WPG MRPT89AC User manual

Rev 34.2/10-22 MRPT89AC: #350601
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 1000,
AC-VOLTAGE
Model number: MRPT89AC(O)
KEEP FOR FUTURE REFERENCE
INTENDED FOR USE BY SKILLED
PROFESSIONALS • READ AND
UNDERSTAND BEFORE OPERATING

MRPT89AC: #35060 Rev 34.2/11-222

Rev 34.2/11-22 MRPT89AC: #350601
SPECIFICATIONS .....................................................................................3
SAFETY...................................................................................................5
OPERATING FEATURES............................................................................6
ASSEMBLY..............................................................................................7
PAD FRAME OPTIONS .................................................................................10
Connecting/Disconnecting Vacuum Hoses .......................................................................11
Repositioning the Optional Telescoping Pad Arms ...........................................................11
Removing the Optional Telescoping Pad Arms .................................................................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
Performing Inspections and Tests .....................................................................................14
TOUSE THE OPTIONAL PAD SHUTOFFS ..........................................................15
TOATTACH THE PADS TO ALOAD ..................................................................16
Generating Airflow............................................................................................................16
Positioning the Lifter on the Load.....................................................................................16
Reading the Vacuum Gauge..............................................................................................17
TOLIFT AND MOVE THE LOAD......................................................................18
Interpreting the Lift Light..................................................................................................18
Monitoring Vacuum Indicators .........................................................................................18
Controlling the Lifter and Load .........................................................................................19
In Case of a Power Failure.................................................................................................19
TOROTATE THE LOAD .................................................................................20
TOTILT THE LOAD ......................................................................................21
TORELEASE THE PADS FROM THE LOAD .........................................................22
AFTER USING THE LIFTER.............................................................................22
Storing the Lifter ...............................................................................................................23
Transporting the Lifter ......................................................................................................23
TABLE OF CONTENTS

MRPT89AC: #35060 Rev 34.2/11-222
INSPECTIONS AND TESTS......................................................................24
INSPECTION SCHEDULE ................................................................................24
TESTING ...................................................................................................25
Lifter/Load Compatibility Test...........................................................................................25
Operational Tests ..............................................................................................................26
Vacuum Test......................................................................................................................26
Rated Load Test.................................................................................................................27
MAINTENANCE ....................................................................................28
VACUUM PAD MAINTENANCE.......................................................................28
Pad-to-Load Friction Coefficient .......................................................................................28
Pad Inspection ..................................................................................................................28
Pad Cleaning .....................................................................................................................29
REPLACEMENT PARTS...........................................................................30
LIMITED WARRANTY ............................................................................31
TOOBTAIN REPAIRS OR WARRANTY SERVICE...................................................31
TABLE OF CONTENTS

Product
Description
Designed for use with hoisting equipment, the MRPT89AC lifter supports loads using vacuum and
manipulates loads using manual 360° rotation and powered 90° tilt motions.
Model Number MRPT89AC(O)
Vacuum Pads1
1...... Available with other rubber compounds for special purposes (see wpg.com).
(8 each, standard rubber) 9" [23 cm] nominal diameter (Model VPFS9)
Maximum Pad Spread
(to outer edges) 29¼" x 59¼" [75 cm x 151 cm] w/standard pad frame (see “Product Options” below)
Maximum Load
Capacity2
2...... 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 [57 kg]
Total: 1000 lbs [455 kg]
Lifter
Weight 278 lbs [126 kg]3
3...... Does not include options; see serial label for lifter weight including options, when applicable.
Power
Source See serial label for specific AC voltage, frequency and amperage.
Rotation
Capability Manual, 360°, with latching at each ¼ turn (when required)
Tilt
Capability4
4...... Specifications shown for 120V AC lifters; characteristics may vary for other voltages.
Powered, 90°; Time = approx. 9 seconds; Duty cycle = 60 tilts per hour
Product
Options
Available with Individual Pad Shutoffs.
Available with Telescoping/Removable Pad Arms.
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 intended5
5...... Vacuum pads, filter elements and other wear-out items are excluded.
ASME Standard
BTH-1 Design Category "B", Service Class "0"
Troubleshooting
Guide6
6...... 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-016_GENERIC_LEAK_TEST_rev_2014-086
Rev 34.2/11-22 MRPT89AC: #350603
SPECIFICATIONS

MRPT89AC: #35060 Rev 34.2/11-224
Note: A standard MRPT89AC is shown.
SPECIFICATIONS

Rev 34.2/11-22 MRPT89AC: #350605
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.

MRPT89AC: #35060 Rev 34.2/11-226
Features shown here are underlined on their first appearance in each section following.
1 LIFT POINT 2 VACUUM LIFT LIGHT 3 POWERSWITCH
4PENDANTBASKET 5 VACUUM PAD 6 PADFRAME
7 ROTATION RELEASE LEVER 8 VACUUM RELEASE BUTTON 9 TILT TOGGLE SWITCH
10 MOVABLE CONTROL PENDANT 11 AIR FILTER 12 Enclosure w/ VACUUM SWITCH
13 VACUUM GAUGE 14 LIFT BAR 15 VACUUM RESERVE TANK
16 TILT ACTUATOR 17 VACUUM PUMP 18 CONTROL HANDLE
Note: A standard MRPT89AC 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” and/or any separate
instructions for Product Options.
OPERATING FEATURES

Rev 34.2/11-22 MRPT89AC: #350607
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 performed by
qualified service 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 damaged during operation.
2.3)
2B2A
Insert the power cable’s male
connector into the female
connector and twist to secure
them together (figs. 2A-B).
3) Suspend the lifter from appropriate hoisting equipment:
3.1) 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.

3A 3B
MRPT89AC: #35060 Rev 34.2/11-228
3.2) Raise the lift bar by engaging the tilt actuator (see “TOTILT THE LOAD”) and manually
lifting the bar at the same time (figs. 3A-B).
Caution: Manually assist tilt actuator when raising lift bar, to avoid damaging
actuator.
3.3)
3C 3D 3E
Attach the hoisting hook
to the lift point (fig. 3C).
Make sure hook
has restraining
latch (see arrow in
fig. 3D).
Only use rigging rated for Maximum
Load Capacity plus Lifter Weight.
Note: Use rigging (fig. 3E) as
needed to make sure the hook does
not interfere with the load.
3.4) Use the hoisting equipment to remove the lifter from the shipping container. Avoid
damaging the vacuum pads.
Note: The hoist control pendant can be attached to the lifter by inserting it into the
pendant holder provided.
ASSEMBLY