WOOD'S POWR-GRIP MRTALP Series User manual

KEEP FOR FUTURE REFERENCE
INSTRUCTIONS
International Version
MODEL NUMBER: MRTALP611LDC
SERIAL NUMBER: ___________
(please see serial label and record number here)
LOW-PROFILE MANUAL ROTATOR / TILTER
DC-VOLTAGE WITH DUAL VACUUM SYSTEM
AND +2 PAD UPGRADE KIT
READ ALL INSTRUCTIONS AND WARNINGS
BEFORE OPERATING THIS LIFTER
DESIGNED FOR THE MATERIALS HANDLING PROFESSIONAL
P.O. Box 368 –908 West Main
Laurel, MT USA 59044
phone [phone]
phone [phone]
fax [phone]

Rev 0.0/8-18 1 MRTALP6-DC +2: #35262
TABLE OF CONTENTS
SPECIFICATIONS .............................................................................................................3
WARNINGS.......................................................................................................................4
OPERATING FEATURES ....................................................................................................5
ASSEMBLY ........................................................................................................................7
TO SET UP THE LIFTER .................................................................................................................7
TO CHANGE THE PAD FRAME CONFIGURATION .................................................................................9
To Connect/Disconnect Vacuum Hoses.......................................................................................................................................11
To Install/Remove Extension Arms ..............................................................................................................................................11
To Reposition (or Remove) Movable Pad Mounts.......................................................................................................................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
Confirming the Pad Frame Configuration ....................................................................................................................................15
Preparing to Use the Optional Remote Control System ..............................................................................................................15
TO APPLY THE PADS TO A LOAD ....................................................................................................16
Positioning the Lifter on the Load................................................................................................................................................16
Powering up the Lifter .................................................................................................................................................................16
Sealing the Pads against the Load ...............................................................................................................................................16
Reading the Vacuum Gauges .......................................................................................................................................................17
Vacuum Level on Optimal Surfaces .............................................................................................................................................17
Vacuum Level on Other Surfaces .................................................................................................................................................17
TO LIFT AND MOVE THE LOAD ......................................................................................................18
Positioning the Lift Bar.................................................................................................................................................................18
Interpreting the Warning Buzzer and Lift Light ...........................................................................................................................18
Monitoring Vacuum Indicators ....................................................................................................................................................18
Monitoring the Low Vacuum Warning Buzzer.............................................................................................................................19
Controlling the Lifter and Load ....................................................................................................................................................19
In Case of Power Failure ..............................................................................................................................................................19
TO ROTATE THE LOAD EDGEWISE..................................................................................................20
TO TILT THE LOAD......................................................................................................................21
TO RELEASE THE PADS FROM THE LOAD .........................................................................................21
AFTER USING THE LIFTER............................................................................................................22
Storing the Lifter ..........................................................................................................................................................................22

Rev 0.0/8-18 2 MRTALP6-DC +2: #35262
MAINTENANCE............................................................................................................... 23
INSPECTION SCHEDULE .............................................................................................................. 23
Every-Lift Inspection.................................................................................................................................................................... 23
Frequent Inspection .................................................................................................................................................................... 23
Periodic Inspection...................................................................................................................................................................... 23
Infrequent Use ............................................................................................................................................................................ 24
TESTING SCHEDULE ................................................................................................................... 24
Operational Tests ........................................................................................................................................................................ 24
Load Test ..................................................................................................................................................................................... 24
MAINTENANCE SCHEDULE ........................................................................................................... 25
BATTERY TEST .......................................................................................................................... 25
BATTERY RECHARGE .................................................................................................................. 26
Using a Large Charger ................................................................................................................................................................. 26
Using a Small Charger.................................................................................................................................................................. 27
BATTERY CHARGER TEST ............................................................................................................ 27
VACUUM PAD MAINTENANCE ....................................................................................................... 27
Friction Coefficient ...................................................................................................................................................................... 27
Inspection.................................................................................................................................................................................... 28
Cleaning....................................................................................................................................................................................... 28
VACUUM TEST ........................................................................................................................... 29
REMOTE CONTROL SYSTEM TEST.................................................................................................. 29
AIR FILTER MAINTENANCE.......................................................................................................... 30
Filter Function and Conditions Requiring Service ....................................................................................................................... 30
Filter Service Procedures............................................................................................................................................................. 30
VACUUM PUMP MAINTENANCE −DYNAFLO DV1034204 ................................................................ 31
Replacing a Diaphragm................................................................................................................................................................ 31
Replacing a Head Assembly......................................................................................................................................................... 31
VACUUM SWITCH ADJUSTMENT.................................................................................................... 32
Vacuum Switch Function............................................................................................................................................................. 32
Adjustment Procedure ................................................................................................................................................................ 32
REPLACEMENT PARTS LIST ........................................................................................... 34
LIMITED WARRANTY ..................................................................................................... 36

Rev 0.0/8-18 3 MRTALP6-DC +2: #35262
SPECIFICATIONS
Power Source:
12 volts DC, 5 amps
Battery Capacity:
7 amp-hours (18 amp-hours optional)
Tilt Capability:
Manual, 90°, with mechanical advantage that minimizes operator effort and automatic latching in
upright position
Rotation Capability:
Manual, 180°, with automatic latching at every 30° of revolution (when desired)
Vacuum Pump:
Diaphragm type, 2.5 SCFM [71 liters/minute] nominal airflow
Dual Vacuum System:
2 vacuum system circuits allow the lifter to maintain the vacuum level in one circuit even if an
unexpected vacuum loss occurs in the other one (eg, due to load breakage).
Vacuum Reserve Tanks:
2 vacuum reservoirs help prevent immediate vacuum loss in case of power failure and extend
battery life by reducing pump cycles required to maintain vacuum.
Vacuum Gauges:
2 dial gauges indicate current vacuum level in positive inches of Hg and negative kPa.
Vacuum Lift Light:
Green light is energized when vacuum is higher than the level required to lift the maximum load
weight (16" [-54 kPa]).
Low Vacuum Warning Buzzer: Maximum Alarm Volume = 103 dBA at 2 ft [60 cm]. While the lifter is powered up, an audible
alarm warns the operator whenever vacuum is not sufficient for lifting the maximum load weight.
Options:
Available with Remote Control System. This option features a radio transmitter and receiver that
can activate apply and release functions at distances up to 250 ft [76 m]. The system uses a 310-
320 MHz signal.
Operating Elevation:
Maximum = 6000 feet [1828 meters]
Operating Temperatures:
32° to 104° F [0° to 40° C]
Service Life:
This lifter is designed to have a service life of at least 20,000 lifting cycles, when used and
maintained as intended. Vacuum pads, filter elements and other wear-out items are excluded; see
MAINTENANCE and REPLACEMENT PARTS LIST for more information. For the DISPOSAL OF THE LIFTER
after its service life, see INTENDED USE.
ASME Standard BTH-1:
Design Category "B", Service Class "0" (see www.wpg.com for more information)
!!–CE–!! Note: This symbol appears in the INSTRUCTIONS manual only when requirements of a CE Standard are different from
requirements of other standards that also apply to this vacuum lifter. CE requirements are mandatory in geographical areas where
CE Standards apply, but may be optional in other locations.
1
Optionally available with alternative rubber compounds for special applications (see REPLACEMENTS PARTS LIST).
2
The illustrations under ASSEMBLY: TO CHANGE THE PAD FRAME CONFIGURATION shows the Pad Spread and Maximum Load Capacity
for all permissible pad frame configurations.
3
Maximum Load Capacity is based on a friction coefficient of 1; see MAINTENANCE: VACUUM PAD MAINTENANCE: Friction
Coefficient for additional information.
Model Number:
MRTALP611LDC
Description:
Designed for use with a crane or other hoisting equipment, the MRTALP6-DC lifters employ vacuum
to hold a load for lifting, and they provide manual 180° rotation and mechanically assisted, manual
90° tilt movements for load manipulation.
Vacuum Pads:1
11" [28 cm] nominal diameter, lipped (Model G3370), standard rubber, spring-mounted with 1/4" [7
mm] travel and #60 filter screen
Pad Spread:2
(to outer edges)
Length - Maximum:
102" [2593 mm]
- Minimum:
35½" [902 mm]
Width - Maximum:
52¾" [1340 mm]
- Minimum:
12" [305 mm]
Maximum Load Capacity:2
(rated at 16" Hg [-54 kPa] on clean, smooth, nonporous flat surfaces3)
Per-Pad:
175 lbs [79.5 kg]
Total with 8 Pads:
1100 lbs [500 kg]
Lifter Weight:
235 lbs [107 kg] (includes 2 Pad Upgrade Kit)

Rev 0.0/8-18 4 MRTALP6-DC +2: #35262
WARNINGS
Powr-Grip is pleased to offer the most reliable vacuum lifters available.
Despite the high degree of security provided by this product, certain
precautions must be observed to protect the operator and others.
Always wear personal protective equipment that is appropriate for the material being handled.
Follow trade association guidelines.
Always operate the lifter under conditions approved for its design (see INTENDED USE:
OPERATING ENVIRONMENT).
Never operate a lifter that is damaged, malfunctioning, or missing parts.
Never operate a lifter if the sealing edge of any vacuum pad is cut or otherwise damaged.
Never remove or obscure warning labels.
Never operate a lifter if the Load Capacity or any warning appears to be missing or obscured.
Always make certain the contact surfaces of the load and all vacuum pads are clean prior to
applying the pads (see MAINTENANCE: VACUUM PAD MAINTENANCE).
Never exceed the Load Capacity or attempt to lift loads the lifter is not designed for (see
INTENDED USE: LOAD CHARACTERISTICS).
Never attempt to lift cracked or broken glass with this lifter.
Always position the vacuum pads correctly on the load prior to lifting (see OPERATION: TO APPLY
THE PADS TO A LOAD).
Never lift a load when any vacuum indicator shows inadequate vacuum.
Never touch the vacuum release controls during a lift. This may result in loss of vacuum and
release of the load.
Never allow people to ride on the lifter or the load being lifted.
Never lift a load higher than necessary or leave suspended loads unattended.
Never lift a load over people.
Always keep other personnel far enough away from the lifter to avoid injury in the event of an
unexpected load release.
Always place the power control in the inactive position and, when possible, disconnect the
power source before opening any enclosure on the lifter. (Only applicable to powered lifters)
Always remember that modifications to the lifter may compromise its safety. Wood’s Powr-Grip
cannot be responsible for the safety of a lifter that has been modified by the customer. For
consultation, contact Wood's Powr-Grip (see LIMITED WARRANTY).
Never disengage both the rotation latch and the tilt latch at the same time.
If the lifter is equipped with a Remote Control System, never operate the lifter remotely unless
there is clear communication about intended actions (eg, releasing load) with all personnel
near the lift. In addition, the operator must visually verify the status of the lifter and load
prior to remote operations.

Rev 0.0/8-18 5 MRTALP6-DC +2: #35262
OPERATING FEATURES
Note: Components featured in the following instructions for assembling, operating or maintaining
the vacuum lifter are underlined on their first appearance in each section.
1 LIFT SPOOL
10 RADIO TRANSMITTER (optional)
19 BATTERY TEST BUTTON
2 BATTERY CHARGER
11 VACUUM PAD
20 BATTERY GAUGE
3 CONTROL HANDLES
12 MOVABLE PAD MOUNT
21 Cover for VACUUM PUMP
4 BATTERY
13 STROBE LIGHT (optional)
22 VACUUM LIFT LIGHT
5 ROTATION RELEASE LEVER
14 RADIO RECEIVER (optional)
23 VACUUM GAUGES
6 PAD FRAME
15 POWER SWITCH
24 LOW VACUUM WARNING BUZZER
7 EXTENSION ARM
16 RELEASE BUTTON
25 TILT RELEASE LEVER
8 QUICK CONNECTOR
17 APPLY BUTTON
26 VACUUM RESERVE TANK
9 Cover for AIR FILTERS
18 ENABLE BUTTON
27 LIFT BAR
and VACUUM SWITCHES
28 INSTRUCTION CANISTER

Rev 0.0/8-18 6 MRTALP6-DC +2: #35262
1 EMERGENCY TRANSMITTER DISCONNECT
2 TRANSMISSION INDICATOR LIGHT
3 RELEASE BUTTON
4 TRANSMITTER POWER/ENABLE BUTTON
5 APPLY BUTTON
OPTIONAL RADIO TRANSMITTER

Rev 0.0/8-18 7 MRTALP6-DC +2: #35262
ASSEMBLY
TO SET UP THE LIFTER
1) Open the shipping container and remove all materials for restraining or protecting the vacuum
lifter. Save the container for use whenever the lifter is transported.
2) If necessary, assemble the lifter's lift bar as follows: One segment
of the lift bar can be removed, to reduce overall lifter dimensions
for shipping. If so, orient the removable segment (1) as shown in
the illustration, and slide it over the other segment until the bolt
holes align. Reinstall the bolts and all associated hardware (2);
then tighten both bolts securely.
3) Position the lifter's lift spool as follows: The adjustable lift spool
assembly provides 3 different lift points (see illustration), in order
to optimize the lifter's hang angle and/or its overall height for the
intended use.
4
To change the lift spool position, remove the
retaining bolt (3) and, if necessary, loosen the pivot bolt (4). Next
pivot the lift spool assembly until the bolt holes align for the
desired spool position. Then reinstall the retaining bolt and all
associated hardware. Tighten both bolts securely.
Note: For pad frame configurations that use extension arms (see
TO CHANGE THE PAD FRAME CONFIGURATION to follow), position the lift
spool to avoid contact with the extension arms when the pad frame
is rotating.
4) Suspend the lifter from a crane as follows: Select hoisting equipment (crane and hoist, when
applicable) rated to carry the maximum load weight plus the lifter weight (see
SPECIFICATIONS: Maximum Load Capacity and Lifter Weight).
Note: Any application of the lifter must conform to all statutory or regulatory standards that
relate to the hoisting equipment when used in its geographical location (eg, relevant OSHA
standards in the USA).
Disengage the tilt latch (see OPERATION: TO TILT THE LOAD) and raise the lift bar to a vertical
orientation. Then attach the hoisting equipment hook to the lift spool.
WARNING: Hoisting equipment hook must be fitted with restraining latch to
prevent lift spool from slipping off under any circumstances.
4
When the extension arms are installed on the pad frame (see illustration in OPERATING FEATURES), placing the lift spool in
the lowest position would create interference when the pad frame is rotated. To avoid this problem, place the lift spool in one of
the other two positions or remove the extension arms (see TO CHANGE THE PAD FRAME CONFIGURATION to follow).

Rev 0.0/8-18 8 MRTALP6-DC +2: #35262
Note: Some hoisting equipment hooks could interfere with an upright load that extends
beyond the lifter's pad frame. If the load would contact the hook during lifter operation, the
operator must prevent this by attaching a sling (or other rigging that does not interfere with
the load) between the hook and the lift spool.
WARNING: Any sling used must be rated to carry maximum load weight plus
lifter weight.
Use the hoisting equipment to raise the lifter out of the shipping container. Be careful to avoid
damaging any vacuum pads.
5) Arrange the pad frame in the configuration that will provide optimal support of the load while
lifting (see TO CHANGE THE PAD FRAME CONFIGURATION to follow). Remove the pad covers and
save them for use whenever the lifter is stored.
6) Connect the electrical connectors uniting the battery to the battery charger and the vacuum
generating system. Now the lifter is operational.
7) Perform Operational and Load Tests for the lifter as directed in MAINTENANCE: TESTING
SCHEDULE. If the lifter is equipped with a Remote Control System, also perform the REMOTE
CONTROL SYSTEM TEST (see MAINTENANCE).