Skyjack SJ12 E User manual

OPERATION
MANUAL
VERTICAL MAST
243762ABA
August 2022
ANSI/CSA
SJ12 E, SJ16 E, SJ20 E

This manual is for MEWPs with serial numbers:
SJ12 E: A601 001 639 & above
SJ16 E: A601 001 639 & above
SJ20 E: A601 001 639 & above
Please refer to the website (www.skyjack.com) for
contact information, other serial numbers, most re-
cent technical manuals, and USB
software.
The original instructions are in English.

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The Safety Alert symbol identies important safety
messages on MEWPs, 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.
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 MEWP.
Red
DANGER.
Orange
WARNING.
Yellow
CAUTION.
Green
Emergency-
lowering
procedure.
Blue
Safety
information.
THIS SAFETY ALERT SYMBOL MEANS ATTENTION!
BE ALERT! YOUR SAFETY IS INVOLVED.

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Notes

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Section 1 – About this Mobile Elevating Work Platform (MEWP) . . . . . . . . . . . . . . . . . . . . 9
1.1 Read and heed .....................................................................9
1.1-1 Mobile Elevating Work Platform (MEWP) denition ......................................9
1.1-2 Purpose of equipment ...........................................................9
1.1-3 Use of equipment ...............................................................9
1.1-4 Operation manual ...............................................................9
1.1-5 Operator ......................................................................9
1.1-6 Service policy and warranty .......................................................9
1.1-7 Ownership of MEWP .............................................................9
1.1-8 Optional equipment .............................................................9
1.1-9 Scope of this manual ...........................................................10
1.2 Primary assemblies ................................................................11
1.3 Serial number nameplate ...........................................................12
1.4 Maintenance responsibility ..........................................................13
1.4-1 Operator .....................................................................13
1.4-2 Maintenance and inspection schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.4-3 Owner .......................................................................13
Section 2 – General Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 Electrocution hazards ..............................................................15
2.1-1 Minimum distance from electrical conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Safety instructions ................................................................16
2.3 Fall protection ....................................................................19
2.4 Worksite inspection ................................................................19
Section 3 – Familiarization ..................................................21
3.1 Overview of the MEWP .............................................................22
3.2 Manual storage box ................................................................23
3.3 Control functions ..................................................................23
3.3-1 Main power disconnect switch ....................................................23
3.3-2 Base control console ...........................................................23
3.3-3 Platform control console .........................................................24
3.4 Features and devices ..............................................................24
3.4-1 Lowered travel position and elevated travel position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.4-2 Drive speed ...................................................................25
3.4-3 Tilt switch ....................................................................25
3.4-4 Brake release system ...........................................................25
3.4-5 Traversed platform interlock ......................................................25
Table of Contents

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3.4-6 Emergency-lowering system ......................................................25
3.4-7 Fall-protection anchorages .......................................................25
3.4-8 Pothole protection device ........................................................26
3.4-9 Platform load-sensing system .....................................................26
3.5 General components ...............................................................27
3.5-1 Diagnostic switch, display panel and circuit breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.5-2 AC power socket on the platform ..................................................27
3.5-3 Battery charger ................................................................28
3.5-4 Platform maintenance lock .......................................................28
3.5-5 Service pin ...................................................................28
3.6 Optional equipment ................................................................29
3.6-1 Secondary Guarding Lift Enable (SGLE) push-button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.6-2 Dual ashing lights .............................................................29
3.6-3 Elevate™ telematics - access control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.6-4 Wind rating control console ......................................................31
3.6-5 ECOTray leak containment system .................................................31
Section 4 – Inspections Before Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.1 Operator’s responsibility ............................................................33
4.2 Visual and daily maintenance inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.2-1 Labels .......................................................................34
4.2-2 Electrical .....................................................................34
4.2-3 Limit switches .................................................................34
4.2-4 Hydraulic .....................................................................34
4.2-5 Base ........................................................................35
4.2-6 Wheel/tire assembly ............................................................35
4.2-7 Platform assembly ..............................................................36
4.2-8 Hydraulic/electrical compartment ..................................................37
4.2-9 Lift mechanism ................................................................39
4.2-10 Optional equipment ............................................................39
4.3 Function tests ....................................................................40
4.3-1 Do a test of the main power disconnect switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.3-2 Do a test of the emergency-stop button on the base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.3-3 Do a test of the off/platform/base key switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.3-4 Do a test of the lower/neutral/raise switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.3-5 Do a test of the brake release function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.3-6 Do a test of the emergency-lowering function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.3-7 Do a test of the platform maintenance limit switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.3-8 Do a test of the emergency-stop button on the platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.3-9 Do a test of the function-enable switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.3-10 Do a test of the steer function .....................................................43
4.3-11 Do a test of the drive function .....................................................44
4.3-12 Do a test of the anti-tiedown function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

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4.3-13 Do a test of the brakes ..........................................................44
4.3-14 Do a test of the platform raise and lower functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.3-15 Do a test of the horn ............................................................45
4.3-16 Do a test of the elevated travel speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.3-17 Do a test of the SGLE switch (optional equipment) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.3-18 Do a test of the dual ashing lights (optional equipment) ...............................46
4.3-19 Do a test of the wind rating control console (optional equipment) . . . . . . . . . . . . . . . . . . . . . . . . 47
4.4 Operator’s checklist ...............................................................49
Section 5 – Operation ......................................................51
5.1 Energize the base control console ....................................................51
5.2 Raise or lower the platform with the base control console. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
5.3 Energize the platform control console .................................................51
5.4 Raise or lower the platform with the platform control console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
5.5 Drive forward or rearward ...........................................................53
5.6 Steer ............................................................................53
5.7 Platform traversing ................................................................53
5.8 Raise and lower with the SGLE platform control console (optional equipment) . . . . . . . . . . . . . . .54
5.9 MEWP shutdown ..................................................................54
Section 6 – Additional Procedures ...........................................55
6.1 Use the emergency-lowering function .................................................55
6.2 Release the brakes manually ........................................................55
6.3 Use the platform control console from the ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
6.3-1 Remove the platform control console ...............................................56
6.3-2 Operate the MEWP from the ground ...............................................56
6.4 Push, winch and tow the MEWP ......................................................58
6.5 Move the MEWP for transport ........................................................58
6.5-1 Hoist the MEWP ...............................................................59
6.5-2 Drive and tie-down the MEWP ....................................................59
6.6 Open the hydraulic/electrical compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
6.7 Charge the battery .................................................................62
6.8 Use the service pin ................................................................64
6.8-1 Insert the service pin ............................................................64
6.8-2 Store the service pin ............................................................64
Section 7 – Specications ..................................................65
7.1 Standard and optional equipment ....................................................65
7.2 Owner’s annual inspection record ....................................................66
7.3 Specications ....................................................................67
7.4 Maximum platform capacities (evenly distributed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.5 Environment .....................................................................69
7.6 Floor loading capacity ..............................................................70

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Section 8 – Labels ........................................................71
8.1 Rear view ........................................................................72
8.2 Left view .........................................................................74
8.3 Front view ........................................................................78
8.4 Right view .......................................................................81
8.5 Platform control console ............................................................83
8.6 Top view ........................................................................84
8.7 Platform- inside view ...............................................................85
8.8 Base - Inside view .................................................................86
8.9 Optional equipment ................................................................87
Section 9 – Unique Skyjack Features .........................................89

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Section 1 – About this Mobile Elevating
Work Platform (MEWP)
1.1 Read and heed
Skyjack is continuously improving and expanding
product features on its equipment; therefore,
specications and dimensions are subject to change
without notice.
1.1-1 Mobile Elevating Work Platform
(MEWP) denition
A MEWP is a mobile machine intended for moving
persons, tools, and material to working positions. It
consists of a work platform with controls, an extending
structure, and a chassis.
1.1-2 Purpose of equipment
The Skyjack Vertical Mast lifts are designed to move
personnel, tools, and materials to working positions.
1.1-3 Use of equipment
The MEWP is a highly maneuverable, mobile work
station. Only elevate the platform, or drive while
elevated on a rm, level surface.
1.1-4 Operation manual
The operation manual is an essential part of the
MEWP. It is important to always keep a copy of this
manual in the weather-resistant manual storage box of
the MEWP. The manual must be in good condition.
1.1-5 Operator
Before the operator uses the MEWP, they must read
and completely understand this information:
1. The full contents of the operation manual,
including the operating procedures, the MEWP
limitations, the responsibilities of the operator
for the operation, the applicable maintenance,
warnings and safety instructions.
2. The safety panel label on the platform, the labels
on the MEWP and the attachments.
Compare the labels on the MEWP with the labels in
this manual. Immediately replace any labels that are
damaged or missing.
Only trained and authorized personnel are permitted
to operate a MEWP.
The operator must be familiar with the employer’s
work rules and related government regulations.
1.1-6 Service policy and warranty
Skyjack warrants each new product to be free of
defective parts and workmanship for the rst 2 years
or 3000 hours, whichever occurs rst. Your local
Skyjack dealer will replace or repair any defective
part, with no charge for parts or labor. In addition,
all products have a 5 year structural warranty.
Contact the Skyjack Service Department for warranty
statement extensions or exclusions.
1.1-7 Ownership of MEWP
Notify Skyjack of MEWP ownership. If you sell or
transfer the ownership of a MEWP, promptly notify
Skyjack of the new owner’s contact information.
Skyjack needs this information to inform the owner of
any updates or additional activities that are necessary
to keep the machine in proper working condition.
1.1-8 Optional equipment
This MEWP accepts a variety of optional equipment.
Refer to Section 7.1 for a list of the optional
accessories. Section 5 contains operating instructions
for these options.
For components or systems that are not standard,
speak to the Skyjack Service Department. Give the
model and serial number for each applicable MEWP.

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1.1-9 Scope of this manual
1. This manual applies to the ANSI/CSA version
of the SJ Vertical Mast series. For a list of
applicable models, refer to Section 7.1.
▪Equipment identied with ANSI meets the
ANSI SAIA-A92.20-2021 standard.
▪Equipment identied with CSA meets the CSA
B354.6:2017 standard.

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Primary assemblies Section 1 – About this Mobile Elevating Work Platform (MEWP)
1.2 Primary assemblies
The MEWP has these primary assemblies:
1. Base
2. Lift mechanism
3. Platform.
1 Base: The base has these parts:
▪A rigid one piece weldment.
▪Hydraulic system and components.
▪Electrical system and components.
▪Two 12 volt batteries.
▪Emergency-lowering system at the base of the
mast.
▪The front wheels are powered by electric
motors, steered by a hydraulic cylinder, and
have spring-applied, electronically-released
brakes.
▪The rear wheels are non-driven.
2 Lift mechanism: The mast is raised and lowered
by a multi-stage hydraulic lift cylinder with
holding valves.
3 Platform: The platform has these parts.
▪Tubular support frame.
▪Slip-resistant deck surface.
▪Fixed tubular guardrails, with mid-rails and toe
boards.
▪Spring-returned gate with a latch.
▪AC power outlet.
1
2
3
Primary assemblies

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Section 1 – About this Mobile Elevating Work Platform (MEWP)
Serial number nameplate
1.3 Serial number nameplate
The serial number nameplate 1 is located at the
rear of the MEWP. It contains this information:
▪Model number
▪Type
▪Group
▪Serial number
▪Indoor or outdoor use
▪Capacity and maximum number of persons
▪Voltage
▪Maximum drive height
▪Maximum platform height
▪Maximum wind speed
▪Maximum manual force
▪Model year
▪MEWP weight
▪System pressure
▪Maximum incline
▪Year of manufacture
1

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Maintenance responsibility Section 1 – About this Mobile Elevating Work Platform (MEWP)
1.4 Maintenance responsibility
1.4-1 Operator
Before each shift starts, do all the daily inspections
and function tests. Refer to Section 4.
1.4-2 Maintenance and inspection
schedule
Refer to the service manual for the frequent, periodic,
and annual inspections.
The actual operating environment of the MEWP may
affect the maintenance schedule.
IMPORTANT
Only use original or manufacturer-approved parts
for the MEWP.
NOTE
Refer to the Skyjack website (www.skyjack.com) for
machine registration and the latest service bulletins
before you do periodic or annual inspections.
1.4-3 Owner
The owner is responsible for the maintenance
inspections and repairs. Refer to the service manual
for the maintenance instructions, the recommended
intervals and inspection areas. Keep a record of the
annual inspection on the label on the mast assembly.
Refer to Section 7.2.
WARNING
Only trained and qualied/competent personnel,
who understand the mechanical procedures, may
do maintenance on the MEWP. The use of a MEWP
that is not properly maintained or in the correct
working condition could result in death or serious
injury.

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Notes

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Section 2 – General Safety Precautions
WARNING
Failure to obey the instructions and precautions
in this manual could result in MEWP damage,
property damage, personal injury or death.
It is mandatory that you use this MEWP correctly.
Read this manual and make sure you fully understand
it before you operate the MEWP.
Use personal protective equipment (PPE) to protect
your eyes, ears, hands, feet, and body when you do
work on or near machinery.
Any modications to the MEWP must have written
permission from Skyjack.
WARNING
Do not operate the MEWP if:
▪It does not operate correctly.
▪It is damaged or shows worn or missing
parts.
▪The safety devices are tampered with or
disabled.
▪It is locked and tagged for servicing or repair.
▪It was modied without permission from
Skyjack and the MEWP owner.
If you do not obey, there is a risk of death or
serious injury.
2.1 Electrocution hazards
The MEWP is not electrically insulated and does
not provide protection if it is near or in contact with
energized electrical conductors. Follow Section 2.1-1
for the minimum distance to keep between all parts
of the MEWP, occupants, or tools, and the electrical
conductors. Consider the MEWP movement and
electrical line sway in minimum distance calculation.
If you need to work nearer than 3 m (10 ft), stop and
apply control measures as determined by a qualied
person with respect to electrical transmission and
distribution.
Obey all the national, state/provincial/territorial and
local safety rules.
2.1-1 Minimum distance from electrical
conductors
Voltage Range
Minimum Distance
from Electrical
Conductors
≤ 50 KVA 3 m (10 ft)
> 50 KVA, or if not known
STOP and apply control
measures as determined by a
qualied person with respect
to electrical transmission and
distribution.
DANGER
Electrocution hazard. Keep all parts of the MEWP,
occupants, and tools a safe distance away from
power lines, electrical power sources, or energized
sources. If you do not obey, there is a risk of death
or serious injury.
Keep a minimum safe distance
from sources of high-voltage
power.
DO NOT operate the MEWP
during lightning or storms.
CAUTION
DO NOT use the MEWP as a ground for welding.
If you do not obey, there is a risk of minor or
moderate injury, or malfunction or damage to the
MEWP.

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Section 2 – General Safety Precautions
Safety instructions
2.2 Safety instructions
WARNING
DO NOT operate this MEWP without proper
authorization and training. Failure to avoid this
hazard could result in death or serious injury.
WARNING
DO NOT operate this MEWP in enlcosed areas
without adequate ventilation for exhaust gas and
fumes. Failure to follow this warning could cause
death or serious injury.
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/provincial or territorial, and
local rules which apply to your MEWP and worksite.
MAKE SURE all the safety and instructional labels
are correctly attached on the MEWP in the correct
location. Clean or replace the labels that you cannot
read.
PREVENT unauthorized use. Disconnect and lock out
the main power disconnect at the front of the MEWP
when leaving the MEWP unattended.
DO NOT wear jewelry or loose
clothing that could become
caught or entangled.
DO NOT allow the
entanglement of ropes, cables
or hoses with the MEWP,
adjacent structures or objects.
Prevent falls from the platform.
Always keep a rm footing on
the platform oor when working
on it. Do not climb on the
toe-board, mid-rail, or top-rail.
Do not use planks, ladders,
or any other devices on the
platform to get more height or
reach.
DO NOT raise the platform or
operate elevated in windy or
gusty conditions that exceed
the limits specied in
Section 7.4.
DO NOT increase the surface
area of the platform or carry
large surface area items when
exposed to wind. Increasing the
area exposed to the wind will
decrease the MEWP stability.
DO NOT elevate or drive
elevated on a slope. Elevated
driving must be done on a rm,
level surface.
DO NOT drive elevated on a
soft or uneven surface.
DO NOT raise the platform if it
is not on a rm, level surface.
MAKE SURE the ground condition assessment
considers subsurface voids such as cellars,
basements, culverts, and pipes.

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Safety instructions Section 2 – General Safety Precautions
DO NOT drive elevated near
depressions or holes of any
type, loading docks, debris,
drop-offs or surfaces that may
affect the stability of the MEWP.
IF OPERATION IN AREAS
WITH HOLES OR DROP-OFFS
IS ABSOLUTELY NECESSARY,
elevated driving is not allowed.
Position the MEWP horizontally
only with the platform fully low-
ered. After making sure that all
four wheels have contact with a
rm, level surface, the platform
can be raised. After elevation,
the drive function must not be
activated.
DO NOT ascend or descend grades greater than
the maximum inclines listed in Section 7.3. Only
ascend or descend slope when the platform is
fully lowered.
DO NOT operate a MEWP that
has ladders, scaffolding, or
other devices on it to increase
the platform size or work height.
DO NOT exceed the maximum
side force shown on the
capacity label when the platform
is elevated (refer to Section 7.4).
DO NOT use the MEWP as a
crane.
DO NOT sit, stand, or climb on
the guardrails.
DO NOT climb on the base or
the mast.
DO NOT collide or crush.
Be aware of obstructions,
personnel, or other possible
hazards around the MEWP
when elevating, lowering, or
driving. Keep all body parts
inside the platform when
elevating or driving. Be aware
of blind spots when operating
the MEWP.
DO NOT elevate the platform
when the MEWP is on a truck,
forklift, or other device or
vehicle.
DO NOT use the MEWP
when the wheels or tires are
damaged. Make sure the wheel
nuts and cotter pins are in place
(refer to Section 4.2-6).

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Section 2 – General Safety Precautions
Safety instructions
DO NOT alter or disable
limit switches or other safety
devices.
DO NOT use the MEWP without
guardrails, lock pins, and the
entry gate in place.
DO NOT use the MEWP under
the inuence of alcohol or
drugs, or if the operator’s
performance is impaired by a
medical condition, the inuence
of prescription or over-the-
counter drugs, or fatigue.
DO NOT exceed the rated
capacity of the MEWP.
DO NOT distribute the load
unevenly.
DO NOT use the MEWP if it
does not function correctly or if
any parts are damaged or worn.
DO NOT leave the MEWP
unattended with the key in the
key switch.
DO NOT access the hydraulic/
electrical compartment while
the platform is raised.
.
DO NOT operate on slippery surfaces without
sufcient traction to stop, drive, or steer the MEWP.
STUNT driving and horseplay are prohibited.
DO NOT position the MEWP against another
object to steady the platform.
DO NOT place materials on the guardrails
or materials that exceed the connes of the
guardrails unless approved by Skyjack.
Remove all personnel from the platform before
you try to free a snagged platform with the base
controls.

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Fall protection Section 2 – General Safety Precautions
2.3 Fall protection
The guardrail system is the primary fall-protection
system of the MEWP platform.
If personal fall-protection equipment (PFPE) is
required by an employer or the authority having
jurisdiction, Skyjack recommends the use of a
full body harness with a lanyard. The PFPE must
be attached only to the approved fall-protection
anchorage points in the platform.
All PFPE must be compliant with the applicable
government rules and must be inspected as per the
manufacturer’s recommendation.
Use the three points of contact principle when you
enter or exit the platform. This is when two hands and
one foot, or two feet and one hand are in contact with
the MEWP or the ground at all times.
2.4 Worksite inspection
Make sure the operating environment, ambient
temperature, electromagnetic compatibility (EMC),
and hazardous location rating (locations with
potentially ammable gases, explosive gases or
particles) are appropriate for the MEWP specications
(refer to Section 7.5).
Be sure to follow all national, state/provincial/territorial,
and local rules that relate to operating the MEWP.
Perform a full worksite inspection before operating the
MEWP. Identify potential hazards in the area.
Be aware of moving equipment in the area. Take the
necessary precautions to prevent collisions.
It is the responsibility of the operator to perform
a worksite inspection and avoid or address the
following hazards:
▪Holes or drop-offs
▪Slopes
▪Ditches or soft lls
▪Floor obstructions, bumps, or debris
▪Overhead obstructions
▪Electrical conductors
▪Hazardous locations
▪Inadequate surface support to withstand all load
forces imposed by the MEWP (refer to
Section 7.6)
▪Wind and weather conditions
▪Presence of personnel
▪Other mobile equipment
▪Trafc hazards
▪Equipment that could move and collide with the
MEWP, such as overhead cranes
▪Other possible unsafe conditions.
WARNING
Fall hazard.
▪Only enter and exit the MEWP using the three
points of contact principle.
▪Only use the equipped access openings.
▪Only enter and exit the MEWP from the
ground when the platform is fully lowered.
▪Face the MEWP when entering or exiting the
platform.
Failure to follow these instructions could result in
death or serious injury.

20
SJ12 E, SJ16 E, SJ20 E243762ABA
Notes