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SJIII 4740
Skyjack SJIII 4740 User Manual
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198735AG
A
April 2018
DC ELEC
TRIC SCISSORS
MODEL SJIII 4740
OPERA
TING MANUAL (ANSI/CSA)
2
Table of Contents
Table of Contents
4
Section 1 - about Your MEWP
5
Read and Heed
5
Safety Rules
6
Electrocution Hazard
7
Minimum Safe Approach Distance
7
Safety Precautions
8
Fall Protection
11
Jobsite Inspection
11
Familiarization of Model SJIII 4740
13
Section 2- Familiarization
13
Component Identification
14
Main Power Disconnect Switch
14
Base Control Console
14
Tilt Alarm
14
Brake System
15
Free-Wheeling Valve
15
Emergency Lowering System
16
Platform Control Console
17
Lift/Drive/Steer Enable Trigger Switch
17
Lift/Drive/Steer Controller
17
Emergency Stop Button/Operation Light
17
Visual & Daily Maintenance Inspections
18
Limit Switches
18
Hydraulic
18
Entrance Side
19
Base Control Switches
19
Free-Wheeling Valve Knob
19
110V Outlet Receptacle
19
Battery Tray Side
20
Pothole Protection Device
20
Battery Tray
20
Battery Charger
20
Familiarization
21
Steer Cylinder Assembly
21
Wheel/Tire Assembly
21
Steer Linkages
21
Hydraulic/Electric Tray Side
22
Hydraulic Tank
22
Hydraulic Oil
22
Main Manifold
22
Platform Assembly
23
Lifting Mechanism
24
Lift Cylinders
24
Scissor Assembly
24
Scissor Bumpers
24
Function Tests
25
Test Main Power Disconnect Switch
25
Back View
25
Test Base Emergency Stop
26
Test Off/Platform/Base Switch
26
Test Lower/Neutral/Raise Switch
26
Test Emergency Lowering
27
Test Free-Wheeling
27
Test Platform Emergency Stop
28
Test Steering
28
Test Platform Raising/Lowering
30
Test Horn
30
Test Elevated Drive Speed
31
Winching and Towing Procedures
32
To Release Free-Wheeling Valve
32
To Release Brakes Manually
32
Emergency Lowering Procedure
33
General
35
Operator Qualifications
35
Maintenance and Inspection Schedule
35
Section 3 - Operation
35
Major Components
36
Major Assemblies
37
Serial Number Nameplate
37
Electrical Panel
38
AC Outlet on Platform
38
Component Identification
38
Maintenance of the Pothole Protection Device
39
Maintenance Supports
39
Manual Storage Box
40
Folding Guardrail System
40
Fall Protection Anchorage
40
800W AC Inverter
41
Motion Alarm
41
W AC Inverter Location
41
Component Identification (Optional Equipment/Attachments)
41
Using Optional Control Box with Long Cable from Ground
42
Operation from the Ground
42
Control Box with Long Cable
42
Control Box with Long Cable Outside Platform
43
Operator's Responsibility
44
Visual and Daily Maintenance Inspections
44
Start Operation
45
To Activate Base Control Console
45
To Raise or Lower Platform Using Base Control Console
45
To Activate Platform Control Console
46
To Raise or Lower Platform Using Platform Control Console
46
To Drive Forward or Backward
47
To Steer
47
To Select Level Drive or Inclined Drive Mode
48
To Extend/Retract Manual Extension Platform
48
Variable Position Manual Extension Platform
48
Electrical Inverter
49
Shutdown Procedure
49
Guardrail Folding Procedures
50
To Fold the Guardrail System down
50
Extension Top Rail Pins
50
Rear Gate Folded down
51
Guardrails Folded down
51
To Raise the Guardrail System up
52
Guardrail Folding Procedure for Mewps
53
Extension Handrail Locking Pin Locations
53
Extension Handrail Locked into Place
54
Upper Rear Gate Locking Pin Locations
54
Fold down the Left Guardrail
54
Remaining MID-Rail Locking Pin Locations
55
Fold down the Rear Gate
55
Guardrail Locking Pin Locations
56
Loading/Unloading
58
Tie Downs/Lifting Points
58
Center of Gravity
58
Driving
59
Forklift Pockets
59
Moving the MEWP through a Doorway
60
Maintenance Supports Procedure
62
To Deploy the Maintenance Supports
62
To Store the Maintenance Supports
62
Battery Maintenance
63
Battery Service Procedure
63
Battery Charging Operation
63
Charging State LED
64
3 Leds Blink Once Simultaneously
64
3 Leds Blink Twice Simultaneously
64
3 Leds Blink Three Times Simultaneously
64
Servicing the Battery
66
Charging the Battery
66
Battery Maintenance (if Equipped)
66
Standard and Optional Features - ANSI/CSA
69
Section 4 - Tables
69
Specifications and Features
71
Floor Loading Pressure
72
Locally Concentrated Pressure (LCP)
73
Overall Uniform Pressure (OUP)
73
Maximum Platform Capacities (Evenly Distributed)
74
General Maintenance
75
Operator’s Checklist
76
Label Legend
79
Section 5- Labels
79
Labels and Nameplates - Model SJIII 4740
80
Right Side
80
5
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Skyjack SJIII 4740 Specifications
General
Platform Height
40 ft
Drive Speed
3.5 mph
Gradeability
30%
Power Source
Electric
Tire Type
Non-Marking
Steering
Front Wheel
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