Snorkel SL30SL User manual

February 2018
Part Number 8210037
MANUAL
OPERATOR’S
Serial number 50303 and after
Replaces 8210037 February 2011

The aerial platform is not electrically insulated. Death or serious injury will result from contact
with, or inadequate clearance from, an energized conductor.
Do not go closer than the minimum safe approach distance as dened by the Minimum 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, elevating assembly, or any part of the aerial platform contacts a high-voltage electrical
conductor, the entire machine can become electrically charged.
If that happens, remain on the machine and do not contact any other structure or object. This includes
the ground, adjacent buildings, poles, and any other objects that are not part of the 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 creating 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, scissor 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, recognizing
that death or serious injury can result from contact with an energized conductor.
California
Proposition 65 Warning
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.
California
Proposition 65 Warning
Diesel and gasoline engine exhaust and some of its
constituents are known by the State of California to cause
cancer, birth defects or other reproductive harm.

SL30SL – 8210037
Table of Contents
Electrical Danger ............................ Inside Front Cover
California Proposition 65 ................ Inside Front Cover
Chapter 1 – Introduction
Aerial Platform Features.............................................1
Options .......................................................................1
Operator’s Manual......................................................1
Safety Alerts ...............................................................1
Operation....................................................................1
Maintenance...............................................................2
Manual of Responsibilities..........................................2
Additional Information.................................................2
Chapter 2 – Specications
Component Identication............................................3
General Specications................................................4
Engine Specications .................................................5
Engine Oil Viscosity....................................................5
Chapter 3 – Safety
Electrocution Hazards ................................................7
Minimum Safe Approach Distance .............................7
Prestart Inspection......................................................8
Work Place Inspection and Practices.........................8
Operation....................................................................8
Tip-Over and Falling Hazards.....................................9
Electrical System........................................................9
Hydraulic System........................................................9
Engine and Fuel Handling Precautions ....................10
Placards and Decals.................................................10
Chapter 4 – Safety Devices
Emergency Stop Controls......................................... 11
Upper Controls Emergency Stop Override............... 11
Emergency Lowering Knob ...................................... 11
Guardrails.................................................................12
Lanyard Anchors.......................................................12
Tilt Alarm...................................................................12
Speed Level..............................................................12
Engine Protection Systems ......................................13
High Engine Temperature Alarm ...........................13
Low Oil Pressure Alarm.........................................13
Horn Button ..............................................................13
Lowering Alarm.........................................................13
All Motion Alarm........................................................13
Flashing Light ...........................................................13
Chapter 5 – Gauges and Displays
Display Screen .........................................................15
Hour Meter ............................................................15
Fuel Gauge...............................................................15
Engine Oil.................................................................15
Hydraulic Fluid Level Gauge ....................................16
Engine Air Filter Gauge ............................................16
Chapter 6 – Controls
Lower Controls .........................................................17
On/Off Switch ........................................................17
Preheat Button ......................................................17
Start Button ...........................................................17
Emergency Stop Button ........................................17
Upper Controls Emergency Stop Override............17
Enable Button........................................................17
Platform Raise Button ...........................................17
Platform Lower Button...........................................17
Upper Controls .........................................................18
Preheat Button ......................................................18
Start Button ...........................................................18
Emergency Stop Button ........................................18
Joystick .................................................................18
Interlock Switch .....................................................19
Steer Switch ..........................................................19
High Speed Drive ..................................................19
Low Speed Drive...................................................19
Platform Raise/Lower Button ................................19
Speed Level Button...............................................19
Horn Button ...........................................................20
Chapter 7 – Prestart Inspection
Operator’s Manual....................................................21
Engine ......................................................................21
Oil Level ................................................................21
Coolant..................................................................21
Radiator.................................................................22
Fuel Tank...............................................................22
Fuel Line ...............................................................22
Air Filter.................................................................22
Electrical System......................................................22
Battery Terminals...................................................23
Cables and Wiring Harness......................................23
Hydraulic System......................................................23
Fluid Level.............................................................23
Fluid Filter .............................................................24
Hoses, Tubes, and Fittings....................................24
Tires and Wheels......................................................24
Lower Control Station...............................................24
Operating Controls ................................................25
Emergency Stop....................................................25
Emergency Lowering................................................25
Upper Controls Emergency Stop Override...............26
Lowering Alarm.........................................................26
All Motion Alarm........................................................26
Flashing Light ...........................................................26
Structures .................................................................26
Weldments ............................................................26
Fasteners ..............................................................26
Upper Control Station...............................................26
Guardrail System ..................................................26
Lanyard Anchors.......................................................27
Operating Controls ................................................27
Emergency Stop....................................................28
Horn Button ...........................................................28
Placards and Decals.................................................28
Prestart Inspection Checklist....................................32

Table of Contents
SL30SL – 8210037
Chapter 8 – Operation
Cold Weather Start Up .............................................33
Manually Warming The Hydraulic System ............33
Preheat Button ......................................................33
Preparing for Operation............................................33
Lower Controls .........................................................34
Upper Controls .........................................................34
Platform ....................................................................35
Raising and Lowering............................................35
Leveling.................................................................35
Driving and Steering.................................................36
Drive Speeds ........................................................36
Lowering Alarm.........................................................36
All Motion Alarm........................................................36
Gradeability ..............................................................36
Theoretical Gradeability ........................................36
Actual Gradeability ................................................37
Percent vs. Degree of Slope .................................37
Driving on a Slope.................................................37
Calculating Percent Grade ....................................38
Machine Gradeability ............................................38
Fold Down Guardrails...............................................38
Chapter 9 – Stowing and Transporting
Stowing.....................................................................41
Transporting .............................................................41
Lifting With a Forklift..............................................41
Driving ...................................................................42
Winching ...............................................................42
Hoisting .................................................................43
Securing for Transport...........................................44
Chapter 10 – Emergency Operation
Emergency Lowering Knob ......................................45
Upper Controls Emergency Stop Override...............45
Towing ......................................................................45
Chapter 11 – Troubleshooting
Troubleshooting Chart ..............................................47
Appendix A – Glossary
Limited Warranty

SL30SL – 8210037 1
Chapter 1 – Introduction
Aerial Platform Features
The aerial platform is a self-propelled work platform that
has been designed to raise personnel, their tools, and
material to the workstation. The platform is raised and
lowered with hydraulic cylinders. A hydraulic motor on
each wheel provides power to move the aerial platform.
The standard machine includes the following features:
yLowering alarm
yHour meter
ySpeed level – automatic powered platform leveling
yOscillating front axle
yAir lled tires
yDual multi-disk brakes
yOne-hand, proportional controls
yWired for AC outlet on platform
yFold-down guardrails
yFour wheel drive
yDrivable at full height
yTie-down/lifting lugs
yRemovable upper controls
yEmergency lowering system
yKeyed master switch
yCold weather start
yLanyard anchors
yHigh engine temperature shut down
yLow oil pressure shut down
yHorn
yFive year limited warranty
The machine is powered with a Perkins 403C-11 diesel
engine.
The aerial platform has been manufactured, when ap-
plicable, to conform to all applicable requirements of the
following organizations:
yOccupational Safety and Health Administration
(OSHA)
yAmerican National Standards Institute (ANSI)
Options
The following options may be provided on the machine:
yAll motion alarm
yFlashing light
yCanadian Standards Association (CSA) certication
Operator’s Manual
This manual provides information for safe and proper
operation of the aerial platform. Some information in this
manual refers to options that may or may not be on your
machine. Read and understand the information in this
Operator’s Manual before operating 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, warning, and caution instructions. Follow
these instructions to reduce the likelihood of personal
injury and property damage. The terms danger, warning,
and caution indicate varying degrees of personal injury
or property damage that can result if the instruction is
not followed.
Danger
Indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
This signal word is to be used in the most extreme
situations.
Warning
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Caution
Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
It may also be used to alert against unsafe practices.
Notes
Notes are used to provide special information or helpful
hints to assist in aerial platform operation, but do not
indicate a hazardous situation.
Operation
The aerial platform has built-in safety features and has
been factory tested for compliance with Snorkel speci-
cations and industry standards. However, any personnel
lifting aerial platform can be potentially dangerous in the
hands of untrained or careless operators.
Warning
The potential for an accident increases when the
aerial platform is operated by personnel who are not
trained and authorized. Death or serious injury could
result from such accidents. Read and understand the
information in this manual and on the placards and
decals on the machine before operating the aerial
platform on the job.
Training is essential and must be performed by a quali-
ed person.
yBecome procient in knowledge and actual operation
before using the aerial platform on the job.
yThe operator must be trained and authorized to per-
form any functions of the aerial platform.

Chapter 1 – Introduction
2 SL30SL – 8210037
yOperation of the aerial platform must be within the
scope of the machine specications.
The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regulations
and safety rules of their employer and/or any state or
federal law.
Maintenance
Every person who maintains, inspects, tests, or repairs
the aerial platform must be qualied to do so. Following
the daily prestart inspection in this Operator’s Manual will
help keep the aerial platform in optimum working condi-
tion. Other maintenance functions must be performed
by maintenance personnel who are qualied to work on
the aerial platform.
Caution
Welding current can be very intense. Damage to elec-
tronic components may result. Connect the ground
clamp as close as possible to the area being welded.
Disconnect battery cables and any microprocessors
and engine control modules before welding on the
machine.
If it becomes necessary to weld aerial platform com-
ponents as a method of repair, take all precautions to
prevent damage to electronic circuitry and devices on
the machine. This includes, but may not be limited to,
disconnecting battery cables and electronic devices.
Do not modify this aerial platform without prior written con-
sent of the Snorkel Engineering Department. Modication
may void the warranty, adversely affect stability, 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 respon-
sibility of the user and their employer.
ANSI publications clearly identify the responsibilities of all
personnel who may be involved with the aerial platform.
A reprint of the “Manual of Responsibilities for Dealers,
Owners, Users, Operators, Lessors and Lessees of
ANSI/SIA A92.6–2006 Self-Propelled Elevating Work
Platforms” is available from Snorkel dealers or from the
factory upon request.
Copies are also available from:
Scaffold Industry Association, Inc.
P. O. Box 20574
Phoenix, AZ 85036-0574 USA
Additional Information
For additional information contact your local dealer or
Snorkel at:
Snorkel International
P.O. Box 1160
St. Joseph, MO 64502-1160 USA
1-800-255-0317
http://www.snorkellifts.com

SL30SL – 8210037 3
Chapter 2 – Specications
Component Identication
Toeboards
Elevating
Assembly
Right Side
Platform
Front
Left
Guardrail
Rear
Left Side
Entry
Steps
Lower
Controls
Operator’s
Manual
Chassis
Emergency
Lowering Valve
Upper
Controls
Front
Rear
Entry
Gate
Tie-Down/Lifting
Lugs
Tie-Down/Lifting
Lugs
Engine Compartment
Engine • Hydraulic Pump • Battery
Fuel Tank
Hydraulic Compartment
Hydraulic Reservoir • Hydraulic Fluid Filter
Rear Guardrail
Right
Guardrail
Front
Guardrail

Chapter 2 – Specications
4 SL30SL – 8210037
General Specications
Aerial Platform
Working height 36′ (10.97 m)
Maximum platform height 30′ (9.14 m)
Turning radius
Inside 13′(3.96 m)
Wheelbase 100″ (2.54 m)
Ground clearance
Axle 8″ (20.32 cm)
Chassis 12.6″ (32 cm)
Maximum wheel load 2,502 lbs (1,135 kg)
Maximum ground pressure 32 psi (220 kPa)
Empty vehicle weight (EVW)
Approximate 7,090 lbs (3,216 kg)
Stowed width 84″(2.13 m)
Stowed length 14′ 5″ (4.39 m)
Stowed height 8′6.5″ (2.6 m)
Platform
Dimensions 67.5″x 166.5″ (1.71 m x 4.22 m)
Guardrail height 43.5″ (1.11m)
Toeboard height 6″(152 mm)
Rated work load
Total 1,300 lbs (590 kg)
Maximum number of occupants 5 people
Function Speed
Platform raise 24 seconds
Platform lower 36 seconds
Drive speed
Elevated 0.45 mph (0.8 km/h)
Stowed 3.1 mph (5.0 km/h)
Drive System
Standard Four wheel drive
Gradeability – theoretical 38%
Maximum drive height 30′ (9.14 m)
Platform Leveling
Side-to-side 13 degrees
Front-to-rear 9 degrees
Tires
Air lled 26 x 12.00 - 16.5 NHs
Electrical System
Voltage 12 V DC
Source 550 CCA, 12 V battery
Fluid recommended Distilled water
Hydraulic System
Maximum pressure 3,000 psi (20,700 kPa)
Reservoir capacity 19.5 US gal (74.0 l)
System capacity 15 US gal (56.7 l)
Maximum operating temperature 200°F (93°C)
Hydraulic uid recommended
Above 10°F (-13°C) ISO VG32
Below 10°F (-13°C) ISO VG15
Engine
Diesel Perkins 403C-11
Fuel Tank Capacity
Diesel 12.4 US gal (47 l)
Ambient Air Temperature Operating Range
Fahrenheit 0°F to 110°F
Celsius -18°C to 43°C
Maximum Wind Speed
Gust or steady 28 mph (45 km/h)

Chapter 2 – Specications
SL30SL – 8210037 5
Engine Specications
Engine Displacement Fuel Grade Coolant Oil
Capacity
Oil
Grade
Perkins
403C-11
69 cu. in.
(1.13 l)
Diesel
ASTM No. 2D fuel with a minimum Cetane
number of 45.1For operating temperatures
below 32°F (0°C) use winterized No. 2D.
50% Water
50% Ethylene
Glycol2
4.6 US qt.
(4.4 l)
API
CH43
Note 1: Refer to the Perkins Operator’s Manual for specic fuel recommendations and specications.
Note 2: Refer to the Perkins Operator’s Manual for specic coolant recommendations and specications.
Note 3: Refer to the Perkins Operator’s Manual for specic lubricating oil recommendations and specications.
Engine Oil Viscosity
Engine Ambient
Temperature
Engine Oil
Weight
Perkins
403C-11
Above 77°F
(25°C) SAE 30W or 10W30
32°F to 77°F
(0°C to 25°C) SAE 20W or 10W30
Below 32°F
(0°C) SAE 10W

Chapter 2 – Specications
6 SL30SL – 8210037

SL30SL – 8210037 7
Chapter 3 – Safety
Knowledge of the information in this manual, and proper
training, provide a basis for safely operating the aerial plat-
form. Know the location of all controls and how they oper-
ate to act quickly and responsibly in an emergency.
Safety devices reduce the likelihood of an accident.
yNever disable, modify, or ignore any safety device.
ySafety alerts in this manual indicate situations where
accidents may occur.
If any malfunction, hazard or potentially unsafe condition
relating to capacity, intended use, or safe operation is sus-
pected, stop aerial platform operation and seek assistance.
The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regulations
and safety rules of their employer and/or any state or
federal law.
Electrocution Hazards
The aerial platform is made of metal components and 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
lines and their associated parts must be observed while
operating the aerial platform.
Danger
The aerial platform is not electrically insulated. Death
or serious injury will result from contact with, or in-
adequate clearance from, an energized conductor.
Do not go closer than the minimum safe approach
distance as dened by ANSI.
ANSI publications dene minimum distances that must
be observed when working near bus bars and energized
power lines. Table 1 and Figure 3 are reprinted courtesy
of Scaffold Industry Association, ANSI/SIA A92.6.
Table 1 – Minimum Safe Approach Distance
Figure 3 – Minimum Safe Approach Distance
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

Chapter 3 – Safety
8 SL30SL – 8210037
Prestart Inspection
Perform a prestart inspection before each shift as de-
scribed in Chapter 7. Do not use the aerial platform on
the job unless you are trained and authorized to do so.
Work Place Inspection and Practices
Do not use the aerial platform as a ground connection
when welding.
yThe welding ground clamp must be attached to the
same structure that is being welded.
yElectrical current ow can be very intense, causing
serious internal damage to some components.
Inspect the area before and during aerial platform use.
The following are some potential hazards that may be in
the work place:
yDebris
ySlopes
yDrop-offs or holes
yBumps and oor obstructions
yOverhead obstructions
yUnauthorized persons
yHigh voltage conductors
yWind and weather conditions
yInadequate surface and support to withstand load
forces applied by the aerial platform in all operating
congurations
Before using the aerial platform in any hazardous (clas-
sied) location, make certain it is approved and of the
type required by ANSI/NFPA 505 for use in that particular
location.
Know and understand the job site trafc-ow patterns and
obey the agmen, road signs and signals.
While operating the aerial platform, a good safety prac-
tice is to have qualied personnel in the immediate work
area to:
yHelp in case of an emergency
yOperate emergency controls as required
yWatch for loss of control by platform operator
yWarn the operator of any obstructions or hazards that
may not be obvious to them
yWatch for soft terrain, sloping surfaces, drop-offs, etc.
where stability could be jeopardized
yWatch for bystanders and never allow anyone to be
under, or to reach through the elevating assembly
while operating the aerial platform
Danger
Pinch points may exist between moving components.
Death or serious injury will result from becoming
trapped between components, buildings, structures,
or other obstacles. Make sure there is sufcient
clearance around the machine before moving the
chassis or platform. Allow sufcient room and time
to stop movement to avoid contact with structures
or other hazards.
Always look in the direction of movement.
yDrive with care and at speeds compatible with the
work place conditions.
yUse caution when driving over rough ground, on
slopes and when turning.
yDo not engage in any form of horseplay or permit rid-
ers any place other than in the platform.
Secure all accessories, containers, tools and other ma-
terials in the platform to prevent them from accidentally
falling or being kicked off the platform. Remove all objects
that do not belong in or on the aerial platform.
Never steady the platform by positioning it against an-
other platform.
Warning
The potential for an accident increases when operat-
ing an aerial platform that is damaged or malfunction-
ing. Death or serious injury could result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
Do not operate the aerial platform if it is damaged or not
functioning properly. Qualied maintenance personnel
must correct the problem before putting the aerial platform
back into service.
Operation
Use three points of support when entering or exiting the
platform. For example, use two hands and one foot when
climbing into the platform.
Never cover the platform oor grating or otherwise ob-
struct your view below. Make sure the area below the
platform is free of personnel before lowering.
Make sure the area below the platform is free of person-
nel before lowering.
Keep both feet positioned rmly on the platform oor.
yOperate the controls slowly and deliberately to avoid
jerky and erratic operation.
yAlways stop the controls in neutral before going in the
opposite direction.
Do not dismount while the aerial platform is in motion or
jump off the platform.
Properly stow the aerial platform and secure it against
unauthorized operation at the end of each work day,
before transporting, or if it is left unattended.

Chapter 3 – Safety
SL30SL – 8210037 9
Tip-Over and Falling Hazards
Operate the aerial platform only on a rm, at, level sur-
face capable of withstanding all load forces imposed by
the aerial platform in all operating conditions. Refer to
the General Specications chart for the maximum wheel
load and ground pressure. Raise the platform only when
the aerial platform is on level ground.
Danger
The aerial platform can tip over if it becomes unsta-
ble. Death or serious injury will 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 hazard.
On scissor lifts, personal fall protection is not required by
ANSI, Federal OSHA, nor Snorkel. However, fall restraint
might be required by work regulations. If so, the user is
responsible for tness and method of use.
It is best not to transfer from the platform to another
structure or from the structure to the platform, unless
that is the safest way to do the job. Judge each situation
separately taking the work environment into account. If
it is necessary to transfer from the platform to another
structure the following guidelines apply:
1. If you are using a fall restraint, transfer your anchor-
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 or
through the guardrails.
Do not operate the aerial platform in windy or gusty condi-
tions. Do not add anything to the aerial platform that will
increase the wind loading such as billboards, banners,
ags, etc.
Never operate the aerial platform without all parts of the
guardrail system in place and the gate closed. Make
sure that all protective guards, cowlings, and doors are
securely fastened.
Do not exceed the platform capacity nor the platform-
extension capacity as indicated on the platform rating
placard on the platform. Do not carry loads that extend
beyond the platform guardrails without prior written con-
sent from Snorkel.
Do not operate the aerial platform from trucks, trailers, rail-
way cars, oating 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.
Do not climb on the guardrails or use ladders, planks,
or other devices to extend or increase the work position
from the platform.
Take care to prevent rope, electrical cords, hoses, etc.,
from becoming caught in or on the aerial platform.
yIf the platform or elevating assembly becomes caught
on an adjacent structure or other obstacle and is
prevented from normal motion, reverse the control to
free the platform.
yIf 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
ame, sparks, or other hazards that might cause re or
explosion.
Do not operate any of the aerial platform functions while
the battery charger is plugged in.
Warning
Batteries give off hydrogen and oxygen that can com-
bine explosively. Death or serious injury could result
from a chemical explosion. Do not smoke or permit
open ames or sparks when checking the batteries.
Battery acid can damage the skin and eyes. Serious
infection or reaction could result if medical treatment
is not given immediately. Wear face and eye protec-
tion when working near the batteries.
yBatteries contain sulfuric acid that can damage your
eyes or skin on contact.
yWear a face shield, rubber gloves, and protective
clothing when working around batteries.
yIf acid contacts your eyes, ush immediately with clear
water and get medical attention.
yIf acid contacts your skin, wash off immediately with
clear water.
Hydraulic System
The hydraulic system contains hoses with hydraulic uid
under pressure.
Danger
Hydraulic uid escaping under pressure can have
enough force to inject uid into the esh. Serious
infection or reaction will result if medical treatment is
not given immediately. In case of injury by escaping
hydraulic uid, seek medical attention at once.
Do not place your hand or any part of your body in front
of escaping hydraulic uid. Use a piece of cardboard or
wood to search for hydraulic leaks.

Chapter 3 – Safety
10 SL30SL – 8210037
Engine and Fuel Handling Precautions
Refer to the engine manufacturer’s Operator’s Manual for
complete information on safe engine operation, mainte-
nance, and specications.
Danger
Engine exhaust contains carbon monoxide, a poi-
sonous gas that is invisible and odorless. Breathing
engine exhaust fumes will cause death or serious
illness. Do not run the engine in an enclosed area or
indoors without adequate ventilation.
Be careful not to run the diesel fuel tank empty. Bleed the
fuel system if air enters the lines between the tank and
the injection pump.
Allow the engine to return to idle before shutting the
engine off.
Do not smoke or permit open ames while fueling or near
fueling operations.
Never remove the fuel cap or ll the fuel tank while the
engine is running or hot. Never allow fuel to spill on hot
machine components.
Maintain control of the fuel ller nozzle when lling the
tank. Spilled fuel is a potential re hazard.
Do not overll the fuel tank. Allow room for expansion.
Clean up spilled fuel immediately.
Tighten the fuel tank cap securely. If the fuel cap is lost,
replace it with an approved cap from Snorkel. Use of a
non-approved cap without proper venting may result in
pressurization of the tank.
Never use fuel for cleaning purposes.
For diesel engines, use the correct fuel grade for the
operating season.
Caution
Engine coolant escaping under pressure may cause
serious burns. Shut the engine off and let it cool
before removing the radiator cap.
Let the engine and radiator cool before adding coolant.
Placards and Decals
The aerial platform is equipped with placards and decals
that provide instruction for operation and accident preven-
tion. Do not operate the aerial platform if any placards or
decals are missing, damaged, or illegible.

SL30SL – 8210037 11
Chapter 4 – Safety Devices
This aerial work platform is manufactured with safety
devices, placards, and decals to reduce the likelihood
of an accident.
yFor the safety of all personnel, do not disable, modify,
or ignore any safety device.
ySafety devices are included in the daily prestart
inspection.
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury could 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 qualied maintenance person-
nel can make repairs.
Emergency Stop Controls
There is an emergency stop control at the lower and
upper controls. Both the lower and upper control emer-
gency stop buttons must be on to operate the machine.
At the lower controls, the emergency stop is a two-posi-
tion red push button (refer to Figure 4.1).
Figure 4.1 – Lower Controls
yPush the emergency stop button inward to disconnect
power to the lower control circuits.
yTwist the button clockwise to restore power.
At the upper controls, the emergency stop is a two-posi-
tion red push button (refer to Figure 4.2).
Push the emergency stop button inward when the
upper controls are not in use to protect against un-
intentional operation.
Emergency
Stop
Upper Controls
Emergency Stop
Override
Figure 4.2 – Upper Controls
yPush the emergency stop button inward to disconnect
power to all the control circuits.
yTwist the button clockwise to restore power.
Upper Controls Emergency Stop Override
The upper controls emergency stop override (refer to
Figure 4.1) allows the platform to be lowered from the
lower controls in the event the upper controls emergency
stop button is depressed.
yHold the upper controls emergency stop override
switch upward to enable the lower controls.
Emergency Lowering Knob
The emergency lowering knob may be used to lower
the platform if there is a malfunction in the hydraulic or
electrical system. The knob is mounted on the left side
of the aerial platform (refer to Figure 4.3).
Figure 4.3 – Emergency Lowering Knob
yPull the emergency lowering knob outward to open the
cylinder bleed down valve for emergency lowering.
Emergency
Stop
Emergency
Lowering Knob

Chapter 4 – Safety Devices
12 SL30SL – 8210037
yAttach only one fall restraint device to each lanyard
anchor.
yDo not use the lanyard anchors for personal fall arrest
anchorage.
Tilt Alarm
If the aerial platform chassis is out of level more than four
degrees side-to-side or front-to-rear when the platform is
raised, an alarm will sound.
Danger
The aerial platform can tip over if it becomes unstable.
Death or serious injury will result from a tip-over ac-
cident. 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 hazard.
Completely lower the platform and drive to a level surface
or active the speed level when the tilt alarm sounds.
The tilt alarm is for added protection and does not
justify operating on anything other than rm, at, level
surfaces.
Speed Level
The speed level button may be used to level the platform
when the aerial platform chassis is out of level more than
four degrees side-to-side or front-to-rear. The speed
level cannot be set if the aerial platform chassis is out
of level more than 13 degrees side-to-side or 9 degrees
front-to-rear.
The speed level button is located on upper control panel
(refer to Figure 4.6).
Figure 4.6 – Upper Controls
yWhile the speed level is set only the platform raise
and lower functions will work.
yTo drive the machine, the speed level must be deac-
tivated by fully lowering the platform.
Speed
Level
Horn
Guardrails
The guardrails (refer to Figure 4.4) help protect personnel
from falling off the platform.
The guardrail system includes:
yA top rail
yA mid rail
yAn entry gate
yToeboards around the sides of the platform.
Figure 4.4 – Platform
The entry gate allows for access to the platform. The
gate must be securely latched except when personnel
are entering or leaving the platform.
Lanyard Anchors
Six lanyard anchors for fall restraint anchorage are pro-
vided on the oor of the platform (refer to Figure 4.5):
Figure 4.5 – Platform
Note
The lanyard anchors are not designed for lifting or tying
the machine down.
yIf local work rules require the use of a fall restraint
device, properly connect it to a lanyard anchor before
raising the platform.
Entry
Gate
Top Rail
Toeboard
Mid Rail
Lanyard
Anchor

Chapter 4 – Safety Devices
SL30SL – 8210037 13
Danger
The aerial platform can tip over if it becomes unstable.
Death or serious injury will 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 hazard.
The aerial platform must be on a rm, at surface capa-
ble of withstanding the load forces imposed by the aerial
platform in all operating conditions before the speed
level is used.
Engine Protection Systems
A constant alarm will sound to warn against high engine
temperature or low oil pressure.
The engine will shut-down
yif the operating temperature exceeds a preset level
yor if the oil pressure is too low for safe operation.
High Engine Temperature Alarm
If the coolant exceeds the engine operating temperature
an alarm will sound and the engine will shut off.
Do not restart the engine until the condition that caused
the overheating has been corrected.
Low Oil Pressure Alarm
The low oil pressure alarm sounds when the engine oil
pressure is near the lower limit for safe engine operation.
If the alarm sounds, lower the platform to the ground and
then turn the engine off.
yIf the engine oil pressure falls below a safe operating
value the engine will shut off.
yThe engine can be restarted with low oil pressure,
but it will only run for a few seconds before it shuts
off again.
yDo not restart the engine until the condition that
caused the low oil pressure has been corrected.
Horn Button
The horn button may be used to warn personnel on the
ground. The horn button is located on the upper control
panel (refer to Figure 4.6).
Lowering Alarm
When the aerial platform is lowered, the alarm emits a
loud beeping sound to warn personnel in the work area
to stand clear.
Danger
Pinch points exist on the machine. Death or serious
injury will result if the platform lowers onto personnel.
Stand clear while raising and lowering the platform.
Be careful when lowering the platform. Keep hands and
ngers away from the machine components.
All Motion Alarm
An optional all motion alarm may be provided on the
machine. The alarm sounds, in short beeps, anytime the
machine functions are being operated. The alarm is used
to warm personnel in the work area to stand clear.
Flashing Light
The optional ashing light mounted on the machine may
be used to warn personnel that the aerial platform is in
the area.
The lights ash at about one ash per second when the
engine is running.

Chapter 4 – Safety Devices
14 SL30SL – 8210037

SL30SL – 8210037 15
The aerial platform is equipped with several gauges to
monitor the condition of the machine before and during
operation.
Display Screen
An LED display screen is located on the upper control
panel (refer to Figure 5.1).
Figure 5.1 – Upper Controls
The display screen shows:
ygeneral operators information.
yfault codes used to locate and eliminate situations
where machine operation may be interrupted.
Note
Refer to Chapter 11 for a list of fault codes.
Hour Meter
The hour meter is part of the digital display on the upper
control panel (refer to Figure 5.1). It measures the ac-
cumulated aerial platform operating time.
To view the hour meter reading:
1. From the lower controls, twist the emergency stop
button clockwise to the on position, turn the on/off
switch to the on position, and press the start button
to start the engine.
2. From the upper controls, push the emergency stop
button inward.
3. Press and hold the horn and platform raise/lower but-
tons and twist the emergency stop button clockwise to
restore power. The display screen should now have
“hr” shown.
4. Press the right steer switch to scroll through the hour
meter reading, two digits at a time.
Emergency
Stop
Display
Screen
For example, if pressing the right steer switch slowly
three times displays “10” followed by “40” and then
“hr” after the third time, the accumulated aerial plat-
form operating time is 1,040 hours.
5. Push the emergency stop button inward.
Fuel Gauge
The fuel gauge is located on the front of the fuel tank
(refer to Figure 5.2) located behind the doors on the right
side of the chassis. It shows the actual level of the fuel
in the tank.
Figure 5.2 – Fuel Tank
Note
Do not run a diesel fuel tank empty. Air in the fuel line
makes the engine hard to start.
Engine Oil
The engine oil level is measured with a dipstick (refer
to Figure 5.3). The dipstick is the only way to accurately
determine the engine oil level. The engine oil level should
always be between the add and full marks on the dip-
stick.
Figure 5.3 – Engine Compartment
Fuel Gauge
Oil Dipstick
Chapter 5 – Gauges and Displays

Chapter 5 – Gauges and Displays
16 SL30SL – 8210037
Hydraulic Fluid Level Gauge
The hydraulic uid level gauge is on the front of the
hydraulic oil tank (refer to Figure 5.4) located behind the
doors on the left side of the chassis. The uid should be
between the minimum and maximum lines.
Figure 5.4 – Fuel Tank
Only read the uid level when the scissor structure is
completely lowered. Otherwise, the lift cylinders become
large reservoirs for hydraulic oil and the oil level in the
tank will be low. The oil level should be within ± 0.25″
(6.4 mm) of the maximum line.
Hydraulic Fluid
Gauge
Engine Air Filter Gauge
The air lter gauge (refer to Figure 5.5) is located in the
engine compartment behind the doors on the right side
of the chassis.
Figure 5.5 –Engine Compartment
The air lter gauge measures the air pressure between
the intake manifold and the air lter.
When the red indicator disk is visible through the clear
area of the gauge, it’s time to change the lter element.
After changing the lter, press the reset button to reset
the indicator disk.
Air Filter Gauge
Reset Button