WOOD'S POWR-GRIP MRTALPCH611LDC User manual

KEEP FOR FUTURE REFERENCE
INSTRUCTIONS
International Version
MODEL NUMBERS: MRTALPCH611LDC,
MRTALPCH6HV11DC, MRTALPCH610DCO
SERIAL NUMBER: ___________
(please see serial label and record number here)
MANUAL ROTATOR / TILTER
LOW-PROFILE, DC-VOLTAGE
WITH DUAL VACUUM SYSTEM
AND CHANNEL-STYLE PAD FRAME
READ ALL INSTRUCTIONS AND WARNINGS
BEFORE OPERATING THIS LIFTER
DESIGNED FOR MATERIALS-HANDLING PROFESSIONALS
P.O. Box 368 –908 West Main
Laurel, MT USA 59044
phone [phone]
phone [phone]
fax [phone]

Rev 13.0/5-19 1 MRTALPCH6-DC: #35054
TABLE OF CONTENTS
SPECIFICATIONS............................................................................................................ 3
WARNINGS ..................................................................................................................... 4
OPERATING FEATURES................................................................................................... 5
ASSEMBLY....................................................................................................................... 6
TO SET UP THE LIFTER ................................................................................................................6
TO CHANGE THE PAD FRAME CONFIGURATION ................................................................................8
To Install/Remove Pad Frame Extensions ......................................................................................................9
To Connect/Disconnect Vacuum Hoses..........................................................................................................9
To Route Vacuum Hoses ............................................................................................................................10
INTENDED USE ............................................................................................................. 11
LOAD CHARACTERISTICS ........................................................................................................... 11
OPERATING ENVIRONMENT .......................................................................................................12
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 ATTACH THE PADS TO A LOAD................................................................................................16
Positioning the Lifter on the Load ...............................................................................................................16
Powering up the Lifter................................................................................................................................16
Reading the Vacuum Gauges ......................................................................................................................17
Vacuum Level on Optimal Surfaces .............................................................................................................17
TO LIFT AND MOVE THE LOAD ....................................................................................................19
Positioning the Lift Bar ...............................................................................................................................19
Interpreting the Warning Buzzer and Lift Light ............................................................................................19
Monitoring Vacuum Indicators ....................................................................................................................19
Monitoring the Low Vacuum Warning Buzzer ...............................................................................................20
Controlling the Lifter and Load....................................................................................................................20
In Case of Power Failure ............................................................................................................................20
TO ROTATE THE LOAD EDGEWISE................................................................................................21
TO TILT THE LOAD ...................................................................................................................22
TO RELEASE THE PADS FROM THE LOAD .......................................................................................22
AFTER USING THE LIFTER..........................................................................................................23
Storing the Lifter........................................................................................................................................23
MAINTENANCE.............................................................................................................. 24
INSPECTION SCHEDULE.............................................................................................................24
Every-Lift Inspection ..................................................................................................................................24
Frequent Inspection ...................................................................................................................................24

Rev 13.0/5-19 2 MRTALPCH6-DC: #35054
Periodic Inspection.....................................................................................................................................24
Infrequent Use...........................................................................................................................................25
TESTING SCHEDULE..................................................................................................................25
Operational Tests.......................................................................................................................................25
Load Test ..................................................................................................................................................25
MAINTENANCE SCHEDULE..........................................................................................................26
BATTERY TEST .........................................................................................................................26
BATTERY RECHARGE .................................................................................................................26
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 DV1032102 ...............................................................31
Replacing the Diaphragm ...........................................................................................................................31
Replacing the Head Assembly .....................................................................................................................31
VACUUM PUMP MAINTENANCE −THOMAS 107CDC20 ..................................................................32
Replacing the Diaphragm ...........................................................................................................................32
Replacing the Intake Valve Flapper .............................................................................................................32
Replacing the Exhaust Valve Flapper and Head Gasket .................................................................................32
VACUUM SWITCH ADJUSTMENT ..................................................................................................33
Vacuum Switch Function ............................................................................................................................33
Adjustment Procedure ................................................................................................................................33
REPLACEMENT PARTS LIST .......................................................................................... 34
LIMITED WARRANTY.................................................................................................... 36

Rev 13.0/5-19 3 MRTALPCH6-DC: #35054
SPECIFICATIONS
Description:
Designed for use with a crane or other hoisting equipment, MRTALPCH6-DC lifters employ vacuum to hold
a load for lifting, and they provide manual 180° rotation and manual 90° tilt movements for load
manipulation.
Model Number:
MRTALPCH611LDC
MRTALPCH6HV11DCO
MRTALPCH610DCO
Vacuum Pads:1
(Six of standard rubber, spring-mounted with 1/8" [3 mm] travel and #60 filter screen)
11" [28 cm] nom. diameter,
lipped (Model G3370)
10" [25 cm] nom. diameter,
lipped (Model HV11)
10" [25 cm] nom. diameter,
concave (Model G0750)
Pad Spread:
(to outer edges)
Minimum:
53¾" x 12" [1,365 x 305 mm]
52¾" x 11" [1,340 x 279 mm]
51¾" x 10" [1,314 x 254 mm]
Maximum:
79¼" x 12" [2,010 x 305 mm]
78¼" x 11" [1,988 x 279 mm]
77¼" x 10" [1,962 x 254 mm]
Maximum Load Capacity:2
Per-Pad:
184 lbs [83.5 kg]
150 lbs [68.5 kg]
150 lbs [68.5 kg]
With 4 pads:
700 lbs [320 kg]
600 lbs [270 kg]
600 lbs [270 kg]
With 6 pads:
1,100 lbs [500 kg]
900 lbs [410 kg]
900 lbs [410 kg]
Lifter Weight:
130 lbs [59 kg]
Power Source:
12 volts DC, 10 amps (with Thomas pump) or 3 amps (with Dynaflo pump)
Battery Capacity:
7 amp-hours
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 each ¼ revolution
Vacuum Pump:
Diaphragm type, 1 SCFM [28 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 Gauges:
2 dial gauges indicate current vacuum level in positive inches of Hg and negative kPa.
Vacuum Lift Light:
Green light turns on whenever vacuum is higher than the level required to lift the maximum load weight
(18 Hg [-60 kPa]).
Low Vacuum Warning Buzzer: Maximum Volume = 103 dBA at 2' [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 that can activate “attach”
and “release”functions at distances up to 250' [76 m]. The system uses a 310-320 MHz signal.
See separate instructions about other optional features.
Operating Elevation:
Maximum = 4,500' [1,370 m]
Operating Temperatures:
32° to 104° F [0° to 40° C]
Service Life:
This lifter is designed to have a service life of 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 D ISPOSAL OF THE L IFTER 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 only when a CE Standard is different from requirements of other applicable standards. CE requirements are
mandatory in the European Union, but may be optional elsewhere.
1
Optionally available with alternative rubber compounds for special applications (see REPLACEMENTS PARTS LIST).
2
The Maximum Load Capacity is rated at a vacuum of 18 Hg [-60 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.

Rev 13.0/5-19 4 MRTALPCH6-DC: #35054
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 Maximum 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
attaching the pads (see MAINTENANCE: VACUUM PAD MAINTENANCE).
Never exceed the Maximum 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
ATTACH 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 could 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 a 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 13.0/5-19 5 MRTALPCH6-DC: #35054
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.
Standard MRTALPCH611LDC shown
1 BATTERY CHARGER
10 BATTERY TEST BUTTON
18 Cover for BATTERY
2 VACUUM RESERVE TANKS
11 VACUUM GAUGES
19 PAD FRAME
3 TILT RELEASE LEVER
12 ROTATION RELEASE LEVER
20 Cover for VACUUM PUMP and
4 VACUUM LIFT LIGHT
13 CONTROL HANDLES
VACUUM SWITCH
5 BATTERY GAUGE
14 VACUUM PAD
21 LOW VACUUM WARNING BUZZER
6 “FUNCTION” BUTTON
15 LIFT SPOOL
Not shown: QUICK CONNECTORS
7 “ATTACH” BUTTON
16 PAD FRAME EXTENSION
AIR FILTERS, STROBE LIGHT (optional)
8 “RELEASE” BUTTON
17 LIFT BAR
and RADIO RECEIVER (optional)
9 POWER SWITCH

Rev 13.0/5-19 6 MRTALPCH6-DC: #35054
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.
3
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.
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.
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.
3
When the pad frame is used in the vertical orientation (see illustration in OPERATING FEATURES), placing the lift spool in the
lowest position creates interference with the pad frame extension. To avoid this problem, place the lift spool in one of the other
two positions or remove the pad frame extensions (see TO CHANGE THE PAD FRAME CONFIGURATION to follow).

Rev 13.0/5-19 7 MRTALPCH6-DC: #35054
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 13.0/5-19 8 MRTALPCH6-DC: #35054
TO CHANGE THE PAD FRAME CONFIGURATION
The lifter offers 2 pad frame configurations to accommodate different load dimensions and
weights (see SPECIFICATIONS: Pad Spread and Maximum Load Capacity). Select the
configuration that provides optimal support across the load surface and minimizes load overhang
(see OPERATION: BEFORE USING THE LIFTER).
Vacuum pads corresponding with the 2 circuits of the dual vacuum system are marked “1” and
“2” in the illustration above (see To Route Vacuum Hoses to follow). The distribution of pads is
designed to optimize load support for each circuit.
To support longer, heavier loads, both pad frame extensions must be installed on the pad frame
and the vacuum hoses must be connected to the vacuum pads located on the extensions.
WARNING: Removing any extension or disconnecting the corresponding vacuum
pad reduces load capacity of lifter.
To support smaller dimensions and weights, the pad frame extensions 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 (see INTENDED USE: LOAD
CHARACTERISTICS). The Load Capacity is reduced when the pad frame extensions are removed.
WARNING: Either install both extensions or remove both.
Always assemble the pad frame with both extensions installed or both removed, to keep the lifter
balanced.