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.

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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

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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).

Rev 0.0/8-18 9 MRTALP6-DC +2: #35262
TO CHANGE THE PAD FRAME CONFIGURATION
The lifter offers a variety of pad frame configurations to accommodate different load dimensions
and weights. The following illustrations show all permissible configurations. Select a configuration
to provide optimal support across the load surface and to minimize load overhang (see
OPERATION: BEFORE USING THE LIFTER).
WARNING: Use only permissible pad frame configurations.
Configurations are created by installing or removing the pad frame’s extension arms, by
repositioning or removing the movable pad mounts, and by connecting or disconnecting the
vacuum hoses to certain vacuum pads.
Note: To ensure maximum effectiveness of the dual vacuum system, the vacuum pads must be
connected to the 2 circuits (marked “1” and “2”) as shown in the following illustrations.
Use the Maximum Load Capacities and Pad Spread in the illustrations to confirm that the
configuration selected is suitable for each load's weight and dimensions:
Note: Whenever a vacuum hose is disconnected from the vacuum system, the corresponding
vacuum pad does not contribute to the load capacity, whether or not the pad is mounted on the
pad frame.

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To support the maximum load weight, all vacuum pads must be installed on the pad frame and
the corresponding vacuum hoses must be connected to the vacuum system. To support the
largest load dimensions, all extension arms must also be installed on the pad frame. To support
smaller weights and dimensions, some extension arms or vacuum pads may be removed, and the
corresponding vacuum hoses may be disconnected, provided that the lifter still has
sufficient capacity to support the load in question .
WARNING: Removing or disconnecting any vacuum pad reduces load capacity.

Rev 0.0/8-18 11 MRTALP6-DC +2: #35262
To Connect/Disconnect Vacuum Hoses
The vacuum hose for each vacuum pad is connected to or
disconnected from the vacuum system by means of a quick
connector. To connect the vacuum hose, push the male and
female ends of the connector together until they lock. To
disconnect the vacuum hose, move the release ring on the
female end until the connector separates.
WARNING: Make sure vacuum hoses are coiled or
routed to avoid damage during rotation or tilt.
Make sure all vacuum hoses are secure and routed to avoid being punctured, pinched, kinked,
entangled, abraded or otherwise damaged while the lifter is in operation.
To Install/Remove Extension Arms
1) Remove the cotterless hitch pin from one extension arm.
2) Insert the end of the extension arm in its socket on the pad frame, so that the holes align for
the cotterless hitch pin.
3) Secure the extension arm in the pad frame by pushing the cotterless hitch pin through the
holes until the retaining ball emerges on the far side of the pad frame socket.
4) Repeat steps 1-3 to install other extension arms as needed for the pad frame configuration desired.
5) To remove extension arms, reverse this procedure. Store removed extension arms in a clean,
dry location to protect them from environmental exposure.
To Reposition (or Remove) Movable Pad Mounts
1) Depending on the desired location of a movable pad mount, it may be necessary to
disconnect the corresponding vacuum hose (see To Connect/Disconnect Vacuum Hoses
preceding). Disconnect the vacuum hose as needed to move a pad mount.
2) Remove the cotterless hitch pin from the pad mount.
3) Move the pad mount to the desired position on the pad frame and align the holes for the
cotterless hitch pin in the pad mount with the corresponding holes in the pad frame.
4) Secure the pad mount by pushing the cotterless hitch pin through the holes until the retaining
ball emerges on the far side of the pad mount.
Note: When you are securing a pad mount on the main pad frame, the cotterless hitch pin
may encounter resistance from internally routed hoses or wires. If so, gently manipulate the
pin around any hoses or wires within the tube, in order to avoid damaging them.
5) If the vacuum hose was disconnected in step 1, reconnect the vacuum pad to an appropriate
connector on the pad frame (see To Connect/Disconnect Vacuum Hoses preceding). Make
sure that the vacuum hose is secure and routed to avoid interference with lifter operations.
6) Repeat steps 1-5 to position other pad mounts as needed. To ensure maximum effectiveness
of the dual vacuum system, always position vacuum pads as shown in the preceding
illustrations, and make sure that all vacuum hoses are functioning correctly.
To remove a vacuum pad from the pad frame all together, disconnect the corresponding vacuum
hose and remove the pad mount as directed above. Store the pad and its mount in a clean, dry
location to protect them from environmental exposure. Use the pad cover supplied.
QUICK CONNECTOR
1 FEMALE END
2 MALE END

Rev 0.0/8-18 12 MRTALP6-DC +2: #35262
INTENDED USE
LOAD CHARACTERISTICS
WARNING: This lifter is NOT intended for lifting hazardous materials, such as
explosives or radioactive substances.
The operator must verify that the lifter is intended to handle each load, in accordance with the
following requirements:
• The load must not exceed the maximum allowable weight specified under Load Capacity (see
SPECIFICATIONS).
• The load must be a single piece of nonporous or semiporous material with a flat and relatively
smooth contact surface.
5
To determine whether the load is too porous or rough, perform the
test under Vacuum Level on Other Surfaces (see OPERATION: TO APPLY THE PADS TO A LOAD).
• The load's contact surface must be suitable for obtaining a friction coefficient of 1 with the
lifter's vacuum pads (see MAINTENANCE: VACUUM PAD MAINTENANCE: Friction Coefficient), as
verified by a friction test, or capacity should be derated appropriately. If necessary, contact
Wood's Powr-Grip for help.
• In order to avoid damaging the vacuum pads, the load's surface temperature must not exceed
the allowable Operating Temperatures (see SPECIFICATIONS). However, if such an
application cannot be avoided, Wood's Powr-Grip does offer a heat-resistant rubber
compound and other solutions which may enable you to lift loads with higher surface
temperatures. Contact Wood’s Powr-Grip or an authorized dealer for more information.
•While the minimum length and width of the load are determined by the Pad Spread (see
SPECIFICATIONS), the maximum length and width are determined by the allowable
overhang, or the amount of load material that can extend sideways beyond the vacuum pads
without breaking or otherwise being damaged.
The allowable overhang depends on the kind of load material being lifted, the thickness of the
material, and the angle at which it is handled (if any). Since materials such as glass, stone
or sheet metal each have different physical properties, the allowable overhang must be
evaluated separately for each type of load. If necessary, contact Wood’s Powr-Grip or an
authorized dealer for help in determining the recommended overhang in a specific situation.
• In order to maintain load stability in the upright position, the maximum allowable thickness of
loads is 1½" [3.8 cm] at the maximum weight (see SPECIFICATIONS: Load Capacity).
6
This
allowance assumes that the load is centered correctly on the lifter's pad frame (see
OPERATION: TO APPLY THE PADS TO A LOAD: Positioning the Lifter on the Load) and that no
other forces, such as wind pressure, are at work on the load. Either of these circumstances
could reduce the allowable load thickness.
5
Lifters that feature concave vacuum pads can also attach to some curved loads. Since curvature affects the lifting capacity,
contact Wood’s Powr-Grip for help in determining the Load Capacity for a particular curved load.
6
This allowance does not account for the use of Pad Spacers. Pad Spacers can reduce load stability in the upright
position and, in some cases, the allowable thickness of loads.

Rev 0.0/8-18 13 MRTALP6-DC +2: #35262
Conversely, allowable thickness increases as load weight decreases. In addition, an operator
may be able to manually counteract the tendency of unstable loads to tilt out of the upright
position, provided that the operator maintains control of the load at all times (see
OPERATION: TO LIFT AND MOVE THE LOAD:About the Tilt Linkage and TO TILT THE LOAD). If
necessary, contact Wood’s Powr-Grip for help in determining the maximum thickness
permitted when handling any specific load.
Note: Vacuum pads can stain or deform load surfaces with light colors or soft coatings. The
operator should test such surfaces before using the lifter on them.
OPERATING ENVIRONMENT
The operator must determine whether the lifter is intended to be used in each work environment,
in accordance with the following restrictions:
WARNING: Never use lifter in dangerous environments.
• This lifter is not intended for use in any environment that is inherently dangerous to the
operator or likely to compromise the lifter's ability to function. Environments containing
explosives, caustic chemicals and other dangerous substances must be avoided when using
the lifter.
• The lifter's work environment is limited by the Operating Elevation and Operating Temperatures
indicated in SPECIFICATIONS.
• The lifter's work environment must be free of metal particles or any other contaminates that
could damage lifter components through airborne contact or any other means of transmission
in the environment. If such contaminates cause a vacuum pump failure, they could result in
a load release and possible injury to the operator or others nearby.
WARNING: Environmental contaminates could result in vacuum pump failure.
• Using the lifter in wet environments may require the operator to take special precautions.
Moisture on contact surfaces of the load or vacuum pads diminishes the lifter’s slip resistance,
thereby reducing the lifting capacity (see MAINTENANCE: VACUUM PAD MAINTENANCE: Friction
Coefficient).
WARNING: Moisture reduces slip resistance of vacuum pads.
Although the lifter's exterior surfaces can tolerate some exposure to water vapor, they are not
designed to be water-tight. Submerging the lifter or using it in rain may damage lifter
components; these and similar conditions must be avoided.
• If the lifter is equipped with a Remote Control System, the work environment must be suitable
for using it, as verified by the REMOTE CONTROL SYSTEM TEST (see MAINTENANCE).
DISPOSAL OF THE LIFTER
After the vacuum lifter has reached the end of its service life, you must dispose of the lifter in
compliance with all local codes and regulatory standards that are relevant for the geographical
region.
Note: This lifter is equipped with a battery, which may be subject to special disposal regulations.

Rev 0.0/8-18 14 MRTALP6-DC +2: #35262
OPERATION
BEFORE USING THE LIFTER
The operator must determine whether the lifter is capable of performing each intended task, in
accordance with the SPECIFICATIONS and INTENDED USE sections of this INSTRUCTIONS
manual. In addition, all of the following preparations must be completed prior to lifting any load.
Taking Safety Precautions
The operator must be trained in all relevant industry and regulatory standards for the operation
of the vacuum lifter in its geographical location (eg, ASME B30.20 in the USA).
The operator must read and understand this INSTRUCTIONS manual, including all WARNINGS ,
before using the lifter. If necessary, contact Wood’s Powr-Grip or an authorized dealer for
assistance.
WARNING: Always wear appropriate personal protective equipment.
The operator must wear any personal protective equipment and take any other precautions
required to handle the load safely. Consult appropriate trade association guidelines to determine
what precautions are necessary for each type of load material.
Performing Inspections and Tests
WARNING: Always check battery energy before using lifter.
(See MAINTENANCE: BATTERY TEST)
Perform all inspections and tests required by the INSPECTION and TESTING
SCHEDULES (see MAINTENANCE). In addition, if the lifter has been in storage,
always conduct a VACUUM TEST before placing it in service (see MAINTENANCE).
WARNING: Make sure alarm is clearly audible over ambient noise at operator
position.
The volume of the alarm may be adjusted by rotating the shutter of the low vacuum warning
buzzer. Make sure the alarm is loud enough to be heard over any other noise that may be
present while the lifter is in use. In addition, the alarm must be clearly audible at the maximum
distance the operator may be from the lifter, as well as through any barriers or obstructions
between the operator and the lifter. In order to be considered clearly audible.
7
7
Maximum alarm volume is 103 dBA at 2 ft [60 cm]. Consult EN 7731 to make sure the warning buzzer complies with CE
Standards.

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CAUTION: Examine each air filter regularly, and empty when necessary.
Two air filters help protect the vacuum generating system from contaminants. However, the lifter
is not intended for use on wet load surfaces because the filters would not prevent liquid from
entering the vacuum system. The operator must examine each filter regularly and remove any
liquid or other contaminants found inside (see MAINTENANCE: AIR FILTER MAINTENANCE). To access
the air filters, remove the cover indicated in OPERATING FEATURES.
Confirming the Pad Frame Configuration
WARNING: Load capacity of lifter can vary, depending on pad frame
configuration.
Make sure the pad frame has been assembled in the configuration that will provide optimal
support of the load while lifting (see ASSEMBLY: TO CHANGE THE PAD FRAME CONFIGURATION). The
pad frame configuration selected must be appropriate, both for the weight and for the
dimensions of the load in question.
Preparing to Use the Optional Remote Control System
If the lifter is equipped with a Remote Control System, the operator can engage the lifter's apply
and release functions at distances up to 250 ft [76 m], provided there is a direct and clear view
of the lifter and its status indicators from the operator location (see MAINTENANCE: REMOTE
CONTROL SYSTEM TEST). When lifting a load from a remote location, the operator must monitor the
lifter at all times to make sure that it is functioning as intended.
8
In addition, the operator must
exercise special care to ensure that the load is landed and supported correctly before releasing
the load (see TO RELEASE THE PADS FROM THE LOAD to follow).
The radio transmitter is also equipped with an emergency transmitter disconnect that prevents
the transmitter from sending any transmission. This button should not need to be used, but may
have to be reset if accidentally engaged. To reset, twist the button clockwise while allowing it to
spring outward to its normal position.
8
The Remote Control System is designed with safeguards to prevent multiple lifters from responding until a clear transmission
is received. Nevertheless, radio controlled lifters should be tested to ensure that each transmitter controls only one lifter. The
buttons located on the lifter function regardless of any radio transmissions in the vicinity.

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TO APPLY THE PADS TO A LOAD
Positioning the Lifter on the Load
Make certain that the contact surfaces of the load and all vacuum pads are free of any
contaminates that could prevent the pads from sealing against the load (see MAINTENANCE:
VACUUM PAD MAINTENANCE).
Center the lifter’s pad frame to within 2" [5 cm] of the load center, since off-center loading can
cause the load to rotate or tilt unexpectedly (see TO ROTATE THE LOAD EDGEWISE or TO TILT THE LOAD
to follow), and it may also damage the lifter.
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Make sure that all vacuum pads will fit entirely on
the load’s contact surface (see SPECIFICATIONS: Pad Spread) and that they will be loaded
evenly while lifting (see SPECIFICATIONS: Per-Pad Load Capacity). Then apply the lifter to the
load so that all pads are touching the contact surface.
Powering up the Lifter
Place the lifter's power switch in the “ON” ( ) position.
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The adjacent, blue power light
remains illuminated while the lifter is powered up. Keep the power switch in the “on” position
while lifting a load. Any power interruption during a lift could result in the release of a load and
possible injury to the operator or others (see TO LIFT AND MOVE THE LOAD: In Case of Power Failure
to follow).
WARNING: Never turn power off while lifting.
If the lifter is equipped with a Remote Control System, press the transmitter power button ( Ф)
and hold it briefly to activate the radio transmitter.
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This button is also used to activate the
enable function (see TO RELEASE THE PADS FROM THE LOAD to follow).
Note: If the transmitter is activated, the transmission indicator light flashes green when any
button on the transmitter is pressed and held; if the transmitter is not activated, the indicator
light flashes red (see BEFORE USING THE LIFTER: Preparing to Use the Optional Remote Control
System preceding).
Sealing the Pads against the Load
Firm pressure at the center of the lifter helps the vacuum pads begin to seal against the load.
Press the apply button ( ) on the lifter or the optional radio transmitter to make sure the apply
function is activated. This energizes the vacuum pump, causing air to be drawn at the pads
immediately. The low vacuum warning buzzer also sounds an alarm until the lifter attains
sufficient vacuum to lift the maximum load weight (see TO LIFT AND MOVE THE LOAD: Interpreting
the Warning Buzzer and Lift Light to follow). The lifter must remain in the apply mode throughout
the entire lift.
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The lifter is designed to handle the maximum load weight (see SPECIFICATIONS: Maximum Load Capacity) when the load’s
center of gravity is positioned within 2" [5 cm] of the pad frame's center point. Occasional loading deviations are permissible,
provided that the operator can maintain control of the load at all times and that the load weight is low enough to avoid damaging
the lifter. See OPERATION: TO TILT THE LOAD for more information.
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When the operator powers up the lifter, either the stand-by function or the apply function is automatically activated,
depending on which was used last.
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The radio transmitter turns off automatically, after a period of inactivity. The operator can also operate the lifter without
using the radio transmitter, if desired.

Rev 0.0/8-18 17 MRTALP6-DC +2: #35262
WARNING: Keep apply function activated throughout lift.
Note: If a vacuum pad has been lying against a hard object (as during shipping), it may be
slightly distorted. Although initially it may be difficult to apply the pad to a load, this condition
should correct itself with continued use.
Reading the Vacuum Gauges
The lifter is equipped with 2 vacuum gauges, which indicate the current vacuum level in each
circuit of the lifter’s vacuum system. The green range indicates vacuum levels sufficient for lifting
the maximum load weight, whereas the red range indicates vacuum levels that are not sufficient
for lifting the maximum load weight. Both gauge needles should show a sudden surge in vacuum
as the vacuum pads seal against the load. If it takes more than 5 seconds for the vacuum level to
reach 5" Hg [-17 kPa] on either vacuum gauge, press on any pad that has not yet sealed.
Vacuum Level on Optimal Surfaces
When the lifter is attached to clean, smooth, nonporous load surfaces, it should be able to
maintain a vacuum level in the green range on both vacuum gauges, except when used at high
elevations (see SPECIFICATIONS: Operating Elevation). If not, make sure the vacuum switches
are adjusted correctly (see MAINTENANCE: VACUUM SWITCH ADJUSTMENT). If either vacuum switch
cannot be adjusted to maintain a vacuum of 16" Hg [-54 kPa], perform the VACUUM TEST (see
MAINTENANCE) to determine whether there is a deficiency in the vacuum generating system.
Vacuum Level on Other Surfaces
When the lifter is attached to contaminated, rough or porous load surfaces, it may not be able to
maintain a vacuum level in the green range on both vacuum gauges, due to leakage in the seal
between the vacuum pads and the load surface.
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In the case of contamination, thoroughly clean
the contact surfaces of the load and the vacuum pads (see MAINTENANCE: VACUUM PAD
MAINTENANCE: Cleaning), and reapply the lifter to the load. If the load has rough or porous
surfaces, the operator must conduct a test to determine whether the lifter is designed
to lift the load , as follows:
1) Make sure the lifter's vacuum generating system is functioning correctly (see MAINTENANCE:
VACUUM TEST).
2) Apply the vacuum pads to the load as previously directed.
3) After the vacuum pump stops running, place the lifter's power switch in the “off” ()
position.
4) Raise the load a minimal distance, to assure that it is supported by the lifter.
5) Monitor both vacuum gauges while the load is suspended for 5 minutes: The lifter must
maintain a minimum vacuum level of 10" Hg [-34 kPa] during this time. If not, the
load does not possess the characteristics required for using this lifter.
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Contaminated loads can also cause the vacuum pump to run frequently or continuously. Since excessive pumping quickly
reduces battery energy, the operator should clean the load when possible, to minimize pumping.
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Certain load materials are too rough or porous to allow the lifter to form a seal which can be maintained for 5 minutes
without power. However, in geographical locations where CE Standards do not apply, it may be possible to use the lifter to lift
such loads. Contact Wood’s Powr-Grip for more information.

Rev 0.0/8-18 18 MRTALP6-DC +2: #35262
TO LIFT AND MOVE THE LOAD
Positioning the Lift Bar
WARNING: Lift bar must be oriented vertically to lift
load.
Never lift the load from a flat position with the lift bar latched parallel
to the load. Always disengage the tilt latch (see TO TILT THE LOAD to
follow) and raise the lift bar to a vertical orientation before attempting to lift.
Interpreting the Warning Buzzer and Lift Light
A lifter's Maximum Load Capacity is rated at a vacuum level of 16" Hg [-54 kPa] (see
SPECIFICATIONS). After the lifter has attained this level, the low vacuum warning buzzer turns
off and the green vacuum lift light turns on automatically, to signal that the lifter is ready to lift
the maximum load weight. As vacuum continues to increase, the vacuum pump also turns off, to
conserve battery energy.
WARNING: Never attempt to lift load unless green lift light is illuminated.
Do not attempt to lift the load unless the lift light is illuminated; such an attempt could result in a
load release and possible injury to the operator.
Monitoring Vacuum Indicators
The vacuum lift light and both vacuum gauges must remain completely visible to the operator, so
that they can be monitored throughout the entire lift.
WARNING: Vacuum indicators must be visible to operator throughout entire lift.
If the vacuum system experiences leakage while the lifter is attached to the load, the vacuum
pump turns on and off automatically, as required to maintain sufficient vacuum for lifting the
maximum load weight. Under normal conditions, such intermittent cycling of the pump is no
cause for alarm.
However, if vacuum decreases significantly, the lift light turns off and the low vacuum warning
buzzer turns on , to signal the reduction in vacuum to the operator. If this occurs while you are
lifting a load, make sure both vacuum gauges show a vacuum level of 16" Hg [-54 kPa] or
higher. If not, move away and stay clear of the load until it can be lowered to the ground or a
stable support.
WARNING: Stay clear of any suspended load while vacuum level is lower than
16" Hg [-54 kPa].
Discontinue lifter use until the cause of the vacuum loss can be determined. If the pump runs at
intervals of ten minutes or less while the lifter is attached to clean, smooth, nonporous materials,
the leakage is likely to be in the vacuum system. In this event, perform the VACUUM TEST (see
MAINTENANCE) and inspect the vacuum pads for damage (see MAINTENANCE: VACUUM PAD
MAINTENANCE: Inspection). If the vacuum loss cannot be remedied immediately, perform
inspection and maintenance as needed to identify and correct any deficiency before resuming
normal operation of the lifter.