Snorkel TB47J CE User Manual
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Part Number 0075239EE
July, 2005
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 defined 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, booms, 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, booms, 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.
Table of Contents
Chapter 1 – Introduction
Aerial Platform Features ............................................ 1
Options ..................................................................... 1
Operator’s Manual ..................................................... 1
Safety Alerts ............................................................. 1
Operation .................................................................. 1
Maintenance ............................................................. 2
Owner and User Responsibilities ............................... 2
Additional Information ................................................ 2
Chapter 2 – Specifications
Component Identification ........................................... 3
Working Envelope ..................................................... 4
General Specifications............................................... 5
Aerial Platform ........................................................ 5
Platform .................................................................. 5
Function Speed .......................................................5
Drive System .......................................................... 5
Tires ....................................................................... 5
Electrical System ................................................... 5
Hydraulic System ................................................... 5
Engine .................................................................... 5
Fuel Tank Capacity ................................................. 5
Ambient Air Temperature Operating Range .............. 5
Maximum Wind Speed ............................................5
Engine Specifications ................................................ 6
Engine Oil Viscosity.................................................. 7
Cummins B3.3 ........................................................ 7
Deutz F3L-2011F .................................................... 7
Chapter 3 – Safety
Electrocution Hazards ............................................... 9
Minimum Safe Approach Distance ............................. 9
Prestart Inspection ................................................... 10
Work Place Inspection and Practices ....................... 10
Operation .................................................................10
Tip-Over and Falling Hazards ....................................10
Electrical System ..................................................... 11
Hydraulic System ..................................................... 11
Engine and Fuel Handling Precautions ..................... 11
Placards and Decals ................................................ 12
Chapter 4 – Safety Devices
Emergency Stop Controls ........................................ 13
Emergency Power System .......................................13
Emergency Lowering Knob .......................................13
Ground Operation Switch .........................................14
Platform Foot Switch ................................................14
Guardrails ................................................................14
Lanyard Anchors ...................................................... 14
Tilt Alarm .................................................................. 14
Platform Overload Sensing System ..........................15
Engine Protection Systems ...................................... 15
High Engine Temperature Alarm ............................ 15
Low Oil Pressure Alarm ........................................ 15
Horn ......................................................................... 16
Drive Motion Alarm ................................................... 16
Flashing Light .......................................................... 16
Driving Lights............................................................ 16
Platform Work Lights ............................................... 16
Chapter 5 – Gauges and Displays
Hour Meter ............................................................... 17
Engine Temperature Gauge ...................................... 17
Ammeter ..................................................................17
Engine Air Filter Gauge ............................................ 17
Fuel ......................................................................... 17
Engine Oil ................................................................18
Hydraulic Fluid Filter Gauge .....................................18
Fluid Level and Temperature Gauge .......................... 18
Chapter 6 – Controls
Battery Disconnect Switch .......................................19
Lower Controls ......................................................... 19
Emergency Stop Button ........................................ 19
Control Selector Switch ........................................ 19
Start Switch .......................................................... 19
Ground Operation Switch ...................................... 20
Rotation Switch .....................................................20
Boom Elevation Switch ......................................... 20
Boom Extend/Retract Switch ................................ 20
Jib Articulation Switch ........................................... 20
Platform Level Switch ............................................ 20
Platform Rotation Switch .......................................20
Engine/Emergency Power Switch ......................... 20
Throttle Switch ...................................................... 20
Circuit Breaker Reset Buttons ............................... 20
Upper Controls ......................................................... 21
Start Switch .......................................................... 21
Emergency Stop Button ........................................ 21
Speed Knob .......................................................... 21
Drive/Boom Selector Switch .................................. 22
Boom Joystick ...................................................... 22
Drive Joystick ....................................................... 22
Drive Range Switch ............................................... 22
Jib Articulation Switch ........................................... 22
Boom Extend/Retract Switch ................................ 22
Platform Rotate Switch ......................................... 22
Platform Level Switch ............................................ 22
Engine/Emergency Power Switch ......................... 22
Throttle Switch ...................................................... 22
Horn Button .......................................................... 23
Platform Foot Switch ............................................. 23
Machine/Generator Switch ....................................... 23
Driving and Platform Work Lights.............................. 23
TB47J – 0075239EE
Table of Contents
Chapter 7 – Prestart Inspection
Operator’s Manual ....................................................25
Engine ..................................................................... 25
Oil Level ................................................................ 25
Coolant ................................................................. 25
Radiator ................................................................ 26
Fuel Tank .............................................................. 26
Fuel Line ............................................................... 26
Air Filter ................................................................26
Charging System .................................................. 26
Cold Weather Start Kit—Block Heater................... 26
Electrical System ..................................................... 26
Emergency Power Battery .................................... 27
Battery Fluid Level ................................................ 27
Battery Terminals .................................................. 27
Cables and Wiring Harness ......................................27
Hydraulic System ..................................................... 27
Fluid Level............................................................. 27
Fluid Filter............................................................. 28
Hoses, Tubes, and Fittings ................................... 28
Tires and Wheels ..................................................... 28
Lower Control Station ............................................... 28
Operating Controls ................................................ 29
Emergency Stop ................................................... 29
Emergency Power................................................. 29
Emergency Lowering ................................................29
Level Sensor ............................................................29
Flashing Light .......................................................... 30
Sandblast Protection Kit .......................................... 30
Structures ................................................................ 30
Weldments ........................................................... 30
Slide Pads ............................................................ 30
Wire Ropes ........................................................... 30
Fasteners ............................................................. 31
Upper Control Station ............................................... 31
Guardrail System .................................................. 31
Lanyard Anchors ................................................... 32
Operating Controls ................................................ 32
Emergency Stop ................................................... 32
Emergency Power................................................. 32
Horn ...................................................................... 32
Electrical Power Outlet ......................................... 32
Drive Motion Alarm ................................................ 32
Driving and Work Lights ........................................ 32
Platform Control Cover .......................................... 32
Tow Kit ..................................................................... 32
Placards and Decals ................................................ 33
Prestart Inspection Checklist ...................................37
Chapter 8 – Operation
Cold Weather Start-Up ............................................. 39
Engine Cold Weather Start Kit.................................. 39
Cummins — Block Heater .................................... 39
Deutz — Manifold Preheater ................................. 39
Hydraulic System Cold Weather Warm-Up............... 39
Preparing for Operation............................................. 40
Lower Controls ......................................................... 40
Upper Controls ......................................................... 40
Boom Operation .................................................... 41
Platform Overload Sensing System ....................... 41
Driving and Steering .............................................. 42
Drive Speeds ......................................................... 42
Motion Warning Alarm ........................................... 43
Four Wheel Drive ......................................................43
AC Generator ........................................................... 43
Air Line .................................................................... 43
Driving Lights............................................................ 43
Platform Work Lights ............................................... 43
Chapter 9 – Stowing and Transporting
Stowing ....................................................................45
Tucked Stow ......................................................... 45
Transporting ............................................................. 45
Driving ................................................................... 46
Winching .............................................................. 46
Hoisting ................................................................ 47
Securing for Transport ........................................... 48
Chapter 10 – Emergency Operation
Emergency Power System .......................................49
Lower Controls ...................................................... 49
Upper Controls ...................................................... 49
Emergency Lowering ................................................50
Towing ......................................................................50
Chapter 11 – Troubleshooting
Troubleshooting Chart ..............................................53
Appendix A – Glossary
Limited Warranty
TB47J – 0075239EE
Chapter 1 – Introduction
Aerial Platform Features
The aerial platform is a boom-supported elevating work
platform used to raise personnel, their tools, and material to the workstation. The booms are raised and lowered with hydraulic cylinders. Hydraulic motors on the
drive wheels provide power to move the aerial platform.
The standard machine includes the following features.
• Proportional boom lift, swing, and drive control
• 170 degree hydraulic platform rotation
• Two safety lanyard attachments
• Manual lowering valve at chassis
• Hydraulic oil level and temperature gauges
• Lifting lugs
• Tie-down lugs
• Horn
• 3.5 degree tilt alarm
• Electronic ignition
• Hour meter
• Ammeter
• Coolant temperature gauge
• High engine temperature shut down
• Low oil pressure shut down
• Foam filled tires
• Battery operated emergency power system
• 360 degree continuous turntable rotation
• 76 cm x 152 cm (30″ x 60″) steel platform
• Platform gravity gate
• Platform overload sensing system
• Five year limited warranty
The machine may be powered with one of the following
engines.
• Cummins B3.3 – Diesel
• Deutz F3L-2011F – Diesel
• 76 cm x 234 cm (30″ x 92″) aluminum 226 kg (500 lb)
capacity platform
• 76 cm x 152 cm (30″ x 60″) aluminum 272 kg (600 lb)
capacity platform
Operator’s Manual
This manual provides information for safe and proper operation of the aerial platform. 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.
ADanger
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.
The aerial platform has been manufactured to conform to
European Directive 98/37/EC and European Standard
EN280.
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Options
The following options may be provided on the machine.
• Platform control cover
• Platform work lights – flood lights
• Flashing light – amber
• Platform swinging gate
• Sandblast protection kit
• Driving lights – two headlights and two rear lights
• Spark arrestor muffler – Deutz engines
• Cold weather start kit Cummins – block heater
• Cold weather start kit Deutz – manifold preheater
• AC generator – hydraulic powered, 220 VAC
• Drive motion alarm
• Road tread tires
• Flotation tires
• Airline to platform
• Tow kit
TB47J – 0075239EE 1
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 specifications and industry standards. However, any personnel
lifting aerial platform can be potentially dangerous in the
hands of untrained or careless operators.
AWarning
ACaution
Chapter 1 – Introduction
AWarning
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 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 qualified person. Become proficient in knowledge and actual
operation before using the aerial platform on the job. You
must be trained and authorized to perform any functions
of the aerial platform. Operation of the aerial platform must
be within the scope of the machine specifications.
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 qualified to do so. Following
the daily prestart inspection in this Operator’s Manual
will help keep the aerial platform in optimum working con-
dition. Other maintenance functions must be performed
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. Modification may void the warranty, adversely affect stability,
or affect the operational characteristics of the aerial platform.
Owner and User Responsibilities
All owners and users of the aerial platform must read,
understand, and comply with all applicable regulations.
Ultimate compliance to national safety regulations is the
responsibility of the user and their employer.
Additional Information
For additional information contact your local dealer or
Snorkel at:
Snorkel International
P.O. Box 1160
St. Joseph, MO 64502-1160 USA
785-989-3000
http://www.snorkelusa.com
2 TB47J – 0075239EE
Component Identification
Chapter 2 – Specifications
Upper Controls
Emergency
Lowering
Valve
Engine
Hydraulic Fluid Tank
And Filter
LP Fuel Tank
Right Side
Battery Disconnect Switch
Main Boom
Fuel Tank
Chassis
Intermediate
Boom
Wiring Box
Steer Wheels
Operator’s
Manual
Lower Controls
Platform
Batteries
Tip Boom
Jib
Steer Wheels
Platform
Foot Switch
Left Side
TB47J – 0075239EE 3
Chapter 2 – Specifications
Working Envelope
Meters
(Feet)
15.2
(50)
12.2
(40)
9.1
(30)
6.1
(20)
3.0
(10)
0
75°
70°
70°
18°
12.2
(40)
4 TB47J – 0075239EE
9.1
(30)
6.1
(20)
3.0
(10) 0
3.0
(10)
General Specifications
Chapter 2 – Specifications
Aerial Platform
Working height 16 m (52′ 6″)
Maximum platform height 14.2 m (46′ 6″)
Horizontal reach 11.9 m (39′)
Main boom
Articulation -18° to +75°
Extension 2.5 m (8′ 4.75″)
Turntable rotation 360° continuous
Turning radius, inside
Two wheel drive 1.6 m (5′ 2″)
Four wheel drive 1.7 m (5′ 6″)
Wheelbase 2.4 m (8′)
Ground clearance 25 cm (10″)
Maximum wheel load 2,495 kg (5,500 lbs)
Maximum ground pressure 3.8 kg/cm² (54 psi)
Weight, GVW
Approximate 6,123 kg (13,500 lbs)
Stowed width 2.4 m (7′ 11.5″)
With flotation tires 2.6 m (8′ 7.5″)
Stowed length 8.1 m (26′ 9″)
Stowed length, tucked stow 6.5 m (21′ 3.5″)
Stowed height 2.3 m (7′ 9″)
Stowed height, tucked stow 2.4 m (7′ 11.5″)
Platform
Dimensions
Standard steel 76 cm x 152 cm (30″ x 60″)
Rated work load 227 kg (500 lb)
Optional aluminum 76 cm x 234 cm (30″ x 92″)
Rated work load 227 kg (500 lb)
Optional aluminum 76 cm x 152 cm (30″ x 60″)
Rated work load 227 kg (600 lb)
Rotation 90° CW to 80° CCW
Maximum number of occupants 2 people
Optional AC generator 220 VAC
Function Speed
Turntable rotation, 360 degrees 108 to 113 seconds
Main boom
Up 65 to 70 seconds
Down 65 to 70 seconds
Extend 40 to 45 seconds
Retract 25 to 30 seconds
Jib
Up 25 to 35 seconds
Down 25 to 35 seconds
Platform rotation, 170 degrees 8 to 15 seconds
Drive
High, booms stowed 4.8 km/h (3.0 mph)
Low, booms elevated 1.6 km/h (1.0 mph)
Drive System
Standard Four wheel drive
Optional Two wheel drive
Gradeability 25%
Tires
Street tread, 10 ply 30 cm x 42 cm (12″ x 16.5″)
Bar lug, 10 ply 30 cm x 42 cm (12″ x 16.5″)
Flotation, 10 ply 33/16LL-16.1
Foam filled, 10 ply Street tread or bar lug
Electrical System
Voltage 12 V DC negative chassis ground
Source Two - 12 V 600 CCA batteries
Fluid recommended distilled water
Hydraulic System
Maximum pressure 20,684 kPa (3,000 psi)
Reservoir capacity 62.4 l (16.5 US gal)
System capacity 94.6 l (25 US gal)
Maximum operating temperature 93°C (200°F)
Hydraulic fluid recommended
Above -13°C (10°F) Mobil DTE-13M
(ISO VG32)
Below -13°C (10°F) Mobil DTE-11M
(ISO VG15)
Engine
Diesel Cummins B3.3
Diesel Deutz F3L-2011F
Fuel Tank Capacity
Diesel 75.7 l (20 US gal)
Ambient Air Temperature Operating Range
Celsius -18°C to 43°C
Fahrenheit 0°F to 110°F
Maximum Wind Speed
Gust or steady 45 km/h (28 mph)
TB47J – 0075239EE 5
Chapter 2 – Specifications
Engine Specifications
Engine
Cummins
B3.3
Diesel
CID Fuel Grade Coolant
ASTM No. 2D fuel with a
3.26 liter
(199 cu. in.)
minimum Cetane number of
1
40.
For operating tempera-
tures below 0°C (32°F) use
winterized No. 2D.
• DIN 51 601 (February 1986).
50% water
50% Antifreeze
1
Operating
Temperature
60°C to 100°C
2
140°F to 212°F
Oil
Capacity
7.5 liter (2 gal)
total
1.5 liter (1.6 qt)
Low to High
Grade
15W-40
CH4/SG
• BS 2869: A1 and A2 (with A2
Deutz
F3L-2011F
Diesel
2.0 liter
(125 cu. in.)
refer to Deutz manual about
sulfur content)
• ASTM D 975-88: 1-D and 2-D
• CEN EN 590 or DIN EN 590
• NATO Code F-54 and F-75
1
Air
78°C to 95°C
172°F to 203°F
6.0 liter
(1.59 US gal)
API: CD
or higher
• For operating temperatures
below 0°C (32°F) use winter
grade diesel.
Note 1: Refer to the engine manufacturers manual for specific fuel recommendations and specifications.
Note 2: Ethylene glycol or Propylene glycol may be used. Refer to the Cummins® Operation and Maintenance Manual B3.3 Series
Note 3: Refer to the engine manufacturers manual for specific lubricating oil recommendations and specifications.
Engines for specific coolant recommendations and specifications.
Oil
SAE
API:
3
3
6 TB47J – 0075239EE
Engine Oil Viscosity
Cummins B3.3
Deutz F3L-2011F
Chapter 2 – Specifications
TB47J – 0075239EE 7
Chapter 2 – Specifications
8 TB47J – 0075239EE
Chapter 3 – Safety
Knowledge of the information in this manual, and proper
training, provide a basis for safely operating the aerial
platform. Know the location of all controls and how they
operate to act quickly and responsibly in an emergency.
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 condition
relating to capacity, intended use, or safe operation is
suspected, 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.
ADanger
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 defined by ANSI.
ANSI publications define 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 A92.5
Voltage Range
(Phase to Phase)
0 to 300V
Over 300V to 50kV
Over 50kV to 200kV
Over 200kV to 350kV
Over 350kV to 500kV
Over 500kV to 750kV
Over 750kV to 1000kV
Minimum Safe Approach Distance
Feet Meters
Avoid Contact
10
15
20
25
35
45
3.05
4.60
6.10
7.62
10.67
13.72
Table 1 – Minimum Safe Approach Distance
Figure 3 – Minimum Safe Approach Distance
TB47J – 0075239EE 9
Chapter 3 – Safety
Prestart Inspection
Perform a prestart inspection before each shift as described 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. The welding ground clamp must be attached to the same structure that is being welded. Electrical current flow 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.
• 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 applied by the aerial platform in all operating
configurations
Always look in the direction of movement. Drive with care
and at speeds compatible with the work place conditions.
Use caution when driving over rough ground, on slopes,
and when turning. Do not engage in any form of horseplay or permit riders any place other than in the platform.
Secure all accessories, containers, tools, and other materials 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 another platform.
Do not operate the aerial platform if it is damaged or not
functioning properly. Qualified 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 floor grating or otherwise obstruct your view below. Make sure the area below the
platform is free of personnel before lowering.
Before using the aerial platform in any hazardous (classified) 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 traffic-flow patterns and
obey the flagmen, road signs, and signals.
While operating the aerial platform, a good safety practice is to have qualified personnel in the immediate work
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.
• Watch for bystanders and never allow anyone to be
under, or to reach through the booms while operating
the aerial platform.
ADanger
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
sufficient clearance around the machine before
moving the chassis, booms, or platform. Allow sufficient room and time to stop movement to avoid contact with structures or other hazards.
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.
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.
Tip-Over and Falling Hazards
Operate the aerial platform only on a firm, flat, level surface 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
and ground pressure. Raise the booms only when the
aerial platform is on level ground.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover 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. Do not raise the boom in winds above 45 km/h
(28 mph).
All platform occupants must wear a fall restraint device
connected to a lanyard anchor point.
10 TB47J – 0075239EE
Chapter 3 – Safety
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. Where possible, place the platform over a roof or
walking structure to do the transfer.
2. Transfer your anchorage from one structure to the
other before stepping across.
3. Remember that you might be transferring to a structure where personal fall arrest is required.
4. Use the platform entrance, do not climb over or
through the guardrails.
Do not operate the aerial platform in windy or gusty conditions. Do not 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 gate closed. Make sure
that all protective guards, cowlings, and doors are securely fastened.
Do not exceed the platform capacity as indicated on the
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 operate any of the aerial platform functions while
the battery charger is plugged in.
AWarning
Batteries give off hydrogen and oxygen that can
combine explosively. Death or serious injury could
result from a chemical explosion. Do not smoke or
permit open flames or sparks when checking the
batteries.
Battery acid can damage the skin and eyes. Serious infection or reaction can result if medical treatment is not given immediately. Wear face and eye
protection 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 contacts your
skin, wash off immediately with clear water.
Hydraulic System
The hydraulic system contains hoses with hydraulic fluid
under pressure.
ADanger
Hydraulic fluid escaping under pressure can have
enough force to inject fluid into the flesh. Serious
infection or reaction will result if medical treatment
is not given immediately. In case of injury by escaping hydraulic fluid, seek medical attention at once.
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.
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, and hoses,
etc., from becoming caught in or on the aerial platform. If
the platform or booms becomes caught on an adjacent
structure or other obstacle and is prevented from normal
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.
TB47J – 0075239EE 11
Engine and Fuel Handling Precautions
Refer to the engine manufacturer’s Operator’s Manual for
complete information on safe engine operation, maintenance, and specifications.
ADanger
Engine exhaust contains carbon monoxide, a poisonous 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 flames while fueling or near
fueling operations.
Chapter 3 – Safety
Never remove the fuel cap or fill the fuel tank while the
engine is running or hot. Never allow fuel to spill on hot
machine components.
Maintain control of the fuel filler nozzle when filling the
tank. Spilled fuel is a potential fire hazard.
Do not overfill 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.
ACaution
Engine coolant escaping under pressure can 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 prevention. Do not operate the aerial platform if any placards or decals are missing or not legible.
12 TB47J – 0075239EE
Chapter 4 – Safety Devices
This aerial work platform is manufactured with safety devices, placards, and decals to reduce the likelihood of an
accident. For the safety of all personnel, do not disable,
modify, or ignore any safety device. Safety devices are
included in the daily prestart inspection.
AWarning
The potential for an accident increases when safety
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 personnel
can make repairs.
Emergency Stop Controls
There is an emergency stop control at the lower and upper controls.
At the lower controls, the emergency stop is a two-position push button (refer to Figure 4.1). Push the emergency stop button in to disconnect power to all control
circuits. Pull the button out to restore power.
Emergency
Stop Button
Engine/Emergency
Power Switch
At the upper controls, the emergency stop is a two-position push button (refer to Figure 4.2).
Emergency
Stop Button
Figure 4.2 – Upper Controls
Push the emergency stop button in to disconnect power
to the upper control circuits. Pull the button out to restore power.
Engine/Emergency
Power Switch
Emergency Power System
The emergency power system includes a back-up pump,
motor, and battery. Use this system to operate the boom
and turntable functions to lower the platform if the main
power system fails due to engine or pump failure. Hold
the engine/emergency power switch (refer to Figure 4.1
and 4.2) down to activate the emergency power system.
The length of time the pump can be operated depends on
the capacity of the battery.
Emergency Lowering Knob
The emergency lowering knob may be used to lower the
booms if the engine will not start and the emergency
power system will not work. The knob is on the base end
of the main boom lift cylinder (refer to Figure 4.3) under
the left side of the turntable.
Ground Operation
Switch
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.
TB47J – 0075239EE 13
Figure 4.3 – Emergency Lowering Knob
Emergency
Lowering Knob
Chapter 4 – Safety Devices
Ground Operation Switch
The ground operation switch (refer to Figure 4.1) prevents
boom and platform movement if a control switch on the
lower control panel is accidentally moved.
Hold the switch up to operate the machine from the lower
controls.
Platform Foot Switch
Stepping down on the platform foot switch (refer to Figure
4.4) activates the upper controls.
Top Rail
Gravity
Lanyard
Anchors
Platform Foot
Switch
Gate
Mid Rail
Toeboard
The gates close automatically after entering or exiting
the platform. The gate is part of the guardrail system and
must be securely fastened after entering the platform.
Lanyard Anchors
Two lanyard anchors for fall restraint anchorage are provided below the upper controls at the front of the platform
(refer to Figure 4.4).
Note
The lanyard anchors are not for lifting or tying the machine down.
All personnel in the platform must connect their fall restraint device to a lanyard anchor before raising the platform. Do not use the aerial platform for personal fall ar-
rest anchorage.
Tilt Alarm
If the aerial platform chassis is out of level more than 3.5
degrees when the main boom is raised or extended, an
alarm will sound. The tilt alarm is located under the upper
control box (refer to Figure 4.6).
Figure 4.4 – Platform
The foot switch must be engaged and a control must be
moved to operate the boom, drive, and/or platform from
the upper controls.
Guardrails
The guardrail system includes a top rail, mid rail, and
toeboards around the sides of the platform (refer to Figure 4.4).
A gravity gate (refer to Figure 4.4) or an optional swinging
gate (refer to Figure 4.5) allows for access to the platform.
Swinging
Gate
Tilt Alarm
Figure 4.6 – Tilt Alarm
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover 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.
Retract and lower the main boom and then drive to a level
surface when the tilt alarm sounds.
The tilt alarm is for added protection and does not justify
operating on anything other than firm, flat, level surfaces.
Figure 4.5 – Platform
14 TB47J – 0075239EE
Chapter 4 – Safety Devices
Platform Overload Sensing System
Boom and drive functions are stopped when the platform
load reaches or exceeds rated capacity. The horn will
sound intermittently and the red light (refer to Figure 4.7)
will illuminate when the platform rated work load is exceeded.
Platform
Overload Light
Figure 4.7 – Upper Controls
The horn will sound and the light will flash until the excess load is removed from the platform. At that time, the
boom and drive functions are again operational.
If the overload exceeds rated platform capacity by more
than 20 percent, the system will error out, stopping all
boom and drive functions. The horn will then sound continuously and the red light will stay illuminated at the
upper and lower controls (refer to Figure 4.8).
The horn will sound and the light will stay on until the
excess load is removed from the platform and the start
switch is turned off and back on, resetting the system. At
that time, the boom and drive functions are operational.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover accident. Do not exceed the capacity values
indicated on the platform rating placard.
The overload sensing system is not active when the machine is being driven with the main boom below horizontal and fully retracted. This allows the machine to be driven
without the system sensing an overload due to rough
ground conditions.
To eliminate repeated tripping of the system during machine operation, there is a five second delay in machine
functions following:
• starting the engine.
• placing the drive/boom selector switch in the boom
position when the main boom is below horizontal and
fully retracted.
• removing excess load from the platform.
Engine Protection Systems
A constant tone alarm will sound to warn against high
engine temperature or low oil pressure.
Engine
Temperature
Gauge
Platform
Overload Light
Figure 4.8 – Lower Control Panel
The engine will shut-down if the operating temperature
exceeds a preset level or if the oil pressure is too low for
safe operation. An engine temperature gauge is on the
lower control panel (refer to Figure 4.8).
High Engine Temperature Alarm
If the coolant in a Cummins engine exceeds the engine
operating temperature an alarm will sound and the engine will shut off.
If the oil in a Deutz engine exceeds 110°C (230°F) an
alarm will sound and the engine will shut off. Any time
there is no alternator current being produced, an alarm
will sound and the engine will shut off. This prevents high
engine temperature if the fan belt breaks.
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. Do not restart the engine until
the condition that caused the low oil pressure has been
corrected.
TB47J – 0075239EE 15
Chapter 4 – Safety Devices
If the engine oil pressure falls below a safe operating value
the engine will shut off. The engine can be restarted with
low oil pressure, but it will only run a few seconds before
it shuts off again.
Horn
The horn may be used to warn personnel on the ground.
The horn button is on the right side of the upper control
box. The horn is operational when the machine is set up
for operation from the upper controls.
Drive Motion Alarm
An optional drive motion alarm may be provided on the
machine. When the drive/steer control is moved out of
neutral the alarm sounds, in short beeps, to warn personnel in the work area to stand clear.
Flashing Light
An optional amber flashing light may be located on the
top of the boom near the base end (refer to Figure 4.9).
The flashing light warns personnel that the aerial platform
is in the area.
Flashing Light
The light flashes at about one flash per second when the
engine is running.
Driving Lights
Optional headlights and blinking tail lights may be installed on the machine. The headlights are located on
the top of the front cowling. The tail lights are mounted on
the sides of the rear cowling.
Driving lights help improve visibility while driving the aerial
platform and help others see it too. Driving lights are not
for driving on public roadways.
Platform Work Lights
Optional platform work lights may be located on the top
rail of the platform, one on each side of the upper control
panel.
Use the platform lights to improve visibility while working
aloft in dimly lit areas. Do not use the platform work lights
to drive on public roadways.
Figure 4.9 – Flashing Light
Figure 4.10 – Platform Work Lights
16 TB47J – 0075239EE
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