GMG 3394-RT, Service Manual

Page 1: ...SERVICE PACK 3394 RT 6094 RT 3394 RT serial 2339401000 Current 6094 RT serial 2609401000 Current November 2019 XXXXX...

Page 2: ...3394RT 6094RT Scissor Lifts Service Pack Page i Revision History Date Update Reason...

Page 3: ...5 cm 6 15 cm Height stowed rails lowered 122 3 09 m 92 2 33 m 128 3 25 m 97 2 46 m Length stowed 17 5 5 23 m 17 5 5 23 m Width 94 2 38 m 94 2 38 m Wheelbase 113 2 87 m 113 2 87 m Ground clearance cent...

Page 4: ...on alarm sounds Lift Drive interrupted Side and Side direction 4 Red light comes on alarm sounds Lift Drive interrupted 13 4m Height Fore and Aft direction 9 Red light comes on alarm sounds Lift Drive...

Page 5: ...ck 8 GP400 Menus on EZcal 9 Section 6 Electrical Schematic Drawing Schematic 22 Section 7 Hydraulic Schematic Drawing Schematic 24 Section 5 Troubleshooting Top Level Menu Options 10 Help Menu Options...

Page 6: ...umentation Your GMG Aerial Work Platform has been designed built and tested to provide safe dependable service Only authorized trained and qualified personnel should be allowed to operate or service t...

Page 7: ...ift 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...

Page 8: ...Section 3394RT 6094RT Scissor Lifts Service Pack Page 3 22 23 Platform Controls F L F L R L R L R R R R F R F R AUTO D 1 2 14 4 6 8 9 11 12 13 10 5 15 16 17 19 18 20 21 7 3 2 Component Locations...

Page 9: ...rear outrigger 13 RR Outrigger Switch Push UP and hold to raise the RIGHT rear outrigger 14 Joystick Drive Controls Forward and Reverse travel Lift Move toward operator to ELEVATE platform Lift speed...

Page 10: ...r Raise Switch Push UP and hold to RAISE platform Push DOWN and hold to LOWER the platform 6 Engine Start Switch Push UP and hold to start engine Push DOWN and hold to preheat engine 7 High Low Engine...

Page 11: ...ocedure to safely lower the platform Do not attempt to climb down beam scissors assembly Emergency Lowering The Emergency Lowering System is used to lower the platform in case of power or valve failur...

Page 12: ...diately Fluid leaks under pressure may not always be visible Check for pin hole leaks with a piece of cardboard not your hand Immediately report any damage defect unauthorized modification or malfunc...

Page 13: ...achine with the platform elevated without first blocking the scissor assembly using the maintenance lock Setting The Maintenance Lock 1 Elevate platform approximately 16 feet 5 m and rotate maintenanc...

Page 14: ...k or damaged component Wires disconnected broken or loose Motor control processor Diagnostic LED OFF LED should be ON Troubleshooting When the EZcal hand held device is connected to the GP400 control...

Page 15: ...LEVATED Displays current operating mode or interlock When current operating mode shows INTERLOCKED press ENTER to see the reason for the interlock press ESC to return to the current operating mode Dis...

Page 16: ...tional deck in switch pressed Displays ON indicating ground EMS is active DIAGNOSTICS INPUTS MENU OPTIONS P7 1 P7 2 P7 3 P7 4 Shows P7 1 input status normally valve supply ON always Shows P7 2 input s...

Page 17: ...OUTPUTS GP400 MONITORS SUB MENU OPTIONS MAIN SAFE SAFETOP Displays monitor of most GP400 outputs except P4 12 13 14 15 safe outputs Displays monitor of safe P4 12 13 14 15 outputs Displays monitor of...

Page 18: ...DIAGNOSTICS continued TRIGGER LOCKED The platform trigger switch was closed at power on or closed for too long with no function selected see SETUPS INTERLOCKS TRIGGERonly FORWARD REVERSE A platform d...

Page 19: ...WN to continue lowering after the delay time has passed If the armguard feature is not wanted set ADJUSTMENTS LIFT ARMGUARD HEIGHT to 101 BATTERY Battery voltage is too low or high to allow movement E...

Page 20: ...addition to the MODE displays detailed above the GP400 provides a HELP message display and associated flash code LED Various HELP messages can be displayed to indicate different conditions some messag...

Page 21: ...al calibration it is configured in a special factory override state In this state none of the normal shutdowns or interlocks will occur the scissor lift machine can be freely lifted lowered and driven...

Page 22: ...s close to B when the line contactor is off Check the line contactor tips are not welded check the power wiring for errors FAULT B STUD VOLTAGE TOO LOW 7 7 The voltage on the B stud of the controller...

Page 23: ...can stop movement for a configurable time see ADJUSTMENTS LIFT ARMGUARD to allow a safety check that no one is close to the machine The operator must release and then re select DOWN to continue loweri...

Page 24: ...tform overload features are active and the platform load is too low to be valid this could be caused by erroneous calibration a sensor fault or a change in the machine mechanics hydraulics see SETUPS...

Page 25: ...ibrate the GP400 When using the LED to attempt diagnosis please note that a DUAL FLASH code is indicated The LED will flash on off a certain number of times pause off for a short delay then flash on o...

Page 26: ...ent the height and or pressure sensor measurements are out of range or the elevation switch disagrees with the height sensor Check that the output from height and pressure sensors connected to P8 is i...

Page 27: ...Section 3394RT 6094RT Scissor Lifts Service Pack Page 22 6 Electrical Schematic Diagram Start Relay GP400 to ECU 60A B 5A 50A...

Page 28: ...3394RT 6094RT Scissor Lifts Service Pack Page 23 Notes...

Page 29: ...Section 3394RT 6094RT Scissor Lifts Service Pack Page 24 7 Hydraulic Schematic Diagram...

Page 30: ...3394RT 6094RT Scissor Lifts Service Pack Page 25 Notes...

Page 31: ...3428 Bullock Lane San Luis Obispo CA 93401 USA Tel USA 1 805 303 2066 Toll Free USA Canada 800 303 0499 www goGMG com GLOBAL MACHINERY GROUP INC...