Skyjack SJ12 User manual

MODELS SJ 12
Operating Manual
Vertical Mast Series (ANSI/CSA)
Part No. 155169AB-A September 2010

Skyjack Service Center 3451 Swenson Ave. St. Charles, Illinois, 60174 USA
Phone: [phone]
Toll Free: 1-800-275-9522
Fax: [phone]
Email: [email protected]om
Parts (North America)
Toll Free: 1-800-965-4626
Toll Free Fax: [phone]
E-mail: [email protected]
Parts & Service (Europe) Unit 1 Maes Y Clawdd, Maesbury Road Industrial Estate
Oswestry, Shropshire SY10 8NN UK
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Skyjack Asia Pacific
Singapore
Phone: [phone]
Fax: [phone]
E-mail: [email protected]

Vertical Mast Series
December 2007 Page 3
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DANGER
DANGER indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury. It may also be used to alert against
unsafe practices.
IMPORTANT
IMPORTANT indicates a procedure essential for safe operation and which,
if not followed, may result in a malfunction or damage to the aerial platform.
This document is a translation from English.
In case of discrepancy between the English document and this document, the English
version prevails.
The Safety Alert Symbol identifies important
safety messages on aerial platform, safety signs
in manuals or elsewhere. When you see this
symbol, be alert to the possibility of personal
injury or death. Follow the instructions in the
safety message.
This Safety Alert Symbol means attention!
Become alert! Your safety is involved.

TM
Page 4 December 2007
Vertical Mast Series
Table of Contents
Section 1 - About Your Aerial Platform
Read and Heed
Aerial Platform Definition .............................................................................................................................................7
Purpose of Equipment .................................................................................................................................................7
Use of Equipment ........................................................................................................................................................7
Manual..........................................................................................................................................................................7
Operator .......................................................................................................................................................................7
Service Policy and Warranty........................................................................................................................................7
Optional Accessories ...................................................................................................................................................7
Scope of this Manual ...................................................................................................................................................7
Safety Rules
Operator Safety Reminders .........................................................................................................................................8
Electrocution Hazard ...................................................................................................................................................9
Safety Precautions .....................................................................................................................................................10
Section 2 - Operation
2.1 General ............................................................................................................................................................15
2.1-1 Operator Qualifications .....................................................................................................................15
2.1-2 Operator’s Responsibility for Maintenance ......................................................................................15
2.1-3 Maintenance and Inspection Schedule ............................................................................................15
2.1-4 Owner’s Inspections .........................................................................................................................15
2.2 Major Components .........................................................................................................................................16
2.3 Major Assemblies ...........................................................................................................................................17
2.3-1 Base .................................................................................................................................................17
2.3-2 Lifting Mechanism.............................................................................................................................17
2.3-3 Platform .............................................................................................................................................17
2.4 Serial Number Nameplate ..............................................................................................................................17
2.5 Component Identification ...............................................................................................................................18
2.5-1 Main Power Disconnect Switch .......................................................................................................18
2.5-2 Brake System....................................................................................................................................18
2.5-3 Base Control Console.......................................................................................................................18
2.5-4 Emergency Lowering System...........................................................................................................19
2.5-5 Battery Charger.................................................................................................................................19
2.5-6 Hourmeter/Circuit Breaker/Diagnostic Switch..................................................................................19
2.5-7 Tilt Alarm ...........................................................................................................................................19
2.5-8 Platform Control Console .................................................................................................................20
2.5-9 AC Outlet on Platform .......................................................................................................................20
2.5-10 Manual Storage Box .........................................................................................................................20
2.5-11 Pothole Protection Device.................................................................................................................21
2.5-12 Lanyard Attachment Anchorage.......................................................................................................21
2.5-13 Platform Maintenance Lock Mechanism ..........................................................................................22

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December 2007 Page 5
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Table of Contents
Section 2 - Operation (Continued)
2.6 Operator’s Responsibility................................................................................................................................23
2.7 Visual and Daily Maintenance Inspections .....................................................................................................24
2.8 Function Tests..................................................................................................................................................29
2.9 Start Operation ................................................................................................................................................35
2.9-1 To Activate Base Control Console ....................................................................................................35
2.9-2 To Raise or Lower Platform Using Base Control Console................................................................35
2.9-3 To Activate Platform Control Console...............................................................................................36
2.9-4 To Raise or Lower Platform Using Platform Control Console ..........................................................36
2.9-5 To Drive Forward or Backward .........................................................................................................36
2.9-6 To Steer .............................................................................................................................................37
2.9-7 Shutdown Procedure ........................................................................................................................37
2.10 Loading/Unloading..........................................................................................................................................38
2.10-1 Driving ...............................................................................................................................................38
2.10-2 Lifting.................................................................................................................................................39
2.11 Winching and Towing Procedures ..................................................................................................................40
2.11-1 To Release Brakes Manually.............................................................................................................40
2.12 Emergency Lowering Procedure ....................................................................................................................41
2.13 Platform Traversing (If equipped)....................................................................................................................42
2.14 Accessing the Hydraulic/Electrical Compartment ..........................................................................................42
2.15 Battery Maintenance .......................................................................................................................................44
2.15-1 Battery Service Procedure ................................................................................................................44
2.15-2 Battery Charging Operation..............................................................................................................44
2.16 Tables...............................................................................................................................................................46
2.17 Labels ..............................................................................................................................................................52
List of Tables
2.1 Standard and Optional Features.....................................................................................................................46
2.2 Owner’s Annual Inspection Record ................................................................................................................47
2.3 Specifications and Features............................................................................................................................47
2.4 Maximum Platform Capacities (Evenly Distributed) .......................................................................................48
2.5 Floor Loading Pressure...................................................................................................................................48
2.6 Maintenance and Inspection Schedule ..........................................................................................................50
2.7 Operator’s Checklist........................................................................................................................................51

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December 2007 Page 7
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Section 1 - About Your Aerial Platform Read and Heed
SKYJACK is continuously improving and expanding product features on its equipment, therefore, specifications and
dimensions are subject to change without notice.
Aerial Platform and Mobile Elevating Work Platform Definition
A mobile device that has a positionable platform supported from ground level by a structure.
Purpose of Equipment
The SKYJACK Vertical Mast series aerial platforms are designed to transport and raise personnel, tools and
materials to overhead work areas.
Use of Equipment
The aerial platform is a highly maneuverable, mobile work station. Lifting and driving must be on a flat, level,
compacted surface.
Manual
The operating manual is considered a fundamental part of the aerial platform. It is a very important way to
communicate necessary safety information to users and operators. A complete and legible copy of this manual
must be kept in the provided weather-resistant storage compartment on the aerial platform at all times.
Operator
The operator must read and completely understand both this operating manual and the safety panel label located
on the platform and all other warnings in this manual and on the aerial platform. Compare the labels on the
aerial platform with the labels found within this manual. If any labels are damaged or missing, replace them
immediately.
Service Policy and Warranty
SKYJACK warrants each new Vertical Mast series aerial platform to be free of defective parts and workmanship for
the first 24 months. Any defective part will be replaced or repaired by your local SKYJACK dealer at no charge for
parts or labor. Contact the SKYJACK Service Department for warranty statement extensions or exclusions.
Optional Accessories
The SKYJACK aerial platform is designed to accept a variety of optional accessories.
Scope of this Manual
a. This manual applies to the ANSI/SIA, CSA version of the SJ12 Vertical Mast Series aerial platform models
listed on Table 2.1.
- Equipment identified with “ANSI” meets the ANSI SIA-A92.6-2006 standard.
- Equipment identified with “CSA” meets the CSA B354.2-01 standard.
b. CSA (Canada)
Operators are required to conform to national, territorial/provincial and local health and safety regulations
applicable to the operation of this aerial platform.
c. ANSI/SIA (United States)
Operators are required by the current ANSI/SIA A92.6 standards to read and understand their responsibilities
in the manual of responsibilities before they use or operate this aerial platform.
1

TM
Page 8 December 2007
Vertical Mast Series
Safety Rules Section 1 - About Your Aerial Platform
WARNING
Failure to comply with your required responsibilities in the use and operation of the aerial platform
could result in death or serious injury!
Operator Safety Reminders
A study conducted by St. Paul Travelers showed that most accidents are caused by the failure of the operator to
follow simple and fundamental safety rules and precautions.
You, as a careful operator, are the best insurance against an accident. Therefore, proper usage of this aerial
platform is mandatory. The following pages of this manual should be read and understood completely before
operating the aerial platform.
Common sense dictates the use of protective clothing when working on or near machinery. Use appropriate safety
devices to protect your eyes, ears, hands, feet and body.
Any modifications from the original design are strictly forbidden without written permission from SKYJACK.

Vertical Mast Series
December 2007 Page 9
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Section 1 - About Your Aerial Platform Safety Rules
Electrocution Hazard
This aerial platform is not electrically insulated. Maintain a Minimum Safe Approach Distance (MSAD) from energized
power lines and parts as listed below. The operator must allow for the platform to sway, rock or sag. This aerial
platform does not provide protection from contact with or proximity to an electrically charged conductor.
Per ANSI A92.6-2006 8.10(7)
“The operator shall perform only that work for which he or she is qualified, in compliance with all applicable
safety related work practices intended to prevent electric shock covered by the Code of Federal Regulations
(CFR) 1910.333. The operator’s level of competence shall be established only by persons qualified to do so.
Operators shall maintain the appropriate minimum approach distance (MAD) from energized power lines and parts
covered by CFR 1910.333 (c).”
Unqualified persons must maintain a minimum approach distance of 10 feet from any energized power line up to
50 kV. Energized power lines over 50 kV require a greater minimum approach distance to be maintained. Refer to
CFR 1910.333.
As per CSA B354.2-01
“The operator shall maintain the minimum safe approach distance (MSAD) from energized conductors at all times
in accordance with the authority having jurisdiction.”
DO NOT USE THE AERIAL PLATFORM AS A GROUND FOR WELDING.
DO NOT OPERATE THE AERIAL PLATFORM DURING LIGHTNING OR STORMS.
Voltage Range Minimum Safe Approach Distance
(Phase to Phase) (Feet)
0 to 300V Avoid Contact
Over 300V to 50KV 10
Over 50KV to 200KV 15
Over 200KV to 350KV 20
Over 350KV to 500KV 25
Over 500KV to 750KV 35
Over 750KV to 1000KV 45
60023AD-ANSI
DANGER
FAILURE TO AVOID THIS HAZARD WILL RESULT IN DEATH OR SERIOUS INJURY!
Avoid Power Lines
Minimum Safe Approach Distance
ANSI/SIA A92.6-2006 & CSA B354.2-01 Requirements

TM
Page 10 December 2007
Vertical Mast Series
Safety Rules Section 1 - About Your Aerial Platform
Safety Precautions
Know and understand the safety precautions before going on to next section.
WARNING
Failure to heed the following safety
precautions could result in tip over,
falling, crushing, or other hazards leading
to death or serious injury.
• KNOW all national, state or territorial/provincial
and local rules which apply to your aerial platform
and job site.
• TURNmainpowerdisconnect switch “ ”offwhen
leaving the aerial platform unattended. Remove
the key to prevent unauthorized use of the aerial
platform.
• WEAR all the protective clothing and personal
safety devices issued to you or called for by job
conditions.
• DO NOT wear loose clothing,
dangling neckties, scarves,
rings, wristwatches or other
jewelry while operating this lift.
• AVOID entanglement with ropes,
cords or hoses.
• AVOID falling. Stay within the
boundaries of the guardrails.
• DO NOT raise the aerial platform
in windy or gusty conditions.
• DO NOT increase the lateral
surface area of the platform.
Increasing the area exposed
to the wind will decrease aerial
platform stability.
• DO NOT drive or elevate the
aerial platform if it is not on a
firm level surface. Do not drive
elevated near depressions
or holes of any type, loading
docks, debris, drop-offs and
surfaces that may affect the
stability of the aerial platform.
• If operation in areas
with holes or drop-offs
is absolutely necessary,
elevated driving shall not be
allowed. Position the aerial
platform horizontally only with
the platform fully lowered. After
ensuring that all 4 wheels or
outriggers (if equipped) have
contact with level firm surface,
the aerial platform can be
elevated. After elevation, the
drive function must not be
activated.
• Elevated driving must
only be done on a firm level
surface.
• DO NOT ascend or descend
a grade when elevated. When
fully lowered, ascending or
descending grades up to
maximum rated inclines listed
in Table 2.3.




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December 2007 Page 11
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Section 1 - About Your Aerial Platform Safety Rules
Safety Precautions (Continued)
Know and understand the safety precautions before going on to next section.
• DO NOT operate on surfaces not capable
of holding the weight of the aerial platform
including the rated load, e.g., covers, drains, and
trenches.
• DO NOT operate an aerial
platform that has ladders,
scaffolding or other devices
mounted on it to increase
its size or work height. It is
prohibited.
• DO NOT exert side forces on
aerial platform while elevated.
• DO NOT use the aerial
platform as a crane. It is
prohibited.
• DO NOT sit, stand or climb on
the guardrails. It is prohibited.
• DO NOT climb on base and
mast. It is prohibited.
• BE AWARE of overhead
obstructions or other possible
hazards around the aerial
platform when driving or lifting.
• DO NOT raise the aerial
platform while the aerial
platform is on a truck, fork lift
or other device or vehicle.
• BE AWARE of crushing
hazards. Keep all body parts
inside platform guardrail.
• DO NOT lower the platform
unless the area below is
clear of personnel and
obstructions.
• ENSURE that there are no personnel or
obstructions in the path of travel, including blind
spots.
• DO NOT use with improperly
inflated/damaged tires or
wheels. Tires should be
checked daily for pressure,
torn side walls and soft spots.
• DO NOT alter or disable
limit switches or other safety
devices.

TM
Page 12 December 2007
Vertical Mast Series
Safety Rules Section 1 - About Your Aerial Platform
Safety Precautions (Continued)
Know and understand the safety precautions before going on to next section.
• DO NOT use the aerial
platform without guardrails,
locking pins and the entry
gate in place.
• DO NOT exceed the rated capacity of the
aerial platform. Do make sure the load is evenly
distributed on the platform.
• DO NOT operate if aerial
platform is not working
properly or if any parts are
damaged or worn.
• DO NOT leave aerial platform
unattended with key in key
switch.
• DO NOT use under influence
of alcohol or drugs.
• DO NOT access the
h y d r a u l i c / e l e c t r i c a l
compartment while the
platform is raised.
• BE AWARE of blind spots when operating the
aerial platform.
• STUNT driving and horseplay are prohibited.
• DO NOT attempt to free a snagged platform with
lower controls until personnel are removed from
the platform.
• DO NOT position the aerial platform against
another object to steady the platform.
• DO NOT place materials on the guardrails
or materials that exceed the confines of the
guardrails unless approved by Skyjack.

Vertical Mast Series
December 2007 Page 13
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Section 2 - Operation General
Safety Precautions (Continued)
Know and understand the safety precautions before going on to next section.
Fall Protection
As per the ANSI A92.6-2006 standard, “The
guardrail system of the aerial platform provides
fall protection. If occupant(s) of the platform are
required to wear personal fall protection equipment
(PFPE), occupants shall comply with instructions
provided by the aerial platform manufacturer
(remanufacturer) regarding anchorage(s).”
If additional fall protection is required, by an
employer or the authority having jurisdiction,
Skyjack recommends the use of a fall restraint
system to keep an occupant within the confines
of the platform, and thus not expose the occupant
to any fall hazard requiring a fall arrest.
All personal fall protection equipment must
comply with applicable governmental regulations
and must be inspected and used in accordance
with the manufacturer’s recommendations.
All personal fall protection equipment must be
attached only to approved anchorage points
within the platform of the aerial platform.
WARNING
Entering and exiting the aerial platform
should only be done using the three
points of contact.
• Useonlyequippedaccessopenings.
• Enter and exit only when the aerial
platform is in the fully retracted position.
• Do use three points of contact to enter and exit
the platform. Enter and exit the platform from
the ground only. Face the aerial platform when
entering or exiting the platform.
• Three points of contact means that two hands and
one foot or one hand and two feet are in contact
with the aerial platform or the ground at all times
during entering and exiting.
WARNING
An operator should not use any aerial
platform that:
does not appear to be working properly.•
has been damaged or appears to have worn or•
missing parts.
has alterations or modifications not approved by•
the manufacturer.
has safety devices which have been altered or•
disabled.
has been tagged or locked out for non-use or•
repair.
Failure to avoid these hazards could
result in death or serious injury.
Job site Inspection
Do not use in hazardous locations.•
Perform a thorough job site inspection prior to•
operating the aerial platform, to identify potential
hazards in your work area.
Be aware of moving equipment in the area. Take•
appropriate actions to avoid collision.

Vertical Mast Series
December 2007 Page 15
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Section 2 - Operation General
2
2.0 Operation
This section provides the necessary information needed
to operate the aerial platform. It is important that the user
reads and understands this section before operating
the aerial platform.
2.1 General
In order for this aerial platform to be in good working
condition, it is important that the operator meets the
necessary qualifications and follow the maintenance
and inspection schedule referred to in this section.
2.1-1 Operator Qualifications
Only trained and authorized personnel shall• be
permitted to operate an aerial platform.
Safe use of this aerial platform requires the•
operator to understand the limitations and
warnings, operating procedures and operator’s
responsibility for maintenance. Accordingly, the
operator must understand and be familiar with this
operating manual, its warnings and instructions,
and all warnings and instructions on the aerial
platform.
The operator must be familiar with employer’s work•
rules and related government regulations and be
able to demonstrate the ability to understand and
operate this make and model of aerial platform in
the presence of a qualified person.
2.1-2 Operator’s Responsibility for
Maintenance
WARNING
Maintenance must be performed by
trained and competent personnel who are
familiar with mechanical procedures.
Death or serious injury could result from
the use of an aerial platform that is not
properly maintained or kept in good
working condition.
The operator must be sure that the aerial platform•
has been properly maintained and inspected
before using it.
The operator must perform all the daily inspections•
and function tests found in Table 2.6, even if
the operator is not directly responsible for the
maintenance of this aerial platform.
2.1-3 Maintenance and Inspection Schedule
The inspection points covered in• Table 2.6 indicate
the areas of the aerial platform to be maintained or
inspected and at what intervals the maintenance
and inspections are to be performed.
The actual operating environment of the aerial•
platform may affect the maintenance schedule.
WARNING
Use original or manufacturer-approved
parts and components for the aerial
platform.
2.1-4 Owner’s Inspections
It is the responsibility of the owner to arrange daily,
quarterly (or 150 hours) and annual inspections of the
aerial platform. Refer to Table 2.6 for recommended
maintenance and inspection areas and intervals. A
record of annual inspection is kept on a label located
on the mast. Refer to Table 2.2 in this manual.

TM
Page 16 December 2007
Vertical Mast Series
Major Components Section 2 - Operation
2.2 Major Components
SKYJACK Vertical Mast Series Aerial Platform
Platform Control Console
Platform
Platform Repositioning Handle
Base
Foot Pedal
Hydraulic/Electrical
Compartment
Access Door
Mast - Lifting Mechanism

Vertical Mast Series
December 2007 Page 17
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Section 2 - Operation Major Assemblies
2.3 Major Assemblies
The aerial platform consists of three major assemblies:
base, lifting mechanism and platform.
2.3-1 Base
The base is a rigid, one-piece weldment which
contains hydraulic, electrical components and four
(4) 6 volt batteries. The front wheels are driven by
hydraulic motors, steerable by a hydraulic cylinder.
The rear wheels are non-driven, with spring-applied
hydraulically released brakes.
2.3-2 Lifting Mechanism
The lifting mechanism is constructed of formed
steel. The Mast assembly is raised and lowered by
a series of chains and a single-acting hydraulic lift
cylinder with holding valves. A pump, driven by an
electric motor, provides hydraulic power to the lift
cylinders.
2.3-3 Platform
The platform is constructed of a tubular support
frame, a skid-resistant “diamond plate” deck
surface and 43.25” fixed guardrails with 6” toe
boards and mid-rails. The platform can be entered
from the front through a spring-returned gate with
latch.
2.4 Serial Number Nameplate
The serial number nameplate, located at the rear of the
aerial platform, lists the following:
Model number•
Serial number•
Aerial platform weight•
Maximum drivable height•
Maximum capacities•
Maximum number of persons permissible on the•
platform
Voltage•
System pressure•
Lift pressure•
Maximum platform height•
Maximum wheel load•
Date manufactured•

TM
Page 18 December 2007
Vertical Mast Series
Component Identification Section 2 - Operation
2.5 Component Identification
The following descriptions are for identification,
explanation and locating purposes only.
2.5-1 Main Power Disconnect Switch
This switch is located at the rear of the base.
1
Figure 2-1. Main Power Disconnect Switch
1. Main Power Disconnect Switch - This switch,
when in “ ” off position, disconnects power to
all circuits. Switch must be in “ ” on position to
operate any circuit. Turn switch “ ” off when
transporting aerial platform.
2.5-2 Brake System
The brake system is located at the rear of the base.
The brakes must be manually disengaged before
pushing, winching or towing. Refer to Section 2.11-1
for procedure on how to release brakes manually. The
system contains the following controls:
2
1
Figure 2-2. Disc Brake System
1. Brake hand pump
2. Brake auto reset valve plunger
2.5-3 Base Control Console
This control console is located at the rear of the base.
It contains the following controls:
2
1
3
Figure 2-3. Base Control Console
1. Lower/Neutral/Raise Switch - This switch controls
“
156317AA
ZZ
” raising or “
156317AA
ZZ
” lowering of platform.
2. Off/Platform/Base Key Switch - This three-way
switch allows the operator to turn “ ” off power
to aerial platform or to activate either “
156317AA
ZZ
” platform
or “
156317AA
ZZ
” base controls.
3. Emergency Stop Button - This button “ ”,
when depressed, disconnects power to the control
circuit.

Vertical Mast Series
December 2007 Page 19
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Section 2 - Operation Component Identification
2.5-4 Emergency Lowering System
This emergency lowering system allows platform
lowering in the event of an emergency or an electrical
system failure.
1. Remove any obstructions from a lowering
platform.
2. Extension platform may need to be retracted or
aerial platform may need to be moved to clear
obstruction. Refer to Section 2.11 for winching
and towing procedures.
1
Figure 2-4. Emergency Lowering System
3. Locate emergency lowering valve (item 1) at
the base of the lift cylinder, pull out and hold
emergency lowering valve (item 1) to lower
platform.
2.5-5 Battery Charger
The charger is located at the front of the base. Refer to
Section 2.15-2 for battery charging operation.
Figure 2-5. Battery Charger
2.5-6 Hourmeter/Circuit Breaker/Diagnostic
Switch
This assembly is located inside the hydraulic/electrical
compartment.
23 1
Figure 2-6. Hourmeter/Circuit Breaker/Diagnostic
Switch
1. This gauge records accumulated operating time
of the aerial platform.
2. In the event of power overload or positive circuit
grounding, the circuit breaker pops out. Push
breaker back in to reset.
WARNING
Diagnostic switch should not be used
while any person are in the platform.
3. Diagnostic switch is used to check machine
functionality while the machine is in the service
position.
2.5-7 Tilt Alarm
The aerial platform is equipped with a device which
senses when the aerial platform is out of level in any
direction. When activated, it disables drive and lift
functions of the aerial platform and an alarm produces
an audible sound.
WARNING
If the tilt alarm sounds and the platform
does not, or only partially raises,
immediately lower the platform completely
and ensure that the aerial platform is on
a firm level surface.

TM
Page 20 December 2007
Vertical Mast Series
Component Identification Section 2 - Operation
2.5-8 Platform Control Console
This removable control console is mounted at the right
front of the platform. It contains the following controls:
1
2
3
54
Figure 2-7. Platform Control Console
1. Lift/Drive/Steer Enable Trigger Switch -This
momentary “ ” switch energizes the controller.
It must be held depressed continuously while
engaging either the lift/drive or steer functions.
2. Lift/Drive/Steer Controller - This one-hand lever
controls lift/drive and steer motions. Internal
springs return it to neutral when controller is
released.
3. Emergency Stop Button/Operation Light - This
button “ ”, when depressed, disconnects power
to the control circuit. The operation light indicates
upper control availability. It glows when both
emergency stop buttons on the platform control
console and the base control console are pulled
out.
4. Horn Pushbutton - This “ ” pushbutton sounds
an automotive-type horn.
5. Lift/Off/Drive Switch - Selecting “ ” off position
disconnects power from both lift and drive circuits.
Selecting “ ” lift position energizes the lift circuit.
Selecting “ ” drive position energizes the drive
circuit.
2.5-9 AC Outlet on Platform
This outlet is a source of AC power on the platform.
Figure 2-8. AC Outlet on Platform
2.5-10 Manual Storage Box
This weather-resistant box is mounted on the Mast. It
contains operating manual and certificate.
1
Figure 2-9. Manual Storage Box
1. The operating manual for this make and model of
aerial platform must remain with the aerial platform
and should be stored in this box.

Vertical Mast Series
December 2007 Page 21
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Section 2 - Operation Component Identification
2.5-11 Pothole Protection Device
1
Figure 2-10. Pothole Protection Device
1. Pothole Protection Device -This device consists
of a set of mechanically actuated steel weldments
located under the base. These weldments will
automatically rotate for reduced ground clearance
when elevating the aerial platform. If the pothole
protection device has not fully lowered, the drive
function will be disabled.
WARNING
Crushing Hazard - Personnel on ground
must stay clear of pothole protection
device.
WARNING
Do not drive elevated in areas where
electrical cords or debris are in the path
of travel.
Maintenance of the Pothole
Protection Device
As with all safety devices, periodic inspection and
maintenance is required to ensure the proper
operation of the pothole protection device.
This mechanism is designed to reduce ground
clearance and assist in the stability of an elevated
aerial platform in the event the aerial platform
encounters a “drop-off” or “pothole.” The nature
of this safety feature relies on maintaining a
consistent ground clearance, therefore, if the aerial
platform ever does come to rest on the pothole
device, the platform should be immediately
lowered and “locked out” to prevent further use
until a complete inspection of the mechanism is
performed by a qualified technician.
2.5-12 Lanyard Attachment Anchorage
1
Figure 2-11. Lanyard Attachment Anchorage
1. Lanyard Attachment Anchorage - Use this as an
attachment point for safety belt/harness tethers.
Do not attach belts/harnesses to any other point
on the platform. Do not use this point to lift,
anchor, secure or support the platform or any
other apparatus or material.
WARNING
The lanyard attachment anchorage
is used for travel restraint, within the
limits of the platform only. It is not a fall
arresting device! Use as such could result
in death or serious injury.

TM
Page 22 December 2007
Vertical Mast Series
Component Identification Section 2 - Operation
2.5-13 Platform Maintenance Lock Mechanism
This locking mechanism is located underneath the
platform.
1
Figure 2-12. Platform Maintenance Lock
1. The aerial platform is equipped with a maintenance
lock mechanism. When engaged, it allows access
to the hydraulic/electrical compartment. During
this access, it disables all functions.
CAUTION
Aerial platform motion can occur when
engaging diagnostic switch.
2. Hydraulic functions can be enabled by engaging
the diagnostic switch.