GMG 3394-ERT User manual
OPERATOR’S MANUAL
3394-ERT
4694-ERT
6094-ERT
3394-ERT serial # 2339401000 - Current
4694-ERT serial #2469401000 - Current
6094-ERT serial # 2609401000 - Current
October 2021
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Table of Contents
Section 1 - Introduction
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Section 2 - Safety
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Section 3 - Hazards
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Section 4 - Component Locations
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Section 5 - Jobsite Inspection
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Section 6 - Functions Tests and Operating Instructions
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Section 7 - Emergency Systems
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Section 8 - Deck Extension
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Section 9 - Fold Down Platform Railings
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Section 10 - Machine Inspections and Maintenance
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Section 11 - Serial Plate Description
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Section 12 - Troubleshooting
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Section 13 - Transport and Lifting Instructions
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This Operator’s Manual has been designed to provide you, the owner, user or operator, with the instructions and
operating procedures essential to properly and safely operate your GMG Aerial Work Platform for positioning personnel,
along with their necessary tools and materials, to overhead work locations.
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Global Machinery Group, Inc.
3428 Bullock Lane
San Luis Obispo, CA 93401 USA
Phone: +1.805.303.2066
www.goGMG.com
Your GMG Aerial Work Platform has been designed, built, and tested to provide safe, dependable service.
Only authorized, trained and qualified personnel shall be allowed to operate or service the machine.
GMG, as manufacturer, has no direct control over machine application and operation. Proper safety practices
are the responsibility of the owner, user and operator.
If there is a question on application and/or operation contact:
Global Machinery Group, Inc.
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Failure to read, understand and follow all safety rules, warnings, and instructions could result in serious injury
or death. For your safety and the safety of those around you, you must operate your machine as instructed in
this manual.
GMG designs aerial work platforms to safely and reliably position personnel, along with their necessary tools
and materials, at overhead work locations. The owner/user/operator of the machine should not accept
responsibility for the operation of the machine unless properly trained.
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GMG manuals use symbols and colours to help you recognize important safety, operation and maintenance
information:
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This product can expose you to chemicals known to the State of California to cause
cancer and birth defects or other reproductive harm. For more information go to
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Operators must comply with employer, job site and governmental rules regarding
the use of personal protective equipment.
If required by your employer or job site, use personal fall protection equipment (PFPE)
when operating this machine.
All PFPE must comply with applicable governmental regulations, and must be
Inspected and used in accordance with the PFPE manufacturer’s instructions.
Fall restraint must be properly attached to a designated anchorage point when driving
or operating the machine. Attach only one fall restraint to each anchorage point.
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This machine is not electrically insulated and will not provide protection from contact with
or proximity to electrical current.
Maintain safe distances from electrical power lines and apparatus in accordance with
applicable government regulations and the following chart:
Allow for platform movement, electrical line sway or sag and beware of strong or gusty winds.
Keep away from the machine if it contacts energized power lines. Personnel on the ground or in the platform must not
touch or operate the machine until energized power lines are shut off.
Do not use the machine as a ground for welding.
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Personnel in the platform:
• Move away from the platform rails
• DO NOT attempt to operate the machine
• DO NOT touch any part of the machine until energized power lines are shut off.
Personnel in the ground:
• DO NOT approach the machine
• DO NOT touch or operate the machine until energized power lines are shut off.
Do not operate the machine during electrical storms or lightning
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Voltage
0 to 300 Volts Avoid contact
Over 300V to 50kV 3,10 m
Over 50kV to 200kV 4,60 m
Over 200kV to 350 kV 6,10 m
Over 350kV to 500kV 7,60 m
Over 500kV to 750 kV 10,7 m
Over 750kV to 1000kV 13,7 m
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'2127 exceed the maximum platform capacity. The weight of options and
accessories will reduce the rated platform capacity and must be factored into the
total platform load. Refer to the decals on the options.
'2127 elevate the platform when the machine is on a surface that is soft
and / or on a slope.
'2127 depend on the tilt alarm as a level indicator.
STOP if the tilt alarm sounds and the red light illuminates when the platform is
raised. Use extreme caution to lower the platform. Move the machine to a level
surface.
Driving: '2127 drive the machine on a slope that exceeds
the maximum uphill or downhill slope rating. Slope rating applies to machines in
the stowed position.
Driving in stowed position: use extreme care and reduce speed when driving
across uneven terrain, debris, unstable or slippery surfaces, and near holes or
drop-offs.
Driving with the platform elevated: '2127 drive on or near uneven terrain,
unstable surfaces, curbs, drop-offs or other hazardous conditions.
'2127 push or pull toward any object outside the platform.
'2127push the machine or other objects with the platform.
'2127 contact adjacent structures with the platform.
'2127 use the platform controls to free a platform that is caught, snagged or
otherwise prevented from normal motion by an adjacent structure. For outdoor
rated machines, '2127 elevate the platform when wind speeds are in excess
12,5 m/s. If wind speeds exceed 12,5 m/s when the platform is elevated, carefully
lower the platform and discontinue operation.
'2127 increase the surface area of the platform (i.e. cover the rails with tarp or
plywood). Increased surface area exposed to the wind will decrease machine
stability.
'2127 attach overhanging loads or use the machine as a crane.
'2127 place loads outside the platform perimeter.
1(9(5 transport tools and materials unless they are firmly secured. Secure all
tools and loose materials.
1(9(5 alter or disable any machine components.
1(9(5 replace any part of the machine with items of different weight or
specification.
1(9(5 modify or alter the work platform without written permission from GMG.
1(9(5 place ladders or scaffolds in the platform or against any part of the
machine.
1(9(5 use the machine on a moving or mobile surface or vehicle.
Ensure that all tires are in good condition and lug nuts are properly torqued.
'2127 operate the machine with the chassis trays open.
'2127 alter or disable the limit switches or machine components that in any way
affect safety and stability.
'2127 replace items critical to machine stability with items of different weight or
specification. '2127 modify or alter this machine without prior written permission
from the manufacturer.
'2127 use batteries that weigh less than the original equipment0LQLPXP weighW
RIHDFK9EDWWHU\LV kgIRUDWRWDOPLQLPXPRINJ. The 9batter\must
weigh a minimum of kg.
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'2127 sit, stand or climb on the platform guard rails. Maintain a firm footing on the
platform floor at all times.
'2127 exit the platform when elevated Keep the platform floor clear of debris.
'2127 fasten a fall restraint lanyard to an adjacent structure.
Ensure that all gates are properly closed and secured before operating the machine.
Operators must comply with employer and job site rules and governmental regulations
regarding the use of personal protective equipment.
Check for equipment, materials or other obstructions before moving.
Check for overhead obstructions before moving.
Check for crushing hazards when holding the platform rail before moving.
Be aware of limited sight distance and blind spots when driving or operating.
Be aware of extended platform position(s) when moving the machine.
Reduce travel speed when moving the machine on slopes, when near personnel and
obstacles, or when surface conditions are wet, slippery or otherwise limiting.
'2127 operate in the path of any crane unless the controls of the crane have been
locked out and/or precautions have been taken to prevent any possible collision.
Stunt driving and horseplay are PROHIBITTED.
Watch for personnel and obstructions below the platform when lowering the platform.
Keep hands and limbs out of scissors.
Use common sense and planning when operating the machine with the controller from
the ground. Maintain safe distances between the operator, the machine and fixed objects.
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'2127 operate the machine in hazardous locations or locations where potentially flammable or
explosive gases or particles may be present.
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• Conduct a thorough prestart inspection of the machine and test all functions before each
work shift to check for damage, malfunction and unauthorized modification. Tag and remove
adamaged, malfunctioning or modified machine from service. '2127use a damaged,
malfunctioning or modified machine.
• Routine maintenance must be performed by the operator before each work shift. Scheduled
maintenance must be performed by a qualified service technician at scheduled intervals. Tagand
remove from service any machine that has not had scheduled preventative maintenance
performed.
• Check that all safety and instructional decals are in place and undamaged.
• Check that the operator’s, safety and responsibilities manuals are present in the storage container
located in the platform. All manuals must be complete, undamaged and readable.
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'2127 operate the machine when there is a hydraulic fluid or air leak. Hydraulic fluid or air un-
der pressure can penetrate and/or burn skin.
• All compartments must remain closed and secure during machine operation. Improper
contact with components under any cover will cause serious injury. Only trained maintenance
personnel should access compartments. The operator should only access a compartment when
performing prestart inspection.
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• Read, understand and follow all warnings and instructions provided with the welding power unit.
'2127 connect weld leads or cables unless the welding power unit is turned off at the platform controls.
'2127 operate unless the weld cables are properly connected.
'2127 connect the ground lead to the platform.
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• Batteries contain acid. Always wear protective clothing and eye wear when working with batteries.
Avoid spilling or contacting battery acid. Neutralize battery acid spills with baking soda and water.
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• Keep sparks, flame and lighted tobacco away from batteries. Batteries emit explosive gas. Leave the
battery tray open while charging to avoid gas buildup.
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• Avoid contact with electrical terminals.
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Deck Extension
Main Platform Deck
Lift Cylinders
Beams
Chassis
Lower Controls
Module
Engine
Compartment
Outrigger
Fuel/ Hydraulic
Fluid Module
Platform Controls Deck Extension
Release Handle
Fuel Sight Gauge
Hydraulic Fluid Sight Gauge
Hydraulic Tank
Fuel Tank
Fuel/Fluid
Module
Hydraulic
Valve Block
Battery Disconnect
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Inspect the workplace and determine whether the workplace is suitable for safe machine operation. Do this
before moving the machine to the workplace.
Be sure the lift is the correct machine for the job.
Be aware of workplace conditions, and continue to watch for hazards while operating the machine.
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Before operating the machine, check the workplace for all possible hazards, including but not limited to:
•Drop-offs or holes, including those concealed by water, ice, mud, etc.
•Sloped, unstable or slippery surfaces
• Bumps, surface obstructions and debris
• Overhead obstructions and electrical conductors
• Other objects or equipment
• Hazardous locations and atmospheres
• Inadequate surface and support to withstand all load forces imposed by the machine
• Wind and weather conditions
• The presence of unauthorized personnel
• Other possible unsafe conditions
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'2127operate this machine until you have read and understood this manual, have performed the
Workplace Inspection, Prestart Inspection, Routine Maintenance, and have completed all the test
operations detailed in the Operating Instructions section.
This section provides instructions and tests for each function of machine operation. Follow all safety rules
and instructions. The operator must conduct inspections and a Functions Test of the machine before each
work shift to check that all machine systems are working properly.
Test the machine on a firm level surface with no debris, drop-offs, potholes or overhead obstructions.
Perform each step outlined in this section.
This machine shall only be operated by trained and authorized personnel. If multiple operators use this
machine, all must be trained, qualified and authorized to use it. New operators must perform a Pre-Start
Inspection and Functions. Test prior to operating the machine.
Operators must comply with all employer and job site rules and governmental regulations regarding the use
of personal protective equipment.
'2127 use a machine that is malfunctioning. If any function does not perform as described, tag the
machine and remove for repair by a qualified service technician.
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The operator must conduct a Functions Test of the machine before each work shift to check that all
machine systems are working properly.
Test the machine on a firm level surface with no debris, drop-offs, potholes or overhead obstructions.
Perform each step outlined in this section.
'2127 use a machine that is malfunctioning. If any function does not perform as described, tag the
machine and remove for repair by a qualified service technician.
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Perform Prestart Inspection (see page 26
Check base control Emergency Stop Switch - pull OUT to reset.
Check platform control Emergency Stop Switch - pull OUT to reset.
Check Battery Disconnect Switch in Control Module*Must be in ON position*
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Above 50°F (10°C) 5 s
50°F to 23°F (10°C to -5°C) 10 s
Below 50°F (-5°C) 20 s
20 Seconds = Limit of Continuous Use
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6WDUWLQJ(QJLQHIURP8SSHU&RQWURO%R[
2. Press and hold the START switch - release the switch when theHQJLQHVWDUWV
&ROG6WDUW
•Pressand hold the */2:3/8* switch as indicated in the Preheat table below.
•After the preheat time is completed UHOHDVHWKH*/2:3/8*VZLWFKDQGpress
the START switch –release the switch once the engine starts.
Be sure that the upper and lower EMERGENCY STOP Switches are reset (out).
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1. Turn Key Switch to the LEFT, selecting the PLATFORM position
. Press and hold the START switch - release the switch when theHQJLQHVWDUWV
.)RU&ROG6WDUWVHHDERYHORZHUFRQWUROVFROGVWDUWSURFHGXUH
1. Turn Key Switch to the RIGHT, selecting the BASE position
$OOIXQFWLRQVDUHQRZUHDG\IRUXVH
0DFKLQH8VHIURP/RZHU&RQWURO3DQHO
6LQFHWKHPDFKLQHGHULYHVLWVSRZHUIURPWKH%DWWHU\%DQN\RXFDQ
QRZVHOHFWDQ\IXQFWLRQRQWKHEDVHRUSODWIRUPFRQWUROVWRRSHUDWHWKH
PDFKLQH
(576HULHV6FLVVRU/LIWV2SHUDWRU¶V0DQXDO
Section
(576HULHVScissor Lifts - Operator’s Manua
l
3DJH
)XQFWLRQ7HVWVDQG2SHUDWLQJ,QVWUXFWLRQV
%DVH&RQWUROV2SHUDWLRQDQG7HVW
(OHYDWH3ODWIRUP
• Press and hold the LOWER / RAISE HQDEOHVwitch DQGSUHVVDQGKROGWKH
/,)7VZLWFK on the controlpanel to elevate the platform.
7HVW2SHUDWLRQ
• Elevate to maximum height.
1RWH)RU0RGHO(57RQO\WKHSl
latform will not elevate beyond
35 f
W
(10.6 m) without the outriggers
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• Releasing the/,)7 VZLWFKwill stop elevation.
• Pressing the Emergency Stop Switch will also stop elevation.
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&KHFNWKDWWKHDUHDDERYHDQGDURXQGWKHPDFKLQHLVFOHDUIURPREVWUXFWLRQV
HOHFWULFDOSRZHUOLQHVGHEULVKROHVDQGSHUVRQVEHIRUHRSHUDWLQJWKHPDFKLQH
Be sure that the upper and lower EMERGENCY STOP Switches are reset (out).
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Turn Key Switch to the RIGHT, selecting the BASE position
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• Press the EMERGENCY STOP switch at any time to stop all machine functions.
• Pull switch OUT to reset.
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/RZHU3ODWIRUP
• Press and hold the LOWER / RAISE HQDEOHswitch DQGSUHVVDQGKROGWKH
/2:(5VZLWFKRQWKHFRQWUROSDQHOWRORZHUWKHSODWIRUP until the desired
platform height is reached.
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• Lower the platform to the stowed position.
• Releaseing the switch will stop descent.
• Pressing the Emergency Stop Switch will stop descent.
This manual suits for next models
2
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