WOOD'S POWR-GRIP MRT411LDC3 Operating Instructions Manual Download Page 1

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Rev 7.2/4-21

MRT4-DC3: #35068

INTENDED FOR USE BY SKILLED
PROFESSIONALS • READ AND

UNDERSTAND BEFORE OPERATING

OPERATING

INSTRUCTIONS

908 W. Main • P.O. Box 368

Laurel, MT USA 59044

800-548-7341 (phone)
406-628-8231 (phone)

406-628-8354 (fax)

www.WPG.com

Record serial number in blank space above (to locate, see serial
label on the product).

MANUAL
ROTATOR/TILTER,
DC-VOLTAGE WITH
INTELLI-GRIP® TECHNOLOGY

(Available with REMOTE CONTROL SYSTEM)

Model numbers: MRT411LDC3 (shown), MRT49DC3

KEEP FOR FUTURE REFERENCE

Summary of Contents for MRT411LDC3

Page 1: ... O Box 368 Laurel MT USA 59044 800 548 7341 phone 406 628 8231 phone 406 628 8354 fax www WPG com Record serial number in blank space above to locate see serial label on the product MANUAL ROTATOR TILTER DC VOLTAGE WITH INTELLI GRIP TECHNOLOGY Available with REMOTE CONTROL SYSTEM Model numbers MRT411LDC3 shown MRT49DC3 KEEP FOR FUTURE REFERENCE ...

Page 2: ...MRT4 DC3 35068 Rev 7 2 4 21 2 ...

Page 3: ...ng a Screen Language 14 Performing Inspections and Tests 15 Checking the 12 Volt Battery 15 Preparing to Use the Remote Control System 16 TO ATTACH THE PADS TO A LOAD 17 Positioning the Lifter on the Load 17 Powering up the Lifter 18 Sealing the Pads on the Load 18 Reading the Vacuum Gauges 19 TO LIFT AND MOVE THE LOAD 20 Interpreting the Lift Light 20 Watching Vacuum Indicators 20 Controlling the...

Page 4: ...m Test 30 Rated Load Test 31 Remote Control System Test 31 MAINTENANCE 32 VACUUM PAD MAINTENANCE 32 Pad to Load Friction Coefficient 32 Pad Inspection 32 Pad Cleaning 33 12 VOLT BATTERY RECHARGE 34 NOTIFICATION BUZZER BATTERY REPLACEMENT 35 INTELLI GRIP DIAGNOSTIC CODES 36 REPLACEMENT PARTS 40 LIMITED WARRANTY 41 TO OBTAIN REPAIRS OR WARRANTY SERVICE 41 TABLE OF CONTENTS ...

Page 5: ...ach use see definition under Rated Load Test Per pad 125 lbs 56 5 kg Total 500 lbs 225 kg Per pad 175 lbs 80 kg Total 700 lbs 320 kg Lifter Weight 125 lbs 57 kg Power System 12 volts DC 5 5 amps Battery Capacity 7 amp hours Rotation Capability Manual 360 with latching at each turn when required Tilt Capability Manual 90 with automatic locking in vertical position Product Options Available with Rem...

Page 6: ...MRT4 DC3 35068 Rev 7 2 4 21 4 SPECIFICATIONS Note A standard MRT411LDC3 is shown ...

Page 7: ...fter if the Maximum Load Capacity or any safety label appears to be missing or obscured Make sure the contact surfaces of the load and vacuum pads are clean before attaching the lifter see MAINTENANCE Position the vacuum pads correctly on the load before lifting see OPERATION Positioning the Lifter on the Load Do not lift a load if any vacuum indicator shows inadequate vacuum Keep unauthorized per...

Page 8: ...UUM SENSORS 13 NOTIFICATION BUZZER 14 VACUUM LIFT LIGHT 15 AIR FILTER 16 VACUUM GAUGES 17 STROBE LIGHT 18 CONTROL HANDLE 19 VACUUM RESERVE TANKS 20 VACUUM PAD with MOVABLE PAD MOUNT 21 PAD FRAME 22 ROTATION RELEASE LEVER 23 TILT RELEASE LEVER 24 LIFT BAR Not shown EXTENSION ARMS Note A standard MRT411LDC3 is shown Although some of the following photos do not show this specific lifter they all illu...

Page 9: ...Weight Note Any lifter use must comply with all statutory or regulatory standards for hoisting equipment in your region 2 2 Disengage any tilt locks or latches and raise the lift bar figs 2A C 2 3 Attach the hoisting hook to the lift point figs 2D E 2D 2E Make sure hook has restraining latch circled 2F Only use rigging rated for Maximum Load Capacity plus Lifter Weight Use rigging fig 2F as needed...

Page 10: ... the electrical connectors figs 3A B and figs 3C D Install the 9 volt battery for the notification buzzer as directed in NOTIFICATION BUZZER BATTERY REPLACEMENT 4 4A Assemble the pad frame for optimal load support see TO CHANGE THE PAD FRAME CONFIGURATION Remove the pad covers fig 4A and save them for future use 5 Perform tests as required under TESTING ASSEMBLY ...

Page 11: ...Rev 7 2 4 21 MRT4 DC3 35068 9 TO CHANGE THE PAD FRAME CONFIGURATION ASSEMBLY ...

Page 12: ...maximize support across the load surface and to minimize load overhang see LOAD CHARACTERISTICS 2 Install or remove the extension arms and reposition the movable pad mounts as needed Installing Removing Extension Arms and Repositioning Vacuum Pads 1 4A 4B 3B 2A 3A 1A Remove the cotterless hitch pin circled in fig 1A that secures the movable pad mount to the pad frame 2 Remove the vacuum pad from t...

Page 13: ...Rev 7 2 4 21 MRT4 DC3 35068 11 Using Secondary Rotation Stops Align the secondary rotation stops for correct use of the pad frame in long narrow configurations ASSEMBLY ...

Page 14: ...andard vacuum pads can stain or deform load surfaces with light colors or soft coatings Test such surfaces for damaging effects before using the lifter on them 6 1 Although concave vacuum pads can also attach to some curved loads curvature can reduce lifting capacity Contact WPG for more information 2 A single piece of material includes curtainwall assemblies unitized glazing systems and similar c...

Page 15: ...Operating Temperatures 1 2 The lifter is not designed to be watertight Moisture can result in reduced lifting capacity Do not use it in rain or other unsuitable conditions DISPOSAL OF THE LIFTER After the Service Life of the vacuum lifter has ended see SPECIFICATIONS dispose of it in compliance with all local codes and applicable regulatory standards Note Special disposal regulations may apply to ...

Page 16: ...ds for lifter operation in your region Follow trade association guidelines about precautions needed for each load material Selecting a Screen Language When the lifter is powered up for the first time the Intelli Grip control unit prompts the operator to select a language for the LCD screen Use the buttons as follows To scroll down press the release button To scroll up press the attach button To se...

Page 17: ...ange discontinue lifter use and charge the battery see 12 VOLT BATTERY RECHARGE If battery energy continues to decrease and you try to attach the lifter to a load the notification buzzer will sound continuously and the LCD screen will display Lockout low 12V battery along with a diagnostic code see INTELLI GRIP DIAGNOSTIC CODES In this case you must charge the battery in order to continue using th...

Page 18: ...e status of the lifter and load prior to lifting Make sure nearby personnel are aware of intended remote control actions Monitor the lifter at all times to make sure it is functioning as intended 1 Be sure the load is lowered and supported correctly before releasing it see following sections Note To prevent any radio transmission press the emergency disconnect button 2 1 The Remote Control System ...

Page 19: ...load fig 1A 1 1 2A Make sure all vacuum pads will fit on the load and will be loaded evenly fig 2A Consult the Per Pad Load Capacity 2 Place the vacuum pads in contact with the load surface 1 The lifter is designed to handle the maximum load weight when the load s center of gravity is positioned within 2 5 cm of the lifter s rotation axis Uncentered loads may rotate or tilt unexpectedly as applica...

Page 20: ...attery and the buzzer chirps once per minute Replace the battery as needed see NOTIFICATION BUZZER BATTERY REPLACEMENT 1B To use the optional Remote Control System briefly hold the power button fig 1B on the radio transmitter to activate it 1 1C Note When you hold any button on the transmitter the transmission indicator light flashes green if the transmitter is activated Sealing the Pads on the Lo...

Page 21: ... is sufficient to lift the maximum load weight fig 1A Red range 16 Hg 54 kPa Vacuum level is not sufficient to lift the maximum load weight fig 1B 2 If it takes more than 5 seconds for the vacuum level to reach 5 Hg 17 kPa on either vacuum gauge press on any vacuum pad that has not yet sealed Once the pads have sealed the lifter should be able to maintain sufficient vacuum for lifting except when ...

Page 22: ...er than normal the notification buzzer chirps and the LCD screen displays the message Vacuum decrease on circuit along with a diagnostic code see INTELLI GRIP DIAGNOSTIC CODES 1 Such leaks can cause the battery to be discharged more quickly If the vacuum pump is unable to overcome leakage the notification buzzer sounds continuously the lift light turns off and the LCD screen displays the message I...

Page 23: ...enough clearance you may move the load as required In Case of a Power Failure In the event of a battery failure or electrical system failure the notification buzzer will sound continuously Although the vacuum reserve tanks are designed to support the load for at least 5 minutes without power this depends on many factors including the LOAD CHARACTERISTICS and the condition of vacuum pads see VACUUM...

Page 24: ...tacting anyone or anything 2 Use the control handle circled in fig 2A to keep the load under control at all times Unbalanced loads may rotate unexpectedly when rotation latch is disengaged 3 Pull the rotation release lever fig 3A to disengage the rotation latch and rotate the load as required 4 To stop load motion let go of the rotation release lever and guide the load to the next stop Note Whenev...

Page 25: ...learance to tilt without contacting anyone or anything 2 Use the control handle circled in fig 2A to keep the load under control at all times Unbalanced loads may tilt unexpectedly when tilt latch is disengaged 3 If the pad frame is latched pull the tilt release lever fig 3A to disengage the tilt latch Note The pad frame automatically latches when tilted to the vertical position 4 Tilt the load as...

Page 26: ...v 7 2 4 21 24 A load with overhang may force you to release the control handle as the load approaches the flat position In this case use hand cups circled in fig 1A or other appropriate means to control the load OPERATION ...

Page 27: ... may be releasing the load 2 Do not move lifter until pads release completely because such movement could result in load damage or personal injury Continue to hold the function and release buttons until the vacuum pads release the load completely Otherwise the vacuum lifter will automatically revert to attach mode 1 After the load is successfully released the lifter activates the Power Save mode a...

Page 28: ... could soil or damage vacuum pads Transporting the Lifter Secure the lifter in the original shipping container with the original shipping materials or equivalent Storing the Lifter 1 1B Use the covers supplied to keep the vacuum pads clean fig 1B CE To prevent the lifter from tipping over on relatively horizontal surfaces place the vacuum pads facedown on a clean smooth flat surface Then lower the...

Page 29: ... 3B 3D 3E 3C Disconnect the electrical connectors figs 3A B and figs 3C E to prevent battery discharge 4 Store the lifter in a clean dry location Store the battery between 32 and 70 F 0 21 C Avoid storage above 100 F 38 C 3A OPERATION ...

Page 30: ...Test Check for unusual vibrations or noises while operating lifter Perform Remote Control System Test Examine entire lifter for evidence of looseness excessive wear or excessive corrosion deformation cracks dents to structural or functional components cuts in vacuum pads or hoses any other hazardous conditions Inspect entire electrical system for damage wear or contamination that could be hazardou...

Page 31: ...hirps rapidly and the strobe light flashes 6 Take precautions in case load should fall during test Raise the load a minimal distance to make sure it is supported by the lifter 7 Watch each vacuum gauge Starting from a vacuum level of 16 Hg 54 kPa the lifter must maintain a vacuum level greater than 12 Hg 41 kPa for 5 minutes 3 If not lifting this load requires additional precautions eg a load slin...

Page 32: ...uld fall during test Raise the load a minimal distance Then hold the function button and the power button for at least 5 seconds to power down the lifter 2 5 Watch the vacuum gauges The vacuum level should not decrease by more than 4 Hg 14 kPa in 5 minutes 6 Lower the load after 5 minutes or whenever a lifter fails the test and release the load as previously directed 7 Never use lifter that has fa...

Page 33: ...nctions 3 Vary the transmitter s direction and distance from the lifter to make sure transmissions are effective 4 If the Remote Control System is not functioning correctly the battery for the radio transmitter may need to be replaced or metal or other electrically conductive surfaces may be causing radio interference Reposition the transmitter to transmit signals effectively If the problem persis...

Page 34: ... pads Replace pads every 2 years or more often when necessary Pad Inspection 1A Inspect each vacuum pad fig 1A according to the INSPECTION SCHEDULE and correct the following faults before using the lifter see REPLACEMENT PARTS when applicable Contaminates on the face item 1 in fig 1A or sealing edges item 2 in fig 1A Filter screen item 3 in fig 1A missing from face Replace any pad that has damaged...

Page 35: ... use rubber conditioners on vacuum pad Many rubber conditioners can leave a hazardous film on vacuum pads 2 Prevent liquid from entering the vacuum system through the suction hole on the pad face 3 Wipe each pad face clean using a clean sponge or lint free cloth to apply the cleanser 1 4 Allow each pad to dry completely before using the lifter 1 A brush with bristles that do not harm rubber can he...

Page 36: ...cted to battery reconnect charger see ASSEMBLY Error lamp turns on immediately Battery leads connected to the wrong poles reverse battery leads Charging stops at either stage 1 or stage 4 and error lamp turns on Battery is no longer functioning replace battery see REPLACEMENT PARTS Before you return the lifter to service recheck the battery as previously directed 1 You may use a battery charger ot...

Page 37: ...he buzzer battery holder by pressing inward and sideward in the direction marked on the holder 3 3A Slide the battery tray out fig 3A 4 Install a new 9 volt battery according to the polarity markings 5 Slide the battery tray back into position 6 Power up the lifter again to test the new battery MAINTENANCE ...

Page 38: ...be activated in error if battery charger is plugged into power source while lifter is powered up If so power down lifter disconnect charger from power source and power up again If code persists check battery condition as directed above B03 Charge 12V battery soon 1 chirp per minute none Charge 12 volt battery see 12 VOLT BATTERY RECHARGE B09 Replace 9V battery 1 chirp per minute none Replace 9V ba...

Page 39: ... Failed to turn controls power off 1 chirp every 2 seconds none Remove 9V battery Disconnect connector between 12V battery and vacuum generating system Charge battery completely see 12 VOLT BATTERY RECHARGE Then reconnect battery and try to power down again If code persists disconnect connector Service is required N05 Unable to turn module power on 1 chirp every 2 seconds none Charge 12V battery s...

Page 40: ...nning and try again V000 INSUFFICIENT VACUUM continuous on Immediately lower load onto stable support until adequate vacuum can be obtained Check load and vacuum pads for damage Consult relevant topics in ASSEMBLY OPERATION INSPECTIONS AND TESTS and MAINTENANCE V001 V002 V003 V004 INSUFFICIENT VACUUM indicates relevant vacuum circuit continuous on Immediately lower load onto stable support until a...

Page 41: ...ectors are attached correctly V050 DANGER INSUFFICIENT VACUUM continuous on Vacuum levels in BOTH circuits are insufficient for lifting Keep everyone away from suspended load until it can be safely lowered to a stable support Service is required V081 V082 V083 V084 Sensor error low indicates relevant vacuum circuit continuous in attach mode none Vacuum sensor malfunction in vacuum circuit indicate...

Page 42: ...Pad Mount 2 1 2 Tubing Size 4 54382NC Power Lead 1 53134AZ Hose Fitting Elbow 5 32 ID 4 53122 Pad Fitting Elbow 5 32 ID 4 49646T Vacuum Pad Model G3370 11 28 cm Diameter Lipped 4 49506TA Vacuum Pad Model VPFS9 9 23 cm Diameter 4 49180 End Plug 3 x 3 x 1 4 Tubing Size 1 49150 End Plug 2 1 2 x 2 1 2 x 1 4 Tubing Size 4 36106 Service Manual 12 V DC Dual Vacuum System Intelli Grip 1 29353 Pad Cover 4 ...

Page 43: ...wear and tear and or the product has been damaged misused or neglected If a problem is not covered under warranty WPG will notify the customer of costs prior to repair If the customer agrees to pay all repair costs and to receive the repaired product on a C O D basis then WPG will proceed with repairs TO OBTAIN REPAIRS OR WARRANTY SERVICE For purchases in North America Contact the WPG Technical Se...

Page 44: ... SKILLED TECHNICAL PROFESSIONALS READ AND UNDERSTAND BEFORE ROUTING WIRING AND OR ASSEMBLING Model numbers MRT49DC3 MRT411LDC3 MANUAL ROTATOR TILTER DC VOLTAGE WITH INTELLI GRIP TECHNOLOGY 908 W Main P O Box 368 Laurel MT USA 59044 800 548 7341 phone 406 628 8231 phone 406 628 8354 fax www WPG com ...

Page 45: ...MRT4 DC3 35068 Rev 7 2 4 21 44 ...

Page 46: ...Rev 7 2 4 21 MRT4 DC3 35068 45 ...

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