The aerial platform is not electrically insulated. Death or serious injury will result from contact with, or inadequate clearance from, an energized conductor.
Do not go closer than the minimum safe approach distance as defined by the Minimum Safe
Approach Distance section in Chapter 3 – Safety.
Regard all conductors as energized.
Allow for electrical wire sag and aerial platform sway.
If the platform, booms, or any part of the aerial platform contacts a high-voltage electrical conductor,
the entire machine can become electrically charged.
If that happens, remain on the machine and do not contact any other structure or object. This includes the ground, adjacent buildings, poles, and any other objects that are not part of the aerial
platform.
Such contact could make your body a conductor to the other object, creating an electrical shock
hazard resulting in death or serious injury.
If an aerial platform is in contact with an energized conductor the platform operator must warn
ground personnel in the vicinity to stay away. Their bodies can conduct electricity creating an electrical shock hazard resulting in death or serious injury.
Do not approach or leave the aerial platform until the electricity has been turned off.
Do not attempt to operate the lower controls when the platform, booms, or any part of the aerial
platform is in contact with a high-voltage electrical conductor or if there is an immediate danger of
such contact.
Personnel on or near an aerial platform must be continuously aware of electrical hazards, recognizing that death or serious injury can result from contact with an energized conductor.
Page 3
Table of Contents
Chapter 1 – Introduction
Aerial Platform Features ........................................... 1
The aerial platform is a boom-supported elevating work
platform used to raise personnel, their tools, and material to the workstation. The booms are raised and lowered with hydraulic cylinders. Hydraulic motors on the
drive wheels provide power to move the aerial platform.
The standard machine includes the following features.
• Proportional boom lift, swing, and drive control
• 180 degree hydraulic platform rotation
• Two safety lanyard attachments
• Manual lowering valve at chassis
• Hydraulic oil level and temperature gauges
• Lifting lugs
• Tie-down lugs
• Horn
• 3.5 degree tilt alarm
• Electronic ignition
• Hour meter
• Ammeter
• Coolant temperature gauge
• High engine temperature shut down
• Low oil pressure shut down
• Foam filled tires
• Battery operated emergency power system
• 360 degree continuous turntable rotation
• 76 cm x 152 cm (30″ x 60″) steel
227 kg (500 lb) capacity platform
• Platform gravity gate
• Platform overload sensing system
• Five year limited warranty
Operator’s Manual
This manual provides information for safe and proper
operation of the aerial platform. Read and understand
the information in this Operator’s Manual before operating the aerial platform on the job.
Additional copies of this manual may be ordered from
Snorkel. Supply the model and manual part number from
the front cover to assure that the correct manual will be
supplied.
All information in this manual is based on the latest product information at the time of publication. Snorkel reserves the right to make product changes at any time
without obligation.
Safety Alerts
A safety alert symbol is used throughout this manual to
indicate danger, warning, and caution instructions. Follow these instructions to reduce the likelihood of personal injury and property damage. The terms danger,
warning, and caution indicate varying degrees of personal injury or property damage that can result if the
instruction is not followed.
ADanger
Indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
This signal word is to be used in the most extreme
situations.
The machine is powered with a Cummins B3.3 diesel
engine.
The aerial platform has been manufactured to conform
to European Directive 98/37/EC and European Standard
EN280.
Options
The following options may be provided on the machine.
• Platform control cover
• Platform work lights – flood lights
• Flashing light – red or amber
• Platform swinging gate
• Sandblast protection kit
• Driving lights – two headlights and two rear lights
• Cold weather start kit Cummins – block heater
• Hydraulic system cold weather warm-up kit
• AC generator – hydraulic powered, 220 VAC
• Drive motion alarm
• Airline to platform
• Tow kit
• 76 cm x 243 cm (30″ x 96″) aluminum
227 kg (500 lb) capacity platform
• 76 cm x 152 cm (30″ x 60″) aluminum
227 kg (500 lb) capacity platform
AWarning
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
ACaution
Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
It may also be used to alert against unsafe practices.
Notes
Notes are used to provide special information or helpful
hints to assist in aerial platform operation, but do not
indicate a hazardous situation.
Operation
The aerial platform has built-in safety features and has
been factory tested for compliance with Snorkel specifications and industry standards. However, any personnel lifting aerial platform can be potentially dangerous
in the hands of untrained or careless operators.
AWarning
The potential for an accident increases when the
aerial platform is operated by personnel who are not
trained and authorized. Death or serious injury can
result from such accidents. Read and understand
AB60J – 0182099EE1
Page 6
Chapter 1 – Introduction
the information in this manual and on the placards
and decals on the machine before operating the
aerial platform on the job.
Training is essential and must be performed by a qualified person. Become proficient in knowledge and actual
operation before using the aerial platform on the job.
You must be trained and authorized to perform any functions of the aerial platform. Operation of the aerial platform must be within the scope of the machine specifications.
The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regulations
and safety rules of their employer and/or any state or
federal law.
Maintenance
Every person who maintains, inspects, tests, or repairs
the aerial platform must be qualified to do so. Following
the daily prestart inspection in this Operator’s Manual
will help keep the aerial platform in optimum working
condition. Other maintenance functions must be performed by maintenance personnel who are qualified to
work on the aerial platform.
ACaution
Welding current can be very intense. Damage to electronic components can result. Connect the ground
clamp as close as possible to the area being welded.
Disconnect battery cables and any microprocessors
and engine control modules before welding on the
machine.
If it becomes necessary to weld aerial platform components as a method of repair, take all precautions to prevent damage to electronic circuitry and devices on the
machine. This includes, but may not be limited to, disconnecting battery cables and electronic devices.
Do not modify this aerial platform without prior written
consent of the Snorkel Engineering Department. Modification may void the warranty, adversely affect stability, or affect the operational characteristics of the aerial
platform.
Owner and User Responsibilities
All owners and users of the aerial platform must read,
understand, and comply with all applicable regulations.
Ultimate compliance to national safety regulations is the
responsibility of the user and their employer.
Additional Information
For additional information contact your local dealer or
Snorkel at:
Snorkel International
P.O. Box 1160
St. Joseph, MO 64502-1160 USA
785-989-3000
http://www.snorkelusa.com
2AB60J – 0182099EE
Page 7
Component Identification
Chapter 2 – Specifications
Upper Controls
Floating
Turret
Lower Controls
Emergency Lowering Valve
Right Side
Battery Disconnect Switch
Battery
Hydraulic Fluid Filter
Engine
Main Boom
Fuel Tank
Chassis
Tip Boom
Hydraulic Fluid Tank
Emergency
Lowering
Valve
Steer Wheels
Platform
Operator’s Manual
Jib Boom
Riser
Boom
Steer Wheels
Platform
Foot Switch
Left Side
AB60J – 0182099EE3
Page 8
Chapter 2 – Specifications
Working Envelope
Meters
(Feet)
19.8
(65)
18.4
(60)
16.8
(55)
15.2
(50)
13.7
(45)
12.2
(40)
10.7
(35)
9.1
(30)
7.6
(25)
6.1
(20)
4.6
(15)
3.0
(10)
1.5
(5)
0
1.5
(5)
3.0
(10)
4AB60J – 0182099EE
1.5
(5)
0
1.5
(5)
3.0
(10)
4.6
(15)
6.1
(20)
7.6
(25)
9.1
(30)
10.7
(35)
12.2
(40)
13.7
(45)
Page 9
General Specifications
Chapter 2 – Specifications
Aerial Platform
Working height20.11 m (66′)
Maximum platform height18.29 m (60′)
Horizontal reach13.1 m (43′ 1″)
Main boom elevation-1° to +75°
Turntable rotation360° continuous
Turning radius, inside
Two wheel drive2.45 m (8′)
Four wheel drive5.24 m (17′ 21/2″)
Wheelbase2.4 m (8′)
Ground clearance30 cm (1′)
Tailswing
Stowed1.54 m (5′)
Working0 m (0′)
Maximum wheel load5,670 kg (12,500 lbs)
Maximum ground pressure5.76 kg/cm² (82 psi)
Weight, EVW approximate11,249 kg (24,800 lbs)
Stowed width2.4 m (7′ 111/2″)
Stowed length8.9 m (29′ 2″)
Stowed height2.5 m (8′ 3″)
Platform
Dimensions
Standard steel76 cm x 152 cm (30″ x 60″)
Rated work load227 kg (500 lb)
Optional aluminum76 cm x 152 cm (30″ x 60″)
Rated work load227 kg (500 lb)
Optional aluminum76 cm x 243 cm (30″ x 96″)
Rated work load227 kg (500 lb)
Rotation90° CW to 90° CCW
Maximum number of occupants2 people
Optional AC generator220 VAC
Function Speed
Turntable rotation, 360 degrees123 to 125 seconds
Main boom
Up47 to 52 seconds
Down47 to 52 seconds
Extend30 to 38 seconds
Retract30 to 38 seconds
Riser boom
Up24 to 30 seconds
Down16 to 20 seconds
Jib boom
Up9 to 12 seconds
Down7 to 11 seconds
Platform rotation, 180 degrees16 to 20 seconds
Drive
4x4 and 4x2
High, booms stowed5.1 km/h (3.2 mph)
Mid, booms stowed2.9 km/h (1.8 mph)
4x4
Low, booms down/retracted1.6 km/h (1 mph)
Low, booms up/retracted1 km/h (0.6 mph)
4x2
Low, booms down/retracted1.1 km/h (0.7 mph)
Low, booms up/retracted1.1 km/h (0.7 mph)
Voltage12 V DC negative chassis ground
SourceOne - 12 V 550 CCA battery
Fluid recommendeddistilled water
Hydraulic System
Maximum pressure20,700 kPa (3,000 psi)
Reservoir capacity94.6 l (25 US gal)
System capacity132.5 l (35 US gal)
Maximum operating temperature93°C (200°F)
Hydraulic fluid recommended
Above -13°C (10°F)Mobil DTE-13M
(ISO VG32)
Below -13°C (10°F)Mobil DTE-11M
(ISO VG15)
Engine
DieselCummins B3.3
Fuel Tank Capacity
Diesel151.4 l (40 US gal)
Ambient Air Temperature Operating Range
Celsius-18°C to 43°C
Fahrenheit0°F to 110°F
Maximum Wind Speed
Gust or steady45 km/h (28 mph)
Vibration less than 2.5 m/sec
Sound Threshold below 97 dB(A)
AB60J – 0182099EE5
2
Page 10
Chapter 2 – Specifications
Engine Specifications
Engine
Cummins
B3.3
Diesel
Note 1: Refer to the engine manufacturers manual for specific fuel recommendations and specifications.
Note 2: Ethylene glycol or Propylene glycol may be used. Refer to the Cummins® Operation and Maintenance Manual B3.3 Series Engines
Note 3: Refer to the engine manufacturers manual for specific lubricating oil recommendations and specifications.
DisplacementFuel GradeCoolant
ASTM No. 2D fuel with a
3.26 liter
(199 cu. in.)
for specific coolant recommendations and specifications.
minimum Cetane number of
1
40.
For operating tempera-
tures below 0°C (32°F) use
winterized No. 2D.
50% water
50% Antifreeze
Temperature
60°C to 100°C
2
140°F to 212°F
Operating
Oil
Capacity
7.5 liter (2 gal)
total
1.5 liter (1.6 qt)
Low to High
Oil
Grade
SAE
15W-40
API:
CH4/SG
Engine Oil Viscosity
Cummins B3.3
3
6AB60J – 0182099EE
Page 11
Chapter 3 – Safety
Knowledge of the information in this manual, and proper
training, provide a basis for safely operating the aerial
platform. Know the location of all controls and how they
operate to act quickly and responsibly in an emergency.
Safety devices reduce the likelihood of an accident.
Never disable, modify, or ignore any safety device.
Safety alerts in this manual indicate situations where
accidents may occur.
If any malfunction, hazard or potentially unsafe condition relating to capacity, intended use, or safe operation
is suspected, stop aerial platform operation and seek
assistance.
The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regulations
and safety rules of their employer and/or any state or
federal law.
Electrocution Hazards
The aerial platform is made of metal components and is
not insulated. Regard all conductors as energized. Do
not operate outside during a thunderstorm.
Minimum Safe Approach Distance
Minimum safe approach distances to energized power
lines and their associated parts must be observed while
operating the aerial platform.
ADanger
The aerial platform is not electrically insulated.
Death or serious injury will result from contact with,
or inadequate clearance from, an energized conductor. Do not go closer than the minimum safe approach distance as defined by ANSI.
ANSI publications define minimum distances that must
be observed when working near bus bars and energized power lines. Table 1 and Figure 3 are reprinted
courtesy of Scaffold Industry Association, ANSI/SIA
A92.5
Voltage Range
(Phase to Phase)
0 to 300V
Over 300V to 50kV
Over 50kV to 200kV
Over 200kV to 350kV
Over 350kV to 500kV
Over 500kV to 750kV
Over 750kV to 1000kV
Minimum Safe Approach Distance
FeetMeters
Avoid Contact
10
15
20
25
35
45
3.05
4.60
6.10
7.62
10.67
13.72
Table 1 – Minimum Safe Approach Distance
Figure 3 – Minimum Safe Approach Distance
AB60J – 0182099EE7
Page 12
Chapter 3 – Safety
Prestart Inspection
Perform a prestart inspection before each shift as described in Chapter 7. Do not use the aerial platform on
the job unless you are trained and authorized to do so.
Work Place Inspection and Practices
Do not use the aerial platform as a ground connection
when welding. The welding ground clamp must be attached to the same structure that is being welded. Electrical current flow can be very intense, causing serious
internal damage to some components.
Inspect the area before and during aerial platform use.
The following are some potential hazards that may be
in the work place.
• Debris
• Slopes
• Drop-offs or holes
• Bumps and floor obstructions
• Overhead obstructions
• Unauthorized persons
• High voltage conductors
• Wind and weather conditions
• Inadequate surface and support to withstand load
forces applied by the aerial platform in all operating
configurations
Before using the aerial platform in any hazardous (classified) location, make certain it is approved and of the
type required for use in that particular location.
Know and understand the job site traffic-flow patterns
and obey the flagmen, road signs, and signals.
While operating the aerial platform, a good safety practice is to have qualified personnel in the immediate work
area to:
• Help in case of an emergency.
• Operate emergency controls as required.
• Watch for loss of control by platform operator.
• Warn the operator of any obstructions or hazards
that may not be obvious to them.
• Watch for soft terrain, sloping surfaces, drop-offs,
etc. where stability could be jeopardized.
• Watch for bystanders and never allow anyone to be
under, or to reach through the booms while operating the aerial platform.
ADanger
Pinch points may exist between moving components. Death or serious injury will result from becoming trapped between components, buildings,
structures, or other obstacles. Make sure there is
sufficient clearance around the machine before
moving the chassis, booms, or platform. Allow sufficient room and time to stop movement to avoid
contact with structures or other hazards.
Always look in the direction of movement. Drive with
care and at speeds compatible with the work place conditions. Use caution when driving over rough ground,
on slopes, and when turning. Do not engage in any form
of horseplay or permit riders any place other than in the
platform.
Secure all accessories, containers, tools, and other materials in the platform to prevent them from accidentally
falling or being kicked off the platform. Remove all objects that do not belong in or on the aerial platform.
Never steady the platform by positioning it against another platform.
Do not operate the aerial platform if it is damaged or not
functioning properly. Qualified maintenance personnel
must correct the problem before putting the aerial platform back into service.
Operation
Use three points of support when entering or exiting the
platform. For example, use two hands and one foot when
climbing into the platform.
Never cover the platform floor grating or otherwise obstruct your view below. Make sure the area below the
platform is free of personnel before lowering.
Keep both feet positioned firmly on the platform floor.
Operate the controls slowly and deliberately to avoid
jerky and erratic operation. Always stop the controls in
neutral before going in the opposite direction.
Do not dismount while the aerial platform is in motion or
jump off the platform.
Properly stow the aerial platform and secure it against
unauthorized operation at the end of each work day,
before transporting, or if it is left unattended.
Tip-Over and Falling Hazards
Operate the aerial platform only on a firm, flat, level surface capable of withstanding all load forces imposed by
the aerial platform in all operating conditions. Refer to
the General Specifications chart for the maximum wheel
load and ground pressure. Raise the booms only when
the aerial platform is on level ground.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover accident. Do not drive or position the aerial platform for elevated use near any drop-off, hole, slope,
soft or uneven ground, or other tip-over hazard. Do
not raise the boom in winds above 45 km/h (28 mph).
All platform occupants must wear a fall restraint device
connected to a lanyard anchor point.
8AB60J – 0182099EE
Page 13
Chapter 3 – Safety
It is best not to transfer from the platform to another
structure or from the structure to the platform, unless
that is the safest way to do the job. Judge each situation
separately taking the work environment into account. If
it is necessary to transfer from the platform to another
structure the following guidelines apply:
1. Where possible, place the platform over a roof or
walking structure to do the transfer.
2. Transfer your anchorage from one structure to the
other before stepping across.
3. Remember that you might be transferring to a structure where personal fall arrest is required.
4. Use the platform entrance, do not climb over or
through the guardrails.
Do not operate the aerial platform in windy or gusty conditions. Do not add anything to the aerial platform that
will increase the wind loading such as billboards, banners, flags, etc.
Never operate the aerial platform without all parts of the
guardrail system in place and the gate closed. Make
sure that all protective guards, cowlings, and doors are
securely fastened.
Do not exceed the platform capacity as indicated on the
platform rating placard on the platform. Do not carry loads
that extend beyond the platform guardrails without prior
written consent from Snorkel.
Do not operate the aerial platform from trucks, trailers,
railway cars, floating vessels, scaffolds, or similar equipment unless the application is approved in writing by
Snorkel.
Do not operate any of the aerial platform functions while
the battery charger is plugged in.
AWarning
Batteries give off hydrogen and oxygen that can
combine explosively. Death or serious injury could
result from a chemical explosion. Do not smoke or
permit open flames or sparks when checking the
batteries.
Battery acid can damage the skin and eyes. Serious
infection or reaction can result if medical treatment
is not given immediately. Wear face and eye protection when working near the batteries.
Batteries contain sulfuric acid that can damage your eyes
or skin on contact. Wear a face shield, rubber gloves,
and protective clothing when working around batteries.
If acid contacts your eyes, flush immediately with clear
water and get medical attention. If acid contacts your
skin, wash off immediately with clear water.
Hydraulic System
The hydraulic system contains hoses with hydraulic fluid
under pressure.
ADanger
Hydraulic fluid escaping under pressure can have
enough force to inject fluid into the flesh. Serious
infection or reaction will result if medical treatment
is not given immediately. In case of injury by escaping hydraulic fluid, seek medical attention at once.
Do not place your hand or any part of your body in front
of escaping hydraulic fluid. Use a piece of cardboard or
wood to search for hydraulic leaks.
Do not use the aerial platform as a crane, hoist, jack, or
for any purpose other than to position personnel, tools,
and materials.
Do not climb on the guardrails or use ladders, planks, or
other devices to extend or increase the work position
from the platform.
Take care to prevent rope, electrical cords, and hoses,
etc., from becoming caught in or on the aerial platform.
If the platform or booms becomes caught on an adjacent structure or other obstacle and is prevented from
normal motion, reverse the control to free the platform.
If control reversal does not free the platform, evacuate
the platform before attempting to free it.
Electrical System
Charge the battery in a well-ventilated area free of flame,
sparks, or other hazards that might cause fire or explosion.
AB60J – 0182099EE9
Engine and Fuel Handling Precautions
Refer to the engine manufacturer’s Operator’s Manual
for complete information on safe engine operation, maintenance, and specifications.
ADanger
Engine exhaust contains carbon monoxide, a poisonous gas that is invisible and odorless. Breathing engine exhaust fumes will cause death or serious illness. Do not run the engine in an enclosed
area or indoors without adequate ventilation.
Be careful not to run the diesel fuel tank empty. Bleed
the fuel system if air enters the lines between the tank
and the injection pump.
Allow the engine to return to idle before shutting the engine off.
Do not smoke or permit open flames while fueling or
near fueling operations.
Page 14
Chapter 3 – Safety
Never remove the fuel cap or fill the fuel tank while the
engine is running or hot. Never allow fuel to spill on hot
machine components.
Maintain control of the fuel filler nozzle when filling the
tank. Spilled fuel is a potential fire hazard.
Do not overfill the fuel tank. Allow room for expansion.
Clean up spilled fuel immediately.
Tighten the fuel tank cap securely. If the fuel cap is lost,
replace it with an approved cap from Snorkel. Use of a
non-approved cap without proper venting may result in
pressurization of the tank.
Never use fuel for cleaning purposes.
For diesel engines, use the correct fuel grade for the
operating season.
ACaution
Engine coolant escaping under pressure can cause
serious burns. Shut the engine off and let it cool
before removing the radiator cap.
Let the engine and radiator cool before adding coolant.
Placards and Decals
The aerial platform is equipped with placards and decals that provide instruction for operation and accident
prevention. Do not operate the aerial platform if any placards or decals are missing or not legible.
10AB60J – 0182099EE
Page 15
Chapter 4 – Safety Devices
This aerial work platform is manufactured with safety
devices, placards, and decals to reduce the likelihood
of an accident. For the safety of all personnel, do not
disable, modify, or ignore any safety device. Safety devices are included in the daily prestart inspection.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable, or override any safety device.
If any safety devices are defective, remove the aerial
platform from service until qualified maintenance personnel can make repairs.
Emergency Stop Controls
There is an emergency stop control at the lower and
upper controls.
At the lower controls, the emergency stop is a two-position push button (refer to Figure 4.1). Push the emergency stop button in to disconnect power to all control
circuits. Pull the button out to restore power.
At the upper controls, the emergency stop is a two-position push button (refer to Figure 4.2). Push the emergency stop button in to disconnect power to the upper
control circuits. Pull the button out to restore power.
Emergency
Stop Button
Figure 4.2 – Upper Controls
Engine/Emergency
Power Switch
Emergency Power System
The emergency power system includes a back-up pump,
motor, and battery. Use this system to operate the boom
and turntable functions to lower the platform if the main
power system fails due to engine or pump failure. Hold
the engine/emergency power switch (refer to Figure 4.1
and 4.2) down to activate the emergency power system.
Engine/Emergency
Power Switch
Emergency
Stop Button
Ground Operation
Switch
Figure 4.1 – Lower Controls
Note
The lower controls override the upper controls. If the
upper control emergency stop button is engaged, the
lower controls can still be used to operate the aerial platform.
The length of time the pump can be operated depends
on the capacity of the battery.
Emergency Lowering Knobs
The emergency lowering knobs may be used to lower
the booms if the engine will not start and the emergency
power system will not work. There is a knob to lower the
riser boom and one to lower the main boom. The riser
boom knob (refer to Figure 4.3) is inside the rear of the
turntable.
Emergency
Lowering Knob
Inside Turntable
Figure 4.3 – Riser Boom Emergency
Lowering Knob
AB60J – 0182099EE11
Page 16
Chapter 4 – Safety Devices
The main boom knob (refer to Figure 4.4) is behind the
floating turret.
Emergency
Lowering Knob
Figure 4.4 – Main Boom Emergency
Lowering Knob
Ground Operation Switch
The ground operation switch (refer to Figure 4.1) prevents boom and platform movement if a control switch
on the lower control panel is accidentally moved.
Hold the switch up to operate the machine from the lower
controls.
Platform Foot Switch
Stepping down on the platform foot switch (refer to Figure 4.5) activates the upper controls.
A gravity gate (refer to Figure 4.5) or an optional swinging gate (refer to Figure 4.6) allows for access to the
platform.
Swinging
Gate
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
Two lanyard anchors for fall restraint anchorage are provided below the upper controls at the front of the platform (refer to Figure 4.4).
Note
The lanyard anchors are not for lifting or tying the machine down.
Top Rail
Lanyard
Anchors
Platform Foot
Switch
Gravity
Gate
Mid Rail
Toeboard
Figure 4.5 – Platform
The foot switch must be engaged and a control must be
moved to operate the boom, drive, and/or platform from
the upper controls.
Guardrails
The guardrail system includes a top rail, mid rail, and
toeboards around the sides of the platform (refer to Figure 4.5).
All personnel in the platform must connect their fall restraint device to a lanyard anchor before raising the platform. Do not use the aerial platform for personal fall ar-rest anchorage.
Tilt Alarm
If the aerial platform chassis is out of level more than
3.5 degrees when the main boom is raised or extended,
an alarm will sound. The tilt alarm is located under the
upper control box (refer to Figure 4.7).
Tilt Alarm
Figure 4.7 – Tilt Alarm
12AB60J – 0182099EE
Page 17
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover accident. Do not drive or position the aerial platform for elevated use near any drop-off, hole, slope,
soft or uneven ground, or other tip-over hazard.
Retract and lower the main boom and then drive to a
level surface when the tilt alarm sounds.
The tilt alarm is for added protection and does not justify operating on anything other than firm, flat, level surfaces.
Platform Overload Sensing System
All functions are stopped from the upper and lower controls, when the platform overload limit is exceeded. The
horn will sound intermittently and the red overload light
(refer to Figure 4.8) will blink until the excess load is
removed from the platform. At that time, the machine
functions are again operational.
Chapter 4 – Safety Devices
Platform
Overload Light
Note
If the platform overload sensing system is tripped while
operating the machine, the emergency power system
may still be used for emergency machine operation from
either the lower or upper controls.
Platform
Overload Light
Figure 4.8 – Upper Controls
If the platform becomes significantly overloaded, or if
an upward force on the platform exceeds approximately
445 N (100 lb), the system will enter into error mode,
stopping all functions from the upper and lower controls.
The horn will then sound constantly and the overload
light will stay illuminated at the upper and lower controls
(refer to Figure 4.8 and 4.9).
Figure 4.9 – Lower Control Panel
The system will remain in error mode until the excess
load is removed from the platform and the emergency
stop button or start switch is cycled off and back on,
resetting the system. At that time, the machine functions are operational.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover accident. Do not exceed the capacity values
indicated on the platform rating placard.
The overload sensing system is not active when the machine is being driven with the booms in the stowed position. This allows the machine to be driven without the
system sensing an overload due to rough ground conditions.
To eliminate repeated tripping of the system during machine operation, there is a five second delay in machine
functions following:
• starting the engine.
• placing the drive/boom selector switch in the boom
position when the main boom is below horizontal
and fully retracted.
• removing excess load from the platform.
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Chapter 4 – Safety Devices
Engine Protection Systems
A constant tone alarm will sound to warn against high
engine temperature or low oil pressure.
The engine will shut-down if the operating temperature
exceeds a preset level or if the oil pressure is too low for
safe operation. An engine temperature gauge is on the
gauge panel above the lower controls (refer to Figure
4.10).
Engine
Temperature
Gauge
Figure 4.10 – Engine Gauge Panel
High Engine Temperature Alarm
If the coolant in a Cummins engine exceeds the engine
operating temperature an alarm will sound and the engine will shut off.
Do not restart the engine until the condition that caused
the overheating has been corrected.
Low Oil Pressure Alarm
The low oil pressure alarm sounds when the engine oil
pressure is near the lower limit for safe engine operation. If the alarm sounds, lower the platform to the ground
and then turn the engine off. Do not restart the engine
until the condition that caused the low oil pressure has
been corrected.
Flashing Lights
Optional red or amber flashing lights may be located on
each side of the machine, on the top of the cowling (refer to Figure 4.11). The flashing lights warns personnel
that the aerial platform is in the area.
Flashing Light
Figure 4.11 – Flashing Light
The light flashes at about one flash per second when
the engine is running.
Driving Lights
Optional headlights and blinking tail lights may be installed on the machine. The headlights are located on
the top of the front cowling. The tail lights are mounted
on the sides of the rear cowling.
Driving lights help improve visibility while driving the
aerial platform and help others see it too. Driving lights
are not for driving on public roadways.
Platform Work Lights
Optional platform work lights may be located on the top
rail of the platform, one on each side of the upper control panel.
Use the platform lights to improve visibility while working aloft in dimly lit areas. Do not use the platform work
lights to drive on public roadways.
If the engine oil pressure falls below a safe operating
value the engine will shut off. The engine can be restarted with low oil pressure, but it will only run a few
seconds before it shuts off again.
Horn
The horn may be used to warn personnel on the ground.
The horn button is on the right side of the upper control
box. The horn is operational when the emergency stop
button and the start switches are both on, at the lower
and the upper controls.
Drive Motion Alarm
An optional drive motion alarm may be provided on the
machine. When the drive/steer control is moved out of
neutral the alarm sounds, in short beeps, to warn personnel in the work area to stand clear.
14AB60J – 0182099EE
Figure 4.12 – Platform Work Lights
Page 19
Chapter 5 – Gauges and Displays
The aerial platform is equipped with several gauges to
monitor the condition of the machine before and during
operation.
Hour Meter
The hour meter is located on the front of the lower controls (refer to Figure 5.1). It measures the accumulated
engine operating time.
Hour
Meter
On liquid cooled engines it shows the temperature of
the water and antifreeze mixture in the engine block.
The gauge on air cooled engines shows the temperature of the engine oil as the oil leaves the filter.
Ammeter
The ammeter is located on the engine gauge panel (refer to Figure 5.2). The ammeter displays the level of
current flow from the alternator to the batteries.
After the engine has been running for a few minutes
under normal operating conditions, the ammeter gauge
indicator should read “0.”
Engine Air Filter Gauge
The air filter gauge (refer to Figure 5.2) is located above
the lower control panel. The gauge measures the air
pressure between the intake manifold and the air filter.
The yellow indicator disk inside the sight glass stays at
its highest level when the engine is turned off.
When the yellow indicator disk reaches the red area,
it’s time to change the filter element. After changing the
filter, press the reset button to reset the indicator disk to
the bottom of the sight glass.
Figure 5.1 – Lower Controls
Engine Temperature Gauge
The temperature gauge is located on the gauge panel
above the lower controls (refer to Figure 5.2).
Air Filter
Gauge
Engine
Temperature
Gauge
Reset Button
Fuel
The fuel gauge is on top of the fuel tank (refer to Figure
5.3). Read the gauge at the line in the clear plastic win-
dow. The fuel tank is behind the doors on the right side
of the machine.
Note
Do not run a diesel fuel tank empty. Air in the fuel line
makes the engine hard to start.
Fuel Level
Ammeter
Figure 5.2 – Engine Gauge Panel
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Figure 5.3 – Fuel Tank
Page 20
Chapter 5 – Gauges and Displays
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 5.4) is located on
the return line filter on the left side of the reservoir. The
reservoir is behind the door on the right side of the turntable. During high pump flow situations, the gauge indicates the condition of the filter. When the needle on the
gauge is in the red zone, it is time to change the filter.
Filter Gauge
Fluid Level and Temperature Gauge
A gauge on the end of the reservoir displays the level
and temperature of the hydraulic fluid (refer to Figure
5.5). The reservoir is behind the door on the right side of
the turntable.
Fluid Level and
Temperature Gauge
Figure 5.5 – Hydraulic Fluid Gauge
If the temperature rises above 93°C (200°F) stop machine operation and let the fluid cool before resuming
operation.
Figure 5.4 – Hydraulic Fluid Filter Gauge
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Page 21
Chapter 6 – Controls
ADanger
Pinch points may exist between moving components. Death or serious injury can result from being
trapped between components, buildings, structures,
or other obstacles. Make sure all personnel stand
clear while operating the aerial platform.
Controls to position the platform are located on the lower
control panel on the turntable and on the upper control
panel in the platform. Drive controls are located on the
upper control panel only.
Battery Disconnect Switch
The battery disconnect is located behind the door on
the left side of the turntable above the engine gauge
panel (refer to Figure 6.1).
Battery Disconnect Switch
• Ground operation switch
• Rotation switch
• Riser boom elevation switch
• Main boom elevation switch
• Boom extension switch
• Jib articulation switch
• Boom speed knob
• Platform level switch
• Platform rotate switch
• Engine/emergency power switch
• Throttle switch
• Hydraulic warm-up switch (option)
Figure 6.1 – Battery Disconnect Switch
The battery disconnect removes electrical power from
all electrically controlled functions when in the off position. Place the switch in the on position to electrically
connect the battery to the electrical system.
ACaution
Only authorized personnel should operate the aerial
platform. Unqualified personnel may cause injury
to coworkers or property damage. Lock the battery
disconnect switch in the off position before leaving
the aerial platform unattended.
Turn the battery disconnect switch off to prevent unauthorized use of the aerial platform.
Lower Controls
The lower controls (refer to Figure 6.2) are located on
the right side of the turntable. Boom and platform functions can be operated from the lower controls. The following are located on the lower control panel.
• Emergency stop button
• Control selector switch
• Start switch
Figure 6.2 – Lower Controls
Emergency Stop Button
The emergency stop is a two-position, red push button.
Push the button in to disconnect power to all control
circuits. Pull the button out to restore power.
Control Selector Switch
Use the control switch to select between off, lower control, and upper control operation. Insert the key in the
switch and turn the switch to the upper controls position
to operate the aerial platform from the upper controls
and in the lower controls position for lower controls operation.
Start Switch
The start switch works like an automobile ignition switch.
Push the start button until the engine starts, then release it to on. If the engine dies, the control switch must
be turned to off before the engine can be restarted.
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Page 22
Chapter 6 – Controls
An alarm sounds when the switch is turned on to warn
others that the machine engine is being started.
Ground Operation Switch
Hold the switch (refer to Figure 6.2) up continually to
operate the machine from the lower controls. This switch
is spring returned to the off position.
Rotation Switch
The rotation switch (refer to Figure 6.2) is used to rotate
the turntable in a clockwise or counterclockwise direction. The switch is spring returned to the center off position.
Hold the switch to the up to rotate the turntable clockwise. Hold the switch to the down to rotate the turntable
counterclockwise.
Riser Boom Elevation Switch
The riser boom elevation switch (refer to Figure 6.2) is
used to raise or lower the riser boom. The switch is spring
returned to the center off position.
Hold the switch up to raise the riser boom. Hold the
switch down to lower the riser boom.
Main Boom Elevation Switch
The main boom elevation switch (refer to Figure 6.2) is
used to raise or lower the main boom. The switch is
spring returned to the center off position.
Hold the switch up to raise the main boom. Hold the
switch down to lower the main boom.
Boom Extension Switch
The boom extension switch (refer to Figure 6.2) is used
to extend or retract the tip boom. The switch is spring
returned to the center off position.
Hold the switch up to extend the tip boom. Hold the switch
down to retract the tip boom.
Jib Articulation Switch
The jib switch (refer to Figure 6.2) is used to raise or
lower the jib. The switch is spring returned to the center
off position.
Hold the switch up to raise the jib. Hold the switch down
to lower the jib.
Boom Speed Knob
Use the boom speed control knob (refer to Figure 6.2)
to control the speed of the following boom functions.
• Riser and main boom raise/lower
• Jib boom raise/lower
• Boom extend/retract
• Platform level up/down
• Turntable rotation clockwise/counterclockwise
Set the knob to slow when beginning a movement. The
speed may be increased by slowly rotating the knob toward fast. For smooth operation, rotate the knob to slow
when ending movement.
Platform Level Switch
The platform level switch (refer to Figure 6.2) is used to
level the platform floor with respect to the ground. The
switch is spring returned to the center off position.
Hold the switch up to tilt the platform floor upward or
away from the ground. Hold the switch down to tilt the
platform floor downward or toward the ground.
Platform Rotate Switch
The platform rotate switch (refer to Figure 6.2) is used
to rotate the platform relative to the end of the tip boom.
The switch is spring returned to the center off position.
Hold the switch up to rotate the platform clockwise. Hold
the switch down to rotate the platform counterclockwise.
Engine/Emergency Power Switch
Hold the engine/emergency power switch (refer to Figure 6.2) down to operate aerial platform functions using
the emergency power system. Release the switch to disengage the emergency power system.
Note
The emergency power system is for lowering the platform during an emergency and is not intended for normal machine operation.
If the engine is running, it will stop when the switch is
placed in the emergency power position.
Throttle Switch
The throttle switch (refer to Figure 6.2) is used to set the
engine throttle speed to either low or high idle.
Place the switch in the low position before starting the
engine and in the high position for engine and/or hydraulic system warm-up.
The engine has a two speed throttle operation from the
lower controls. When the throttle switch is in the low
position the engine is at idle. Placing the switch in the
high position increases the engine speed to high-range.
Placing the ground controls switch in the on position
also increase the engine speed to high-range.
Hydraulic System Warm-up Switch
Some engines may have a hydraulic fluid warm-up system. This system may be used to warm the hydraulic
fluid when the ambient temperature is below 32°F (0°C)
and boom movement is sluggish because of cold fluid.
There is a toggle switch for the warm-up system on the
lower control panel and one on the left side of the upper
control panel.
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Page 23
The engine must be running and the switch used to turn
the system on, must be at the same location that the
engine was started. For example, if the engine was
started from the lower controls, the warm-up switch at
the lower controls must be used for the system to operate.
Machine functions are not operational while using the
hydraulic warm-up system.
Circuit Breaker Reset Buttons
The lower control panel has a circuit breaker for the
throttle, run, and system control circuits. There is a reset button for each circuit breaker on the front of the
lower control panel (refer to Figure 6.3).
Chapter 6 – Controls
Circuit Breaker Reset Buttons
Figure 6.4 – Upper Control Panel Front
The circuit breakers protect the electrical wiring and components from electrical overload in case of a short circuit or other fault.
ACaution
A tripped circuit breaker indicates a malfunction in
the electrical system. Component damage can result if the cause of the malfunction is not corrected.
Do not operate the aerial platform if the circuit
breaker trips repeatedly.
Circuit Breaker Reset Buttons
Figure 6.3 – Lower Controls
The upper control panel has a circuit breaker for the
swing (turntable rotation), lift, drive and main control circuits. The circuit breakers are on the front of the upper
control panel (refer to Figure 6.4).
Push the button to reset the circuit breaker.
Upper Controls
The upper controls (refer to Figure 6.5) are located on
the control panel at the platform. Boom, platform, and
drive functions can be operated from the upper controls.
The following controls are located on the upper control
panel.
• Emergency stop button
• Start switch
• Drive/boom selector switch
• Boom joystick
• Riser boom elevation switch
• Boom extension switch
• Jib articulation switch
• Boom speed knob
• Drive joystick
• Drive range switch
• Platform level switch
• Platform rotate switch
• Engine/emergency power switch
• Throttle switch
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Page 24
Chapter 6 – Controls
Emergency Stop
Engine Throttle
Boom Extend
Riser Boom
Jib
Boom Joystick
Platform Rotate
Engine/Emergency
Power
Drive
Range
Speed
Knob
Platform
Level
Drive/Boom
Selector
Drive Joystick
Figure 6.5 – Upper Control Panel Top
Emergency Stop Button
The emergency stop is a two-position, red push button
on the top of the upper control panel. Push the button in
to disconnect power to all control circuits at the upper
controls. Pull the button out 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.
Note
On some machines it may be necessary to pause about
three seconds in the on position before going to start so
the starter can engage.
Turn the switch to off to turn the engine off and save fuel
if the platform is to stay in a particular position for a long
time.
Drive/Boom Selector Switch
Place the drive/boom selector switch down in the drive
position to drive the aerial platform.
Place the drive/boom selector switch up in the boom
position to operate the boom functions.
Note
Boom and drive functions can not be operated at the
same time.
Boom Joystick
The boom joystick is used to raise and lower the main
boom and to rotate the turntable. The boom and turntable functions may be operated simultaneously.
Note
The distance the joystick is moved is proportional to the
speed of the function.
Push the emergency stop button in when the upper controls are not in use to protect against unintentional operation.
Start Switch
The engine can be started from the platform using the
anti-restart master switch on the front of the upper control panel (refer to Figure 6.6).
Start Switch
Figure 6.6 – Upper Control Panel Front
This switch is similar to an automobile ignition switch.
Turn the switch to start until the engine starts, then release it to on. If the engine dies, the switch must be
turned to off before it can be turned back to start.
Hold the joystick forward to raise the main boom and
backward to lower the boom.
Hold the joystick to the right to rotate the turntable counterclockwise and to the left to rotate the turntable clockwise.
Riser Boom Elevation Switch
The riser boom elevation switch is used to raise or lower
the riser boom. The switch is spring returned to the center off position.
Hold the switch up to raise the riser boom. Hold the
switch down to lower the riser boom.
Boom Extension Switch
The boom extension switch is used to extend or retract
the tip boom. The switch is spring returned to the center
off position.
Hold the switch down to extend the tip boom. Hold the
switch up to retract the tip boom.
Jib Articulation Switch
The jib switch is used to raise or lower the jib. The switch
is spring returned to the center off position.
Hold the switch up to raise the jib. Hold the switch down
to lower the jib.
An alarm sounds when the switch is turned on to warn
others that the machine engine is being started.
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Page 25
Chapter 6 – Controls
Boom Speed Knob
Use the boom speed control knob to control the speed
of the following boom functions.
• Riser boom raise/lower
• Jib boom raise/lower
• Boom extend/retract
• Platform level up/down
Set the knob to slow when beginning a movement. The
speed may be increased by slowly rotating the knob toward fast. For smooth operation, rotate the knob to slow
when ending movement.
Drive Joystick
The drive joystick is used to control forward and reverse
motion of the aerial platform. It is also used to steer the
machine. The steering and drive functions may be operated simultaneously.
Note
The distance the joystick is moved is proportional to the
speed of the function.
Hold the joystick forward to move the aerial platform
forward and backward to move in reverse as indicated
by the directional arrows on the chassis.
Hold the joystick to the right to steer the aerial platform
to the right and to the left to steer to the left as indicated
by the directional arrows on the chassis.
Note
The steering wheels are not self-centering. Set the steering wheels straight ahead after completing a turn.
Engine/Emergency Power Switch
The engine/emergency power switch is spring returned
to the engine position for aerial platform engine operation.
Place the switch in the emergency power position and
hold to operate aerial platform functions using the emergency power system. Release the switch to disengage
the emergency power system.
Note
The emergency power system is for lowering the platform during an emergency and is not intended for normal machine operation.
If the engine is running, it will stop when the switch is
placed in the emergency power position.
Throttle Switch
The throttle switch is used to set the engine throttle speed
to either low or high idle.
Place the switch in the low position for normal machine
operation and in high to drive at maximum speed.
The engine has a three speed throttle operation from
the upper controls. Independent of the throttle switch,
the platform foot switch, when depressed, increases the
engine speed from low to mid-range.
High engine speed is obtained when the main boom is
horizontal, the foot switch is depressed, the throttle
switch is in the high position, and the drive joystick is
moved out of neutral into the forward or reverse position.
Drive Range Switch
The drive range switch has two positions to select drive
wheel operation:
• HI – high speed and low torque operation.
• MID – high speed and high torque operation.
• LO – low speed and high torque operation.
Platform Level Switch
The platform level switch is used to level the platform
floor with respect to the ground. The switch is spring
returned to the center off position.
Hold the switch up to tilt the platform floor upward or
away from the ground. Hold the switch down to tilt the
platform floor downward or toward the ground.
Platform Rotate Switch
The platform rotate switch is used to rotate the platform
relative to the end of the tip boom. The switch is spring
returned to the center off position.
Hold the switch to the left to rotate the platform clockwise. Hold the switch to the right to rotate the platform
counterclockwise.
The machine can be driven in mid-range engine speed
with the throttle switch place in the low position.
Horn Button
The horn button is on the right side of the upper control
panel. Press the button to sound the horn.
Platform Foot Switch
The upper controls are interlocked through the platform
foot switch (refer to Figure 6.7). Step down on and hold
the platform foot switch to activate the drive and boom
functions from the upper controls.
Platform Foot
Switch
Figure 6.7 – Platform
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Page 26
Chapter 6 – Controls
Machine/Generator Switch
The switch for the optional AC generator is located on
the front of the upper control panel.
Machine/Generator Switch
Figure 6.8 – Upper Control Panel Front
With the engine running, place the switch in the generator position to provide electrical power to the electrical
outlet at the platform. Place the switch in the machine
position to turn off the generator and resume machine
operation.
Machine functions will not operate while the switch is in
the generator position.
Driving and Platform Work Lights
The control for the optional driving lights is on the back
of each light. Place the switch in the on position to operate the driving lights.
The control for the optional platform work lights is on
the back of each light.
Figure 6.9 – Platform Work Lights
22AB60J – 0182099EE
Page 27
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 the 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 can result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
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.
Operator’s Manual
The manual holder is located behind the front cowling
door (refer to Figure 7.1) on the left side of the machine.
Operator’s Manual Holder
Coolant
Cummins engines are liquid cooled. The coolant reservoir is behind the front cowling door on the left side of
the machine (refer to Figure 7.2). When the engine is
cold, there should be about 2.5 cm (1″) of coolant in the
bottom of the reservoir.
Coolant
Reservoir
Figure 7.2 – Coolant Reservoir
ACaution
Engine coolant escaping under pressure can cause
serious burns. Shut the engine off and let it cool
before removing the radiator cap.
Figure 7.1 – Operator’s Manual Holder
Check to see that the proper Operator’s Manual is in
the holder. The manual should be complete with all
pages intact and in readable condition.
Engine
Open the engine compartment doors on the left side of
the machine and visually inspect the engine and its components with the engine off.
Oil Level
Check the engine oil level before starting the engine so
the oil has drained to the pan. The proper oil level is
between the add and full marks on the dipstick.
The distance between the top and bottom dipstick marks
corresponds to about 1 l (1 quart US). Add oil, if necessary, before starting the engine.
Add coolant, if necessary, when the engine is cold and
not running. When running at operating temperature the
coolant should be at the hot level.
.
Radiator
Inspect the radiator hoses and clamps (refer to Figure
7.3) for wear, leakage, or damage. Make sure the hoses
are not hardened, cracked, or feel spongy. Make sure
the cap is in place and tight.
Hose
Cap
Clamps
Fan Belt
Figure 7.3 – Radiator
Coolant leaks are easily visible on the ground. Check
under the chassis for coolant that has leaked.
AB60J – 0182099EE23
Page 28
Chapter 7 – Prestart Inspection
Make sure the radiator core and ventilation openings on
the cover are free of bugs, dirt, or foreign material that
might restrict airflow.
Fuel Tank
Check the fuel level (refer to Figure 7.4) and add fuel if
necessary. Make sure the cap is securely fastened on
the tank.
Cap
Fuel Level
Figure 7.4 – Fuel Tank
Fuel Line
Visually inspect the entire length of the fuel line. Start at
the fuel tank and trace the line to the engine inspecting
for leaks and damage.
Air Filter
The air filter gauge (refer to Figure 7.5) has an indicator
to show when the filter needs replaced.
Air Filter Gauge
Engine
Temperature
Gauge
Reset Button
Ammeter
Figure 7.5 – Engine Gauge Panel
To inspect the air filter:
3. Insert the key into the control switch and press the
start button to turn the engine on.
4. Check the clear zone after running the engine for
30 seconds.
• If the indicator is in the red area, replace the filter.
• If the indicator is in the clear area, the filter is OK.
5. Shut off the engine.
Charging System
When the engine is running, the ammeter needle (refer
to Figure 7.5) should be to the right of “0.” Left of the “0”
is discharging.
Cold Weather Start Kit—Block Heater
If the machine is equipped with an optional engine block
heater, visually inspect the heater and power cord. Inspect for leaks around the heater and for damage to the
power cord.
Electrical System
Electrical power is supplied from one, 550 CCA, 12 volt
battery. The battery supplies 12 volt DC electrical power
to operate the aerial platform electrical and electrohydraulic components.
AWarning
Batteries give off hydrogen and oxygen that can
combine explosively. Death or serious injury can
result from a chemical explosion. Do not smoke or
permit open flames or sparks when checking the
batteries.
ACaution
Even with low voltage electrical systems, severe
arcing can occur. Electrical shock or component
damage can result from contact with energized conductors. Use caution when working with any electrical device.
The battery is behind the door on the left side of the
turntable.
Emergency Power Battery
The emergency power battery (refer to Figure 7.6) is
behind the door on the left side of the turntable. The
battery is automatically charged when the engine is running.
1. Turn the battery disconnect switch on and close the
cowling door.
2. At the lower controls, pull the emergency stop button outward.
24AB60J – 0182099EE
Page 29
Chapter 7 – Prestart Inspection
Terminals
Caps
Figure 7.6 – Emergency Power Battery
Include the emergency power battery when inspecting
and servicing the electrical system.
Battery Fluid Level
Remove the caps from each battery (refer to Figure 7.6).
Visually check the battery fluid level. If the level is not
within 6 mm (1/4″) of the bottom of the filler neck inside
each hole, add distilled water.
Replace the caps on the batteries. The caps must be in
place and tight during machine operation.
Battery Terminals
Check the top of the batteries, the terminals, and cable
ends (refer to Figure 7.6). They should be clean and
free of corrosion. Clean the top of the batteries if necessary.
Clean the terminals and cable ends with a wire brush or
terminal cleaning tool. All cable ends must be securely
fastened to the terminals.
The hydraulic reservoir is behind the door on the left
side of the turntable. The pump is mounted on the engine.
Fluid Level
Check the hydraulic reservoir fluid level with the aerial
platform stowed on a level surface. The fluid level must
be between the full and add marks as viewed on the
sight glass (refer to Figure 7.7).
Full
Add
Figure 7.7 – Fluid Level Indicator
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.
If necessary, remove the filler cap and add fluid of the
proper type. Refer to Chapter 2 for the proper type and
grade of hydraulic fluid to use. The need to regularly
add fluid indicates a leak that should be corrected.
Cables and Wiring Harness
Inspect all cables and wiring for wear and/or physical
damage such as loose connections, broken wires, and
frayed insulation. Check the wiring in areas where a
change in routing direction may cause them to become
pinched. Make sure the cables and wires are properly
routed to avoid sharp edges, pinching, and scuffing.
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.
AB60J – 0182099EE25
The sight glass on the reservoir has an internal thermometer to measure the fluid temperature. The temperature should be less than 93°C (200°F).
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
Inspect all hydraulic hoses, tubes, and fittings for wear,
leakage, or damage (refer to Figure 7.8). Make sure the
hoses are properly routed to avoid sharp edges, kinking, and scuffing. Inspect the tubes for dents or other
damage that may restrict fluid flow. Make sure all hoses
and tubes are held firmly in their support brackets.
Page 30
Chapter 7 – Prestart Inspection
Figure 7.8 – Hoses, Tubes, and Fittings
Hydraulic fluid leaks are easily visible on the ground.
Check under the chassis for fluid that has leaked.
Tires and Wheels
Visually inspect the tires and wheels (refer to Figure
7.9) to make sure they are suitable for service. Check
the wheel lug nuts to see that none are missing, damaged, or loose.
Lower Control Station
With no personnel in the platform, test the operation of
each control from the lower controls (refer to Figure 7.10).
Control Selector
Switch
Engine/Emergency
Emergency
Stop Button
Start
Switch
Power Switch
Ground Operation
Switch
Figure 7.9 – Tires and Wheels
The aerial platform has foam filled tires. Foam filled tires
do not have a pressure decal or a valve core.
Inspect for large holes or cuts where foam is coming out
of the tire. Look for large imbedded objects, such as
angle iron, that can rip a tire open.
Punctures caused by bolts, screws, or nails are not a
problem for foam filled tires.
Figure 7.10 – Lower Controls
Operating Controls
Use the following procedure to operate the machine from
the lower controls.
1. Turn the battery disconnect switch on.
2. At the lower controls, pull the emergency stop button outward. Insert the key in the control selector
switch and turn the switch to the lower control position.
3. Press the start button until the engine starts, then
release.
4. Let the engine warm to operating temperature.
5. Hold the ground operation switch upward.
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 all personnel stand clear of the aerial platform while performing the prestart inspection.
6. Test the operation of each function in both directions.
26AB60J – 0182099EE
Page 31
Chapter 7 – Prestart Inspection
Note
When checking the turntable rotation function in the
clockwise direction, the turntable will rotate toward you.
Emergency Stop
Push the emergency stop button in to turn off the engine. The lower control functions should not operate with
the emergency stop in this position.
Emergency Power
Place the battery disconnect switch, the emergency stop
button, and the master switch in the on position.
Hold the engine/emergency power switch in the emergency power position and the ground operation switch
in the on position to operate the aerial platform from the
lower controls using the emergency power system.
Emergency Lowering
The riser and main booms can be lowered in an emergency using their respective emergency lowering knobs.
The emergency lowering knobs are at the base end of
the lift cylinders.
Use the following procedure to test the emergency lowering system.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
4. Turn the knob to close the cylinder bleed down valve.
5. Slowly turn the knob to open the bleed down valve
on the main boom lift cylinder (refer to Figure 7.12).
The boom should slowly lower by gravity.
Emergency
Lowering Knob
1. Use the lower controls to raise the main and riser
booms.
2. Turn the engine off.
ADanger
Pinch points may exist between moving components. Death or serious injury will result from becoming trapped between components. Stand clear
of moving components while test operating the machine.
3. Slowly turn the knob to open the bleed down valve
on the riser boom lift cylinder (refer to Figure 7.11).
The boom should slowly lower by gravity.
Emergency
Lowering Knob
Inside Turntable
Figure 7.12 – Main Boom
Emergency Lowering Knob
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
6. Turn the knob to close the cylinder bleed down valve.
Level Sensor
Use the following procedure to test the level sensor.
1. Position the aerial platform on a smooth, flat, level
surface.
2. Remove all persons and materials from the platform.
3. Start the engine and raise the main boom so it is off
of the switch roller at the rear of the turntable.
4. Open the rear door on the left side of the machine
to access the level sensor (refer to Figure 7.13).
Figure 7.11 – Riser Boom
Emergency Lowering Knob
AB60J – 0182099EE27
Page 32
Chapter 7 – Prestart Inspection
Level Sensor
Sandblast Protection Kit
The optional sandblast protection kit protects the cylinders from abrasion while sandblasting or from paint
overspray. Rubber covers protect each cylinder rod as
it extends and retracts (refer to Figure 7.15). The covers prevent sand and paint from damaging the cylinder
seals and rod.
Figure 7.13 – Level Sensor
5. Pull the level sensor to the side as far as possible to
activate the tilt alarm.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable, or override any safety device.
6. If the alarm does not sound, remove the machine
from service until the problem is corrected.
7. Lower the main boom.
Flashing Light
If the machine is equipped with optional flashing lights,
visually check to see that they flash. There is one light
on each side of the machine (refer to Figure 7.14). The
lights should flash when the engine is running.
Flashing Light
Cylinder Rod Cover
Figure 7.15 – Sandblast Protection
Inspect the covers while operating the machine to ensure they are securely fastened and completely cover
the cylinder rod. Make sure there are no holes in the
covers.
Structures
Visually inspect all weldments and related components.
It is important to inspect the fasteners that connect the
components.
Weldments
Visually inspect all weldments for abnormal wear, abrasion, or deformation that could cause interference between moving parts.
Inspect the welds on the structural components. Pay
particular attention to boom welds. The area to be inspected should be clean and free of dirt and grease.
Look for visible cracks in the weld and at the weld to
parent material joint. A bright light may be used to provide adequate visibility of the inspection area.
Slide Pads
The main boom has slide pads between it and the tip
boom.
Use the lower controls to raise the main boom to hori-
Figure 7.14 – Flashing Light
28AB60J – 0182099EE
zontal. Extend the tip boom about 30 cm (1′). Visually
inspect the slide pads (refer to Figure 7.16) to make
sure they are in place and are not obviously loose.
Page 33
Slide Pads
Chapter 7 – Prestart Inspection
Upper Control Station
Inspect the platform and upper controls only if all functions operated properly from the lower controls.
Guardrail System
The guardrail system (refer to Figure 7.18) includes the
top rail, mid rail, toeboards and a gravity gate or optional swinging gate.
Top Rail
Figure 7.16 – Boom Sections
Inspect the surface where the pads contact the intermediate and tip booms. The paint must be in place with
no signs of bare metal.
Fasteners
Visually inspect all fasteners to see that none are missing or loose.
Pay particular attention to all of the bolts, nuts, rollpins,
collars, and snap rings that connect the booms and cylinders. They should all be present, tight, and not damaged in any way.
Raise the main boom to access the rotation bearing bolts
in the turntable (refer to Figure 7.17).
Inspect the rotation bearing bolts to ensure that none
are missing, damaged, or loose.
Rotation Bearing Bolts
Lanyard
Anchors
Platform Foot
Switch
Gravity
Gate
Mid Rail
Toeboard
Figure 7.18 – Guardrail System
Inspect all components of the guardrail system. The rails
and toeboards must all be in place and free of any damage or deformation. Visually check the rail and toeboard
welds for cracks. All bolts and nuts fastening the platform in place must be present and not show any signs
of looseness.
Inspect the gravity gate to be sure it is present, is not
damaged, and moves freely.
Inspect the optional swinging gate to see that it swings
freely, closes firmly, and is not deformed in any way.
Make sure the spring closes and secures the gate when
the gate is closed.
Lanyard Anchors
There are two lanyard anchors below the upper control
panel (refer to Figure 7.18).
Visually inspect the lanyard anchors to make sure they
are in place, are not deformed and are securely fastened to the platform.
Operating Controls
Use the following procedure to operate the machine from
Figure 7.17 – Inside Turntable
the upper controls.
1. Turn the battery disconnect switch on.
2. At the lower controls, pull the emergency stop button outward. Insert the key in the control selector
and turn the switch to the upper control position.
3. At the upper controls (refer to Figure 7.19), pull the
emergency stop button outward.
AB60J – 0182099EE29
Page 34
Chapter 7 – Prestart Inspection
Emergency Stop
Engine Throttle
Boom Extend
Riser Boom
Jib
Boom Joystick
Platform Rotate
Engine/Emergency
Power
Drive
Range
Speed
Knob
Platform
Level
Drive/Boom
Selector
Drive Joystick
Figure 7.19 – Upper Control Panel Top
4. Turn the master start switch on the front of the upper control panel to start until the engine starts, then
release it.
5. Let the engine warm to operating temperature.
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 all personnel stand clear of the aerial platform while performing the prestart inspection.
Hold the engine/emergency power switch in the emergency power position and step on the platform foot switch
to operate the aerial platform from the upper controls
using the emergency power system.
Horn
Press the horn button to ensure that it sounds to warn
personnel in the area.
Electrical Power Outlet
With the engine running, place the machine/generator
control (refer to Figure 7.20) in the generator position to
provide electrical power to the outlet at the platform and
to the outlet on the end of the generator housing.
Machine/
Generator Switch
Figure 7.20 – Upper Control Panel Front
6. Place the drive/boom selector switch in the boom
position.
7. Test the platform foot switch by moving a boom function switch without stepping on the foot switch. If
movement occurs the interlock is not functioning
properly. Do not operate the machine until the problem is corrected.
8. Test the operation of each control in both directions
from the upper controls.
9. The drive range switch and maximum travel speeds
are interlocked through a limit switch on the turntable that senses the main boom position. When
the main boom is raised to just below horizontal the
machine should travel in low speed only. To operate in high speed the booms must be stowed.
Emergency Stop
Push the emergency stop button in to turn off the engine. The upper control functions should not operate with
the emergency stop in this position.
Emergency Power
Pull the emergency stop button up and place the antirestart master switch in the on position.
Plug an electrical tool into the receptacle at the platform
and at the generator and try to operate the tool to verify
proper operation of the outlet.
Drive Motion Alarm
The machine may be equipped with an optional drive
motion alarm. Drive in both the forward and reverse directions to ensure that the alarm sounds to warn personnel in the area that the aerial platform is in motion.
Driving and Work Lights
The machine may be equipped with driving lights and/
or platform working lights. Turn the engine on and use
the switch on the back of each light to momentarily turn
it on to see that it works.
Platform Control Cover
The machine may be equipped with an optional platform control cover. Inspect the cover to ensure it fits
properly over the control panel.
Tow Kit
The machine may be equipped with an optional tow kit.
Inspect the tow bar and steering arm to verify the components are present and in working condition.
30AB60J – 0182099EE
Page 35
Chapter 7 – Prestart Inspection
Placards and Decals
Inspect all safety and operational placards and decals.
Make certain they are in place, in good condition, and
are legible.
The placards and decals may be cleaned 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.
Wet paint overspray may be removed using a natural
biodegradable solvent and a soft cloth.
Replace any missing or illegible placards or decals before operating the aerial platform. Placard and decal kits
are available from Snorkel dealers.
The safety related placards and decals are illustrated
on the following pages.
0162366
0162336E
Right Side
0073298
0074311
(One per Cylinder)
0162366
0162366
This machi ne is not elec tricall y insulated .
Do not operate in proximity to high
voltage power lines and parts!
0162336E
0074311
0162336E
0073298
AB60J – 0182099EE31
Page 36
Chapter 7 – Prestart Inspection
0150602
0162366
0162336E
KEEP CLEAR OF DESCENDING BOOM
DEATH OR SERIOUS INJ URY CAN
OCCUR F ROM DESC ENDING BO OM
0150602
0150602
0150602
0162366
0162336E
0073298
Back of Turntable
00070901
Left Side
0162366
0162336E
0162366
0162366
This machine is not electrically insulated.
Do not operate in proximity to high
voltage power lines and parts!
0162336E
0162336E
0070901
0073298
32AB60J – 0182099EE
Page 37
Chapter 7 – Prestart Inspection
0074210
0162366
0162336E
Inside Lower Control Door
0151410E
(Cummins Engines Only)
Radiator
FAILURE TO COMPLY TO THE FOLLOWI NG RULES CAN RESULT IN
z
Do not operate this machine unless you are a qualified operator and
have read and th oroughly understand all inf ormation g iven in t he
Operator's Manual and on danger and caution signs on this machine.
z
This machine is not electrically insulated. Maintain 10 feet minimum
clearanc e from electric al power lines an d apparatus.
z
Do not exce ed the unrestric ted platform capa city shown on t he
platform.
z
Do not operate this machine on soft or unstable ground.
z
Only o perate thi s machine on flat level g round.
z
Do not use ma chine as a crane, hoist, or jack, an d do not position
machine against another object to steady the platform.
z
Do not use ma chine if not funct ioning proper ly or damaged in any way.
z
Do not modi fy or alter this ma chine.
z
See the Operator's manual for other hazard information.
DEATH OR SERIOUS INJURY.
ELECTROCUTION HAZARD
TIPPING & FALLING HAZA RD
0074210
0162366
0162366
DANGER
0074210
0072531
Platform
This machine is not electrically insulated.
Do not operate in proximity to high
voltage power lines and parts!
0162336E
0162336E
KEEP CLEAR
Rotatin g Engine Pa rts
Serious Injury Can Result
0151410E
0072531
0151410E
0072530
Upper Control Panel Front
0072530
AB60J – 0182099EE33
Page 38
Chapter 7 – Prestart Inspection
34AB60J – 0182099EE
Page 39
Chapter 7 – Prestart Inspection
Prestart Inspection Checklist
ItemInspect ForOk
Operator’s ManualIn manual holder
Engine
Oil levelBetween full and add marks
CoolantLiquid cooled engines – proper fluid level
RadiatorCap tight, good condition and clean
Air cooled enginesAir intake and fan free of obstructions. Belt
in good condition
Fuel tank and lineTank full, cap in place and tight/no leaks
Air filterClear indicator
Charging systemProper operation
Cold weather start kitNo damage or deformation
Electrical System
Emergency power batteryCondition and charged for proper operation
Battery fluid level and terminalsProper level/clean, connectors tight
Cables and wiring harnessNo wear or physical damage
Hydraulic System
Fluid levelBetween full and add marks
Fluid filterVerify operation in the green zone
Hoses, tubes, and fittingsNo leaks
Cold weather warm-up kitProper operation
Tires and Wheels
Foam filledGood condition
Lower Control Station
Operating controlsProper operation
Emergency stop and emergency powerShuts off lower controls/proper operation
Emergency LoweringProper operation
Level SensorSounds tilt alarm
Flashing LightsProper operation
Sandblast Protection KitIn place and proper operation
Airline to PlatformIn place and proper operation
Structures
WeldmentsWelds intact, no damage or deformation
Slide padsIn place, no damage or deformation
FastenersIn place and tight
Upper Control Station
Guardrail system and lanyard anchorsWelds intact, no damage or deformation
Operating controlsProper operation
Emergency stop and emergency powerShuts off upper controls/proper operation
HornSounds when activated
Electrical power outletProper operation
Drive motion alarmSounds when aerial platform moves
Driving and work lightsProper operation
Platform control coverIn place and proper operation
Tow KitIn place, no damage or deformation
Placards and DecalsIn place and readable
AB60J – 0182099EE35
Page 40
Chapter 7 – Prestart Inspection
36AB60J – 0182099EE
Page 41
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 or national safety regulations.
Pinch points may exist between moving components. Death or serious injury will result from becoming trapped between components, buildings,
structures, or other obstacles. Make sure there is
sufficient clearance around the machine before
moving the chassis, booms, or platform. Allow sufficient room and time to stop movement to avoid
contact with structures or other hazards.
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover 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.
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 mounted at the rear of the platform.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover accident. Do not exceed the capacity values
indicated on the platform rating placard.
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.
tem may be equipped with an optional cold weather
warm-up kit.
Engine Cold Weather Start Kit
The engine may be equipped with a block heater.
Plug the heater cord in eight hours before starting the
engine. The heater will warm the engine block to make
cold weather starting easier.
Unplug the power cord before starting the engine.
Hydraulic System Cold Weather Warm-Up
Some engines may have a hydraulic fluid warm-up system that will automatically warm the fluid upon activating the warm-up switch. The hydraulic fluid may also be
warmed manually if the machine is not equipped with
the optional warm-up system.
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.
Hydraulic System Warm-up Switch
This system may be used to warm the hydraulic fluid
when the ambient temperature is below 32°F (0°C) and
boom movement is sluggish because of cold fluid.
There may be a toggle switch for the warm-up system
on the lower control panel and/or one on the left side of
the upper control panel.
The engine must be running and the switch used to turn
the system on must be at the same location that the
engine was started. For example, if the engine was
started from the lower controls, the warm-up switch at
the lower controls must be used for the system to operate.
To operate the warm-up system:
Cold Weather Start-Up
If the ambient temperature is 0°C (32°F) or below, the
engine and hydraulic system oil may need to be warmed
before operation. Do not operate the engine at more than
a fast idle until the engine and hydraulic oil has had a
chance to warm. The engine may be equipped with an
optional cold weather start kit.
Cold, thick hydraulic oil does not flow well and may cause
delay in response to control movement and improper
voltage output of the AC generator. Cold oil may also
cause cavitation and pump damage. The hydraulic sys-
AB60J – 0182099EE37
1. Start the engine and place the engine throttle in the
low position.
2. From the same control station that the engine was
started, place the warm-up switch in the on position.
3. After the hydraulic fluid reaches 50°F (10°C) as indicated on the thermometer, place the warm-up
switch in the off position.
Page 42
Chapter 8 – Operation
Manually Warming The Hydraulic System
The hydraulic oil may be warmed by bottoming out the
boom extension cylinder. Raise the main boom so it is
horizontal and operate the boom retract function while
the machine is stowed. With the cylinder bottomed out
the oil flow will produce heat to warm the hydraulic oil.
Control Selector
Switch
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.
Preparing for Operation
Use the following procedure to prepare the aerial platform for operation.
1. Perform a prestart inspection as described in Chapter 7.
2. Place the battery disconnect switch in the on position.
3. Close and latch the doors.
4. Before painting or sandblasting make sure the sandblast protection kit and the platform control cover
are properly installed. These options, when used
properly will protect the control placards and cylinder rods from paint overspray and abrasion while
sandblasting.
Engine/Emergency
Power Switch
Emergency
Stop Button
Platform
Overload Light
Ground Operation
Switch
Start Switch
Figure 8.1 – Lower Controls
2. Press the start button until the engine starts, then
release. The engine will not start if the control selector switch is left in the lower control position for
30 seconds or longer before starting the engine. The
control selector switch must be turned back to off
before the engine will start.
3. Let the engine warm to operating temperature.
Lower Controls
The lower controls override the upper controls. This
4. Hold the ground operation switch up while operating the control toggle switches.
means that the lower controls can always be used to
operate the platform regardless of the position of the
upper control emergency stop button.
Boom, turntable, and platform functions may be operated from the lower controls. The lower controls may be
5. Hold the appropriate toggle switch in the desired
direction.
6. Release the function toggle switch to stop movement.
used for initial set up of the aerial platform, and for testing and inspection.
7. Place the ground operation switch in the off position when no functions are being operated.
Use the following procedure to operate boom, turntable,
or platform functions using the lower controls.
Upper Controls
The upper controls may be used for driving the aerial
1. Pull the emergency stop button (refer to Figure 8.1)
outward. Insert the key in the control selector and
platform and positioning the booms and platform while
on the job.
turn the switch to the lower control position.
Use the following procedure to operate machine functions using the upper controls.
1. At the lower controls, pull the emergency stop button outward. Insert the key in the control selector
and turn the switch to the upper control position.
38AB60J – 0182099EE
Page 43
Chapter 8 – Operation
2. Enter the platform and securely close the gate.
3. Attach the fall restraint lanyard to one of the anchor
points.
4. Pull the emergency stop outward (refer to Figure
8.2).
Emergency
Stop Button
Figure 8.2 – Upper Control Panel Top
5. Turn the anti-restart master switch (refer to Figure
8.3) to on and pause a few seconds while the alarm
sounds to alert others that the machine is about to
start. Turn the switch to start, then release it to on.
The engine will not start if the switch is left in the on
position for 30 seconds or longer before turning it to
start. The switch must be turned back to off before
the engine will start.
3. Step down on the platform foot switch. This switch
must be held down to operate the upper controls.
Lanyard
Anchors
Platform Foot Switch
Figure 8.4 – Platform
4. Hold the appropriate control in the desired direction. Always look in the direction of movement.
5. Gradually turn the boom speed knob to control the
riser boom, jib boom, main boom extend and platform level function speeds.
6. Releasing the control to its neutral position, or releasing the foot switch 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 tipover accident. Do not drive an elevated aerial platform on soft, uneven, or sloping surfaces. Do not
drive the machine on grades that exceed 20 percent.
For operation on grades up to 20 percent, it is recommended that the riser and main booms be fully lowered
Start Switch
and the jib elevated just enough to provide adequate
ground clearance. A 20 percent grade is a 61 cm (24″)
vertical rise in 3.05 m (10′) horizontal length.
Avoid driving with the platform over the front (steer) end
of the chassis. In this position the machine is difficult to
control because:
Figure 8.3 – Upper Control Panel Front
6. Let the engine warm to operating temperature.
Boom Operation
Use the following procedure to operate the turntable,
boom, or platform functions.
1. Turn the boom speed knob to slow.
• drive and steer control movements and their resulting machine movements are reversed.
• when driving fast, sudden turns or stops produce
more severe reactions to platform occupants.
• more turning space is required to prevent the platform from colliding with obstacles several feet beyond the path of the tires.
2. Place the drive/boom selector switch in the boom
position.
AB60J – 0182099EE39
Page 44
Chapter 8 – Operation
AWarning
Death or serious injury can 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.
The blue and yellow arrows on the chassis indicate the
direction the chassis will move when the drive or steer
control is moved toward the corresponding color.
When the machine is in the stowed position, with the
booms centered between the rear wheels, the direction
of drive and steer control movement corresponds with
the direction of chassis movement.
When the turntable is rotated from the stowed position,
with the booms to either side of or in front of the chassis, the direction of control movement does not correspond with the direction of chassis movement.
To avoid confusion, always drive to the work area or
move between work areas with the turntable and booms
in the stowed position. After arriving at the work area,
the booms may be positioned to the side or the front of
the chassis for final positioning. Always look in the direction of movement as indicated by the directional arrows on the chassis.
Use the following procedure to operate the drive and
steer functions.
1. Determine the desired drive range for the specific
driving conditions.
• Use high range when traveling across firm, flat,
level surfaces. High range can only be activated
when the booms are stowed. High range is for
high speed, low torque operation.
• Use low range 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.
2. Place the drive/boom selector switch in the drive
position.
3. Step down on the platform foot switch.
4. Push the drive joystick forward to move the chassis
forward, the direction of the blue arrow. Pull the joystick backward to move the chassis backward, the
direction of the yellow arrow. The drive speed is proportional to the joystick position.
6. Push the drive joystick to the right to steer to the
right, the direction of the yellow arrow. Push the joystick to the left to steer to the left, the direction of
the blue arrow.
Note
The steering wheels are not self-centering. Set the steering wheels straight ahead after completing a turn.
7. After driving to the desired location, release the foot
switch, or push the emergency stop button 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 shift the drive system to low range
before traveling over rough terrain or any sloped surface.
Drive speed ranges are interlocked through a limit switch
that senses the main boom position. When the boom is
elevated, only the slowest drive speed will work regardless of the drive range switch position.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable, or override any safety device.
Do not use the aerial platform if it drives faster than 1.1
km/h (0.7 mile per hour) [9.7 m (32 feet) in 30 seconds]
when the booms are elevated from the stowed position.
Motion Warning Alarm
The motion warning alarm sounds loud intermittent
beeps when the drive joystick is in the forward or reverse position.
Platform Overload Sensing System
All functions are stopped from the upper and lower controls, when the platform overload limit is exceeded. The
horn will sound intermittently and the red overload light
(refer to Figure 8.5) will blink until the excess load is
removed from the platform. At that time, the machine
functions are again operational.
Note
If the platform overload sensing system is tripped while
operating the machine, the emergency power system
may still be used for emergency machine operation from
either the lower or upper controls.
5. To stop drive motion, return the joystick to neutral.
40AB60J – 0182099EE
Page 45
Chapter 8 – Operation
Platform
Overload Light
Machine/
Generator Switch
Figure 8.5 – Upper Control Panel
If the platform becomes significantly overloaded, or if
an upward force on the platform exceeds approximately
445 N (100 lb), the system will enter into error mode,
stopping all functions from the upper and lower controls.
The horn will then sound constantly and the overload
light will stay illuminated at the upper and lower controls
(refer to Figures 8.5 and 8.6).
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover accident. Do not exceed the capacity values
indicated on the platform rating placard.
The overload sensing system is not active when the machine is being driven with the main boom below horizontal and fully retracted. This allows the machine to be
driven without the system sensing an overload due to
rough ground conditions.
To eliminate repeated tripping of the system during machine operation, there is a five second delay in machine
functions following:
• starting the engine.
• placing the drive/boom selector switch in the boom
position when the main boom is below horizontal
and fully retracted.
• removing excess load from the platform.
Four Wheel Drive
The machine may be equipped with a four wheel drive
system. This system operates full time and requires no
action by the operator.
Platform
Overload Light
Figure 8.6 – Lower Controls
The system will remain in error mode until the excess
load is removed from the platform and the emergency
stop button or start switch is cycled off and back on,
resetting the system. At that time, the machine functions are operational.
Four wheel drive machines have a “4x4” decal on each
side of the chassis and all four of the wheel hubs are
drive hubs and look the same.
AC Generator
The generator supplies power to the electrical outlet only
when the engine is running and the machine is stationary. The machine functions will not operate when the
machine/generator selector switch is in the generator
position.
ACaution
Cold hydraulic oil does not flow well and may produce improper generator output voltage. Improper
outlet voltage can damage some electrical power
tools and equipment. Warm the hydraulic oil before
operating the generator.
Do not operate the generator unless the hydraulic oil
temperature is at least 38°C (100°F). Refer to Cold
Weather Start-Up for a hydraulic oil warm-up procedure.
Start the engine and place the machine/generator selector switch (refer to Figure 8.7) in the generator position.
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Chapter 8 – Operation
Driving Lights
The optional driving lights are for use in dimly lit areas
and are not intended for driving on public roadways.
There are two headlights at the front of the chassis and
two blinking taillights at the rear of the chassis.
Machine/Generator Switch
Figure 8.7 – Upper Control Panel Front
The engine will run at high idle while the generator is
operating. The generator will continue to operate as long
as the engine is running and the switch is in the generator position.
Air Line
The optional air line may be used to conduct air for tool
operation at the platform. The input connector is at the
rear of the chassis and the output connector is at the
platform on the rotator guard. The maximum working
pressure of the line is 1,723 kPa (250 psi).
The air line may be used to conduct fluids such as water or antifreeze. Contact Snorkel for compatibility information before using the air line to conduct other fluids.
The lights are operational when the battery disconnect
switch and the master switch are turned on.
Note
Working with the driving or platform work lights on, while
the engine is off, can discharge the batteries enough
that the engine will not start or the emergency power
system will not operate. If the engine cannot be left running while the lights are on, start and run the engine for
at least 15 minutes each hour.
Platform Work Lights
The optional platform work lights are located on the top
rail of the platform. The direction a light points can be
adjusted by using two 1/2″ wrenches to loosen the clamp
below the light.
The lights are operational when the upper controls emergency stop button is pulled up and the anti-restart master switch is turned on.
The engine speed increases to high idle when the platform work lights are turned on.
ACaution
Fluid in the air line can damage some air tools or
freeze and damage the line. Drain and blow out the
air line after using it to conduct fluids.
Use the following procedure to drain the air line.
1. Close the input connector on the chassis.
2. Open the output connector at the platform.
3. Raise the boom slightly above horizontal.
4. Open the input connector on the chassis.
5. Allow the fluid to drain from the line.
6. Lower the boom and close both connections.
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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
The properly stowed position is shown in Figure 9.1.
Figure 9.1 – Stowed Position
Use the following procedure to properly stow the aerial
platform.
Transporting
The aerial platform may be moved on a transport vehicle. Depending on the particular situation, the aerial
platform may be driven, 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 tipover accident. Do not drive on ramps that exceed 20
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 20 percent grade capability of
the aerial platform.
A 20 percent grade is a 61 cm (24″) vertical rise in 3.05
m (10′) horizontal length.
Use a winch to load and unload the aerial platform on
ramps that exceed 20 percent grade. A winch may also
be used when conditions of the ramp could cause driving to be hazardous.
1. Rotate the platform so it is perpendicular to the end
of the boom.
2. Fully retract the tip boom and then fully lower the
riser and main booms.
3. Lower the jib boom until the foot on the jib is near
the ground to allow for exiting the platform
4. Center the booms between the rear wheels.
5. If the engine has just been under load and is hot,
set the throttle switch to low and let the engine idle
for five minutes.
6. Turn the start switch off and place the platform control box cover over the upper controls if the machine
is equipped with that option.
7. Push the lower controls emergency stop button inward. Turn the control selector switch off and remove the key.
8. Turn the battery disconnect switch off.
9. Close and latch the cowling doors.
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 choosing the
proper method of transportation, and the proper selection and use of transportation and tie-down devices,
making sure the equipment used is capable of supporting the weight of the aerial platform and that 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.
1. Locate the transport vehicle so it is in a straight line
with the loading ramp.
2. Chock the vehicle wheels so it cannot roll away from
the ramp while the machine is loaded.
3. Remove any unnecessary tools, materials, or other
loose objects from the platform.
4. 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.
5. Rotate the platform so it is perpendicular to the
boom.
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Chapter 9 – Stowing and Transporting
6. Retract the booms and fully lower the main boom.
Raise the jib so it is horizontal.
7. Rotate the turntable slightly to the side so you can
see the front wheels.
8. Verify that the machine wheels, loading ramps, and
transport vehicle are aligned.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tipover accident. Set the drive range to low before driving up or down a grade.
9. Place the drive range switch in the low position.
10. Drive the aerial platform onto the transport vehicle
in a straight line through the grade transitions with
minimal turning.
11. Rotate the turntable to align the main boom between
the rear wheels.
Tie-Down/Lifting Lugs
Figure 9.2 – Front Tie-Down/Lifting Lugs
6. At each drive wheel, remove the two bolts from the
disconnect plate (refer to Figure 9.3). Turn the plate
over so the nipple points inward. Reinstall the two
bolts.
12. When driving down the ramp, always back the machine with the platform on the downhill side only.
Winching
Use the following procedure to winch the aerial platform
onto the transport vehicle.
1. Locate the transport vehicle so the aerial platform
will not roll forward after it is loaded.
2. Remove any unnecessary tools, materials, or other
loose objects from the platform.
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.
4. Properly stow the aerial platform.
5. Attach the winch to the tie-down lugs (refer to Figure 9.2) on the front of the chassis.
Bolt
Disconnect Plate
Figure 9.3 – Drive Wheel
7. Use the winch to position the aerial platform on the
transport vehicle.
AWarning
The aerial platform is free to move when the drive
hubs are disabled. Death or serious injury can result. Re-enable the drive hubs before operating the
aerial platform.
8. At each drive wheel, remove the two bolts and return the plate to its original position as shown in Figure 9.3.
9. Start the engine and operate the drive control in forward and reverse several times to engage the drive
hubs.
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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 to the booms, turntable, or platform.
Chapter 9 – Stowing and Transporting
AWarning
The potential for an accident increases when the
aerial platform is lifted using improper equipment
and/or lifting techniques. Death or serious injury can
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. Lifting devices include the hoist or crane, chains, straps, cables, hooks,
sheaves, shackles, slings, and other hardware used to
support the machine. The gross vehicle weight is
stamped on the serial number placard and is listed in
Chapter 2.
The user assumes all responsibility for making sure the
equipment used is capable of supporting the weight of
the aerial platform and that 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.
Note
The lifting lugs at the rear of the chassis are farther apart
than those at the front. Rotating the turntable 180° will
place the counterweight at the rear of the chassis. This
will reduce the number of spreader bars needed by one
and sometimes two.
Tie-Down/Lifting Lugs
Figure 9.4 – Rear Tie-Down/Lifting Lugs
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.
Do not run the sling cable through the lifting lugs.
Cable damage and/or failure can result from the
cable contacting the sharp corners of the lug. There
is no effective way of putting a corner protector in
the hole of the lifting lug.
5. Use spreader bars of sufficient length to keep the
chains, straps, or cables from contacting the turntable or booms. When using cables, use rigid corner protectors at any point where the cable contacts
sharp corners to prevent damaging the cable. Careful rigging of the spreaders is required to prevent
machine damage.
2. Inspect the lifting lugs (refer to Figures 9.2 and 9.4)
to make sure they are free of cracks, rust, and are
in good condition. Have any damage repaired by a
qualified service technician before attempting to
hoist the machine.
AB60J – 0182099EE45
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. Raise the main boom about 0.3 m (1′).
3. Place a wood block under the rotator pylon. Lower
the boom so the pylon rests on the wood block.
4. Remove all personnel, tools, materials, or other
loose objects from the platform.
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Chapter 9 – Stowing and Transporting
5. Turn the start switch off and place the platform control box cover over the upper controls if the machine
is equipped with that option.
6. Push the lower controls emergency stop button inward. Turn the control selector switch off and remove the key.
7. Turn the battery disconnect switch off.
8. Close and latch the cowling doors.
9. Use wire-ties to fasten the platform gate to the guardrails to prevent the gate from bouncing. Also, use
wire-ties to fasten the platform foot switch to the platform floor.
10. Use a nylon strap to securely fasten the platform
against the wood block. Thread the strap over the
toeboard as shown in Figure 9.5.
Figure 9.5 – Platform
ACaution
Ratchets, winches, and come-alongs can produce
enough force to damage machine components. Do
not over tighten the straps or chains when securing
the aerial platform to the transport vehicle.
11. Use chains or straps to securely fasten the aerial
platform to the transport vehicle using the tie-down
lugs as attachment points. Proper tie-down and hauling are the responsibility of the carrier.
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Chapter 10 – Emergency Operation
If the main hydraulic system fails, the aerial platform
may be lowered and stowed using the emergency power
system. The main boom may be lowered using the emergency lowering knob. The machine may be towed if the
drive system fails. Refer to Emergency Power System,
Emergency Lowering, or Towing for the appropriate procedure.
Emergency Power System
The emergency power system can be used to operate
the machine from the lower or upper controls.
ACaution
The emergency power system is for emergency lowering and stowing only. The length of time the pump
can be operated depends on the capacity of the battery. Do not use this system for normal operation.
Only use the emergency power system if the main power
system fails.
Emergency
Stop Button
Control Selector
Switch
Engine/Emergency
Power Switch
Ground Operation
Switch
Lower Controls
Use the following procedure to operate the machine using the emergency power system from the lower controls.
1. Place the battery disconnect switch in the on position (refer to Figure 10.1).
Battery Disconnect Switch
Figure 10.1 – Battery Disconnect Switch
2. Place the key in the control selector switch (refer to
Figure 10.2) and turn the control switch to the lower
control position.
3. Pull the emergency stop button outward.
4. Hold the ground operation switch in the on position
while holding the engine/emergency power switch
down in the emergency power position.
Start Switch
Figure 10.2 – Lower Controls
5. Hold the appropriate function toggle switch in the
desired direction.
Upper Controls
For the upper controls to be operational:
• the battery disconnect switch must be in the on position.
• the emergency stop button at the lower controls must
be in the on position.
• the controls selector switch at the lower controls
must be in the upper controls position.
Use the following procedure to operate the machine using the emergency power system from the upper controls.
1. Pull the emergency stop button outward (refer to
Figure 10.3).
2. Turn the start switch on.
3. Place the drive/boom selector switch in the appropriate position.
4. Step down on the platform foot switch (refer to Figure 10.4).
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Chapter 10 – Emergency Operation
Emergency Stop
Platform Foot
Switch
Top
Engine/Emergency
Power Switch
Start Switch
Drive/Boom
Selector
Front
Figure 10.3 – Upper Controls
Riser Boom
Use the following procedure to manually lower the riser
boom.
1. Slowly turn the knob (refer to Figure 10.5) to open
the bleed down valve. Control the rate of descent
by turning the knob.
Figure 10.4 – Platform Foot Switch
5. Hold the engine/emergency power switch in the
emergency power position.
6. Hold the appropriate function toggle switch in the
desired direction.
Emergency Lowering
The riser and main booms can be lowered in an emergency using their respective emergency lowering knobs.
The emergency lowering knobs are at the base of the
lift cylinders. The emergency lowering knobs allow the
booms to be lowered only. Only use this method if the
engine will not start and the emergency power system
will not work.
ADanger
Pinch points exist between boom components and
between the booms and turntable. Death or serious
injury will result if the booms or platform lowers onto
personnel. Make sure all personnel stand clear while
lowering the booms.
Emergency
Lowering Knob
Inside Turntable
Figure 10.5 – Riser Boom
Emergency Lowering Knob
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
2. Turn the knob to close the cylinder bleed down
valve.
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Chapter 10 – Emergency Operation
Main Boom
Use the following procedure to manually lower the main
boom.
1. Slowly turn the knob to open the bleed down valve
on the main boom lift cylinder (refer to Figure 10.6).
Control the rate of descent by turning the knob.
Emergency
Lowering Knob
Figure 10.6 – Main Boom
Emergency Lowering Knob
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
2. Turn the knob to close the cylinder bleed down valve.
ADanger
Pinch points may exist between machine components. Death or serious injury will result from becoming trapped between components. Do not attach
the tow bar to the tow vehicle until the counterweight
is to the side of the chassis.
2. Rotate the turntable, until the counterweight is to the
side of the chassis, to allow room to attach the tow
bar.
3. Attach the tow bar to the front steering arm with the
tow pin and snap pin.
4. Attach the tow bar to the tow vehicle.
5. Rotate the turntable so the counterweight is back at
the front of the chassis. Raise the platform about 1
m (3′) above the ground.
6. Shut the engine off and turn the battery disconnect
switch off.
7. At each drive wheel, remove the two bolts from the
disconnect plate (refer to Figure 10.7). Turn the plate
over so the nipple points inward. Reinstall the two
bolts.
Bolt
Disconnect Plate
Towing
The aerial platform may be towed at slow speeds using
the optional tow kit. The tow vehicle must have sufficient capacity to safely tow and stop itself and the aerial
platform on the steepest grade and type of surface that
may be encountered. Refer to Chapter 2 for the gross
vehicle weight of the aerial platform.
AWarning
The aerial platform is free to move when the drive
hubs are disabled. Death or serious injury can result. Securely fasten the tow vehicle to the aerial
platform before disabling the drive hubs.
Use the following procedure to manually disengage the
drive hubs and tow the machine.
1. With the machine in the stowed position, remove
the tow bar from the storage cradles at the rear of
the chassis and lay the tow bar near the front of the
chassis.
Figure 10.7 – Drive Wheel
8. Pull the steering float valve knob out. The knob is
located behind the rear door on the right side of the
turntable next to the fuel tank.
9. Do not exceed 16 km/h (10 mph) when towing. Use
caution when traveling around a curve or when turning a corner. If the tow bar contacts the chassis the
steering mechanism might be damaged or the tow
vehicle and the aerial platform could jackknife.
AWarning
The aerial platform is free to move when the drive
hubs are disabled. Death or serious injury can result. Re-enable the drive hubs before operating the
aerial platform.
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Chapter 10 – Emergency Operation
10. Push the steering float valve knob in.
11. At each drive wheel, remove the two bolts and return the plate to its original position as shown in Figure 10.7.
12. Unfasten the tow vehicle from the machine and replace the tow bar on the storage cradles.
13. Verify that the drive system operates properly.
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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
Troubleshooting Chart
Symptom
Engine will not start from lower or
upper controls.
Possible Cause
Out of fuel. The engine will crank,
but will not start.
Engine is cold.
High engine temperature.
action listed, stow the machine and remove it from service. Repairs must be made by qualified maintenance
personnel.
Corrective Action
Add correct type of fuel. Try starting the engine for 20 seconds and
then let the starter motor cool for
60 seconds. Repeat as necessary.
Cummins engine – plug the block
heater in eight hours before starting the engine.
Deutz engine – hold the manifold
heater switch on for about a minute
before starting the engine. Hold the
switch on until the engine starts.
Let engine cool. Do not restart the
engine until the cause of overheating has been corrected.
Engine will not start from lower
controls.
Low oil pressure.
Switches are set wrong. The engine
will not crank.
The control selector switch was left
in the lower control position for 30
seconds or longer before starting
the engine.
Do not try to start the engine until
the cause of low oil pressure has
been corrected. The engine can be
restarted with low oil pressure, but
it will only run a few seconds before it shuts off again.
Turn the battery disconnect switch
on and then at the lower controls:
• Turn the control selector switch
off.
• Pull the emergency stop button
outward.
• Place the control selector
switch in the lower control position.
• Wait for 5 seconds and then
press the start switch to start.
Press the start button within 30 seconds of placing the control selector
in the lower controls position.
The main system circuit breaker on
the wiring box has tripped. The engine will not crank.
AB60J – 0182099EE51
Push the main system circuit
breaker button back in. If the button
pops back out, refer the problem to
a qualified service technician.
Page 56
Chapter 11 – Troubleshooting
Symptom
Engine will not start from upper
controls.
Possible Cause
Switches are set wrong. The engine
will not crank.
Platform foot switch is activated.
Corrective Action
Turn the battery disconnect switch
on and then at the lower controls:
• Turn the control selector switch
off.
• Pull the emergency stop button
outward.
• Place the control selector switch
in the upper control position.
From the upper controls:
• Turn the start switch off.
• Pull the emergency stop button
outward.
• Place the start switch in the on
position for 5 seconds and the
then turn the switch to start.
Do not step on foot switch while starting the engine.
Engine dies when the control selector switch at the lower controls
is placed in the platform position.
Constant tone alarm sounds
while the engine is running.
The start switch was left in the on
position for 30 seconds or longer before turning it to start.
The main system circuit breaker on
the upper control panel or wiring box
has tripped. The engine will not
crank.
Upper controls are not set-up properly.
High engine temperature.
Low oil pressure.
No alternator current/broken fan belt.
Turn the start switch back to off, then
to start within 30 seconds.
Push the main system circuit breaker
button back in. If the button pops
back out, refer the problem to a qualified service technician.
At the upper controls, pull the emergency stop button upward and turn
the anti-restart master switch on.
Lower the platform and reduce the
engine speed to idle for five minutes.
Turn the engine off and let it cool.
Do not restart the engine until the
cause of overheating has been corrected.
Lower the platform and turn the engine off. Do not restart the engine
until the cause of low oil pressure
has been corrected.
Turn the engine off. Do not restart
the engine until the cause of no alternator current has been corrected
or the fan belt is replaced.
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Chapter 11 – Troubleshooting
Symptom
Constant tone alarm sounds and
engine shuts off.
Horn is sounding intermittently
and the overload light is flashing.
Horn is sounding constantly and
the overload light is on.
Platform overload sense system
does not work while operating the
upper controls.
Possible Cause
High engine temperature.
Low oil pressure.
The load in the platform is greater
than the rated capacity.
The platform overload system is in
error mode.
Drive/boom selector switch is in the
drive position and the main boom is
below horizontal.
Corrective Action
Let the engine cool. Do not restart
the engine until the cause of overheating has been corrected.
Do not restart the engine until the
cause of low oil pressure has been
corrected. The engine can be restarted with low oil pressure, but it
will only run a few seconds before it
shuts off again.
Remove load from the platform until
the alarms stop.
Remove load until at or below rated
capacity. Cycle machine power off,
then on. If alarm continues, system
may need recalibration.
Normal operation. The platform overload system is inactive while driving
with the booms in the stowed position to prevent accidental activation
due to rough terrain.
Boom functions do not immediately return when switching from
drive to boom. There is a delay in
boom functions after switching
the drive/boom switch to the
boom position after driving the
machine with the boom below
horizontal.
All functions stop working.
System needs calibration.
Platform overload system delay.
Low fluid level in reservoir.
Engine or pump failure.
Circuit breaker is tripped.
Electrical system malfunction.
Platform overload sensor is tripped.
The horn is sounding and red overload light is blinking.
Refer the problem to a qualified service technician.
Normal operation. The system includes a 5 second delay to eliminate
rapid stop and restart of movements
if the overload system trips during
operation.
Check fluid level. Add correct type
of fluid if necessary.
Manually stow the machine using the
emergency power system or the
emergency lowering knob.
Push circuit breaker button in to reset.
Manually lower the boom using the
emergency lowering knob.
Remove weight from the platform until the load is at or below rated capacity.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Remove weight from the platform until the load is at or below rated capacity. Cycle machine power off,
then on. If alarm continues, system
may need recalibration.
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Chapter 11 – Troubleshooting
Symptom
Lower controls do
not work.
Upper controls do not work.
Possible Cause
Battery disconnect switch turned off.
Emergency stop switch at lower controls is pushed in to the off position.
Control selector switch is in the platform position.
Ground operation switch not held in
the on position.
Platform overload sensor is tripped.
The horn is sounding and red overload light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Battery disconnect switch turned off.
Emergency stop switch at lower and
upper controls is in the off position.
Corrective Action
Place switch in the on position.
Pull the emergency stop button out
to the on position.
Place the switch in the lower control
position.
Hold the ground operation switch in
the on position while operating the
control toggle switches.
Remove weight from the platform until the load is at or below rated capacity.
Remove weight from the platform until the load is at or below rated capacity. Cycle machine power off,
then on. If alarm continues, system
may need recalibration.
Place switch in the on position.
Place the emergency stop in the on
position.
Boom functions do not work.
Boom and drive functions seem
sluggish.
Riser boom, jib boom, tip boom,
and platform level functions do not
work from the upper controls.
Control selector switch at lower controls is in the lower control position.
Platform foot switch not engaged.
Platform overload sensor is tripped.
The horn is sounding and red overload light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
The drive/boom switch is in the drive
position.
Hydraulic oil is cold and thick.
Boom speed knob set too slow.
Place switch in the upper control position.
Step down on platform foot switch
while operating controls.
Remove weight from the platform until the load is at or below rated capacity.
Remove weight from the platform until the load is at or below rated capacity. Cycle machine power off,
then on. If alarm continues, system
may need recalibration.
Place the switch in the boom position.
Use cold weather hydraulic oil as
recommended for weather conditions. Warm oil before operating the
machine.
Turn knob toward fast.
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Chapter 11 – Troubleshooting
Symptom
Booms drift down.
Drive functions do
not work.
Possible Cause
One of the emergency lowering
valves is open.
Hydraulic system malfunction.
The drive/boom switch is in the
boom position.
Machine on too steep a grade.
Drive hubs are disengaged.
Low hydraulic system pressure.
Platform overload sensor is tripped.
The horn is sounding and red overload light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Corrective Action
Turn the emergency lowering knobs
to close the valves.
Stow the machine and do not operate until repairs are made.
Place the switch in the drive position.
Lower the booms and drive to a level
surface.
Turn drive wheel disconnect plates
around so nipples point outward.
Stow the machine and do not operate until repairs are made.
Remove weight from the platform until the load is at or below rated capacity.
Remove weight from the platform until the load is at or below rated capacity. Cycle machine power off,
then on. If alarm continues, system
may need recalibration..
Wheels will not turn when
winching.
Only slow drive speed works.
Steer wheels do not turn right or
left on machines with tow option.
Tilt alarm does not work.
Circuit breaker will not reset.
Electrical outlet does not work.
Drive hubs are engaged.
The booms are elevated. High range
not selected.
Tow kit steering float valve is open.
Booms are stowed.
Electrical circuit has not had time to
cool.
Electrical system malfunction.
Power supply not plugged in.
Machine/generator switch not in the
generator position.
Turn drive wheel disconnect plates
around so nipples point inward.
Completely lower the booms. Place
the drive range switch in the high position.
Close the steering float valve.
Normal operation. The tilt alarm is not
active until the booms are elevated.
Wait a minute or two for circuit to cool,
then push circuit breaker button in to
reset.
Do not operate machine until repairs
are made.
Plug the power cord into the powerinput connector on the generator.
With engine running, place the machine/generator switch in the generator position.
Improper AC generator output
voltage.
Hydraulic oil is cold and thick.
Use cold weather hydraulic oil as recommended. Warm oil before operating the machine.
AB60J – 0182099EE55
Page 60
Chapter 11 – Troubleshooting
Symptom
Hydraulic fluid temperature 93°C
(200°F ) or more.
Severe hydraulic leak.
Possible Cause
Prolonged boom operation or driving.
High pressure fluid return to reservoir
caused by kinked or twisted hose.
Hydraulic system component failure.
Failure of hose, tube, fitting, seal, etc.
Corrective Action
Stop operation until fluid cools.
Remove the kink or twist from the
hose. Let fluid cool before resuming
operation.
Stow the machine and do not operate
until repairs are made.
Do not operate machine until repairs
are made.
56AB60J – 0182099EE
Page 61
Appendix A – Glossary
aerial platform – a mobile device that has an adjustable position plat-
form, supported from ground level by a structure.
ambient temperature – the air temperature of the immediate environment.
ammeter – an instrument for measuring the strength of an electric current
in amperes.
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).
boom – a movable cantilever beam which supports the platform.
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.
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. Federal OSHA, ANSI, and Snorkel require
the use of additional fall protection beyond the platform guardrails on boom
supported aerial platforms.
floating turret – the structure that connects the riser boom to the main
boom.
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.
guardrail system – a vertical barrier around the platform to prevent personnel from falling.
hazardous location – any location that contains, or has the potential to
contain, an explosive or flammable atmosphere as defined by ANSI/NFPA
505.
jib – an articulating boom attached to the tip boom which increases the
overall boom reach.
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.
lower controls – the controls located at ground level for operating some
or all of the functions of the aerial platform.
main boom – a boom assembly located between the floating turret and
the jib boom.
manufacturer – a person or entity who makes, builds or produces an
aerial platform.
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.
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.
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.
rated work load – the designed carrying capacity of the aerial platform as
specified by the manufacturer.
riser boom – an articulating boom section. The riser boom is between the
turntable and the main boom.
stow – to place a component, such as the platform, in its rest position.
tip boom – a telescopic boom section that extends and retracts from
within the main boom. The tip boom is nearest the platform.
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.
turntable – the structure above the rotation bearing which supports the
main boom. The turntable rotates about the centerline of rotation.
unrestricted rated work load – the maximum designed carrying capacity of the aerial platform allowed by the manufacturer in all operating configurations.
upper controls – the controls located on or beside the platform used for
operating some or all of the functions of the aerial platform.
wheelbase – the distance from the center of the rear wheel to the center
of the front wheel.
working envelope – the area defined by the horizontal and vertical limits
of boom travel that the platform may be positioned in.
working height – platform height plus six feet.
maximum wheel load – the load or weight that can be transmitted through
a single wheel to the floor or ground.
AB60J – 0182099EE
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Appendix A – Glossary
AB60J – 0182099EE
Page 63
Product Warranty
1. Snorkel warrants each new machine manufactured and sold by it to be free from defects in material
and workmanship for a period of one (1) year from date of delivery to a Customer. The warranty will
apply subject to the machine being operated in accordance with the rules, precauons, instrucons
and maintenance requirements outlined in the Snorkel Operator's and Repair Parts Manuals.
2. Snorkel further warrants the structural components, specically 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 addional period of four (4) years. Any such part or parts which,
upon examinaon by the Snorkel Warranty Department, are found to be defecve will be replaced or
repaired by Snorkel through its local Authorised Dealer. The structural warranty specically excludes
adverse aects on the machine structure arising from damage, abuse or misuse of the equipment.
3. Machines may be held in an authorised Distributor stock for a maximum of six (6) months from the
date of shipment from Snorkel, before the warranty period is automacally iniated.
4. It is the responsibility of the Distributor to complete and return a Predelivery/Warranty registraon,
before the act of rental/loan/demonstraon of the machine or delivery to an end user.
5. The Customer and Dealer shall not be entled to the benets of this warranty and Snorkel shall have
no obligaons here under unless the “Predelivery and Inspecon Record” has been properly completed and returned to the Snorkel Warranty department within een (15) days aer delivery of the
Snorkel product to the Customer or Dealer’s demonstraon/rental eet. Snorkel must be noed, in
wring, within ten (10) days, of any machine sold to a Customer from a Dealer’s rental eet during
the warranty period.
6. Any part or parts which upon examinaon by the Snorkel Product Support Department are found to
be defecve within the specied warranty period, will be replaced or repaired at the sole discreon of
Snorkel, through Snorkel directly or an authorised Distributor, at no charge. Any parts replaced under
warranty must be original Snorkel parts obtained through Snorkel directly or an authorised Distributor, unless expressly agreed otherwise in wring and in advance by Snorkel’s Warranty Department.
7. All parts being claimed under warranty must be held available for return and inspecon 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. Aer 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 inspecon within a period of 14 days will
result in the claim being automacally rejected in full. Materials returned for warranty inspecon
must have the following procedure:
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. Any item(s) returned for warranty by any other means maybe refused and returned,
8. At the direcon 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 inspecon.
An RMA (Returns Material Authorisaon) must be requested from Snorkel Warranty Department, a
copy to be placed with the returning component part(s).
9. All warranty replacement parts will be shipped freight prepaid (standard charge) from the Snorkel
Parts/Service Department or from the Vendor to Dealer or Customer.
10. All warranty claims are subject to approval by Snorkel Service Department. Snorkel reserves the right
to limit or adjust claims with regard to defecve parts, labor or travel me based on usual and cus-
tomary guidelines.
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 a Distributor 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.
CLAIM PROCEDURE
The Snorkel Warranty Department must be notied within (48) forty-eight hours of any possible warranty situation
during the applicable warranty period. Personnel performing major warranty repair or parts replacement must obtain
specic approval by the Snorkel Warranty Department prior to performing the warranty repair or replacement.
When a Distributor/Customer perceive a warranty issue to exist the following steps must be adhered to:
All warranty claims must be submitted within 30 days of the date of the machine repair
All correspondence in respect of the claim to be on an ofcial Snorkel warranty claim form as supplied by
Snorkel’s Warranty Department
Allocate a warranty claim number to the repair
Place a purchase order for genuine Snorkel replacement parts
Snorkel to dispatch parts via the requested method (in line with the required response time)
Conrmation that a qualied technician is available to replace the part and that this person has been ac-
cepted by Snorkel to carry out such work under the warranty of the machine. Failure to do this may nullify
the warranty.
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 if possible photographs taken, prior to signing acceptance of the consignment. The freight company
must be contacted by the Distributor and a damage claim registered immediately.
THIS WARRANTY EXCLUDES AND SNORKEL DOES NOT WARRANT:
1. Engines, motors, res and baeries are manufactured by suppliers to Snorkel, who furnish their own
warranty. Snorkel will, however, to the extent permied; pass through any such warranty protecon
to the Distributor/Customer.
2. Any Snorkel product which has been modied or altered outside Snorkel factory without Snorkel written approval, if such modicaon or alteraon, in the sole judgment of Snorkel Engineering and/or
Service Departments, adversely aects the stability, reliability or service life of the Snorkel product or
3. Any Snorkel product which has been subject to misuse and abuse, improper maintenance or accident.
“Misuse” includes but is not limited to operaon beyond the factory-rated load capacity and speeds.
“Improper maintenance” includes but is not limited to failure to follow the recommendaons con-
tained in the Snorkel Operator's and Repair Parts Manuals.
4. Normal wear of any Snorkel component part(s). Normal wear of component parts may vary with the
type, applicaon or type of environment in which the machine may be used; such as, but not limited
to sandblasng applicaons.
5. Roune maintenance, roune maintenance items and minor adjustments are not covered by this warranty, including but not limited to hydraulic uid, lters and lubricaon, paint and decals.
6. Any Snorkel product that has come into direct contact with any chemical or abrasive material.
7. Incidental or consequenal 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, downme of the
machine, lost me for workers, lost orders, lost rental revenue, lost prots, expenses or increased
cost. This warranty is expressly in lieu of all other warranes, representaons or liabilies of Snorkel,
either expressed or implied, unless otherwise amended in wring by Snorkel.
8. Snorkel Warranty policy does not cover any dues, taxes, environmental fees including without limitaon, disposal or handling of res, baeries and petrochemical items.
9. Item specically excluded are, fuel injectors, motor brushes, glow plugs, contactor ps and springs, oil
lters, lamp bulbs, lamp lenses, O-rings, coolants, lubricants and cleaning material.
10.
Failure of replacement parts due to fault misdiagnosis or incorrect ng by the Distributor/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.
The Customer shall make all warranty claims
the
Distributor
, contact the Snorkel Service Department for further assistance.
through Snorkel directly or an Authorised Distributor
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.