WPG MRPTHD89AC User manual

Rev 1.0/2-21 MRPTHD-AC: #350661
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 /
POWER TILTER,
HIGH-DUTY VERSION,
AC-VOLTAGE
Model numbers: MRPTHD89AC,
MRPTHD1211LAC (shown), MRPTHD2011LAC
KEEP FOR FUTURE REFERENCE

MRPTHD-AC: #35066 Rev 1.0/2-212

Rev 1.0/2-21 MRPTHD-AC: #350661
SPECIFICATIONS .....................................................................................3
SAFETY...................................................................................................6
OPERATING FEATURES............................................................................7
ASSEMBLY..............................................................................................8
TOCHANGE THE PAD FRAME CONFIGURATION ................................................10
Removing Parking Stands..................................................................................................11
Extending/Retracting Telescoping Pad Arms ....................................................................12
Connecting/Disconnecting Vacuum Hoses.......................................................................13
INTENDED USE .....................................................................................14
LOAD CHARACTERISTICS...............................................................................14
OPERATING ENVIRONMENT..........................................................................15
DISPOSAL OF THE LIFTER .............................................................................15
OPERATION..........................................................................................16
BEFORE USING THE LIFTER...........................................................................16
Taking Safety Precautions .................................................................................................16
Performing Inspections and Tests .....................................................................................16
TOATTACH THE PADS TO ALOAD ..................................................................17
Generating Airflow............................................................................................................17
Positioning the Lifter on the Load.....................................................................................17
Reading the Vacuum Gauge..............................................................................................18
TOLIFT AND MOVE THE LOAD......................................................................19
Interpreting the Lift Light..................................................................................................19
Watching Vacuum Indicators ............................................................................................19
Controlling the Lifter and Load .........................................................................................19
In Case of a Power Failure.................................................................................................20
TOROTATE THE LOAD .................................................................................21
TOTILT THE LOAD ......................................................................................22
TORELEASE THE PADS FROM THE LOAD .........................................................23
AFTER USING THE LIFTER.............................................................................23
Storing the Lifter ...............................................................................................................24
Transporting the Lifter ......................................................................................................24
INSPECTIONS AND TESTS......................................................................25
TABLE OF CONTENTS

MRPTHD-AC: #35066 Rev 1.0/2-212
INSPECTION SCHEDULE ................................................................................25
TESTING ...................................................................................................26
Lifter/Load Compatibility Test...........................................................................................26
Operational Tests ..............................................................................................................27
Vacuum Test......................................................................................................................27
Rated Load Test.................................................................................................................28
MAINTENANCE ....................................................................................29
VACUUM PAD MAINTENANCE.......................................................................29
Pad-to-Load Friction Coefficient .......................................................................................29
Pad Inspection ..................................................................................................................29
Pad Cleaning .....................................................................................................................30
REPLACEMENT PARTS...........................................................................31
LIMITED WARRANTY ............................................................................32
TOOBTAIN REPAIRS OR WARRANTY SERVICE...................................................32
TABLE OF CONTENTS

Product
Description
Designed for use with hoisting equipment, the MRPTHD-AC lifters support loads using vacuum and
manipulate loads using manual 360° rotation and powered 90° tilt motions.
Model
Number MRPTHD89AC MRPTHD1211LAC MRPTHD2011LAC
Vacuum Pads
(standard rubber1
1...... Available with other rubber compounds for special purposes (see www.wpg.com).
)
Eight 9" [23 cm] nominal
diameter (Model VPFS9)
Twelve 11" [28 cm] nominal
diameter, lipped (Model G3370)
Twenty 11" [28 cm] nominal
diameter, lipped (Model G3370)
Pad Spread2
2...... These dimensions reflect pad configurations with the Maximum Load Capacity; other configurations are possible for lighter loads.
--------------------------------to outer edges---------------------------------
Length ‒Maximum 62" [157 cm] 140¼" [356 cm] 140½" [357 cm]
Length ‒Minimum 62" [157 cm] 64½" [164 cm] 88" [223 cm]
Width ‒Maximum 27½" [70cm] 56" [142 cm] 56" [142 cm]
Width ‒Minimum 27½" [70cm] 46¼" [117 cm] 56" [142 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” on page 28).
Per pad: 125 lbs [57 kg]
Total: 1,000 lbs [455 kg]
Per pad: 167 lbs [75.5 kg]
Total: 2,000 lbs [905 kg]
Per pad: 150 lbs [68 kg]
Total: 3,000 lbs [1,360 kg]
Lifter
Weight 565 lbs [257 kg] 700 lbs [318 kg] 740 lbs [336 kg]
Power
Source See serial label for specific AC voltage, frequency and amperage.
Rotation
Capability Manual, 360°, with latching at every 18° of revolution (when required)
Tilt
Capability4
4...... Specifications shown for 120V AC lifters;characteristics may vary for other voltages.
Powered, 90°, with adjustable electronic speed controller; Maximum speed = approx 20 seconds per tilt
travel in one direction; Maximum duty = 50 tilts per hour
Product
Options See separate instructions about 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 intended5
5...... Vacuum pads, filter elements and other wear-out items are excluded.
ASME Standard
BTH-1 Design Category "B", Service Class "0" (see www.wpg.com for more information)
Rev 1.0/2-21 MRPTHD-AC: #350663
!!–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

MRPTHD-AC: #35066 Rev 1.0/2-214
Note: Standard MRPTHD89AC (top) and MRPTHD1211LAC (bottom) are shown.
SPECIFICATIONS

Rev 1.0/2-21 MRPTHD-AC: #350665
Note: Standard MRPTHD2011LAC is shown.
SPECIFICATIONS

MRPTHD-AC: #35066 Rev 1.0/2-21 6
SAFETY
Wear personal protective
equipment that is appropriate for
the load material. Follow trade
association guidelines.
Do not remove or obscure safety
labels.
Do not make any modifications to
the lifter (see “LIMITED
WARRANTY”).
Use the lifter only in an approved
“OPERATING ENVIRONMENT”(see
“INTENDED USE”).
Do not use a lifter that is damaged,
malfunctioning, or missing parts.
Do not use a lifter if the sealing
edge of any vacuum pad is cut or
otherwise damaged.
Do not use a lifter to lift cracked or
broken glass.
Do not exceed the Maximum
Load Capacity or lift loads the
lifter is not designed for (see
“INTENDED USE”).
Do not use a lifter 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 padsare 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 personnel away
from the lifter, to avoid injury in
case of an unintended load release.
Do not touch the vacuum release
controls during a lift.
Do not allow people to ride on the
lifter or the load.
Do not lift a load higher than
necessary or leave suspended loads
unattended.
Do not position a loaded or
unloaded lifter over people.
Before servicing a powered lifter,
place the power control in the
inactive position and, when
possible, disconnect the power source.

Rev 1.0/2-21 MRPTHD-AC: #350667
Features shown here are underlined on their first appearance in each section following.1
1 VACUUM RESERVE TANK 2 VACUUM PUMP 3 Enclosure w/VACUUM SWITCH
4 VACUUM GAUGE 5 VACUUM LIFT LIGHT 6 PADFRAME
7 TELESCOPING PAD ARM 8 QUICK CONNECTOR 9 VACUUM PAD w/ MOVABLE
PAD MOUNT
10 POWER SWITCH 11 HOIST PENDANT HOLDER 12 AIR FILTER
13 VACUUM RELEASE BUTTON 14 TILT & ROTATION RELEASE TOGGLE SWITCH 15 MOVABLE CONTROL PENDANT
16 TILT SPEED CONTROLLER 17 LIFT BAR 18 CONTROL HANDLE
19 TILT ACTUATOR 20 TRANSFORMER (optional) 21 LIFT POINT
22 PARKING STAND (optional)
Note: A standard MRPTHD1211LAC is shown. Although some of the following photos do not
show this specific lifter, they all illustrate how this kind of lifter functions.
For information about specific parts, see “REPLACEMENT PARTS” on page 31 and/or any
separate instructions for Product Options.
1..... Some features may be optional, depending on the lifter in question.
OPERATING FEATURES

MRPTHD-AC: #35066 Rev 1.0/2-218
ASSEMBLY
1) Remove all shipping materials and save them with the shipping container for future use.
2)
Make sure power source has
ground fault circuit interrupter.
Connect the power cable:
2.1)
Wiring must be done by
qualified personnel, taking all
appropriate safety precautions.
Wire the female connector provided to
an appropriate power source, as
indicated on the label attached.
Without adequate power, lifter
could release load, resulting in
load damage and personal injury.
Note: Brown-outs, over-taxed generators,
extension cords and other conditions can
reduce power at the lifter.
2.2) Route the power cable so that it does not become tangled during operation.
2.3) Plug in the power cable:
2A 2B
Insert
the power cable’s male
connector into the female
connector and twist to secure
them together (fig. 2A-B).
3)
3A
As needed, adjust the lift point position (fig. 3A):1
3.1) Remove the cotter pins that secure the mounting
pins. Then remove the mounting pins.
3.2) Move the lift point to the position thatprovides
the best hang angle for the load.
3.3) Reinstall the mounting pins, and secure them with
the cotter pins.
Make sure all hardware for adjustable
lift point is installed securely before
using lifter.
Failure to install adjustable lift point hardware
securely can result in load damage or personal injury.
1..... Moving the lift point forward (away from operator) helps keep the hang angle vertical while the lifter is loaded; moving the lift spool rearward
(towards operator) helps keep the hang angle vertical while the lifter is unloaded.