Snorkel S2770RT Operator's Manual

OPERATOR’S
MANUAL
Model S2770RT IS – Intrinsically Safe
Part Number 0102094
November 2017
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, scissor structure, 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
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.
Table of Contents
Electrical Danger............................. Inside Front Cover
California Proposition 65................. Inside Front Cover
Chapter 1 – Introduction
Aerial Platform Features..............................................1
Operator’s Manual.......................................................1
Safety Alerts................................................................1
Operation.....................................................................1
Maintenance................................................................2
Manual of Responsibilities...........................................2
Additional Information..................................................2
Chapter 2 – Specifications
Component Identification.............................................3
General Specifications................................................4
Aerial Platform..........................................................4
Platform....................................................................4
Function Speed........................................................4
Drive System............................................................4
Tires.........................................................................4
Hydraulic System.....................................................4
Ambient Air Temperature Operating Range.............4
Maximum Wind Speed.............................................4
Chapter 3 – Safety
Electrocution Hazards.................................................5
Minimum Safe Approach Distance..............................5
Prestart Inspection......................................................6
Work Place Inspection and Practices..........................6
Operation.....................................................................6
Tip-Over and Falling Hazards......................................7
Hydraulic System........................................................7
Engine and Fuel Handling Precautions.......................7
Placards and Decals...................................................8
Chapter 4 – Safety Devices
Emergency Stop Controls...........................................9
Manual Emergency Lowering Pump...........................9
Ground Operation Button............................................9
Outriggers..................................................................10
Bubble Levels............................................................10
Platform Foot Valve...................................................10
Tilt Alarm....................................................................10
Guardrails..................................................................10
Lanyard Anchors.......................................................10
Horn Button............................................................... 11
Safety Prop................................................................ 11
Chapter 5 – Gauges and Displays
Fuel...........................................................................13
Engine Oil..................................................................13
Hydraulic Fluid Filter Gauge......................................13
Hydraulic Fluid Level Gauge.....................................13
Bubble Levels............................................................13
Chapter 6 – Controls
Outrigger Controls.....................................................15
Lower Controls..........................................................15
Emergency Stop Button.........................................15
Control Selector.....................................................15
Ground Operation Button.......................................15
Platform Raise Button............................................15
Platform Lower Button............................................15
Upper Controls..........................................................16
Emergency Stop Button.........................................16
Lift/Drive Handle.....................................................16
Steer Handle..........................................................16
Drive Speed Handle...............................................16
High Speed Drive – Rabbit.....................................16
Low Speed Drive – Turtle.......................................16
Joystick..................................................................16
Horn Button............................................................17
Platform Foot Valve...................................................17
Chapter 7 – Prestart Inspection
Operator’s Manual.....................................................19
Engine.......................................................................19
Oil Level.................................................................19
Air Intake................................................................19
Fuel Tank................................................................19
Fuel Line................................................................20
Hydraulic System......................................................20
Fluid Level..............................................................20
Fluid Filter..............................................................20
Hoses, Tubes, and Fittings.....................................20
Tires and Wheels.......................................................21
Outrigger Controls.....................................................21
Bubble Levels............................................................21
Lower Control Station................................................21
Operating Controls.................................................21
Emergency Stop.....................................................22
Manual Emergency Lowering Pump.........................22
Structures..................................................................22
Weldments.............................................................22
Rollers and Slide Blocks........................................22
Fasteners...............................................................23
Upper Control Station................................................23
Guardrail System...................................................23
Lanyard Anchors.......................................................23
Platform Extension Deck...........................................24
Operating Controls.................................................24
Emergency Stop.....................................................25
Horn Button............................................................25
Placards and Decals.................................................25
Prestart Inspection Checklist.....................................29
Chapter 8 – Operation
Hydraulic System Cold Weather Warm-Up ..............31
Manually Warming The Hydraulic System.............31
Preparing for Operation.............................................31
Outriggers..................................................................31
Operating with Outriggers Lowered on Slopes......32
Lower Controls..........................................................33
S2770RT IS – 0102094
Table of Contents
Upper Controls..........................................................33
Platform.....................................................................34
Raising and Lowering.............................................34
Driving and Steering..................................................34
Drive Speeds .........................................................35
Fold Down Guardrails................................................35
Platform Extension Deck...........................................36
Chapter 9 – Stowing and Transporting
Stowing......................................................................37
Transporting..............................................................37
Driving....................................................................37
Lifting With a Forklift...............................................37
Winching................................................................38
Hoisting..................................................................38
Securing for Transport............................................39
Chapter 10 – Emergency Operation
Manual Emergency Lowering Pump.........................41
Chapter 11 – Troubleshooting
Troubleshooting Chart...............................................43
Appendix A – Glossary
Limited Warranty
S2770RT IS – 0102094
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:
Proportional controls
Multi-position extension deck
Lanyard anchors
Swinging entry gate
Four wheel drive
Easy access side trays for engine and hydraulics
Lockable hinged covers
Independently operated hydraulic outriggers
Horn
Drivable at full height
Tie-down/lifting lugs
Forklift pockets
• Manual emergency lowering pump
yy Five year limited warranty
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The aerial platform has been manufactured, when applicable, to conform to all applicable requirements of the
following organizations:
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Occupational Safety and Health Administration
(OSHA)
American National Standards Institute (ANSI)
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.
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 specifications 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 qualified person.
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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.
Become proficient in knowledge and actual operation
before using the aerial platform on the job.
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The operator must be trained and authorized to perform any functions of the aerial platform.
Safety Alerts
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Operation of the aerial platform must be within the
scope of the machine specifications.
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.
S2770RT IS – 0102094
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.
1
Chapter 1 – Introduction
Maintenance
Manual of Responsibilities
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.
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.
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 performed
by maintenance personnel who are qualified to work on
the aerial platform.
All owners and users of the aerial platform must read,
understand, and comply with all applicable regulations.
Ultimate compliance to OSHA regulations is the responsibility of the user and their employer.
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
2
S2770RT IS – 0102094
Chapter 2 – Specifications
Component Identification
Top Rail
Extension
Deck
Platform
Mid Rail
Toeboards
Lower
Controls
Scissors
Structure
Serial Number Placard
Serial Number
Model Number
Fuel Tank
Tie-Down/Lifting
Lugs
Hydraulic Compartment
Rear
Hydraulic Reservoir • Hydraulic Fluid Filter
Emergency Lowering Pump
Front
Steer
Wheels
Tie-Down/Lifting
Lugs
Right Side
Upper
Controls
Operator’s
Manual
Entry
Gate
Engine Compartment
Engine • Hydraulic Pump
Entry
Steps
Chassis
Outriggers
Forklift Pockets
Both Sides
Rear
Front
Left Side
S2770RT IS – 0102094
3
Chapter 2 – Specifications
General Specifications
Aerial Platform
Working height
33′ 9″ (10.28 m)
Maximum platform height
27′ 2″ (8.28 m)
Maximum outreach – deck extended
4′ (1.2 m)
Turning radius
Inside
9′ 3″ (2.83 m)
Outside
15′ 1″ (4.6 m)
Ground clearance
14.6″ (37 cm)
Maximum wheel load
3,820 lbs (1,733 kg)
Empty vehicle weight (EVW)
Approximate
7,600 lbs (3,455 kg)
Stowed width
5′ 9″ (1.77 m)
Stowed length
11′ (3.36 m)
Stowed height
Rails up
8′ 2″ (2.5 m)
Rails down
5′ 8″ (1.7 m)
Platform
Dimensions
Deck retracted
Deck extended
Guardrail height
Toeboard height
8′ 11″ x 5′ 5″ (2.73 m x 1.65 m)
12′ 8″ x 5′ 5″ (3.86 m x 1.65 m)
45″ (1.14 m)
6″ (152 mm)
Rated work load
Deck retracted
Deck extended
Main deck
Extension
Maximum number of occupants
4
1,275 lbs (580 kg)
1,015 lbs (460 kg)
265 lbs (120 kg)
4 people
Function Speed
Platform raise
Platform lower
Drive speed maximum
Elevated
Stowed
Drive System
Standard
Gradeability – theoretical
Maximum drive height
Tires
Air filled
26 seconds
35 seconds
0.64 mph (1 km/h)
2.8 mph (4.5 km/h)
Four wheel drive
30%
27′ 2″ (8.28 m)
26 x 12.00 - 16.5 NHs
Hydraulic System
Maximum pressure
3,300 psi (22,750 kPa)
Reservoir capacity
13 US gal (50 l)
Maximum operating temperature
180°F (82°C)
Hydraulic fluid recommended
Above 10°F (-13°C)
ISO VG32
Below 10°F (-13°C)
ISO VG15
Fuel Tank Capacity
Diesel
11 US gal (41.5 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)
S2770RT IS – 0102094
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.
Minimum Safe Approach Distance
Minimum safe approach distances to energized power
lines and their associated parts must be observed while
operating the aerial platform.
Safety devices reduce the likelihood of an accident.
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Never disable, modify, or ignore any safety device.
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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
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 A92.6.
Voltage Range
(Phase to Phase)
0 to 300V
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
Feet
Meters
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
Table 1 – Minimum Safe Approach Distance
Figure 3 – Minimum Safe Approach Distance
S2770RT IS – 0102094
5
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
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.
Do not use the aerial platform as a ground connection
when welding.
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Drive with care and at speeds compatible with the
work place conditions.
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The welding ground clamp must be attached to the
same structure that is being welded.
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Use caution when driving over rough ground, on
slopes and when turning.
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Electrical current flow can be very intense, causing
serious internal damage to some components.
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Do not engage in any form of horseplay or permit riders any place other than in the platform.
Inspect the area before and during aerial platform use.
The following are some potential hazards that may be in
the work place:
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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
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.
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.
AWarning
The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. 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. Qualified maintenance personnel
must correct the problem before putting the aerial platform
back into service.
Operation
Know and understand the job site traffic-flow patterns and
obey the flagmen, road signs and signals.
Use three points of support when entering or exiting the
platform. For example, use two hands and one foot when
climbing into the platform.
While operating the aerial platform, a good safety practice is to have qualified personnel in the immediate work
area to:
Make sure the area below the platform is free of personnel
before lowering.
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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 elevating assembly
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
6
Make sure the area below the platform is free of personnel before lowering.
Keep both feet positioned firmly on the platform floor.
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Operate the controls slowly and deliberately to avoid
jerky and erratic operation.
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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.
S2770RT IS – 0102094
Chapter 3 – Safety
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 platform only when
the aerial platform is on level ground.
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.
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If 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.
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If control reversal does not free the platform, evacuate
the platform before attempting to free it.
ADanger
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.
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 fitness 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 anchorage from one structure to the other before stepping
across.
2. Remember that you might be transferring to a structure where personal fall arrest is required.
3. Use the platform entrance, do not climb over or
through the guardrails.
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.
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
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.
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.
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.
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.
Do not exceed the platform capacity nor the platformextension 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 use the aerial platform as a crane, hoist, jack or
for any purpose other than to position personnel, tools,
and materials.
S2770RT IS – 0102094
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.
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.
7
Chapter 3 – Safety
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.
Use the correct fuel grade for the operating season.
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, damaged, or illegible.
8
S2770RT IS – 0102094
Chapter 4 – Safety Devices
This aerial work platform is manufactured with safety
devices, placards, and decals to reduce the likelihood
of an accident.
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For the safety of all personnel, do not disable, modify,
or ignore any safety device.
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Safety devices are included in the daily prestart
inspection.
At the upper controls, the emergency stop is a two-position red push button (refer to Figure 4.2).
Emergency
Stop Button
AWarning
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 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 red push button (refer to Figure 4.1).
Ground Operation Button
Figure 4.2 – Upper Controls
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Push the emergency stop button inward to disconnect
power to all the control circuits.
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Pull the button outward to restore power.
Manual Emergency Lowering Pump
The manual emergency lowering pump may be used to
lower the platform and to release the brakes if the engine
will not start. The pump (refer to Figure 4.3) is behind the
cowling door on the right side of the chassis.
Scissor
Lower Knob
Brake
Release Knob
Emergency Stop Button
Pump
Main Control
Valve Assembly
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.
Figure 4.3 – Manual Emergency Lowering Pump
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Push the emergency stop button inward to disconnect
power to all control circuits.
After selecting either the scissor lower or brake release
valve, the hand pump may be used for emergency operation.
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Pull the button outward to restore power.
Ground Operation Button
The ground operation button (refer to Figure 4.1) prevents
platform movement if a control button on the lower control
panel is accidentally pressed.
Press and hold the button to operate the machine from
the lower controls.
S2770RT IS – 0102094
9
Chapter 4 – Safety Devices
Outriggers
Four outriggers, one on each corner of the machine are
used to level the chassis before raising the platform. The
machine should not be driven unless the outriggers are
completely raised.
Bubble Levels
Bubble levels (refer to Figure 4.4) are located on the
right front and left rear of the chassis. When the bubbles
are centered, the chassis is level and the platform can
safely be raised.
Guardrails
The guardrails (refer to Figure 4.6) help protect personnel
from falling off the platform.
The guardrail system includes:
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A top rail
A mid rail
An entry gate
Toeboards around the sides of the platform.
Top Rail
Swinging
Gate
Mid Rail
Toeboard
Figure 4.4 – Bubble Level
Platform Foot Valve
The platform foot valve is on the platform floor beneath
the upper controls. Stepping down on the platform foot
valve (refer to Figure 4.5) activates the upper controls.
Figure 4.6 – Platform
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
Four lanyard anchors for fall restraint anchorage are
provided on the floor of the platform (refer to Figure 4.7).
Platform Foot
Valve
Lanyard Anchor
Figure 4.5 – Platform Foot Valve
The foot valve must be engaged and a control must be
moved to operate the scissor and drive functions from
the upper controls.
Figure 4.7 – Platform Floor
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If local work rules require the use of a fall restraint
device, properly connect it to a lanyard anchor before
raising the platform.
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Attach only one fall restraint device to each lanyard
anchor.
Tilt Alarm
The tilt alarm sounds when the platform is elevated out
of the rest and the machine is not level.
Note
While the alarm is sounding, the drive and platform functions will not operate.
10
S2770RT IS – 0102094
Chapter 4 – Safety Devices
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Do not use the lanyard anchors for personal fall arrest
anchorage.
Note
The lanyard anchors are not designed for lifting or tying
the machine down.
Horn Button
The horn button may be used to warn personnel on the
ground. The horn button is located on the left side of the
upper control panel.
Safety Prop
The safety prop (refer to Figure 4.8) 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 inspection
and maintenance.
Figure 4.8 – Safety Prop
S2770RT IS – 0102094
11
Chapter 4 – Safety Devices
12
S2770RT IS – 0102094
Chapter 5 – Gauges and Displays
The aerial platform is equipped with several gauges to
monitor the condition of the machine before and during
operation.
Fuel
The fuel tank is translucent. The amount of fuel in the
tank can be gauged by opening the door on the front of
the machine (refer to Figure 5.1) and looking at the tank.
Figure 5.2 – Hydraulic Fluid Filter Gauge
Hydraulic Fluid Level Gauge
Fuel Level
The hydraulic fluid level gauge is on the front of the
hydraulic oil tank (refer to Figure 5.3) located behind the
doors on the left side of the chassis.
Figure 5.1 – Front of Chassis
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. 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 dipstick.
Hydraulic Fluid Filter Gauge
The fluid filter gauge (refer to Figure 5.2) is located on the
return line filter on the left side of the reservoir. The reservoir is behind the door on the left side of the turntable.
yy
During high pump flow situations, the gauge indicates
the condition of the filter.
yy
When the needle on the gauge is in the red zone, its
time to change the filter.
Figure 5.3 – Hydraulic Tank
Only read the fluid 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 fluid should be between the Full
and Add lines.
Bubble Levels
Bubble levels (refer to Figure 5.4) are located on the
right front and left rear of the chassis. When the bubbles
are centered, the chassis is level and the platform can
safely be raised.
Figure 5.4 – Bubble Level
S2770RT IS – 0102094
13
Chapter 5 – Gauges and Displays
14
S2770RT IS – 0102094
Chapter 6 – Controls
ADanger
Ground Operation Button
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 all personnel stand
clear while operating the aerial platform.
yy
Controls to position the platform are located on the
lower control panel on the chassis and on the upper
control panel in the platform.
yy
Controls to drive the aerial platform are located on the
upper control panel only.
Control Selector
Emergency Stop Button
Outrigger Controls
The outrigger controls (refer to Figure 6.1) are located on
the right side of the chassis. Each handle corresponds to
one of the outriggers.
ENABLE
LEFT
REAR
RIGHT
REAR
LEFT
FRONT
RIGHT
FRONT
yy
Hold the enable handle downward to activate the
outrigger controls.
yy
Hold an outrigger handle downward to lower the corresponding outrigger leg.
yy
Hold an outrigger handle upward to raise the corresponding outrigger leg.
Lower Controls
The lower controls (refer to Figure 6.2) are located on
the right side of the chassis. Only platform functions can
be operated from the lower controls. The following are
located on the lower control panel:
yy
yy
yy
yy
yy
Emergency stop button
Control selector
Ground operation button
Platform raise button
Platform lower button
S2770RT IS – 0102094
Platform
Lower
Button
Figure 6.2 – Lower Controls
Emergency Stop Button
The emergency stop is a two-position, red push button.
yy
Push the button inward to disconnect power to all
control circuits.
yy
Pull the button outward to restore power.
Control Selector
Use the control selector to select between lower control
and upper control operation.
yy
Place the arrow in the upper control position to
operate the aerial platform from the upper controls.
yy
Place the arrow in the lower control position to operate
the aerial platform from the lower controls.
0102102
Figure 6.1 – Outrigger Controls
Platform
Raise
Button
Ground Operation Button
The ground operation button must be pressed when
operating the platform raise or lower buttons from the
lower controls. The engine speed increases when the
button is held inward.
yy
Hold the button inward continually to operate the
platform raise or lower buttons from the lower controls.
Platform Raise Button
The platform raise button is used to raise the platform.
yy
To raise the platform, press and hold the ground operation button and the platform raise button. Release
the buttons when the desired height is reached.
Platform Lower Button
The platform lower button is used to lower the platform.
yy
To lower the platform, press and hold the ground operation button and the platform lower button. Release
the buttons when the desired height is reached.
15
Chapter 6 – Controls
Upper Controls
The upper controls (refer to Figure 6.3) are located on the
control panel at the platform. Scissor, platform, and drive
functions can be operated from the upper controls. The
following controls are located on the upper control panel.
yy
yy
yy
yy
yy
yy
Emergency stop button
Lift/drive handle
Steer handle
Drive range handle
Joystick
Horn
Lift/Drive
Handle
yy
Hold the steer handle in the left position to steer to
the left.
yy
Hold the steer handle in the right position to steer to
the right.
Note
The steering wheels are not self-centering. Set the steering wheels straight ahead after completing a turn.
Drive
Speed
Handle
Drive Speed Handle
The drive range handle has two positions to select drive
wheel operation when the platform is in the stowed position.
Emergency
Stop Button
Steer
Handle
Steer Handle
The steer handle is used to adjust the direction of the
steer wheels.
High Speed Drive – Rabbit
The high speed drive position is used to set the drive
speed to high while the platform is in the stowed position.
Joystick
yy
Place the handle in the Rabbit position to double the
top speed of the machine.
yy
To drive the machine forward at high speed, place the
handle in the Rabbit position and push the joystick
forward, the direction of the white arrow.
yy
To drive the machine in reverse at high speed, place
the handle in the Rabbit position and pull the joystick
backward, the direction of the black arrow.
Figure 6.3 – Upper Control Panel
Emergency Stop Button
The emergency stop is a two-position, red push button
on the top of the upper control panel (refer to Figure 6.3).
Push the button inward to disconnect power to all control
circuits at the upper controls. Pull the button outward to
restore power.
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.
Low Speed Drive – Turtle
The low speed drive position is used to set the drive
speed to low.
yy
Place the handle in Turtle position when working in
close quarters, climbing grades, or when unfamiliar
with the machine operation.
Push the emergency stop button inward when the upper
controls are not in use to protect against unintentional
operation.
yy
To drive the machine forward at low speed, place the
handle in the Turtle position and push the joystick
forward, the direction of the white arrow.
Lift/Drive Handle
Use the lift/drive handle to select between platform raise/
lower and machine drive operation.
yy
To drive the machine in reverse at low speed, place
the handle in the Turtle position and pull the joystick
backward, the direction of the black arrow.
yy
Place the handle in the platform position to operate the aerial platform raise and lower functions.
yy
Place the handle in the drive position to operate the
machine drive and steer functions.
Note
The platform may either be raised or lowered or driven.
Raise and lower function and drive functions cannot be
operated simultaneously.
16
Note
The drive range operates in Lo when the platform is out
of the stowed position, regardless of the drive speed
button selected.
Joystick
The joystick (refer to Figure 6.3) is used to either drive
the aerial platform or to raise and lower the platform after
selecting the appropriate function.
yy
Place the lift/drive handle in the drive position to use
the joystick to drive the aerial platform.
S2770RT IS – 0102094
Chapter 6 – Controls
yy
Place the lift/drive handle in the platform position to
use the joystick to raise and lower the aerial platform.
Movement of the joystick in a given direction produces
a corresponding movement of the aerial platform. The
steering and drive functions may be operated separately
or simultaneously.
Horn Button
The horn button is located on the left side of the upper
control panel.
Press the button to sound the horn.
Platform Foot Valve
The upper controls are interlocked through the platform
foot valve (refer to Figure 6.4). Step down on and hold
the platform foot valve to activate the drive and platform
functions from the upper controls.
Platform Foot
Valve
Figure 6.4 – Platform
S2770RT IS – 0102094
17
Chapter 6 – Controls
18
S2770RT IS – 0102094
Chapter 7 – Prestart Inspection
Potential service and safety problems may be detected
by inspecting the aerial platform. This chapter includes
information on properly inspecting the aerial platform and
includes a prestart inspection check list at the end of this
chapter to ensure that no areas are overlooked.
AWarning
The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury could result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
To inspect the engine:
1. Open the engine compartment doors and visually inspect the engine and its components with the engine
off.
2. Inspect the latch mechanisms to make certain they
are in good working condition to hold the engine cover
in place.
3. Make sure that the engine compartment doors are
fully closed and latched before operating the machine
after inspection or service.
Perform a prestart inspection at the beginning of each
shift, before using the aerial platform on the job. The
inspection site must have a smooth and level surface.
Oil Level
The proper oil level is between the add and full marks
on the dipstick.
Operator’s Manual
To inspect the oil level:
The manual holder is located at the front of the platform
(refer to Figure 7.1).
Operator’s Manual Holder
1. Make sure the engine has been off for at least five
minutes before checking the oil level. This will allow
time for the oil to drain to the pan for a more accurate
oil level reading.
2. Remove the dipstick and check to see that the oil
level is between the two marks.
3. If necessary, add oil before starting the engine.
Note
Refer to the engine manufacturers operations manuals
for the correct engine oil grade and weight.
Figure 7.1 – Operator’s Manual Holder
To inspect the operator’s manual and manual holder:
Air Intake
Deutz engines are air cooled. Visually inspect the air
intake and fan (refer to Figure 7.2) to be sure they are
free of obstructions that could stop or slow the flow of
air. Inspect the fan belt to see that it is in place and not
cracked.
1. Make certain the Operator’s Manual holder is securely fastened in place.
Fan
2. Check to see that the proper Operator’s Manual is in
the holder.
Fan Belt
3. Check to see that the manual is complete with all
pages intact and in readable condition.
4. Make certain ANSI publication “Manual of Responsibilities for Dealers, Owners, Users, Operators,
Lessors and Lessees of ANSI/SIA A92.6–2006 SelfPropelled Elevating Work Platforms” must also be in
the manual holder.
Engine
Visually inspect the engine and its components with the
engine off. The engine is located behind the doors on the
left side of the chassis.
S2770RT IS – 0102094
Figure 7.2 – Deutz Air Intake
Fuel Tank
The fuel tank is translucent. The amount of fuel in the
tank can be gauged by opening the door on the front of
the machine (refer to Figure 7.3) and looking at the tank.
19
Chapter 7 – Prestart Inspection
2. Open the doors on the right side of the chassis to
access the hydraulic fluid level gauge (refer to Figure
7.4).
Fuel Level
Figure 7.3 – Front of Chassis
To inspect the fuel tank:
1. Open the door on the front of the chassis to access
the fuel tank.
2. Visually check fuel level.
3. If necessary, add fuel.
Note
Refer to the engine manufacturers operations manuals
for the correct fuel grade specifications.
4. Make sure the cap is securely fastened.
Fuel Line
To inspect the fuel line:
1. Visually inspect the entire length of the fuel line starting at the fuel tank.
2. Trace the line to the engine, inspecting for leaks and
damage.
Hydraulic System
Hydraulic power is supplied from an engine driven variable displacement piston pump.
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.
Figure 7.4 – Hydraulic Tank
3. Make sure the fluid level is between the Full and Add
lines.
ACaution
Not all hydraulic fluid is suitable to use in the hydraulic system. Some have poor lubricating characteristics and may increase component wear. Only use
hydraulic fluid as recommended.
4. If necessary, remove the filler cap and add fluid of
the proper type. Replace the cap making sure it is
tightly in place.
Note
Refer to the engine manufacturers operations manuals for
the proper type and grade of hydraulic fluid to use. The
need to regularly add fluid indicates a leak that should
be corrected.
Fluid Filter
Checking the condition of the hydraulic fluid filter is part
of the machine maintenance schedule and should not be
performed by the operator.
Hoses, Tubes, and Fittings
To inspect the hoses, tubes and fittings:
1. Inspect all hydraulic hoses, tubes, and fittings for
wear, leakage, or damage (refer to Figure 7.5).
The hydraulic reservoir is behind the door on the right
side of the chassis. The pump is mounted on the engine.
Fluid Level
To inspect the fluid level:
1. Place the aerial platform on a level surface with the
platform fully stowed.
20
S2770RT IS – 0102094
Chapter 7 – Prestart Inspection
Punctures caused by bolts, screws, or nails are not a
problem for foam filled tires.
Outrigger Controls
Visually inspect and test the operation of each outrigger
from the outrigger controls (refer to Figure 7.7).
ENABLE
LEFT
REAR
RIGHT
REAR
LEFT
FRONT
RIGHT
FRONT
Figure 7.5 – Hoses, Tubes, and Fittings
2. Make sure the hoses are properly routed to avoid
sharp edges, kinking, and scuffing.
0102102
3. Inspect the tubes for dents or other damage that may
restrict fluid flow.
4. Make sure all hoses and tubes are held firmly in their
support brackets.
5. Check under the chassis for fluid that has leaked. Hydraulic fluid leaks are easily visible on the ground.
Tires and Wheels
Visually inspect the tires and wheels (refer to Figure 7.6)
to make sure they are suitable for service.
Figure 7.7 – Outrigger Controls
To inspect the outriggers:
yy
Inspect for hydraulic oil leaks and make sure the legs
and shoes are free of deformation and damage.
yy
Make sure that each outrigger leg will fully extend
and retract.
Bubble Levels
Visually inspect the bubble levels. Make sure they are
properly attached to the chassis and are not damaged.
Lower Control Station
With no personnel or materials in the platform, test the
operation of each control from the lower controls (refer
to Figure 7.8).
Ground Operation Button
Control Selector
Figure 7.6 – Tires and Wheels
Platform
Raise
Button
The aerial platform has foam filled tires. Foam filled tires
do not have a pressure decal or a valve core.
To inspect the tires and wheels:
1. Check the wheel lug nuts to see that none are missing, damaged, or loose.
2. Inspect for large holes or cuts where foam is coming
out of the tire. Look for large embedded objects, such
as angle iron, that can rip a tire open.
S2770RT IS – 0102094
Emergency Stop Button
Platform
Lower
Button
Figure 7.8 – Lower Controls
Operating Controls
Use the following procedure to operate the machine from
the lower controls.
21
Chapter 7 – Prestart Inspection
1. At the lower controls, pull the emergency stop button outward. Place the control selector in the lower
control position.
2. Start the engine.
3. Let the engine warm to operating temperature.
4. Press and hold the ground operation button.
Danger
Pinch points may exist between moving components.
Death or serious injury can result from becoming
trapped between components. Stand clear of moving
components while test operating the machine.
3. The pump handle is mounted next to the lower controls. Insert the handle into the pump (refer to Figure
7.9).
ADanger
Pinch points may exist between moving components.
Death or serious injury can result from becoming
trapped between components, buildings, structures,
or other obstacles. Make sure all personnel stand
clear of the aerial platform while performing the prestart inspection.
AWarning
The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury could result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
5. Test the operation of the platform raise and lower
buttons in both directions.
yy
To raise the platform press and hold the platform
raise button.
yy
To lower the platform press and hold the platform
lower button.
Emergency Stop
To test the emergency stop button from the lower controls:
1. Push the emergency stop button (refer to Figure 7.8)
inward.
2. Test the lower control functions to insure they no
longer operate.
Manual Emergency Lowering Pump
The platform can be lowered in an emergency using the
emergency lowering pump. The emergency lowering
pump is behind the cowling door on the right side of the
machine.
Use the following procedure to test the emergency lowering system.
1. Use the lower controls to raise the platform a few
feet.
2. Turn the engine off.
22
Scissor
Lower Knob
Brake
Release Knob
Pump
Main Control
Valve Assembly
Figure 7.9 – Manual Emergency Lowering Pump
4. Pull and hold the scissor lower knob outward while
pumping to lower the platform. Stop pumping and
release the knob to stop descent of the platform.
5. Place the pump handle back in its holder.
Structures
Visually inspect all weldments and related components.
It is important to inspect the fasteners that connect the
components.
Weldments
To inspect the weldments:
1. Visually inspect all weldments for abnormal wear,
abrasion, or deformation that could cause interference between moving parts.
2. Inspect the welds on the structural components. Pay
particular attention to arm welds around pin bosses.
The area to be inspected should be clean and free
of dirt and grease.
3. Look for visible cracks in the welds and at the weld
to parent material joints. A bright light may be used
to provide adequate visibility of the inspection area.
Rollers and Slide Blocks
To inspect the rollers and slide blocks:
1. Visually inspect the scissors arm rollers at the front
of the platform (refer to Figure 7.10). They must be
free to move without obstruction. There is one roller
on each side of the platform.
S2770RT IS – 0102094
Chapter 7 – Prestart Inspection
Top Rail
Mid Rail
Entry
Gate
Roller
Figure 7.10 – Front of Platform
2. Raise the platform from the lower controls and visually inspect the slide blocks at the rear of the chassis
(refer to Figure 7.11). There is one slide block on each
side of the chassis. The slide blocks must be in good
condition and free to move without obstruction.
Toeboard
Figure 7.12 – Platform
To inspect the guardrail system:
1. Inspect all components of the guardrail system. The
rails and toeboards must all be in place and free of
any damage or deformation.
2. Visually check the rail and toeboard welds for cracks.
3. Visually check all bolts and nuts fastening the platform
in place. They must be present and not show any
signs of looseness.
Slide Block
4. Inspect the entry gate so see that it swings freely,
latches securely, and is not deformed in any way.
Lanyard Anchors
There are six lanyard anchors on the floor of the platform
(refer to Figure 7.13):
Figure 7.11 – Front of Chassis
Fasteners
To inspect the fasteners:
1. Visually inspect all fasteners to see that none are
missing or loose.
2. Inspect all of the bolts, nuts, rollpins, collars, and snap
rings that connect the elevating assembly. They should
all be present, tight, and not damaged in any way.
Upper Control Station
Inspect the platform and upper controls, after verifying
all functions operated properly from the lower controls.
Guardrail System
The guardrail system includes (refer to Figure 7.12):
yy
yy
yy
yy
A top rail
A mid rail
An entry gate
Toeboards around the sides of the platform.
S2770RT IS – 0102094
Lanyard Anchor
Figure 7.13 – Platform Floor
To inspect the lanyard anchors:
1. Visually inspect the lanyard anchors to make sure
they are in place and are not deformed.
2. Make sure the brackets are not deformed and that
they are securely fastened to the platform floor.
23
Chapter 7 – Prestart Inspection
Platform Extension Deck
Latch handles on each side of the extension deck secures
the extension deck to the main platform deck.
ACaution
The extension deck is free to move when the extension handle locks are disengaged. Personal injury
may result from accidentally extending or retracting
the deck. Make certain both extension handle locks
are fully engaged when the deck is extended in the
working position and when it is stowed. Do not attempt to extend or retract the platform unless the
aerial platform is on a level surface.
7. Make sure the platform extension deck is locked in
position.
Operating Controls
Use the following procedure to operate the machine from
the upper controls.
1. At the lower controls, pull the emergency stop button
outward and place the control selector in the upper
control position.
2. At the upper controls (refer to Figure 7.15), pull the
emergency stop button outward.
Lift/Drive
Handle
To inspect the platform extension:
1. Inspect the extension handles and locks (refer to
Figure 7.14) on each side of the platform to ensure
they release to extend the platform.
Slot on Guardrail
Drive
Speed
Handle
Emergency
Stop Button
Steer
Handle
Joystick
Extension Handle
Figure 7.15 – Upper Controls
Lock
Figure 7.14 – Platform Extension Handle
2. While facing the front of the platform, release the
platform extension handle locks. Grasp the handles,
raise them and push the extension deck forward to
the desired position. Fully lower the handles and
ensure the lock on each handle is engaged in the
slot on the platform guardrail (refer to Figure 7.14).
3. Inspect the rollers on the platform extension. They
must be in place, in good condition, and free to move
without obstruction.
4. Inspect the weldments for deformation and damage.
Try to move the rails back and forth to make sure the
platform extension deck fully locks in position.
5. Visually check the platform welds for cracks.
6. While facing the front of the platform, release the
platform extension handle locks. Grasp the handles,
raise them and pull the extension deck backward to
retract the deck. Fully lower the handles at the fully
retracted, stowed position. Ensure the lock on each
handle is engaged in the slot on the platform guardrail
(refer to Figure 7.14).
24
3. Start the engine and let it warm to operating temperature.
Danger
Pinch points may exist between moving components.
Death or serious injury can result from becoming
trapped between components, buildings, structures,
or other obstacles. Make sure all personnel stand
clear of the aerial platform while performing the prestart inspection.
Warning
The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury can result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
4. Test the platform foot valve by moving the joystick
without stepping on the foot valve. If movement occurs the interlock is not functioning properly. Do not
operate the machine until the problem is corrected.
5. Test the operation of each control in both directions
from the upper controls.
6. The drive range and maximum travel speeds are
interlocked through a limit switch on the chassis that
senses the platform position. When the platform is
S2770RT IS – 0102094
Chapter 7 – Prestart Inspection
raised approximately 1′ (0.3 m) the machine should
travel in low speed only. To operate in high speed the
platform must be stowed.
Emergency Stop
To test the emergency stop button from the upper controls:
1. Push the emergency stop button (refer to Figure 7.15)
inward to block hydraulic power to the upper controls.
2. Test the upper controls to ensure they no longer
operate.
Horn Button
The horn button is operational when the pressure in the
air tank is sufficient to sound the horn.
With the engine running, press the horn button to ensure
that it sounds to warn personnel in the area.
Placards and Decals
To inspect the placards and decals:
1. Inspect all safety and operational placards and
decals. Make certain they are in place, in good condition, and are legible.
2. Clean the placards and decals with soap and water,
and a soft cloth if the words or pictures cannot be
seen.
ACaution
Solvents may contain hazardous ingredients. Follow
the manufacturer’s label for proper use and disposal. Wear protective gloves and splash-proof safety
glasses when using solvents.
3. Remove wet paint overspray with a natural biodegradable solvent and a soft cloth.
4. Replace any missing, damaged, or illegible placards
or decals before operating the aerial platform.
Placard and decal kits are available from Snorkel.
The safety related placards and decals are illustrated on
the following pages.
S2770RT IS – 0102094
25
Chapter 7 – Prestart Inspection
Left Side
DEATH OR SERIOUS INJURY CAN RESULT FROM TIPPING OVER.
TO KEEP FROM TIPPING THIS MACHINE OVER FOLLOW THESE RULES.
DO NOT RAISE OR DRIVE AN ELEVATED
PLATFORM ON A
SLOPE
DO NOT RAISE OR DRIVE AN ELEVATED
PLATFORM ON
SOFT OR UNEVEN
SURFACES
GO NO CLOSER THAN 4 feet (1.2m)
to ANY DROP OFF
OR HOLE
DO NOT RAISE A PLATFORM
IN WIND ABOVE 28 MPH (12.5 M/S)
4 FT/1.2M
OTHER ACTIONS CAN ALSO CAUSE THIS MACHINE TO TIP OVER
DO NOT override safety devices.
DO NOT overload the machine.
DO NOT stand or sit on guardrails.
DO NOT attach ropes or chains to guardrails.
DO NOT carry loads outside the railing or use
as a crane.
TWO-TONE ALARM MEANS TIPOVER DANGER!
LOWER PLATFORM IMMEDIATELY
1.
2.
DO NOT ride platform while machine is on a truck, fork
lift or other device.
DO NOT use ladder, scaffold, or other means to
increase size or platform height.
DO NOT use with improperly inflated or damaged tires
or wheels.
OK
3.
OK
4 FT/1.2M
DO NOT use this machine without the railings and the
entry gate in place. You could
fall out and hurt or kill yourself.
DO NOT use this machine if it is not operating correctly,
or if any part of it is damaged,
worn, or missing. An accident
could cause injury or death.
TO AVOID
TIPOVER HAZARDS
USE ON
FLAT, LEVEL, AND
SOLID SURFACES
ONLY
DO NOT let an untrained or unauthorized person use this machine.
When you leave the machine unattended,
remove the key, or turn off the battery
switch on the base of the machine and lock
the battery switch in the off position.
DO NOT replace components critical to machine stability, such as
batteries and wheel equipment, with lighter
NOTE: STUDY THE OPERATOR'S MANUAL BEFORE OPERATING THIS MACHINE.
12574
Rear
26
S2770RT IS – 0102094
Chapter 7 – Prestart Inspection
DANGER
SHEARING HAZARD/CRUSHING HAZARD
Death or serious injury might result from
having body parts sheared or crushed as the
platform descends. Keep away from closing
scissor arms and keep out from under the
platform as the platform comes down.
300700
DANGER
YOU MUST NOT OPERATE THIS DEVICE UNLESS:
1. YOU HAVE BEEN TRAINED IN THE SAFE OPERATION OF THIS
DEVICE AND
HHHH
2. YOU KNOW AND FOLLOW THE SAFETY AND OPERATING
RECOMMENDATIONS CONTAINED IN THE MANUFACTURER'S
MANUALS, YOUR EMPLOYER'S WORK RULES, AND APPLICABLE GOVERNMENTAL REGULATIONS.
HHHHHHHH
AN UNTRAINED OPERATOR SUBJECTS HIMSELF AND OTHERS TO
Right Side
DEATH OR SERIOUS INJURY.
0323897
SAFETY BAR
24”
STORAGE POSITION
PROPER POSITION FOR USE
S2770RT IS – 0102094
27
Chapter 7 – Prestart Inspection
28
S2770RT IS – 0102094
Chapter 7 – Prestart Inspection
Prestart Inspection Checklist
Item
Operator’s Manual
Engine
Oil Level
Fuel tank and line
Hydraulic System
Fluid level
Hoses, tubes and fittings
Tires
Wheels
Lower Control Station
Operating controls
Emergency stop
Outriggers
Operating controls
Bubble levels
Manual Emergency Lowering Pump
Structures
Weldments
Rollers and slide blocks
Fasteners
Upper Control Station
Guardrail system
Platform extension/latch handles
Lanyard anchors
Operating controls
Emergency stop
Horn
Placards and Decals
S2770RT IS – 0102094
Inspect For
In place, all pages readable and intact
OK
Between full and add marks
Tank full, cap in place and tight/no leaks
Between minimum and maximum marks, cap in place and tight
No leaks
Good condition
All wheel lug nuts present and properly torqued
Proper operation
Shuts off lower controls/proper operation
Proper operation
In place, no deformation or damage
Proper operation
Welds intact, no damage or deformation
In place, no damage or deformation
In place, tight, and no damage
Welds intact, no damage or deformation
Proper operation, no damage or deformation
In place, no damage or deformation
Proper operation
Shuts off upper controls/proper operation
Sounds when activated
In place and readable
29
Chapter 7 – Prestart Inspection
30
S2770RT IS – 0102094
Chapter 8 – Operation
The aerial platform may be operated from either the lower
or upper controls.
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.
ACaution
Not all hydraulic fluid is suitable to use in the hydraulic system. Some have poor lubricating characteristics and can increase component wear. Only use
hydraulic fluid as recommended.
Use cold weather hydraulic oil as recommended in the
machine General Specifications in temperatures of 10°F
(0°C) or below.
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 or platform. Allow sufficient room and time
to stop movement to avoid contact with structures
or other hazards.
Preparing for Operation
The aerial platform can tip over if it becomes unstable.
Death or serious injury will result from a tip-over
accident. Operate the aerial platform on a firm, flat,
level surface. Avoid travel speeds and/or rough terrain that could cause sudden changes in platform
position. 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.
Before operating the outrigger controls, properly set up
the aerial platform as described under Preparing for
Operation.
The platform rated work load is the total weight of the
personnel and equipment that may be lifted in the platform.
The work loads are stated on the platform rating placard
at the entrance to the platform.
ADanger
The aerial platform can tip over if it becomes unstable.
Death or serious injury will result from a tip-over accident. Do not exceed the capacity values indicated
on the platform rating placard.
Use the following procedure to prepare the aerial platform
for operation:
1. Perform a prestart inspection as described in Chapter 7.
2. Close and latch the doors.
Outriggers
ADanger
The aerial platform can tip over if it becomes unstable.
Death or serious injury will result from a tip-over accident. Make certain that the ground surface is capable
of supporting the weight of the machine including
personnel and work equipment in the platform.
Use the following procedure to properly set the outriggers
using the outrigger controls:
1. Start the engine and let it warm to operating temperature.
2. Hold the enable handle (refer to Figure 8.1) downward while operating the outrigger controls.
Capacity values indicate the rated lifting capacity and do
not indicate aerial platform stability.
The operator bears ultimate responsibility for ensuring
that the aerial platform is properly set up for the particular
conditions encountered.
ENABLE
LEFT
REAR
RIGHT
REAR
LEFT
FRONT
RIGHT
FRONT
Hydraulic System Cold Weather Warm-Up
Cold, thick hydraulic oil does not flow well and may cause
delay in response to control movement. Cold hydraulic oil
may also cause cavitation and pump damage.
Manually Warming The Hydraulic System
The hydraulic oil may be warmed by bottoming out the
platform lift cylinder. Lower the platform so the cylinder is
completely retracted and continue to operate the platform
lower function. With the cylinder bottomed out the oil flow
will produce heat to warm the hydraulic oil.
S2770RT IS – 0102094
0102102
Figure 8.1 – Outrigger Controls
3. Hold an outrigger handle downward to lower the outrigger leg until the pad contacts the ground. Repeat
until all four outriggers have been lowered. At least
one of the outriggers should raise a tire above ground.
31
Chapter 8 – Operation
4. Watch the bubble level while setting the outriggers.
Lower the outriggers, one at a time, just enough to
center the bubble in the circle on top of the gauge.
5. Adjust the position of the outrigger legs until the bubbles (refer to Figure 8.2) are centered between the
marks on the levels, indicating that the chassis is level.
Figure 8.2 – Bubble Levels
Use the following procedure to raise the outriggers using
the outrigger controls:
1. Fully lower the platform to the stowed position.
2. Hold the enable handle (refer to Figure 8.1) downward while operating the outrigger controls.
3. Hold an outrigger handle upward to raise the outrigger
leg. Repeat until all four outriggers have been fully
raised.
Operating with Outriggers Lowered on Slopes
If the machine is raised off the ground using the outriggers, there is risk of it sliding if it is on a slope or ramp.
Contributing factors include newly painted surfaces, icy,
wet or oily surfaces, as well as sandy or any loosely covered surface. Do not position the machine on surfaces
where there is risk of it sliding.
Sliding can occur if the platform is elevated or when fully
lowered.
Figure 8.3 – Stepped Level Surfaces
Do not position the machine where there is risk of it sliding
due to unstable surfaces (refer to Figure 8.4).
Do not attempt to use wheel chocks or outrigger pads
beneath the outrigger foot or the tires.
The outrigger feet must be lowered only onto a firm surface that can fully support the weight of the machine and
its rated capacity.
Positioning the outrigger feet on stepped level surfaces
is acceptable (refer to Figure 8.3).
32
S2770RT IS – 0102094
Chapter 8 – Operation
Use the following procedure to operate the machine from
the lower controls:
1. Pull the emergency stop button (refer to Figure 8.5)
outward, to the on position and place the control
selector in the lower control position.
Ground Operation Button
Platform
Raise
Button
Control Selector
Emergency Stop Button
Platform
Lower
Button
Figure 8.5 – Lower Controls
2. Start the engine and let it warm to operating temperature.
ADanger
Pinch points exist on the elevating assembly. Death
or serious injury will result if the platform lowers onto
personnel. Stand clear while raising and lowering
the platform.
3. Press and hold the ground operation button while
operating the appropriate platform raise or lower
button to raise or lower the platform.
4. Release the function button to stop movement.
Figure 8.4 – Sloped Surfaces
Lower Controls
The lower controls override the upper controls. This
means that the lower controls can always be used to
operate the platform regardless of the position of the
upper control emergency stop button.
Only the platform raise and lower functions may be operated from the lower controls. The lower controls may be
used for initial set up of the aerial platform, and for positioning the platform while testing and during inspection.
Before operating the lower controls, properly set up the
aerial platform as described under Preparing for Operation.
Upper Controls
The upper controls may be used for driving and positioning the aerial platform while on the job.
Before operating the upper controls, properly set up the
aerial platform as described under Preparing for Operation.
Use the following procedure to operate the aerial platform
from the upper controls:
1. At the lower controls, pull the emergency stop button
(refer to Figure 8.5) outward, to the on position and
place the control selector in the upper control position.
2. Start the engine and let it warm to operating temperature.
3. Enter the platform and securely close the gate.
S2770RT IS – 0102094
33
Chapter 8 – Operation
4. Determine the desired drive range for the specific
driving conditions. Place the drive range handle (refer
to Figure 8.6) in the appropriate position to achieve
the desired drive wheel operation.
• Use high range – Rabbit when traveling across
firm, flat, level surfaces. High range can only be
activated when the platform is stowed. High range
is for high speed, low torque operation.
2. Place the lift/drive handle in the lift position.
3. Step down on the platform foot valve (refer to Figure
8.7). This valve must be held down to operate the
upper controls.
• Use low range – Turtle for driving on loading
ramps or other steep grades and when safety
considerations demand slow deliberate machine
movement. Low range is for low speed, high torque
operation.
Lift/Drive
Handle
Platform Foot
Valve
Drive
Speed
Handle
Emergency
Stop Button
Figure 8.7 – Platform
4. Push the joystick forward to raise the platform.
Steer
Handle
Joystick
5. Pull the joystick backward to lower the platform.
6. If the tilt alarm sounds, lower the platform and drive
to a level surface or activate the speed level to level
the platform.
Figure 8.6 – Upper Controls
Platform
Use care when entering and exiting the platform to avoid
slipping and/or falling. Fully close the entry gate when the
platform is occupied.
ADanger
The potential for an accident increases when the fold
down rails are lowered. Death or serious injury can
result in such accidents. Do not elevate the platform
with the fold down rails lowered. Use extreme care
when moving the aerial platform while the fold down
rails are lowered.
Be sure the fold down guardrails are up and the hardware
is securely tightened, anytime the machine is not being
transported.
Raising and Lowering
The raise speed is proportional to the joystick position.
The farther the joystick is moved, the faster the platform
raises. There is only one lowering speed.
7. Releasing the control to its neutral position, or releasing the foot valve will stop movement.
Driving and Steering
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over
accident. Do not drive an elevated aerial platform on
soft, uneven, or sloping surfaces. Do not drive the
machine on grades that exceed 30 percent.
A fully stowed machine may be operated on grades up
to 30 percent. A grade of 30 percent is a 36″ (0.91 m)
vertical rise in 10′ (3.05 m) horizontal length.
AWarning
Death or serious injury could result from improperly
driving or steering the aerial platform. 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.
Use the following procedure to raise the platform:
1. Move the aerial platform to a firm, flat, level surface.
34
S2770RT IS – 0102094
Chapter 8 – Operation
Use the following procedure to operate the drive and
steer functions.
1. Place the lift/drive handle (refer to Figure 8.6) in the
drive position.
2. Step down on the platform foot valve.
Do not use the aerial platform if it drives faster than
0.64 mph (1 km/h) when the platform is out of the stowed
position.
Fold Down Guardrails
The platform guardrails may be folded down to pass the
machine under low height obstructions.
3. Push the drive joystick forward to move the chassis
forward. Pull the joystick backward to move the
chassis backward. The drive speed is proportional
to the joystick position.
A ½″ wrench and socket will be needed to remove the
hardware from the guardrail.
4. To stop drive motion, return the joystick to neutral.
The potential for an accident increases when the fold
down rails are lowered. Death or serious injury can
result in such accidents. Do not elevate the platform
with the fold down rails lowered. Use extreme care
when moving the aerial platform while the fold down
rails are lowered.
Note
To make an emergency stop push the emergency stop
inward button to apply the parking brakes.
5. The steer handle controls the two front wheels to
steer the aerial platform.
yy
To steer to the right, hold the handle in the steer
right position.
yy
To steer to the left, hold the handle in the steer
left position.
Note
The steering wheels are not self-centering. Set the steering wheels straight ahead after completing a turn.
6. After driving to the desired location, release the foot
valve, or push the emergency stop button inward to
apply the parking brakes.
Drive Speeds
The drive speed is proportional to the joystick position. The
farther the joystick is moved, the faster the travel speed.
Always slow down and switch the drive system to low
range before traveling over rough terrain or any sloped
surface.
ADanger
Use the following procedure to fold down the guardrails:
1. From the lower controls, fully lower the platform and
turn the machine off.
2. Enter the platform and close the gate.
3. Remove the upper control panel from the side guardrail and place it on the floor of the platform.
ACaution
The rails are free to move downward after removing
the hardware. Improper lifting can cause personal
injury. Be prepared to hold the weight of the rails
before beginning to lower them onto the platform.
4. At the front of the platform, remove the snapper pins
from the corners of the front guardrail. Refer to Figure
8.8.
Drive speed ranges are interlocked through limit switches
that sense the platform position.
yy
When the platform is elevated, only the slowest
drive speed will work regardless of the drive speed
selected.
yy
To avoid a sudden speed change from high to low,
always bring the machine to a stop before raising the
platform from the stowed position.
AWarning
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.
S2770RT IS – 0102094
Front Guardrail
Hardware
Figure 8.8 – Platform
5. Fold the front guardrail inward so it rests on the platform.
35
Chapter 8 – Operation
6. At the rear of the platform, close and latch the entry
gate and remove the hardware snapper pins from
the corners of the rear guardrail. Refer to Figure 8.9.
Rear Guardrail
Hardware
Side Guardrail Hardware
ACaution
The extension deck is free to move when the extension handle locks are disengaged. Personal injury
may result from accidentally extending or retracting
the deck. Make certain both extension handle locks
are fully engaged when the deck is extended in the
working position and when it is stowed. Do not attempt to extend or retract the platform unless the
aerial platform is on a level surface.
2. While facing the front of the platform, release the
platform extension handle locks. Grasp the handles,
raise them and push the extension deck forward to
the desired position. Fully lower the handles and
ensure the lock on each handle is engaged in the
slot on the platform guardrail (refer to Figure 8.10).
Slot on Guardrail
Figure 8.9 – Lower Controls
7. Fold the rear guardrail inward so it rests on the platform being careful to keep the entry gate latched.
8. Lift up on the right guardrail and fold it inward so it
rests on the platform. Repeat with the left guardrail.
yy
Extension Handle
If the guardrail will not fold down, loosen the
hardware at the bottom of the side guardrail.
Use the following procedure to reassemble the guardrails before operating the aerial platform from the upper
controls:
1. Fully raise the right guardrail to the upright position
and push downward on the guardrail making sure it
securely sets into the platform. Repeat with the left
guardrail.
2. Fully raise the rear guardrail to the upright position,
being careful to keep the entry gate latched. Connect
the rear guardrail to the left and right guardrail by
reinstalling the hardware (nuts, bolts, spacer, washers etc.) to the corners of the guardrails and tighten
securely.
3. Fully raise the front guardrail to the upright position.
Connect the rear guardrail to the left and right guardrail by reinstalling the snapper pins to the corners of
the guardrails.
Platform Extension Deck
The platform extension deck can be securely locked into
eleven different positions.
Use the following procedure to extend the platform.
1. Enter the platform and secure the door.
Lock
Figure 8.10 – Platform Extension Handles
3. Lock the extension handles in the downward position.
Use the following procedure to retract the platform.
1. Enter the platform and secure the door.
ACaution
The extension deck is free to move when the extension handle locks are disengaged. Personal injury
may result from accidentally extending or retracting
the deck. Make certain both extension handle locks
are fully engaged when the deck is extended in the
working position and when it is stowed. Do not attempt to extend or retract the platform unless the
aerial platform is on a level surface.
2. While facing the front of the platform, release the
platform extension handle locks. Grasp the handles,
raise them and pull the extension deck backward to
retract the deck. Fully lower the handles at the fully
retracted, stowed position. Ensure the lock on each
handle is engaged in the slot on the platform guardrail
(refer to Figure 8.10).
3. Lock the extension handles in the downward position.
36
S2770RT IS – 0102094
Chapter 9 – Stowing and Transporting
To prevent unauthorized use and damage, properly stow
the aerial platform at the end of each work day. It must
also be properly stowed while transporting.
Stowing
Use the following procedure to properly stow the aerial
platform.
1. Fully retract the extension deck and lower the platform.
2. At the upper controls, push the emergency stop
button inward.
3. Close and latch the platform entry gate.
yy
Choosing the proper selection and use of transportation and tie-down devices.
yy
Making sure the equipment used is capable of supporting the weight of the aerial platform.
yy
Making sure all manufacturer’s instructions and warnings, regulations and safety rules of their employer,
the DOT, and/or any other state or federal law are
followed.
Driving
Use the following procedure to drive the aerial platform
onto the transport vehicle:
4. Completely raise all four outriggers..
1. Locate the transport vehicle so it is in a straight line
with the loading ramp.
5. At the lower controls, push the emergency stop button
inward.
2. Chock the vehicle wheels so it cannot roll away from
the ramp while the machine is loaded.
6. If the engine has just been under load and is hot, let
it idle for five minutes before turning it off.
3. Remove tools, materials, or other loose objects from
the platform.
7. Close and latch the cowling doors.
4. Fully lower the aerial platform into the stowed position.
Transporting
The aerial platform may be moved on a transport vehicle.
Depending on the particular situation, the aerial platform
may be driven, lifted with a forklift, winched, or hoisted
onto a vehicle such as a truck or trailer. Driving is the
preferred method.
ADanger
The aerial platform can tip over if it becomes unstable.
Death or serious injury will result from a tip-over accident. Do not drive on ramps that exceed 30 percent
grade, or where conditions of the ramp could cause
driving to be hazardous.
Drive the aerial platform onto the transport vehicle if the
ramp incline is within the 30 percent grade capability of
the aerial platform.
A 30 percent grade is a 36″ (0.91 m) vertical rise in 10′
(3.05 m) horizontal length.
Use a winch to load and unload the aerial platform on
ramps that exceed the grade capability of the machine.
A winch may also be used when conditions of the ramp
could cause driving to be hazardous.
The equipment used to load, unload, and transport the
aerial platform must have adequate capacity. Refer to
Chapter 2 to determine the approximate weight of the
aerial platform.
The user assumes all responsibility for:
yy
Choosing the proper method of transportation.
S2770RT IS – 0102094
ACaution
The aerial platform has low ground clearance. Make
certain that the transition from the loading ramp to
the trailer is not sharp enough that the bottom of the
machine drags while loading.
5. Using the upper controls, drive the aerial platform
to the foot of the loading ramp with the front wheels
nearest the ramp. Make sure the aerial platform is
centered with the ramps and that the steering wheels
are straight.
ADanger
The aerial platform can tip over if it becomes unstable.
Death or serious injury will result from a tip-over accident. Set the drive range to low before driving up
or down a grade.
6. Place the drive speed handle in the low position.
7. Drive the aerial platform onto the transport vehicle
in a straight line through the grade transitions with
minimal turning.
8. Chock the machine wheels.
Lifting With a Forklift
Use the following procedure to lift the aerial platform with
a forklift.
1. Properly stow the aerial platform.
2. Remove all personnel, tools, materials, or other loose
objects from the platform.
37
Chapter 9 – Stowing and Transporting
ADanger
Lifting the aerial platform with the forklift forks positioned improperly can produce enough force to damage machine components. When lifting the machine
from the side, place the forklift forks directly under
the designated lift points.
3. To lift the machine from the side, place the forklift forks
directly under the designated points under the chassis.
4. Do not raise the aerial platform higher than necessary
to transport it. Drive the forklift slowly and carefully
when transporting the aerial platform.
7. Open the door on the right side of the chassis to
access the manual emergency lowering pump (refer
to Figure 9.2).
Scissor
Lower Knob
Valve
Brake
Release Knob
Pump
Main Control
Valve Assembly
Winching
Use the following procedure to winch the aerial platform
onto the transport vehicle:
1. Position the transport vehicle so the aerial platform
will not roll forward after it is loaded.
Figure 9.2 – Manual Emergency Lowering Pump
2. Remove tools, materials, or other loose objects from
the platform.
8. The pump handle is mounted next to the lower controls. Insert the handle into the pump (refer to Figure
9.2).
3. Drive the machine to the foot of the loading ramp
with the front wheels nearest the ramp. Make sure
the machine is centered with the ramps and that the
steering wheels are straight.
9. Pull the brake knob outward and twist to lock in position.
4. Properly stow the aerial platform.
5. Chock the wheels to prevent uncontrolled motion of
the aerial platform.
6. Attach the winch to the tie-down lugs (refer to Figure
9.1) on the front of the chassis.
10. Fully turn the valve counterclockwise until loose.
11. Pump the handle several times until pressurized then
stow the handle.
12. Remove the wheel chocks and use the winch to
position the aerial platform on the transport vehicle.
AWarning
The aerial platform is free to move when the brakes
are released. Death or serious injury could result.
Re-enable the brakes before operating the aerial
platform.
12. After moving the aerial platform, fully turn the valve
clockwise until tight and twist to unlock the brake
knob.
13. After unloading the aerial platform from the transport
vehicle, verify that the drive system and brakes operate properly before operating the aerial platform.
Tie-Down/Lifting Lugs
Figure 9.1 – Front Tie-Down/Lifting Lugs
AWarning
The aerial platform is free to move when the brakes
are released. Death or serious injury could result.
Re-enable the brakes before operating the aerial
platform.
38
Hoisting
Use a four point sling arrangement attached to the lifting
lugs when hoisting the aerial platform. Machine damage
can occur if the sling is attached anywhere else.
AWarning
The potential for an accident increases when the
aerial platform is lifted using improper equipment
and/or lifting techniques. Death or serious injury
S2770RT IS – 0102094
Chapter 9 – Stowing and Transporting
could result from such accidents. Use proper equipment and lifting techniques when lifting the aerial
platform.
Know the weight of the aerial platform and the capacity
of the lifting devices before hoisting.
yy
Lifting devices include the hoist or crane, chains,
straps, cables, hooks, sheaves, shackles, slings, and
other hardware used to support the machine.
yy
The empty vehicle weight is stamped on the serial
number placard and is listed in Chapter 2.
Do not run the sling cable through the lifting lugs.
yy
Cable damage and/or failure can result from the
cable contacting the sharp corners of the lug.
yy
There is no effective way of putting a corner
protector in the hole of the lug.
5. Use spreader bars of sufficient length to keep the
chains, straps, or cables from contacting the elevating assembly or platform.
yy
When using cables, use rigid corner protectors
at any point where the cable contacts on sharp
corners to prevent damaging the cable.
yy
Careful rigging of the spreaders is required to
prevent machine damage.
The user assumes all responsibility for:
yy
Making sure the equipment used is capable of supporting the weight of the aerial platform.
yy
Making sure all manufacturer’s instructions and warnings, regulations and safety rules of their employer
and/or any state or federal law are followed.
Use the following procedure to hoist the aerial platform
onto the transport vehicle:
1. Properly stow the aerial platform.
2. Inspect the front lifting lugs and the rear lifting lugs
(refer to Figures 9.1 and 9.3) to make sure they
are free of cracks and are in good condition. There
are four lugs on the rear of the chassis and two on
the front. Have any damage repaired by a qualified
service technician before attempting to hoist the
machine.
6. Adjust the length of each chain or strap so the aerial
platform remains level when raised off the ground.
7. Use the hoist or crane to carefully raise and position
the aerial platform onto the transport vehicle.
Securing for Transport
Use the following procedure to secure the aerial platform
on the transport vehicle:
1. Chock the wheels.
2. Remove all personnel, tools, materials, or other loose
objects from the platform.
3. Properly stow the aerial platform.
4. Place the lower controls emergency stop button in
the off position.
5. Close and latch the cowling doors.
ACaution
Ratchets, winches, and come-alongs may produce
enough force to damage machine components. Do
not over tighten the straps or chains when securing
the aerial platform to the transport vehicle.
Tie-Down/Lifting Lugs
Figure 9.3 – Rear Tie-Down/Lifting Lugs
6. Use chains or straps to securely fasten the aerial
platform to the transport vehicle using the front and
rear tie-down lugs as attachment points. Proper tiedown and hauling is the responsibility of the carrier.
3. Remove all personnel, tools, materials, or other loose
objects from the platform.
4. Connect the chains or straps to the lifting lugs using
bolted shackles. Hooks that fit properly in the lugs
and that have latching mechanisms to prevent them
from falling out under a slack line condition may also
be used.
S2770RT IS – 0102094
39
Chapter 9 – Stowing and Transporting
40
S2770RT IS – 0102094
Chapter 10 – Emergency Operation
If the hydraulic system fails, the aerial platform may be
lowered using the manual emergency lowering pump.
Manual Emergency Lowering Pump
The emergency lowering pump allows the platform to be
lowered only. Only use this method if the engine will not
start and the hydraulic system has failed.
Use the following procedure to manually lower the platform.
ADanger
Pinch points exist on the elevating assembly. Death
or serious injury will result if the platform lowers onto
personnel. Stand clear while raising and lowering
the platform.
1. Open the door on the right side of the chassis to
access the manual emergency lowering pump.
2. The pump handle is mounted next to the lower controls. Insert the handle into the pump (refer to Figure
10.1).
Scissor
Lower Knob
Brake
Release Knob
Pump
Main Control
Valve Assembly
Figure 10.1 – Behind Right Cowling Door
3. Pull and hold the scissor lower knob outward while
pumping to lower the platform. Stop pumping and
release the knob to stop descent of the platform.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious injury could result from such accidents. Fully close the
platform knob before operating the aerial platform.
4. Place the pump handle back in its holder.
S2770RT IS – 0102094
41
Chapter 10 – Emergency Operation
42
S2770RT IS – 0102094
Chapter 11 – Troubleshooting
The troubleshooting chart may be used to locate and
eliminate situations where machine operation may be
interrupted. If the problem cannot be corrected with the
action listed, stow the machine and remove it from service. Repairs must be made by qualified maintenance
personnel.
Troubleshooting Chart
Symptom
Possible Cause
Corrective Action
All functions stop working.
Low fluid level in reservoir.
Check fluid level. Add correct type
of fluid if necessary.
Engine or pump failure.
Manually lower the platform using
the emergency lowering knob.
Emergency stop button at lower controls is pushed in to the off position.
Pull the emergency stop button
outward.
Control selector is in the upper
control position.
Place the selector in the lower control position.
Ground operation button not held in
the on position.
Press and hold the ground operation button inward while operating
the control buttons.
Emergency stop buttons at lower and
upper controls is in the off position.
Pull the emergency stop buttons
outward.
Control selector at lower controls is
in the lower control position.
Place the selector in the upper
controls position.
Platform foot valve not engaged.
Step down on platform foot valve
while operating controls.
Platform and drive functions
seem sluggish.
Hydraulic oil is cold and thick.
Use cold weather hydraulic oil as
recommended for weather conditions. Warm oil before operating
the machine.
Platform drifts down.
Hydraulic system malfunction.
Stow the machine and do not operate until repairs are made.
Can not reach maximum drive
speed of 2.8 mph (4.5 km/h).
Load capacity exceeded.
Remove load from platform. Refer
to platform capacity placard for
maximum capacity.
Machine on too steep a grade.
Fully lower the platform and drive to
a level surface.
Drive range handle is in low.
Place the handle in the high position.
Platform is stowed.
Normal operation. The tilt alarm is
operational only when the platform
is elevated.
Lower controls do
not work.
Upper controls do
not work.
Tilt alarm does not work.
S2770RT IS – 0102094
43
Chapter 11 – Troubleshooting
Symptom
Possible Cause
Corrective Action
Drive functions do
not work.
Machine on too steep a grade.
Lower the booms and drive to a level
surface.
Low hydraulic system pressure.
Stow the machine and do not operate
until repairs are made.
All outriggers are not fully raised.
Fully raise all four outriggers.
Wheels will not turn when
winching.
Brakes are not released.
Hold the brake release knob outward
while winching the machine.
Hydraulic fluid temperature
200°F (93°C) or more.
Prolonged operation or driving.
Stop operation until fluid cools.
High pressure fluid return to reservoir caused by kinked or twisted
hose.
Remove the kink or twist from the
hose. Let fluid cool before operating.
Hydraulic system component failure.
Stow the machine and do not operate
until repairs are made.
Failure of hose, tube, fitting, seal,
etc.
Do not operate machine until repairs
are made.
Severe hydraulic leak.
44
S2770RT IS – 0102094
Appendix A – Glossary
aerial platform – a mobile device that has an adjustable position platform,
supported from ground level by a structure.
ambient temperature – the air temperature of the immediate environment.
authorized personnel – personnel approved as assigned to perform specific
duties at a specific location.
base – the relevant contact points of the aerial platform that form the stability
support (e.g. wheels, casters, outriggers, stabilizers).
center of gravity – the point in the aerial platform around which its weight
is evenly balanced.
chassis – the integral part of the aerial platform that provides mobility and
support for the booms.
elevating assembly – the assembly located between the chassis and the
platform which is used to raise and lower the platform.
personal fall arrest system – a fall protection system that is used while
working on an unprotected edge (such as a roof top with no guardrail). This
system includes a harness, lanyard or other connecting device, a fall arrestor,
an energy absorber or decelerator, an anchorage connector, and a secure
anchorage such as a building beam, girders or columns. An aerial platform
is not a fall arrest anchorage.
platform – the portion of an aerial platform intended to be occupied by
personnel with their tools and materials.
platform height – the vertical distance measured from the floor of the platform to the surface upon which the chassis is being supported.
prestart inspection – a required safety inspection routine that is performed
daily before operating the aerial platform.
qualified person – a person, who by reason of knowledge, experience,
or training is familiar with the operation to be performed and the hazards
involved.
fall restraint – a system that is used while working on a boom lift within
the boundaries of platform guardrails to provide restraint from being projected
upward from the platform. This system includes a harness or belt, lanyard,
and a lanyard anchor. Although federal regulations, OSHA, ANSI, and Snorkel do not require the use of additional fall protection beyond the platform
guardrails on scissor lift aerial platforms, local, state, or employer rules may
require their use.
rated work load – the designed carrying capacity of the aerial platform as
specified by the manufacturer.
floor or ground pressure – the maximum pressure, expressed in pounds
per square inch, a single wheel concentrates on the floor or ground.
gradeability – the maximum slope that the aerial platform is capable of travel.
turning radius – the radius of the circle created by the wheel during a 360°
turn with the steering wheels turned to maximum. Inside turning radius is the
wheel closest to the center and outside turning radius is the wheel farthest
from the center.
guardrail system – a vertical barrier around the platform to prevent personnel from falling.
unrestricted rated work load – the maximum designed carrying capacity of
the aerial platform allowed by the manufacturer in all operating configurations.
hazardous location – any location that contains, or has the potential to contain, an explosive or flammable atmosphere as defined by ANSI/NFPA 505.
upper controls – the controls located on or beside the platform used for
operating some or all of the functions of the aerial platform.
level sensor – a device that detects a preset degree of variation from perfect
level. The level sensor is used to sound an alarm if operating on a slope
greater than the preset value.
wheelbase – the distance from the center of the rear wheel to the center
of the front wheel.
lower controls – the controls located at ground level for operating some or
all of the functions of the aerial platform.
manufacturer – a person or entity who makes, builds or produces an
aerial platform.
safety prop – a bar that when properly positioned mechanically prevents
the platform from lowering.
stow – to place a component, such as the platform, in its rest position.
working envelope – the area defined by the horizontal and vertical limits
of travel that the platform may be positioned in.
working height – platform height plus six feet.
maximum travel height – the maximum platform height or the most adverse
configuration(s) with respect to stability in which travel is permitted by the
manufacturer.
maximum wheel load – the load or weight that can be transmitted through
a single wheel to the floor or ground.
Minimum Safe Approach Distance – the minimum safe distance that
electrical conductors may be approached when using the aerial platform.
Also called M.S.A.D.
operation – the performance of any aerial platform functions within the scope
of its specifications and in accordance with the manufacturer’s instructions,
the users work rules, and all applicable governmental regulations.
operator – a qualified person who controls the movement of an aerial
platform.
outrigger – a mechanical tip-over prevention structure consisting of a
hydraulically extended leg used to make ground contact to aid in stabilizing
the machine.
S2770RT IS – 0102094
Snorkel Product Warranty Policy
1. Snorkel warrants, its authorized sales and service centers (herein referred to as “SSC”), each new machine manufactured and sold by it to be free from defects in material and workmanship for a period of two (2) years from date
of delivery to any customer. The warranty will apply subject to the machine being operated in accordance with the
rules, precautions, instructions and maintenance requirements outlined in the relevant Snorkel Operator and Parts/
Service manuals. Snorkel further warrants the structural components, specifically the mainframe chassis, turntable,
booms and/or scissor arms of each new machine manufactured by it to be free from defects in material and workmanship for an additional period of three (3) years. Any such part or parts which, upon examination by the Snorkel
Warranty Department or appointed representative, are found to be defective will be replaced or repaired by Snorkel
through local authorized Dealers. The structural warranty specifically excludes adverse effects on the machine
structure arising from damage, abuse or misuse of the equipment.
2. Machines may be held in an authorized Distributor/ SSC’s stock for a maximum period of six (6) months from the
date of shipment from Snorkel, before the warranty period is automatically initiated on each machine.
3. It is the responsibility of the Distributor/SSC to complete and return to Snorkel a Pre-delivery Inspection Record,
Warranty Registration Form, before the act of rental / loan / demonstration of the machine or delivery to an end user.
In the case of direct sale to end customers the same responsibility lies with the end customer.
4. Any end customer, SSC, distributor or dealer shall not be entitled to the benefits of this warranty and Snorkel shall
have no obligations here under unless the “Pre-Delivery and Inspection Record” has been properly completed and
returned to the Snorkel Warranty department within fifteen (15) days after delivery of the Snorkel product to the
Customer or Dealer’s demonstration / rental fleet. Snorkel must be notified, in writing, within ten (10) days, of any
machine sold to a Customer from a Dealer/SSC’s rental fleet during the warranty period.
5. Any part or parts which upon examination by the Snorkel Product Support Department are found to be defective
within the specified warranty period, will be replaced or repaired at the sole discretion of Snorkel through its local
Authorized Distributor/SSC, at no charge. Any parts replaced under warranty must be original Snorkel parts obtained through an authorized Snorkel Distributor/SSC unless expressly agreed otherwise in writing and in advance
by Snorkel’s warranty department.
6. All parts claimed under warranty must be held available for return and inspection upon request for a period of 90
days from date of claim submission, it is necessary that all parts are individually tagged or marked with their part
number and the warranty claim number. All parts returning should be still in a factory state, free of any alteration to
the original design. If the parts are subject to repair it will need to be pre authorized by the Snorkel Product Support Group and or Warranty Department prior to the repair being completed. After 90 days all parts replaced under
warranty which have not been returned, to Snorkel should be destroyed. Failure to produce parts requested by the
Warranty Administrator for inspection within a period of 14 days will result in the claim being automatically rejected
in full. Materials returned for warranty inspection must have the following procedure:
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Carefully packaged to prevent additional damage during shipping
Drained of all contents and all open ports capped or plugged
Shipped in a container tagged or marked with the RMA number
Shipped PREPAID (ground service only). Any item(s) returned for warranty by any other means
may be refused and returned, unless prior approval is agreed with Snorkel.
Snorkel Warranty Statement
Effective 1/1/2017
Snorkel Product Warranty Policy
7. At the direction of the Snorkel Warranty department, any component part(s) of Snorkel products to be replaced
or repaired under this warranty program must be returned freight prepaid for inspection. An RMA (Returns
material authorization) must be requested from Snorkel Warranty department, a copy to be placed with the
returning component part(s).
8. All warranty replacement parts will be shipped freight prepaid (standard charges, ground shipping only) from
the Snorkel Parts department, Service Department or from the Vendor to Dealer/SSC or Customer. Any other
shipping method is the customer responsibility.
9. All warranty claims are subject to approval by Snorkel Service department. Snorkel reserves the right to limit or
adjust claims with regard to defective parts, labor or travel time based on usual and customary guidelines.
10. Reimbursement policy, labor will be paid at 75% of posted hourly shop rate. Travel time will be paid at $50 per
hour up to a maximum of 3 hours. Snorkel will pay 1 hour of troubleshooting time per warranty claim, unless
expressly agreed otherwise in writing and in advance by Snorkel’s Warranty Department. An annual rate
declaration must to be supplied to the Snorkel Warranty administrator by January 31st and will be used as the
reimbursable rate for that calendar year.
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REPLACEMENT PARTS WARRANTY
Any part replaced under this limited warranty is not subject to further warranty cover beyond the normal
warranty period of the machine upon which the part was installed.
Any replacement parts sold (not delivered under a warranty claim) will be subject to a warranty period of
(6) six months from the date of invoice.
Parts held by an authorized Distributor/SSC are covered under warranty for a period of (12) twelve months
from the date of invoice, provided that those parts have been subject to appropriate storage to prevent
damage and deterioration (conditional on Snorkel review).
CLAIM PROCEDURE
The Snorkel Warranty department must be notified within forty-eight hours (48) of any possible warranty situation
during the applicable warranty period. Personnel performing major warranty repair or parts replacement must obtain specific approval by the Snorkel Warranty department prior to performing the warranty repair or replacement.
When a Distributor/SSC/Customer perceive a warranty issue to exist the following steps must be adhered to:
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Customer/SSC/Distributor to place a purchase order for genuine Snorkel replacement parts.
Snorkel to dispatch parts via the requested method (in line with the required response time).
Confirmation that a qualified technician is available to replace the part and that this person has been accepted by Snorkel to carry out such work under the warranty of the machine. Failure to do this may nullify
the warranty.
Customer/SSC/Distributor to allocate a warranty claim number to the repair.
All correspondence in respect of the claim to be on an official Snorkel warranty claim form as supplied by
Snorkel’s warranty department.
All warranty claims must be submitted within 30 days of the date of the machine repair.
FREIGHT DAMAGE
If a machine is received in a damaged condition, then the damage must be noted on the bill of lading and/
or delivery documents and photographs must be taken at the point of delivery, prior to signing acceptance
of the consignment.
The freight company and Snorkel must be contacted by the Distributor and a damage claim registered by
either party immediately.
The above requirements apply only to freight damage associated with equipment supplied by Snorkel
transport. Customer freight issues are excluded from this warranty policy.
Snorkel Warranty Statement
Effective 1/1/2017
Snorkel Product Warranty Policy
THIS PRODUCT WARRANTY POLICY SPECIFICALLY EXCLUDES:
1. Engines, motors, tires and batteries are manufactured by specialist suppliers to Snorkel, who furnish their own
warranty policies. Snorkel will, however, to the extent permitted pass through any such warranty protection to
the Distributor/SSC/Customer.
2. Any Snorkel product which has been modified or altered outside Snorkel factories without written approval, if
such modification or alteration, in the sole judgment of Snorkel Engineering and/or Service Departments, adversely affects the stability, reliability or service life of the Snorkel product or any component thereof.
3. Any Snorkel product which has been subject to misuse and abuse, improper maintenance or accident. “Misuse”
includes but is not limited to operation beyond the factory-rated load capacity and speeds. “Improper maintenance” includes but is not limited to failure to follow the recommendations contained in the Snorkel Operation,
Maintenance, and repair Parts Manuals.
4. Normal wear of any Snorkel component part(s). Normal wear of component parts may vary with the type,
application or type of environment in which the machine may be used; such as, but not limited to sandblasting
applications.
5. Routine maintenance, routine maintenance items and minor adjustments are not covered by this warranty,
including but not limited to hydraulic fluid, filters and lubrication, paint and decals, engine tune-up, brake adjustments etc. Snorkel will not cover leaks from fittings, hoses and any other connection points after the unit has
been in service for 90 days or 150 hours of operation which ever comes first.
6. Any Snorkel product that has come into direct contact with any chemical or abrasive material.
7. Incidental or consequential expenses, losses, or damages related to any part or equipment failure, including
but not limited to freight cost to transport the machine to a repair facility, downtime of the machine, lost time for
workers, lost orders, lost rental revenue, lost profits, expenses or increased cost. This warranty is expressly in
lieu of all other warranties, representations or liabilities of Snorkel, either expressed or implied, unless otherwise
amended in writing by Snorkel.
8. Snorkel warranty policy does not cover any duties, taxes, environmental fees including without limitation, disposal or handling of tires, batteries and petrochemical items.
9. Items specifically excluded are: fuel injectors, motor brushes, glow plugs, contactor tips and springs, filters,
lamp bulbs, lamp lenses, coolants, lubricants, brake pads and cleaning materials.
10. Failure of replacement parts due to fault misdiagnosis or incorrect fitting by the Distributor/SSC/Customer.
SNORKEL MAKES NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION OF THIS LIMITED WARRANTY.
SNORKEL MAKES NO IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
AND DISCLAIMS ALL LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING BUT NOT LIMITED
TO INJURY TO PERSONS OR PROPERTY.
Snorkel Warranty Statement
Effective 1/1/2017
Snorkel Product Warranty Policy
Wherever possible the end customer shall obtain all warranty support and make all warranty claims through the local Snorkel authorized Distributor/SSC/Dealer. Warranty support should be from the Distributor/SSC/Dealer from whom the Snorkel
product was purchased. Where Snorkel equipment is supplied directly from the factory the end customer, or if unable to
contact the Distributor/SSC/Dealer, may contact the Snorkel Warranty Department for further assistance.
APPEAL
The buyer may appeal in writing against a rejected or adjusted claim to Snorkel warranty department within a period
of 21 days of receiving the rejection or adjustment notice. The appeal should be grounded on express reasons and
supported by relevant evidence. Appeals received outside of this time limit will not be considered.
SNORKEL WARRANTY SCHEDULE
Limited Warranty Periods
Item
Warranty Period
New machine materials and workmanship
2 year parts replacement
Structural components (Chassis, Turntable, Booms,
Scissors)
5 years parts replacement or repair
Parts held in a Distributor’s stock
12 months from date of invoice, subject to
adequate storage/protection
Parts sold (non warranty)
6 months from date of invoice
Batteries supplied on new machines
6 months from warranty registration date
Other specifically excluded parts:
Fuel injectors
Motor brushes
Glow plugs
Contactor tips and springs
Oils
Filters
Lamp bulbs
Lamp lenses
Coolants
Lubricants
Cleaning materials
All consumable/wear parts
Snorkel Warranty Statement
Not covered by Warranty
Effective 1/1/2017
Local Distributor / Lokaler Vertiebshändler / Distributeur local
El Distribuidor local / ll Distributore locale
EUROPE, MIDDLE EAST
AFRICA & ASIA
PHONE: +44 (0) 845 1550 058
FAX: +44 (0) 845 1557 756
NORTH & SOUTH AMERICA
PHONE: +1 785 989 3000
TOLL FREE: +1 800 255 0317
FAX: +1 785 989 3070
AUSTRALIA
PHONE: +61 1300 700 450
FAX: +61 2 9609 3057
NEW ZEALAND
PHONE: +64 6 3689 168
FAX: +64 6 3689 164
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