Skyjack SJ20 Operation Manual
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Skyjack SJ20 Operation Manual

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OPERATION
MANUAL
SJ20
VERTICAL MAST
236504ADA
June 2021
ANSI/CSA

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  • Page 1 OPERATION MANUAL SJ20 VERTICAL MAST 236504ADA June 2021 ANSI/CSA...
  • Page 2 This manual is for MEWPs with serial numbers: SJ20: A601 000 001 & above Please refer to the website (www.skyjack.com) for contact information, other Serial Numbers, most recent Technical Manuals, and USB software. Original instructions in English.
  • Page 3 It may also be used to alert against unsafe practices. Blue Safety information. IMPORTANT IMPORTANT indicates a procedure essential for safe operation and which, if not followed, may result in a malfunction or damage to the MEWP . SJ20 236504ACA...
  • Page 4 Notes 236504ACA SJ20...

  • Page 5: Table Of Contents

    Emergency-lowering system ............25 SJ20...
  • Page 6 4.3-13 Do a test of the brakes ............44 236504ACA SJ20...
  • Page 7 Specifications ..............67 SJ20...
  • Page 8 Section 9 – Unique Skyjack Features ........

  • Page 9: Section 1 - About This Mobile Elevating Work Platform (Mewp)

    3000 hours, whichever occurs first. Any defective 1.1-2 Purpose of equipment part will be replaced or repaired by your local Skyjack The Skyjack Vertical Mast lifts are designed to move dealer at no charge for parts or labor. In addition, personnel, tools, and materials to working positions.

  • Page 10: Scope Of This Manual

    1. This manual applies to the ANSI/CSA versions of the SJ Vertical Mast series. For a list of applicable models, refer to Section 7.1. Equipment identified with ANSI meets the ▪ ANSI/SAIA-A92.20-2018 standard. Equipment identified with CSA meets the ▪ CSA B354.6:2017 standard. 236504ACA SJ20...

  • Page 11: Primary Assemblies

    Fixed tubular guardrails, with mid-rails, and toe ▪ boards. You can enter and exit the platform from the ▪ front of the MEWP through a spring-returned gate with a latch. AC power outlet. ▪ Figure 01 Primary assemblies SJ20 236504ACA...

  • Page 12: Serial Number Nameplate

    ▪ 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. ▪ 236504ACA SJ20...

  • Page 13: Maintenance Responsibility

    IMPORTANT Only use original or manufacturer-approved parts and components for the MEWP . NOTE Refer to the Skyjack web site (www.skyjack.com) for machine registration and the latest service bulletins before you do frequent/periodic or annual inspections. 1.4-3 Owner The owner is responsible for maintenance inspections and repairs.
  • Page 14 Notes 236504ACA SJ20...

  • Page 15: Section 2 - General Safety Precautions

    ▪ from sources of high-voltage It was modified without permission from ▪ power. Skyjack and the MEWP owner. If you do not obey, there is a risk of death or serious injury. 2.1 Electrocution hazards DO NOT operate the MEWP during lightning or storms.

  • Page 16: Safety Instructions

    MAKE SURE the ground condition assessment considers subsurface voids such as cellars, basements, culverts, and pipes. DO NOT allow the entanglement of ropes, cables or hoses with the MEWP , adjacent structures or objects. 236504ACA SJ20...
  • Page 17 DO NOT use the MEWP when the wheels or tires are damaged (refer to section Section 4.2-6). Make sure the wheel nuts and DO NOT sit, stand, or climb on cotter pins are in place. the guardrails. SJ20 236504ACA...
  • Page 18 DO NOT place materials on the guardrails performance is impaired by a or materials that exceed the confines of the medical condition, the influence guardrails unless approved by Skyjack. of prescription or over the counter drugs, or fatigue. Remove all personnel from the platform before...

  • Page 19: Fall-Protection

    If personal fall-protection equipment (PFPE) is potentially flammable gases, explosive gases or required, by an employer or the authority having particles) are appropriate for the MEWP specifications jurisdiction, Skyjack recommends the use of a full (refer to Section 7.4). body harness with a lanyard. PFPE must be attached...
  • Page 20 Notes 236504ACA SJ20...

  • Page 21: Section 3 - Familiarization

    (refer to Section on the MEWP . Do these tasks before the operation: 1. Worksite inspection. Refer to Section 2.4. 2. Daily visual and maintenance inspections. Refer Section 4.2. 3. Function tests. Refer to Section 4.3. SJ20 236504ACA...

  • Page 22: Overview Of The Mewp

    3.1 Overview of the MEWP Dual height control console Platform control console Manual storage box Fall-protection anchorages Battery Charger Emergency-lowering valve Hydraulic battery tray Base control console Main power disconnect switch 230744ACZZ 3 sec Diagnostic switch Circuit breaker Brake release switch 236504ACA SJ20...

  • Page 23: Manual Storage Box

    The switch must be in the on position to operate the MEWP . The switch must be in the off position when you transport the MEWP or put it in storage. SJ20 236504ACA...

  • Page 24: Platform Control Console

    Lift/drive/steer function-enable: This switch 1 m (3 ft 3 in) Full Height energizes the controller handle. Squeeze and SJ20 hold the switch continuously to engage the lift, drive and steer functions. Lift/drive controller: This one-hand lever controls the lift and drive movements. To return it to the initial neutral position, release the controller.

  • Page 25: Drive Speed

    Only use the fall protection anchorage in the limits of the platform. Do not use the fall protection anchorage for other than its intended function (refer to Section 2.3). If you use it incorrectly, death, serious injury, and/or MEWP damage can occur. SJ20 236504ACA...

  • Page 26: Pothole Protection Device

    WARNING Fall hazard. Do not try to free a snagged platform with the base controls until you remove all personnel from the platform. If you do not obey, there is a risk of death or serious injury. 236504ACA SJ20...

  • Page 27: General Components

    WARNING Do not use the diagnostic switch when there are personnel on the platform. The MEWP may move when you engage the diagnostic switch. If you do not obey, there is a risk of death or serious injury. SJ20 236504ACA...

  • Page 28: Platform Maintenance Lock

    3.6 Optional equipment The platform has a locking mechanism located below the platform. CAUTION Skyjack approved modifications and attachments can change the MEWP specifications. Refer to the applicable instructions and labels. IMPORTANT Refer to the labels of the optional equipment the actual weight.

  • Page 29: Flashing Light

    The green light on the keypad of the access ▪ Smart ID cards for MEWPs that have the access control unit. control function. Skyjack does not supply or reset The main power disconnect switch. ▪ PIN codes or Smart ID cards. Speak to the MEWP The emergency-stop button on the base control ▪...
  • Page 30 Smart ID card. These power connections must be in the ON position in the set time: The main power disconnect switch ▪ The emergency-stop button on the base ▪ control console The off/platform/base key switch. ▪ 236504ACA SJ20...

  • Page 31: Dual Height Control Console

    Dual height Status light The indoor (no wind) mode is on. The platform can go to the maximum height. The outdoor (wind) mode is on. The platform can only go to 3.96 m (13 ft) SJ20 236504ACA...
  • Page 32 Notes 236504ACA SJ20...

  • Page 33: Section 4 - Inspections Before Operation

    If the MEWP is damaged or has been modified from the initial factory-delivered condition, without permission from Skyjack, lock and tag the MEWP . Remove the MEWP from service. If you do not obey, there is a risk of death or serious injury.

  • Page 34: Visual And Daily Maintenance Inspections

    Make sure that the MEWP is on a firm, level All hydraulic cylinders ▪ surface before you do the visual and daily All hydraulic manifolds maintenance inspections. If you do not obey, there ▪ is a risk of machine damage. The ground area below the MEWP ▪ 236504ACA SJ20...

  • Page 35: Base

    ▪ installed. WARNING There are no loose or missing fasteners. ▪ Do not use tires other than the tires that Skyjack There is no visible damage. ▪ specifies for this MEWP . Do not mix different types Battery charger of tires or use tires that are not in good condition.

  • Page 36: Platform Assembly

    Fall-protection anchorages Make sure that the fall-protection anchorages ▪ are correctly attached. Make sure the fall protection anchorages show ▪ no signs of visible damage, deformation, or cracks. 236504ACA SJ20...

  • Page 37: Hydraulic/Electrical Compartment

    The hydraulic oil level must levels. If the plates do not have a minimum be at or a small distance above the top mark. 13 mm (1/2 inch) of solution above them, add distilled or demineralized water. SJ20 236504ACA...
  • Page 38 Make sure there is no visible damage. ▪ Wheel/motor assembly Make sure there are no loose or missing ▪ fasteners. Make sure there is no visible damage. ▪ Make sure there are no loose or missing wires. ▪ 236504ACA SJ20...

  • Page 39: Lift Mechanism

    Make sure there are no loose or missing parts. ▪ Make sure the bolts are tight. ▪ Make sure there is no visible damage. ▪ Make sure there are no loose or missing parts. ▪ Make sure there is no visible damage. ▪ SJ20 236504ACA...

  • Page 40: Function Tests

    Result: The platform does not rise. ▪ platform position. 3. Turn and hold the lower/neutral/raise switch to the raise position. Result: The platform does not rise. ▪ 4. Turn and hold the off/platform/base key switch to the base position. 236504ACA SJ20...

  • Page 41: Do A Test Of The Lower/Neutral/Raise Switch

    If you do not obey, there is a risk of death, serious Result: The MEWP does not move. ▪ injury, and/or MEWP damage. 1. Make sure that the MEWP is on firm, level ground. 2. Make sure the path of travel is clear. SJ20 236504ACA...

  • Page 42: Do A Test Of The Emergency-Lowering Function

    2. Push the emergency-stop button on the base latch it in place. control console. 3. On the rear of the base, pull out and hold the emergency-lowering valve to fully lower the platform. Result: The platform fully lowers. ▪ 236504ACA SJ20...

  • Page 43: Do A Test Of The Emergency-Stop Button On The Platform

    Result: The drive function does not operate. ▪ 3. Squeeze and hold the function-enable switch 4. Slowly push the controller handle until the MEWP starts to move. Then, release the handle, so that it goes back to the center position. SJ20 236504ACA...

  • Page 44: 12 Do A Test Of The Anti-Tiedown Function

    Result: The MEWP comes to a short and ▪ gradual stop. Do not operate the MEWP if the MEWP pulls to one side while it stops. A service technician must do a check on the brake adjustments. 236504ACA SJ20...

  • Page 45: 14 Do A Test Of The Platform Raise And Lower Functions

    4. Squeeze and hold the function-enable switch 5. Pull the controller handle to fully lower the platform. Result: The platform fully lowers. ▪ 4.3-15 Do a test of the horn 1. Push the horn button Result: The horn makes a sound. ▪ SJ20 236504ACA...

  • Page 46: 17 Do A Test Of The Sgle Switch (Optional Equipment)

    Result: The platform does not rise or lower. ▪ 3. Push and hold the SGLE button only. Do not squeeze the function-enable switch. Push and pull the controller handle to raise or lower the platform. Result: The platform does not rise or lower ▪ 236504ACA SJ20...

  • Page 47: 19 Do A Test Of The Dual Height Control Console (Optional Equipment)

    Result: The MEWP does not move. ▪ 3. Raise the platform to 4.57 m (15 ft). 9. Lower the platform. Result: The platform rises to 3.96 m (13 ft) and ▪ Result: The platform lowers. ▪ then stops. SJ20 236504ACA...

  • Page 48: Operator's Checklist

    Each item shall be inspected using the appropriate section PASS NOT APPLICABLE of the Skyjack operating manual. As each item is inspected, Add a comment if the item does not pass inspection. check or complete the appropriate box. Comment (if item does not pass inspection)
  • Page 49 Do a test of the flashing light Do a test of the dual height control console Page 2 of 2 2155AA NOTE: Make a copy of this page or go to www.skyjack.com for a copy that you can print. SJ20 236504ACA...
  • Page 50 Notes 236504ACA SJ20...

  • Page 51: Section 5 - Operation

    2. Pull the emergency-stop button on the base ▪ control console. It was modified without permission from ▪ Skyjack and the MEWP owner. 3. Turn the off/platform/base key switch to the platform position. If you do not obey, there is a risk of death or serious injury.

  • Page 52: Raise Or Lower The Platform With The Platform Control Console

    3. Move the lift/off/drive switch to the lift position. 4. Squeeze and hold the function-enable switch. 5. Move the controller handle forward or rearward to go to the necessary height. NOTE The lowering function is not proportional. 236504ACA SJ20...

  • Page 53: Drive Forward Or Rearward

    MEWP . A qualified service technician must do a complete inspection. If you do not obey, there is a risk of MEWP damage. SJ20 236504ACA...

  • Page 54: Raise And Lower With The Sgle Platform Control Console (Optional Equipment)

    6. Push the emergency-stop button. lower, drive, steer, or emergency-lowering. 7. Turn the main power disconnect switch to the off position. 7. Release the controller handle until it goes back to the center position to stop. Release the function-enable switch. 236504ACA SJ20...

  • Page 55: Section 6 - Additional Procedures

    Do not lower the platform unless the area below is clear of personnel and obstructions. If you do not obey, there is a risk of death or serious injury. 5. Pull out and hold the emergency-lowering valve to fully lower the platform. SJ20 236504ACA...

  • Page 56: Use The Platform Control Console From The Ground

    Refer to Section 2.4. the platform control console from the mounting 2. Cordon-off the pathway you plan to travel. bracket. 3. Put the platform control console down on the platform floor. 4. Exit the platform and close the gate. 236504ACA SJ20...
  • Page 57 8. Enter the platform and close the gate. principle when you use the MEWP to enter or exit the platform. If you do not obey, there is a risk of death or serious injury. 10. Exit the platform and close the gate. SJ20 236504ACA...

  • Page 58: Push, Winch And Tow The Mewp

    Tip-over hazard. Disengage the brakes manually movement during this operation. before you push, winch, or tow the MEWP . If you do not obey, there is a risk of death or serious injury. 236504ACA SJ20...

  • Page 59: Hoist The Mewp

    MEWP , front to back and side to side. Refer to Figure 05. Vertically, the center of gravity is approximately a small distance above the chassis. Figure 03 Tie-down and lift points SJ20 236504ACA...
  • Page 60 05. Vertically, the center of gravity is approximately a small distance above the base.. NOTE A forklift truck can lift the MEWP from the back. Lift with the forks in the forklift lift locations as shown in Figure 236504ACA SJ20...

  • Page 61: Open The Hydraulic/Electrical Compartment

    5. Push the platform until the maintenance lock engages. 6. Locate the platform maintenance lock mechanism underneath the platform. 7. Pull and hold the handle to unlatch the platform locking mechanism. 8. Fully pull the platform to the maintenance position. SJ20 236504ACA...

  • Page 62: Charge The Battery

    N/A. error The charger starts automatically in 4-6 seconds, error code display regardless of the remaining battery charge (down to 1 VDC terminal voltage). The LEDs show that Select Charge the charge continues. charge N/A. algorithm profile 236504ACA SJ20...
  • Page 63 Electrocution hazard. Do not touch parts of the charger output wires that are not insulated, the battery connector, or the battery terminals. If you do not obey, there is a risk of death or serious injury. WARNING Do not charge the batteries in hazardous areas. SJ20 236504ACA...
  • Page 64 Notes 236504ACA SJ20...

  • Page 65: Section 7 - Specifications

    Section 7 – Specifications 7.1 Standard and optional equipment Models SJ20 S T A N D A R D E Q U I P M E N T Maximum drive height Full Height Variable speed, front two wheel electric drive...

  • Page 66: Owner's Annual Inspection Record

    The Owner’s annual inspection record is located on the mast assembly. It must be filled out after an annual inspection has been completed. Do not use the MEWP if an inspection has not been recorded in the last 13 months. 236504ACA SJ20...

  • Page 67: Specifications

    Specifications Section 7 – Specifications 7.3 Specifications Model SJ20 Weight * 1107 kg (2440Ib) Overall Width 0.80 m (31.5 in) Overall Length 1.37 m (54 in) 0.69 m x 0.91 m Platform Size (Inside) (27.13 in x 35.66 in) Platform Traversing 0.41 m (16 in)

  • Page 68: Environment

    Section 7 – Specifications Environment 7.4 Environment Model SJ20 Electromagnetic Compatibility Meets requirements of ISO 13766-1:2018 (EMC) MEWP not rated for hazardous locations with potentially flammable gases, Hazardous Location Rating explosive gases or particles Operating Temperatures Standard -20°C (-4°F) to +40°C (+104°F) 2065AA 7.5 Maximum platform capacities (evenly distributed)

  • Page 69: Floor Loading Capacity

    WARNING Do not use tires other than the tires that Skyjack specifies for this MEWP . Do not mix different types of tires or use tires that are not in good condition.
  • Page 70 Notes 236504ACA SJ20...

  • Page 71: Section 8 - Labels

    Section 8 – Labels DANGER. Orange WARNING. Yellow CAUTION. Green Emergency- lowering procedure. Blue Safety information. SJ20 236504ACA...

  • Page 72: Labels

    Labels 8.1 Labels 8.1-1 Rear view Description Label pictorial Skyjack manufactured date Manufactured Shows the month and year of manufacture for this MEWP . /YYYY Lift and tie-down points Only use these points to lift or tie-down the MEWP .
  • Page 73 Insert the fork fully into the forklift lift location to lift the MEWP . Warning - crush hazard QR code This code gives you fast access to the MEWP documentation, and the live MEWP data supplied by ELEVATE telematics (optional equipment). SJ20 236504ACA...

  • Page 74: Left View

    *The model number can be different from the one you see. Wheel load* Shows the maximum load applied to the ground by the specified wheel. *Each model has different wheel loads. Skyjack logo Warning - crush hazard Talon Logo 236504ACA SJ20...
  • Page 75 Refer to the operation manual. Make sure the annual and daily inspections are done. Main power disconnect switch Turn the switch clockwise to turn the power on. Turn the switch counterclockwise to turn the power off. Use a padlock to lock the switch in position. SJ20 236504ACA...
  • Page 76 230744ACZZ Push the emergency-stop button to disconnect power ▪ to the control circuit. Pull the emergency-stop button to connect the power again. 3 sec Cut out Push the power circuit breaker to reset the power circuit ▪ breaker. 236504ACA SJ20...
  • Page 77 Cut out Cut out 230744ACZZ 2. Push, winch, or tow the MEWP to the necessary location. 3. Put the MEWP on a firm, level surface. 4. Push the emergency-stop button to engage the brakes. 3 sec Cut out SJ20 236504ACA...

  • Page 78: Front View

    Refer to the operation manual. Do the visual inspections and function tests before you start each work shift. Refer to Section 4.4. Warning - California proposition 65 WARNING Cancer and reproductive harm - Cancer and Reproductive Harm- https://www.p65warnings.ca.gov/. https://www.p65warnings.ca.gov/. 236504ACA SJ20...
  • Page 79 Only use these points to lift or tie-down the MEWP . No jewelry Caution. Do not wear jewelry or loose clothing that could become caught or entangled. Refer to the service manual. Remove the cover to perform the scheduled maintenance. SJ20 236504ACA...
  • Page 80 This MEWP is not electrically insulated and does not provide protection from contact with or proximity to 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. Warning - crush hazard 236504ACA SJ20...

  • Page 81: Right View

    Label Pictorial AC power plug Connect the AC supply here. Manual storage box Shows the location of the operation manual. Skyjack logo Model number* Product identifier. *The model number can be different from the one you see. Warning - crush hazard...
  • Page 82 Label Pictorial Wheel load* Shows the maximum load applied to the ground by the specified wheel. *Each model has different wheel loads. Location of the platform control console Shows the location of the platform control console. Talon Logo 236504ACA SJ20...

  • Page 83: Platform Control Console

    Push the horn button to make a sound like a car horn. ▪ Push the emergency-stop button to disconnect power ▪ to the control circuit. Pull the emergency-stop button to connect the power again. The operation light goes on to indicate upper control availability. CUT OUT SJ20 236504ACA...

  • Page 84: Base View (Cover Down)

    Section 8 – Labels Labels 8.1-6 Base view (cover down) Description Label Pictorial Warning - do not open Do not access the hydraulic/electrical compartment while the platform is elevated. Elevate™ Trackunit (optional) This MEWP has added functionality. 221111 236504ACA SJ20...

  • Page 85: Platform (Inside View)

    Labels Section 8 – Labels 8.1-7 Platform (inside view) Description Label Pictorial Do not alter Do not tamper with or disable the limit switches or other safety devices. SJ20 236504ACA...

  • Page 86: Base View-Cover Up

    Shows the minimum and maximum hydraulic oil level. LOW/MIN 173880AAZZ Hydraulic Oil ATF Dexron III Only replace the hydraulic fluid with ATF Dexron III. Maintenance Switch Refer to the service manual. This switch enables the hydraulic functions for maintenance/servicing. 236504ACA SJ20...

  • Page 87: Optional Equipment

    (wind) mode. 0 m/s (0 mph) Secondary Guarding Lift Enable (SGLE) push-button This push-button energizes the lift function. Hold the button down together with the function-enable switch to enable the raising of the platform with the lift function. SJ20 236504ACA...
  • Page 88 Section 8 – Labels Labels Optional equipment (continued) Description Label Pictorial Ecotray 236504ACA SJ20...

  • Page 89: Section 9 - Unique Skyjack Features

    Having equipment with features and functionality that allow you and your customers to do more is a vital part of the utilization equation. Skyjack offers a range of accessory products to further expand a given product’s adaptability and your power to offer a truly flexible rental choice.
  • Page 90 Notes 236504ACA SJ20...
  • Page 91 WARNING Cancer and Reproductive Harm- https://www.p65warnings.ca.gov/.
  • Page 92 www.skyjack.com...

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