . . . . . . . . . . . . . . . 1-2
Chapter 2. Specifications
Component Identification . . . . . . . . . . . . . . . . . . . . 2-1
General Specifications . . . . . . . . . . . . . . . . . . . . . . 2-2
Chapter 3. Safety
Electrocution Hazards . . . . . . . . . . . . . . . . . . . . . . 3-1
Minimum Safe Approach Distance . . . . . . . . . . 3-1
Prestart Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Work Place
Inspection and Practices . . . . . . . . . . . . . . . . . . . . 3-2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Tip-Over and Falling Hazards. . . . . . . . . . . . . . . . . 3-2
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Placards and Decals. . . . . . . . . . . . . . . . . . . . . . . . 3-3
Chapter 4. Safety Devices
Emergency Stop Controls. . . . . . . . . . . . . . . . . . . . 4-1
Drive Motion Alarm. . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Pothole Protector Skids . . . . . . . . . . . . . . . . . . . . . 4-1
Drive/Lift Pothole
Protector Interlock . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Drive/Lift Level Sensor Interlock. . . . . . . . . . . . . . . 4-2
Lowering Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Emergency Lowering Lever . . . . . . . . . . . . . . . . . . 4-2
Safety Prop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Guardrails. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Ground Fault Circuit Interrupter . . . . . . . . . . . . . . . 4-3
Tilt Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Flashing Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Chapter 5. Gauges
Hour Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Ammeter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Battery Condition Indicator. . . . . . . . . . . . . . . . . . . 5-1
Chapter 6. Batteries
General Maintenance. . . . . . . . . . . . . . . . . . . . . . . 6-1
Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Chapter 7. Controls
Battery Disconnect Switch . . . . . . . . . . . . . . . . . . . 7-1
Lower Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Emergency Stop Button. . . . . . . . . . . . . . . . . . . 7-1
Control Selector Switch . . . . . . . . . . . . . . . . . . . 7-1
Platform Raise/Lower Switch. . . . . . . . . . . . . . . 7-1
Circuit Breaker Reset Buttons . . . . . . . . . . . . . . . . 7-1
Upper Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Emergency Stop Button. . . . . . . . . . . . . . . . . . . 7-2
Drive/Lift Selector Switch. . . . . . . . . . . . . . . . . . 7-2
Joystick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Steer Switch . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Horn Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Battery Condition Indicator . . . . . . . . . . . . . . . . 7-2
Chapter 8. Prestart Inspection
Operator’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Battery Fluid Level. . . . . . . . . . . . . . . . . . . . . . . 8-1
Battery Terminals. . . . . . . . . . . . . . . . . . . . . . . . 8-1
Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Safety Prop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Cables and Wiring Harness . . . . . . . . . . . . . . . . . . 8-2
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Fluid Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Hoses, Tubes, and Fittings . . . . . . . . . . . . . . . . 8-3
Free-Wheeling Valve . . . . . . . . . . . . . . . . . . . . . 8-3
Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Parking Brakes. . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Ground Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Lower Control Station. . . . . . . . . . . . . . . . . . . . . . . 8-4
Operating Controls. . . . . . . . . . . . . . . . . . . . . . . 8-4
Emergency Stop . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Lowering Alarm . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Pothole Protector Interlock. . . . . . . . . . . . . . . . . . . 8-5
Level Sensor Interlock . . . . . . . . . . . . . . . . . . . . . . 8-5
Emergency Lowering . . . . . . . . . . . . . . . . . . . . . . . 8-6
Flashing Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Weldments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Slide Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Fasteners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Upper Control Station. . . . . . . . . . . . . . . . . . . . . . . 8-7
Guardrail System. . . . . . . . . . . . . . . . . . . . . . . . 8-7
Platform Extension. . . . . . . . . . . . . . . . . . . . . . . 8-7
Operating Controls. . . . . . . . . . . . . . . . . . . . . . . 8-7
Emergency Stop . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Lowering Alarm . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Drive Motion Alarm . . . . . . . . . . . . . . . . . . . . . . 8-8
Electrical Power Outlet . . . . . . . . . . . . . . . . . . . 8-8
Battery Condition Indicator . . . . . . . . . . . . . . . . 8-8
Horn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Placards and Decals. . . . . . . . . . . . . . . . . . . . . . . . 8-9
Prestart Inspection Check List . . . . . . . . . . . . . . . 8-11
S1930 – 0361266

S1930 – 0361266
Chapter 9. Operation
Preparing for Operation . . . . . . . . . . . . . . . . . . . . . 9-1
Lower Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Upper Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Drive Speeds . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Drive/Lift Level Sensor Interlock. . . . . . . . . . 9-2
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Raising and Lowering. . . . . . . . . . . . . . . . . . 9-3
Extending . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Brakes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Swing-Out Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Electrical Power Outlet . . . . . . . . . . . . . . . . . . . . . . 9-4
Chapter 10. Stowing and Transporting
Stowing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Transporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Lifting With a Forklift . . . . . . . . . . . . . . . . . . . . 10-1
Winching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Hoisting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Securing for Transport. . . . . . . . . . . . . . . . . . . 10-3
Chapter 11. Emergency Operation
Emergency Lowering . . . . . . . . . . . . . . . . . . . . . . 11-1
Towing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
Chapter 12. Troubleshooting
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . 12-1
Appendix A. Glossary
Table of Contents

Chapter 1. Introduction
Aerial Platform Features
The aerial platform is a self-propelled scissors lift that has
been designed for indoor use only, to raise personnel,
theirtools,andmaterialtotheworkstation.Theplatformis
raised and lowered with a hydraulic cylinder. A hydraulic
motor on each of the front drive wheels provides power to
move the aerial platform.
The standard machine includes the following features.
●Proportional drive and lift up control
●Driveable at full height
●Drive motion alarm
●Non-marking tires
●Automatic pothole protection system
●Level sensor with drive/lift interlock
●Hour meter
●Manual lowering valve
●Lockable battery disconnect switch
●Tie-down lugs
●Lifting lugs
●Heavy duty battery charger with ammeter
●Swing-outhydraulicandelectricalcomponenttrays
●Non-slip metal platform floor
●Three foot platform extension
●125 volt AC electrical outlet with GFCI
●Scissor arm safety support prop
●Lowering alarm
●Removable upper controls
●Forklift loadable from three sides
●Rear forklift pockets
●Chain entry gate
●Five year warranty
The aerial platform has been manufactured to conform
toallapplicable requirementsofthefollowing organiza-
tions.
●Occupational Safety and Health Administration
(OSHA)
●American National Standards Institute (ANSI)
●Canadian Standards Association (CSA)
●European Standard prEN 280
Options
Thefollowingoptionsmaybeprovidedonthemachine.
●Horn
●Flashing light
●Swinging platform gate
●Battery condition indicator
●EE rating (consult factory)
Operator’s Manual
This manual provides information for safe and proper
operation of the aerial platform. Read and understand
theinformation inthis Operator’sManualbeforeoperat-
ing the aerial platform on the job.
Additional copies of this manual may be ordered from
Snorkel. Supply the model and manual part number
from the front cover to assure that the correct manual
will be supplied.
All information in this manual is based on the latest
product information at the time of publication. Snorkel
reserves the right to make product changes at any time
without obligation.
Safety Alerts
A safety alert symbol is used throughout this manual to
indicate danger and caution instructions. Follow these
instructions to reduce the likelihood of personal injury
andpropertydamage.Thetermsdangerandcautionin-
dicate varying degrees of personal injury or property
damagethatcanresultiftheinstructionisnotfollowed.
Indicates a situation which if not avoided can result
in death or serious injury.
Indicates a situation which if not avoided can result
in minor injury or property damage.
Notes
Notes are used to provide special information or helpful
hints to assist in aerial platform operation, but do not indi-
cate a hazardous situation.
S1930 – 0361266 1-1
ADANGER
ACAUTION

Operation
The aerial platform has built-in safety features and has
beenfactory testedforcompliance withSnorkelspecifi-
cations and industry standards. However, any person-
nelliftingaerialplatformcanbepotentiallydangerousin
the hands of untrained or careless operators.
The potential for an accident increases when the
aerial platform is operated by personnel who are
not trained and authorized. Death or serious injury
can result from such accidents. Read and under-
stand the information in this manual and on the
placards and decals on the machine before operat-
ing the aerial platform on the job.
Training is essential and must be performed by a quali-
fiedperson.Become proficientinknowledgeand actual
operation before using the aerial platform on the job.
Youmustbetrainedandauthorizedtoperformanyfunc-
tions of the aerial platform.Operation of the aerial plat-
form must be within the scope of the machine
specifications.
The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regula-
tionsandsafetyrules oftheiremployerand/oranystate
or federal law.
Maintenance
Every person who maintains, inspects, tests, or repairs
the aerial platform must be qualified to do so.Following
the daily prestart inspection in this Operator’s Manual
will help keep the aerial platform in optimum working
condition. Other maintenance functions must be per-
formed by maintenance personnel who are qualified to
work on the aerial platform.
Do not modify this aerial platform without prior written
consent of the Snorkel Engineering Department.Modi-
ficationmayvoidthewarranty, adverselyaffectstability,
or affect the operational characteristics of the aerial
platform.
Manual of Responsibilities
All owners and users of the aerial platform must read,
understand, and comply with all applicable regulations.
Ultimate compliance to OSHA regulations is the re-
sponsibility of the user and their employer.
ANSI publications clearly identify the responsibilities of
all personnel who may be involved with the aerial plat-
form. A reprint of the “Manual of Responsibilities for
Dealers, Owners, Users, Operators, Lessors and Les-
sees of ANSI/SIA A92.6-1999 Self-Propelled Elevating
Work Platforms” is available from Snorkel dealers or
from the factory upon request.
Copies are also available from:
Scaffold Industry Association
20335 Ventura Blvd.Suite 310
Woodland Hills, CA 91364-2471 USA
Additional Information
For additional information contact your local dealer or
Snorkel at:
Snorkel International, Inc.
P.O. Box 1160
St. Joseph, MO 64502-1160 USA
816-364-0317
http://www.snorkelusa.com
1-2 S1930 – 0361266
Chapter 1. Introduction
ADANGER

Chapter 2. Specifications
Component Identification
S1930 – 0361266 2-1
Guardrails
Platform
Scissors
Structure
Chassis
Platform Extension
Upper
Controls
Operator’s
Manual Holder
Lower
Controls
HydraulicTrayonRightSide
Battery Tray on Left Side
Entry Step
Ground Strap
Front Rear
Toeboards
Pothole
Protector Skid

2-2 S1930 – 0361266
Chapter 2. Specifications
Aerial Platform
Working height 25′(7.6 m)
Maximum platform height 19′(5.8 m)
Turning radius (Right turn)
Inside 5.0″(12.7 cm)
Outside 64.5″(1.64 m)
Wheelbase 4′6″(1.37 m)
Ground clearance
Pothole protector raised 2.5″(6.3 cm)
Pothole protector lowered 0.75″(1.9 cm)
Maximum wheel load 1,416 lbs (642 kg)
Maximum floor pressure 175 psi (12.3 kg/cm²)
Weight, GVW
Approximate 3,040 lbs (1,379 kg)
Stowed width 30″(76.2 cm)
Stowed length 6′2″(1.9 m)
With step removed 5′6″(1.7 m)
Stowed height 6′7″(2.0 m)
Platform
Dimensions
Main 29″x 61.5″(74 cm x 156 cm)
Extension 24″x 36″(61.0 cm x 91.4 cm)
Guardrail height
Main 39″(1.0 m)
Extension 39″(1.0 m)
Toeboard height 6″(15.2 cm)
Rated work load
Total 500 lb (227 kg)
Extension 250 lb (113 kg)
Maximum number of occupants 2 people
AC outlet 120 V, 17.4 amp
Function Speed
Platform raise 12 to 20 seconds
Platform lower 20 to 26 seconds
Drive
Platform raised less than 7′(2.1 m)
0 to 2 mph (0.6 to 3.2 km/h)
Platform raised more than 7′(2.1 m)
0 to 0.4 mph (0 to 0.6 km/h)
Drive System
Standard 2-wheel drive
Gradeability 20%
Drive/Lift Level Sensor Interlock
Side to side 2°
Front to rear 4°
Tires
Solid rubber 4″x 12″(10.2 cm x 30.5 cm)
Electrical System
Voltage 24 V DC negative chassis ground
Source 4-6 V 220 amp hour batteries
Fluid recommended distilled water
Hydraulic System
Maximum pressure 2,800 psi (19,305 kPa)
Reservoir capacity 3 US gal (11.4 l)
System capacity 3.5 US gal (13.2 l)
Maximum operating temperature 160°F (71°C)
Hydraulic fluid recommended
Above 10°F (-13°C) Mobil DTE-13M (ISO VG32)
Below 10°F (-13°C) Mobil DTE-11M (ISO VG15)
Ambient Air Temperature Operating Range
Fahrenheit 0°F to 110°F
Celsius -18°C to 43°C
General Specifications

Chapter 3. Safety
Knowledgeoftheinformationinthismanual,andproper
training, provide a basis for safely operating the aerial
platform.Know the location of all controls and how they
operatetoactquicklyandresponsiblyinanemergency.
Safety devices reduce the likelihood of an accident.
Never disable, modify, or ignore any safety device.
Safety alerts in this manual indicate situations where
accidents may occur.
If any malfunction, hazard or potentially unsafe condi-
tionrelatingtocapacity,intendeduse,orsafeoperation
is suspected, stop aerial platform operation and seek
assistance.
The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regula-
tionsandsafetyrules oftheiremployerand/oranystate
or federal law.
Electrocution Hazards
Theaerialplatformismadeofmetal componentsand is
not insulated. Regard all conductors as energized. Do
not operate outside during a thunderstorm.
Minimum Safe Approach Distance
Minimum safe approach distances to energized power
linesandtheirassociatedpartsmustbeobservedwhile
operating the aerial platform.
The aerial platform is not electrically insulated.
Deathorseriousinjurycanresultfromcontactwith,
or inadequate clearance from, an energized con-
ductor. Do not go closer than the minimum safe ap-
proach distance as defined by ANSI.
ANSI publications define minimum distances that must
be observed when working near bus bars and ener-
gized power lines. Table 1 and Figure 3 are reprinted
courtesy of Scaffold Industry Association, ANSI/SIA
A92.6, page 36.
Voltage range
(phase to phase) Minimum safe approach distance
(Feet) (Meters)
0 to 300V Avoid contact
Over 300V to 50kV 10 3.05
Over 50kV to 200kV 15 4.60
Over 200kV to 350kV 20 6.10
Over 350kV to 500kV 25 7.62
Over 500kV to 750kV 35 10.67
Over 750kV to 1000kV 45 13.72
S1930 – 0361266 3-1
Table 1—Minimum Safe Approach Distance
Figure 3—Minimum Safe Approach Distance
ADANGER

Prestart Inspection
Perform a prestart inspection before each shift as de-
scribed in Chapter 8. Do not use the aerial platform on
thejobunlessyouaretrainedandauthorizedtodoso.
Work Place
Inspection and Practices
Do not use the aerial platform as a ground connection
when welding. The welding ground clamp must be at-
tachedtothe samestructurethatisbeingwelded.Elec-
trical current flow can be very intense, causing serious
internal damage to some components.
Inspect the area before and during aerial platform use.
Thefollowingaresomepotentialhazardsthatmaybein
the work place.
●Debris
●Slopes
●Drop-offs or holes
●Bumps and floor obstructions
●Overhead obstructions
●Unauthorized persons
●High voltage conductors
●Wind and weather conditions
●Inadequate surface and support to withstand load
forces appliedbytheaerialplatform inalloperating
configurations
Beforeusingthe aerialplatform inanyhazardous(clas-
sified) location, make certain it is approved and of the
typerequiredbyANSI/NFPA505forusein that particu-
lar location.
Know and understand the job site traffic-flow patterns and
obey the flagmen, road signs, and signals.
While operating the aerial platform, a good safety prac-
ticeistohavequalifiedpersonnelintheimmediatework
area to:
●Help in case of an emergency
●Operate emergency controls as required
●Watch for loss of control by platform operator
●Warn the operator of any obstructions or hazards
that may not be obvious to them
●Watch for soft terrain, sloping surfaces, drop-offs,
etc. where stability could be jeopardized
●Watchforbystandersandnever allowanyoneto be
under, or to reach through the scissors structure
while operating the aerial platform
Pinch points may exist between moving compo-
nents. Death or serious injury can result from be-
coming trapped between components, buildings,
structures, or other obstacles. Make sure there is
sufficient clearance around the machine before
moving the chassis or platform. Allow sufficient
room and time to stop movement to avoid contact
with structures or other hazards.
Always look in the direction of movement. Drive with
careandatspeedscompatiblewiththeworkplacecon-
ditions.Usecautionwhendrivingoverroughground,on
slopes, and when turning.Do not engage in any form of
horseplay or permit riders any place other than in the
platform.
Secureallaccessories,containers,tools,andotherma-
terials in the platform to prevent them from accidentally
falling or being kicked off the platform. Remove all ob-
jects that do not belong in or on the aerial platform.
Never steady the platform by positioning it against an-
other platform. Do not use boards, or other temporary
means to support or level the aerial platform.
Donotoperatetheaerialplatformifit isdamagedor not
functioning properly. Qualified maintenance personnel
must correct the problem before putting the aerial plat-
form back into service.
Operation
Usethreepointsofsupportwhen enteringorexitingthe
platform. For example, use two hands and one foot
when climbing into the platform.
Makesuretheareabelowtheplatformisfreeofperson-
nel before lowering.
Keep both feet positioned firmly on the platform floor.
Operate the controls slowly and deliberately to avoid
jerky and erratic operation. Always stop the controls in
neutral before going in the opposite direction.
Donotdismount whiletheaerialplatform isinmotion or
jump off the platform.
Properly stow the aerial platform and secure it against
unauthorizedoperationattheendofeachworkday,be-
fore transporting, or if it is left unattended.
Tip-Over and Falling Hazards
Operatethe aerial platformonlyonafirm, flat,levelsur-
face capable of withstanding all load forces imposed by
the aerial platform in all operating conditions. Refer to
the General Specifications chart for the maximum
wheel load, maximum floor pressure, and drive/lift level
sensor interlock information. Raise the platform only
when the aerial platform is on level ground.
3-2 S1930 – 0361266
Chapter 3. Safety
ADANGER

The aerial platform can tip over if it becomes unstable.
Death or serious injury can result from a tip-over acci-
dent.Donotdriveorpositiontheaerialplatformforele-
vatedusenearanydrop-off,hole,slope,softoruneven
ground, or other tip-over hazard.
Do not operate the aerial platform within 4(1.2 m) of
any drop-off or hole.
It is best not to transfer from the platform to another struc-
tureorfromthestructuretothe platform,unlessthatisthe
safest way to do the job.Judge each situation separately
takingtheworkenvironmentintoaccount.Ifitisnecessary
to transfer from the platform to another structure the fol-
lowing guidelines apply:
1. Ifyouare usingafallrestraint,transferyouranchor-
age from one structure to the other before stepping
across.
2. Remember that you might be transferring to a struc-
ture where
personal fall arrest is required.
3. Use the platform entrance, do not climb over the
guardrails.
Donotraisethe platformoutdoorsorinthewind.Donot
add anything to the aerial platform that will increase the
wind loading such as billboards, banners, flags, etc.
Never operate the aerial platform without all parts of the
guardrail system in place and the safety chain or gate
closed.Makesurethatallprotectiveguards,cowlings,and
doors are securely fastened.
Donotexceedtheplatform capacityasindicatedonthe
platform rating placard on the platform. Do not carry
loads that extend beyond the platform guardrails without
prior written consent from Snorkel.
Do not operate the aerial platform from trucks, trailers,
railway cars, floating vessels, scaffolds, or similar
equipment unless the application is approved in writing
by Snorkel.
Do not use the aerial platform as a crane, hoist, jack, or
for any purpose other than to position personnel, tools,
and materials.
Donot climbontheguardrailsoruseladders,planks,or
other devices to extend or increase the work position
from the platform.
Takecare to preventrope,electricalcords,andhoses,etc.,
from becoming caught in or on the aerial platform. If the
platform or scissors structure becomes caught on an adja-
cent structure or other obstacle and is prevented from nor-
mal motion, reverse the control to free the platform. If
control reversal does not free the platform, evacuate the
platform before attempting to free it.
Electrical System
Charge the batteries in a well-ventilated area free of
flame, sparks, or other hazards that might cause fire or
explosion.
Donotoperateanyoftheaerialplatformfunctionswhile
the battery charger is plugged in.
Batteries give off hydrogen and oxygen that can
combineexplosively.Deathorseriousinjurycanre-
sult from a chemical explosion. Do not smoke or
permit open flames or sparks when checking the
batteries.
Battery acidcan damagethe skinand eyes.Serious
infection or reaction can result if medical treatment
is not given immediately.Wear face and eye protec-
tion when working near the batteries.
Batteries contain sulfuric acid that can damage your
eyes or skin on contact. Wear a face shield, rubber
gloves, and protective clothing when working around
batteries. If acid contacts your eyes, flush immediately
with clear water and get medical attention. If acid con-
tacts your skin, wash off immediately with clear water.
Hydraulic System
The hydraulic system contains hoses with hydraulic
fluid under pressure.
Hydraulic fluid escaping under pressure can have
enough force to inject fluid into the flesh. Serious
infection or reaction can result if medical treatment
is not given immediately.In case of injury by escap-
inghydraulicfluid,seekmedicalattentionatonce.
Do not place your hand or any part of your body in front
of escaping hydraulic fluid.Use a piece of cardboard or
wood to search for hydraulic leaks.
Placards and Decals
The aerial platform is equipped with placards and de-
cals that provide instruction for operation and accident
prevention. Do not operate the aerial platform if any
placards or decals are missing or not legible.
S1930 – 0361266 3-3
Chapter 3. Safety
ADANGER
ADANGER
ADANGER

Chapter 4. Safety Devices
This aerial platform is manufactured with safety de-
vices, placards, and decals to reduce the likelihood of
an accident.For the safety of all personnel, do not dis-
able,modify,orignoreanysafetydevice.Safetydevices
are included in the daily prestart inspection.
Thepotential foranaccidentincreaseswhensafety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable, or override any safety device.
If any safety devices are defective, remove the aerial
platform from service until qualified maintenance per-
sonnel can make repairs.
Emergency Stop Controls
Thereis anemergencystopcontrolatthelowerandup-
per controls.
At the lower controls, the emergency stop is a
two-position push button (refer to Figure 4.1).
Pushthe emergencystopbuttonintodisconnect power
to all control circuits. Pull the button out to restore
power.
Figure 4.1—Lower Controls
Note
The lower controls override the upper controls. If the
upper control emergency stop button is engaged, the
lower controls can still be used to operate the aerial
platform.
At the upper controls, the emergency stop is a
two-position push button (refer to Figure 4.2).
Pushthe emergencystopbuttonintodisconnect power
to the upper control circuits. Pull the button out to re-
store power.
Figure 4.2—Upper Controls
Drive Motion Alarm
Whenthejoystickismovedoutofneutraltodrivetheae-
rial platform, the alarm emits a loud beeping sound to
warn personnel in the work area to stand clear.
Pothole Protector Skids
The pothole protector skids automatically lower when
the platform is elevated approximately 24″(61 cm).
Ground clearance is reduced from 21/2″(6.3 cm) to 3/4″
(1.9 cm) when the skids lock into position (refer to Fig-
ure 4.3).
Figure 4.3—Pothole Protector Skids
The aerial platform can tip over if it becomes unsta-
ble. Death or serious injury can result from a
tip-over accident.Do not drive or position the aerial
platform for elevated use within four feet of any
drop-off, hole, or other tip-over hazard.
This protection system limits the tilt angle if a wheel is
driven into a drop-off or hole. This greatly reduces the
likelihood of the aerial platform tipping over.
The pothole protection system is for added protection
and does not justify operating near drop-offs or holes.
S1930 – 0361266 4-1
ADANGER
ADANGER
Emergency Stop
Pothole Protector Skid
Emergency Stop

Drive/Lift Pothole
Protector Interlock
The aerial platform drive and lift functions are inter-
lockedthroughalimit switchthat senseswhetherornot
the pothole protection linkage is locked into position.
The drive/lift pothole interlock operates when the plat-
form is elevated approximately 7′(2.1 m).
If an obstruction under the skids, or some other impair-
ment prevents the skids from locking into position, the
drive and lift functions will not operate and an alarm will
sound.
Lower the platform and remove the obstruction when
the drive/lift pothole protector interlock alarm sounds.
Drive/Lift Level Sensor Interlock
The aerial platform drive and lift functions are inter-
lockedthroughalevelsensorsystem.Thedrive/liftlevel
sensorinterlockoperateswhentheplatformiselevated
approximately 7′(2.1 m).
Ifthechassisistiltedmorethan2degreesside-to-sideor
morethan4degreesfront-to-rear,the driveandlift func-
tions will not operate and an alarm will sound.
Lowertheplatformand driveto alevelsurface whenthe
drive/lift level sensor alarm sounds.
Thedrive/liftlevelsensorsystemisforaddedprotection
and does not justify operating on anything other than
firm, flat, level surfaces.
Lowering Alarm
When the joystick is moved out of neutral to lower the
platform, the alarm emits a loud beeping sound to warn
personnel in the work area to stand clear.
Pinch points exist on the scissors structure. Death
or serious injury can result if the scissors structure
lowers onto personnel within the scissors arms or
under the raised platform.Stand clear while raising
and lowering the platform.
Becarefulwhenloweringtheplatform.Keep hands and
fingersawayfromthescissorsstructurescomponents.
Emergency Lowering Lever
Theemergencyloweringlevermaybeusedtolowerthe
platformif thereisamalfunctioninthehydraulicorelec-
tricalsystem.Theleverismountedatthefrontoftheae-
rial platform (refer to Figure 4.4).
Figure 4.4—Emergency Lowering Lever
Theemergencyloweringlevermaybeusedtolowerthe
scissorsarmsontothesafetypropbeforeinspectingthe
machine.
Safety Prop
The safety prop (refer to Figure 4.5) is used to support
the scissors structure when access to the scissors arm
components or the chassis is required.Always use the
safety prop when the platform is raised during inspec-
tion and maintenance.
Figure 4.5—Safety Prop
4-2 S1930 – 0361266
Chapter 4. Safety Devices
ADANGER
Emergency Lowering Lever
Safety Prop

Guardrails
The guardrail system includes a top rail, mid rail, and
toeboardsaroundthe sides oftheplatform (refertoFig-
ure 4.6).
Figure 4.6—Guardrails
A safety chain or an optional swinging gate allows for
access to the platform. The gates close automatically
after entering or exiting the platform. The chain or gate
is part of the guardrail system and must be securely
fastened after entering the platform.
Ground Fault Circuit Interrupter
The electrical power outlet (refer to Figure 4.7), at the
platform contains a ground fault circuit interrupter
(GFCI)tohelppreventaccidentalconductorgrounding.
Figure 4.7—Electrical Power Outlet
Tilt Alarm
An alarm will sound if the aerial platform chassis is out
of level more than 11/2degrees when the platform is
raised.
The aerial platform can tip over if it becomes unsta-
ble. Death or serious injury can result from a
tip-over accident.Do not drive or position the aerial
platform for elevated use near any drop-off, hole,
slope, soft or uneven ground,or other tip-over haz-
ard.
Completely lower the platform and then drive to a level
surface when the tilt alarm sounds.
Thetiltalarmisforaddedprotectionanddoesnotjustify
operating on anything other than firm, flat, level sur-
faces.
Horn
The optional horn may be used to warn personnel on
the ground.The horn is operational when the machine
is set up for operation from the upper controls.
Flashing Light
Anoptionalredoramberflashinglightmaybelocatedat
the rear of the aerial platform (refer to Figure 4.9).The
flashinglightwarns personnel thattheaerialplatform is
in the area.
Figure 4.9—Flashing Light
The light flashes at about one flash per second when
the machine is set up for operation from the upper con-
trols.
S1930 – 0361266 4-3
Chapter 4. Safety Devices
ADANGER
Top Rail
Mid Rail
Toeboard Entry Chain
Flashing Light

Chapter 5. Gauges
The aerial platform is equipped with several gauges to
monitor the condition of the machine before and during
operation.
Hour Meter
Thehourmeterislocatedonthelowercontrolpanel(re-
fer to Figure 5.1). It measures the accumulated aerial
platform operating time.
Figure 5.1—Lower Controls
Ammeter
The ammeter is located on the battery charger (refer to
Figure 5.2). When the batteries are charging, the am-
meterdisplaysthelevelofcurrent flowfromthe charger
to the batteries.
Figure 5.2—Battery Charger
Battery Condition Indicator
The optional battery condition indicator (refer to Figure
5.3)is locatedon theupper controlpanel.Itdisplaysthe
level of available battery power to operate the aerial
platform. The number one on the scale indicates full
power and zero indicates no power.
Figure 5.3—Battery Condition Indicator
SL 19e – 0361265 5-1
Ammeter
Battery
Condition Indicator
Hour Meter

Chapter 6. Batteries
Thebattery traycontains4, 220amphour,6voltbatter-
ies.These batteries supply 24 volt DC electrical power
to operate the aerial platform drive and platform control
systems. Proper machine operation depends on well
maintained and charged batteries.
General Maintenance
Always keep the batteries clean, free of dirt and corro-
sion. A film on top of the battery can accelerate dis-
charge.
Cold reduces battery capacity and retards charging.
Heat increases water usage and can result in over-
charging. Very high temperatures can cause thermal
runawaywhichmayleadtoanexplosionorfire.Consult
a battery charger specialist if extreme temperature use
is unavoidable.
Battery acidcan damagethe skinand eyes.Serious
infection or reaction can result if medical treatment
is not given immediately.Wear face and eye protec-
tion when working near the batteries.
Use distilled water to refill the batteries. Avoid water
containing metallic solids such as iron.
Charging
Fullyrechargethebatteries,immediatelyafteruse.One
charging cycle per day is preferred.Fully charged bat-
teries perform best. The deeper the discharge, the
fewer number of cycles a battery will deliver.Deep dis-
charges deteriorate the battery quicker than light shal-
low cycles.
An overly discharged battery may need to be cycled a
fewtimesbeforeitcanfullyrecover.Ifabatterybeginsto
heat before becoming fully charged, it may be neces-
sarytorechargeanddischargethebatteryafewtimes.
The aerial platform is equipped with an automatic bat-
tery charger that will completely recharge the batteries
and turn off after the charge cycle is completed.
Batteries give off hydrogen and oxygen that can
combineexplosively.Deathorseriousinjurycanre-
sult from a chemical explosion. Charge the batter-
ies only in a well ventilated area away from sparks
or flame.
The batteries can be overcharged and/or damaged
if the charger fails to shut off automatically. Do not
leavethebatterychargeronformorethantwodays.
It may take from 11/2to 16 hours to recharge the batter-
ies depending on the amount of discharge.If the charg-
ing cycle exceeds 16 hours without the batteries being
fully recharged, shut off the charger and have the bat-
teries checked.
Use the following procedure to charge the batteries.
1. Turn the battery disconnect switch off (refer to Fig-
ure 6.1). The switch is next to the latch on the bat-
tery tray.
Figure 6.1—Battery Tray
2. Check the battery water level.Add water to individ-
ualcellsonly iftheplates are exposed.Replace the
battery caps.
3. Plug the charger into a properly grounded outlet
(115 volt AC, 60 Hz) using a 3 conductor, 14 gauge
or larger extension cord. The extension cord must
beasshortaspossibleandingoodelectricalcondi-
tion. The charger will turn on three to five seconds
afteracompleteelectricalconnectionismade.The
ammeter (refer to Figure 6.1) will indicate near 20
amps initially then taper off to 5 to 10 amps as the
batteries charge.
Note
If the batteries are fully charged when the charger is
pluggedin,theammeter willinitiallyread15 to20amps
then quickly read zero.
4. Leavethechargerpluggedinuntilitshutsitselfoff.
5. Unplugtheextensioncord afterthebattery charger
turns itself off. Allow the batteries to cool off after
charging.
6. Check the battery water level.Add water to individ-
ualcellsonly iftheplates are exposed.Replace the
battery caps.
S1930 – 0361266 6-1
ADANGER
ADANGER
ACAUTION
Battery
Disconnect Switch