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KEEP FOR FUTURE REFERENCE
OPERATING
INSTRUCTIONS
INTENDED FOR USE BY SKILLED
PROFESSIONALS • READ AND
UNDERSTAND BEFORE OPERATING
MANUAL
ROTATOR/TILTER,
DC-VOLTAGE
Model numbers: MRT411LDC (shown), MRT49DC
Record serial number in blank space above (to locate, see serial
Rev 29.4/1-22
label on the product).
1
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
MRT4-DC: #35070
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Summary of Contents for WPG MRT4 Series
- Page 1 INSTRUCTIONS 908 W. Main • P.O. Box 368 Laurel, MT USA 59044 800-548-7341 (phone) 406-628-8231 (phone) 406-628-8354 (fax) INTENDED FOR USE BY SKILLED www.WPG.com PROFESSIONALS • READ AND UNDERSTAND BEFORE OPERATING MANUAL ROTATOR/TILTER, DC-VOLTAGE Model numbers: MRT411LDC (shown), MRT49DC Record serial number in blank space above (to locate, see serial Rev 29.4/1-22...
- Page 2 Rev 29.4/2-22 MRT4-DC: #35070...
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Page 3: Table Of Contents
TABLE OF CONTENTS SPECIFICATIONS ..................3 SAFETY....................5 OPERATING FEATURES................6 ASSEMBLY....................7 ..........9 HANGE THE RAME ONFIGURATION Installing/Removing Extension Arms and Repositioning Vacuum Pads ......10 Using Secondary Rotation Stops ..................11 INTENDED USE ..................12 ................12 HARACTERISTICS ................13 PERATING NVIRONMENT ................13 ISPOSAL OF THE IFTER OPERATION..................14 ................14 EFORE... - Page 4 TABLE OF CONTENTS INSPECTIONS AND TESTS..............26 ................26 NSPECTION CHEDULE ....................27 ESTING Lifter/Load Compatibility Test...................27 Operational Tests ......................28 Vacuum Test........................28 Rated Load Test.........................29 MAINTENANCE ..................30 ...............30 ACUUM AINTENANCE Pad-to-Load Friction Coefficient ..................30 Pad Inspection ........................30 Pad Cleaning ........................31 ..................32 ATTERY ECHARGE REPLACEMENT PARTS................33 LIMITED WARRANTY ................34 ...........34...
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Page 5: Specifications
4..Vacuum pads, filter elements and other wear-out items are excluded. 5..To view this guide, click the link at right. Additionally, you can search for your lifter's Model Number at www.wpg.com and select the “Troubleshooting” link on the product page. - Page 6 SPECIFICATIONS Note: A standard MRT411LDC3 is shown. Rev 29.4/2-22 MRT4-DC: #35070...
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Page 7: Safety
SAFETY Wear personal protective Make sure the contact surfaces of equipment that is appropriate for the load and vacuum pad are clean the load material. Follow trade before attaching the lifter (see association guidelines. “MAINTENANCE”). Do not remove or obscure safety Position the vacuum pads correctly labels. -
Page 8: Operating Features
OPERATING FEATURES Features shown here are underlined on their first appearance in each section following. INSTRUCTIONS CANISTER TILT RELEASE LEVER Enclosure w/ VACUUM SWITCH LOW VACUUM WARNING LIGHT BATTERY GAUGE BATTERY TEST BUTTON AIR FILTER LOW VACUUM WARNING BUZZER (optional) VALVE HANDLE VACUUM GAUGE ROTATION WEAR PLATE... -
Page 9: Assembly
ASSEMBLY Remove all shipping materials and save them with the shipping container for future use. 2) Suspend the lifter from appropriate hoisting equipment: 2.1) Select a crane and/or hoist rated for the Maximum Load Capacity plus the Lifter Weight. Note: Any lifter use must comply with all statutory or regulatory standards for hoisting equipment in your region. - Page 10 ASSEMBLY 2.4) Use the hoisting equipment to remove the lifter from the shipping container. Avoid damaging the vacuum pads. Connect the electrical connectors (figs. 3A-B and figs. 3C-D). Assemble the pad frame for optimal load support (see “T ”). Remove HANGE THE RAME ONFIGURATION...
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Page 11: T O Change The Pad Frame Configuration
ASSEMBLY HANGE THE RAME ONFIGURATION Rev 29.4/2-22 MRT4-DC: #35070... -
Page 12: Installing/Removing Extension Arms And Repositioning Vacuum Pads
ASSEMBLY Various pad frame configurations enable the lifter to match different load dimensions. The illustrations on the preceding page show all approved configurations. Dimensions show Pad Spread for a standard MRT411LDC lifter (see “SPECIFICATIONS” for other models). Choose an approved configuration to Use only approved pad frame maximize support across the load configurations. -
Page 13: Using Secondary Rotation Stops
ASSEMBLY Using Secondary Rotation Stops Align the secondary rotation stops for correct use of the pad frame in long, narrow configurations. Rev 29.4/2-22 MRT4-DC: #35070... -
Page 14: Intended Use
2..A “single piece” of material includes curtainwall assemblies, unitized glazing systems and similar construction units. 3..Vacuum pads made from a heat-resistant rubber compound can enable you to lift loads with higher surface temperatures. Contact WPG or an authorized dealer for more information. -
Page 15: Operating Environment
1..Although lifter use may be possible at higher elevation, lifting capacity is reduced whenever the lifter is unable to attain vacuum in the green range on the vacuum gauge. Contact WPG for more information. 2..Special provisions may allow the lifter to operate outside the specified temperature range. Contact WPG for more information. Rev 29.4/2-22... -
Page 16: Operation
OPERATION EFORE SING THE IFTER Determine whether the vacuum lifter is capable of each intended task (see “SPECIFICATIONS” “INTENDED USE”). Then complete the following preparations: Taking Safety Precautions • Be trained in all industry Read all directions and safety rules before using and regulatory standards lifter. -
Page 17: Checking The Battery
OPERATION Checking the Battery Always check battery energy before every lift. Use the battery gauge to determine whether the battery needs to be charged (see ). Never use the lifter unless battery energy appears in the green range. • While the valve handle is in the “attach” position ( / power on), the battery gauge automatically shows battery energy. -
Page 18: T O Use The Optional Pad Shutoffs
OPERATION SE THE PTIONAL HUTOFFS Each pad shutoff on the pad frame controls the vacuum line to the adjacent vacuum pad. Activating or deactivating the airflow at specific pads enables the lifter to handle loads with different weights and dimensions (see “SPECIFICATIONS”) or to avoid holes in the load surface. To support the maximum load weight and larger load Closing any pad shutoff dimensions, all pads must be activated;... -
Page 19: T O Attach The Pads To A Load
OPERATION TTACH THE ADS TO A Make sure the contact surfaces of the load and vacuum pads are clean (see “Pad Cleaning”). Positioning the Lifter on the Load Center the pad frame on the load (fig. 1A). Make sure all vacuum pads will fit on the load and will be loaded evenly (fig. -
Page 20: Sealing The Pads On The Load
1..Although a vacuum pad may become distorted during shipping or storage, this condition should correct itself with continued use. 2..If the lifter is used above the maximum Operating Elevation (see “SPECIFICATIONS”), it may not be able to maintain sufficient vacuum for lifting. Contact WPG for more information. Rev 29.4/2-22... -
Page 21: T O Lift And Move The Load
OPERATION IFT AND OVE THE Lift bar must be vertical to lift load. Interpreting the Warning Light and Optional Warning Buzzer When vacuum is Never lift load unless warning devices turn off, because sufficient to lift the this could result in load release and personal injury. Maximum Load Capacity, the vacuum pump and the low vacuum warning light turn off temporarily, to conserve battery energy. -
Page 22: Controlling The Lifter And Load
OPERATION Controlling the Lifter and Load When the lifter is ready, use the hoisting equipment to raise the lifter and load as needed. Use a control handle (circled in fig. 1A) to keep the lifter and load in the required position. Once there is enough clearance, you may move the load as required. -
Page 23: T O Rotate The Load
OPERATION OTATE THE Make sure load is positioned correctly on lifter (as previously directed). Never disengage rotation and tilt latches at the same time, because this could result in load damage or personal injury. Make sure the load has enough clearance to rotate without contacting anyone or anything. -
Page 24: T O Tilt The Load
OPERATION ILT THE Make sure load is positioned correctly on lifter (as previously directed). Never disengage rotation and tilt latches at the same time, because this could result in load damage or personal injury. Make sure the load has enough clearance to tilt without contacting anyone or anything. - Page 25 OPERATION 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. Rev 29.4/2-22 MRT4-DC: #35070...
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Page 26: T O Release The Pads From The Load
OPERATION ELEASE THE ADS FROM THE Make sure load is at rest and fully supported before releasing vacuum pads. 1) Press the lever to release the latch and push the valve handle inward (fig. 1A) to the “release” position ( ). Do not move lifter until pad releasespads release completely, because such movement could result in load damage or personal injury. -
Page 27: Transporting The Lifter
OPERATION 3) 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]. Transporting the Lifter Secure the lifter in the original shipping container with the original shipping materials or equivalent. -
Page 28: Inspections And Tests
2..The Periodic Inspection is also required whenever the lifter has been out of service for 1 year or more. Keep a written record of all Periodic Inspections. If necessary, return the lifter to WPG or an authorized dealer for repair (see “LIMITED... -
Page 29: Testing
12" Hg [-41 kPa] for 5 minutes. If not, lifting this load requires additional precautions (eg, a load sling). Contact WPG for more information. 8) Lower the load after 5 minutes or before the vacuum level diminishes to 12" Hg [-41 kPa]. -
Page 30: Operational Tests
INSPECTIONS AND TESTS Perform the following tests before placing the lifter in service initially, following any repair, when directed in the “I ”, or whenever necessary: NSPECTION CHEDULE Operational Tests Test all features and functions of the lifter (see “OPERATING FEATURES” and “OPERATION”). Vacuum Test 1) Clean the face of each vacuum pad (see “Pad... -
Page 31: Rated Load Test
7) Prepare a written report of the test and keep it on file. 1..An equivalent simulation may also be used. Contact WPG for more information. 2..A “qualified person” has successfully demonstrated the ability to solve problems relating to the subject matter and work, either by possessing a recognized degree in an applicable field or a certificate of professional standing, or by possessing extensive knowledge, training and experience. -
Page 32: Maintenance
MAINTENANCE Note: Refer to SERVICE MANUAL #36110 when applicable. ACUUM AINTENANCE Pad-to-Load Friction Coefficient The friction coefficient represents the lifter's ability to resist load slippage. The Maximum Load Capacity is based on a friction coefficient of 1, as determined by testing of clean, new, standard rubber vacuum pads on clean, dry, regular glass. -
Page 33: Pad Cleaning
4) Allow each pad to dry completely before using the lifter. 1..A brush with bristles that do not harm rubber can help remove contaminates clinging to sealing edges. If these cleaning methods are not successful, contact WPG or an authorized dealer for assistance. Rev 29.4/2-22... -
Page 34: Battery Recharge
MAINTENANCE ATTERY ECHARGE Charge the battery whenever the battery gauge shows reduced energy. Caution: Make sure valve handle is in “release” position ( / power off). Identify the input voltage marked on the battery Make sure power source has charger, and plug it in to an appropriate power ground fault circuit interrupter. -
Page 35: Replacement Parts
Shoulder Bolt ‒ Socket Head ‒ 5/16" x 1/2" x 1/4-20 Thread (for mounting pads) *Length as required; sold by the foot (approx. 30.5 cm). SERVICE MANUAL #36110 for additional parts. ERVICE ONLY WITH IDENTICAL REPLACEMENT PARTS WPG.COM AVAILABLE AT OR THROUGH AN AUTHORIZED DEALER Rev 29.4/2-22... -
Page 36: Limited Warranty
Contact the WPG Technical Service Department. When factory service is required, ship the complete product – prepaid – along with your name, address and phone number to the street address listed at the bottom of this page. WPG may be reached by phone or fax numbers listed below. - Page 37 Rev 29.4/2-22 MRT4-DC: #35070...
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