WOOD'S POWR-GRIP MRT411LDC3 User manual

Rev 7.2/4-21 MRT4-DC3: #350681
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

MRT4-DC3: #35068 Rev 7.2/4-212

Rev 7.2/4-21 MRT4-DC3: #350681
SPECIFICATIONS .....................................................................................3
SAFETY...................................................................................................5
OPERATING FEATURES............................................................................6
ASSEMBLY..............................................................................................7
TOCHANGE THE PAD FRAME CONFIGURATION ..................................................9
Installing/Removing Extension Arms and Repositioning Vacuum Pads ............................10
Using Secondary Rotation Stops .......................................................................................11
INTENDED USE .....................................................................................12
LOAD CHARACTERISTICS...............................................................................12
OPERATING ENVIRONMENT..........................................................................13
DISPOSAL OF THE LIFTER .............................................................................13
OPERATION..........................................................................................14
BEFORE USING THE LIFTER...........................................................................14
Taking Safety Precautions .................................................................................................14
Selecting a Screen Language.............................................................................................14
Performing Inspections and Tests .....................................................................................15
Checking the 12-Volt Battery ............................................................................................15
Preparing to Use the Remote Control System ..................................................................16
TOATTACH THE PADS TO ALOAD ..................................................................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
TOLIFT AND MOVE THE LOAD .....................................................................20
Interpreting the Lift Light..................................................................................................20
Watching Vacuum Indicators ............................................................................................20
Controlling the Lifter and Load .........................................................................................21
In Case of a Power Failure.................................................................................................21
TOROTATE THE LOAD .................................................................................22
TOTILT THE LOAD ......................................................................................23
TORELEASE THE PADS FROM THE LOAD .........................................................25
AFTER USING THE LIFTER.............................................................................26
Transporting the Lifter ......................................................................................................26
TABLE OF CONTENTS

MRT4-DC3: #35068 Rev 7.2/4-212
Storing the Lifter ...............................................................................................................26
INSPECTIONS AND TESTS......................................................................28
INSPECTION SCHEDULE ................................................................................28
TESTING ...................................................................................................29
Lifter/Load Compatibility Test...........................................................................................29
Operational Tests ..............................................................................................................30
Vacuum 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
TOOBTAIN REPAIRS OR WARRANTY SERVICE...................................................41
TABLE OF CONTENTS

Product
Description
Designed for use with hoisting equipment, MRT4-DC3 lifters support loads using vacuum and manipulate
loads using manual 360° rotation and manual 90° tilt motions.
Model
Number MRT49DC3 MRT411LDC3
Vacuum Pads
(4 each, standard rubber1
1...... Available with other rubber compounds for special purposes (see www.wpg.com).
)
9" [23 cm] nominal diameter
(Model VPFS9)
11" [28 cm] nom. diameter, lipped
(Model G3370)
Pad Spread2
2...... The illustrations under “TOCHANGE THE PAD FRAME CONFIGURATION”show the Pad Spread for all approved MRT411LDC(3) pad frame configurations.
---------------------------- (to outer edges) ----------------------------
Length — Maximum 75¼" [192 cm] 78¼" [199 cm]
Length — Minimum 29¾" [76 cm] 32¾" [83 cm]
Width — Maximum 46½" [119 cm] 49½" [126 cm]
Width — Minimum 12¾" [33 cm] 15¾" [40 cm]
Maximum
Load Capacity3
3...... The Maximum Load Capacity is rated at a vacuum of 16" Hg [-54 kPa] on clean, smooth, nonporous flat surfaces with a friction coefficient of 1. Pad
compound, load rigidity, strength, surface conditions, overhang, angle, center of gravity and temperature can also affect the lifting capacity. A “qualified
person” should evaluate the effective lifting capacity for each 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 ¼ turn (when required)
Tilt
Capability Manual, 90°, with automatic locking in vertical position
Product
Options
Available with Remote Control System – FCC, CE and ICC certified.
See separate instructions about other options.
Operating
Elevation Up to 6,000' [1,828 m]
Operating
Temperatures 32° — 104° F [0° — 40° C]
Service
Life 20,000 lifting cycles, when used and maintained as intended4
4...... Vacuum pads, filter elements and other wear-out items are excluded.
Software
Version Intelli-Grip®7.6
ASME Standard
BTH-1 Design Category "B", Service Class "0" (see www.wpg.com for more information)
Troubleshooting
Guide5
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.
TST-021_DC3_REV_2018-023
Rev 7.2/4-21 MRT4-DC3: #350683
!!–CE–!! This symbol appears only when a CE Standard is different from other applicable standards. CE requirements are mandatory
in the European Union, but may be optional elsewhere.
SPECIFICATIONS