WPG MT410TAC User manual

Rev 32.0/11-23 MT-10TAC: #350891
MANUAL TILTER,
AC-VOLTAGE
Model numbers: MT410TAC, MT610TAC,
MT810TAC (shown), MT1010TAC
908 W. Main • P.O. Box 368
Laurel, MT USA 59044
800-548-7341
406-628-8231
www.WPG.com
Original Instructions © Wood’s Powr-Grip Co., Inc.
READ AND UNDERSTAND BEFORE
OPERATING THIS EQUIPMENT
OPERATING
INSTRUCTIONS
INTENDED FOR USE BY PROFESSIONAL EQUIPMENT OPERATORS
APPLICABLE TO SERIAL NUMBERS 20220001
AND LATER. FOR EARLIER NUMBERS,
SEARCH WPG’S ARCHIVE.

MT-10TAC: #35089 Rev 32.0/11-232

Rev 32.0/11-23 MT-10TAC: #350891
SPECIFICATIONS .....................................................................................3
SAFETY...................................................................................................5
OPERATING FEATURES............................................................................6
ASSEMBLY..............................................................................................7
INTENDED USE .......................................................................................9
LOAD CHARACTERISTICS.................................................................................9
INDIRECT LOADING .....................................................................................10
OPERATING ENVIRONMENT..........................................................................10
DISPOSAL OF THE LIFTER .............................................................................10
OPERATION..........................................................................................11
BEFORE USING THE LIFTER...........................................................................11
Taking Safety Precautions .................................................................................................11
Performing Inspections and Tests .....................................................................................11
TOUSE THE PAD SHUTOFFS .........................................................................12
TOATTACH THE PADS TO ALOAD ..................................................................13
Generating Airflow............................................................................................................13
Positioning the Lifter on the Load.....................................................................................13
Sealing the Pads on the Load............................................................................................14
Reading the Vacuum Gauge..............................................................................................14
TOLIFT AND MOVE THE LOAD......................................................................15
Interpreting the Vacuum Gauge .......................................................................................15
Monitoring the Vacuum Gauge.........................................................................................15
Controlling the Lifter and Load .........................................................................................15
In Case of a Power Failure.................................................................................................16
TOTILT THE LOAD ......................................................................................17
TOLAND THE LOAD ....................................................................................17
TORELEASE THE PADS FROM THE LOAD .........................................................18
AFTER USING THE LIFTER.............................................................................18
Storing the Lifter ...............................................................................................................19
Transporting the Lifter ......................................................................................................19
INSPECTIONS AND TESTS......................................................................20
INSPECTION SCHEDULE ................................................................................20
TABLE OF CONTENTS

MT-10TAC: #35089 Rev 32.0/11-232
TESTING ...................................................................................................21
Lifter/Load Compatibility Test...........................................................................................21
Operational Tests ..............................................................................................................22
Vacuum Test......................................................................................................................22
Rated Load Test.................................................................................................................23
MAINTENANCE ....................................................................................24
VACUUM PAD MAINTENANCE.......................................................................24
Pad-to-Load Friction Coefficient .......................................................................................24
Pad Inspection ..................................................................................................................24
Pad Cleaning .....................................................................................................................25
TOREPLACE SEALING RING IN VPFS10T PADS ...............................................26
REPLACEMENT PARTS...........................................................................27
REGISTRATION AND LIMITED WARRANTY ............................................28
TOREGISTER THIS WPG PRODUCT ...............................................................28
ABOUT THE LIMITED WARRANTY ..................................................................28
Obtaining Warranty Service or Repair Service..................................................................28
TABLE OF CONTENTS

Product
Description
Designed for use with hoisting equipment, MT-10TAC lifters support loads using vacuum and
manipulate loads using manual 90° tilt motions.
Model
Number
MT410TAC
(4 vacuum pads)
MT610TAC
(6 vacuum pads)
MT810TAC
(8 vacuum pads)
M1010TAC
(10 vacuum pads)
Maximum
Pad Spread
(to outer edges)
11¾" x 53¾"
[30 cm x 137 cm]
11¾" x 77¾"
[30 cm x 197 cm]
21¼" x 77¾"
[54 cm x 197 cm]
33¼" x 77¾"
[85 cm x 197 cm]
Maximum Load
Capacity1
1...... 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:150 lbs [68 kg]
Total: 600 lbs [270 kg]
Per pad:150 lbs [68 kg]
Total: 900 lbs [270 kg]
Per pad:150 lbs [68 kg]
Total: 1200 lbs [270 kg]
Per pad:150 lbs [68 kg]
Total: 1500 lbs [270 kg]
Lifter
Weight 90 lbs [41 kg] 105 lbs [48 kg] 115 lbs [53 kg] 130 lbs [59 kg]
Vacuum Pump
Assembly Weight 40 lbs [19 kg]
Vacuum Pads
(standard rubber2
2...... Available with other rubber compounds for special purposes (see www.wpg.com).
)
10" [25 cm] nominal diameter with replaceable sealing rings for rough or textured surfaces (Model
VPFS10T).
Power
Source See serial number plate for specific AC voltage, frequency and amperage.
Tilt
Capability Manual, 90°
Product
Options
Available with Center Spool Lift Bar.
Available with Frame-Mounted AC Power System.
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 intended3
3...... Vacuum pads, filter elements and other wear-out items are excluded.
ASME Standard
BTH-1 Design Category "B", Service Class "0"
Troubleshooting
Guide TST-016_GENERIC_LEAK_TEST_rev_2014-086
Rev 32.0/11-23 MT-10TAC: #350893
SPECIFICATIONS

MT-10TAC: #35089 Rev 32.0/11-234
Note: Standard MT-10T vacuum lifters are shown.
SPECIFICATIONS

Rev 32.0/11-23 MT-10TAC: #350895
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”).
Make sure to consider all possible
effects of “INDIRECT LOADING” on lifting
capacity (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 pads are clean
before attaching the lifter (see
“MAINTENANCE”).
Position the vacuum pads correctly on
the load before lifting (see
“OPERATION”).
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.

MT-10TAC: #35089 Rev 32.0/11-236
Features shown here are underlined on their first appearance in each section following.
1 LIFT SLING 2 VACUUM PAD
3PADFRAME 4PADSHUTOFF
5POWERSWITCH 6 VACUUM CONTROL VALVE
7 VACUUM GAUGE 8CONTROLHANDLES
9AIRFILTERS 10 VACUUM PUMP ASSEMBLY
Note: A standard MT810TAC 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 32.0/11-23 MT-10TAC: #350897
ASSEMBLY
1) Remove all shipping materials and save them with the shipping container for future use.
2) Suspend the lifter from appropriate hoisting equipment:
2.1)
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.
2.2)
2A
Make sure the lift slings
are securely attached to
the lifter (circled in fig.
2A).
2.3)
Make
sure
hook has
restraining
latch (circled
right).
2B
Attach the free eye of
each lift sling to the
hoisting equipment
hook (fig. 2B).1
Only use clevis and clevis pin rated for
Maximum Load Capacity plus Lifter Weight.
Note: A large clevis makes it
easier to connect or
disconnect the lift slings.
2.4) Use the hoisting equipment to remove the lifter from
the shipping container. Avoid damaging the vacuum
pads.
2C
Remove the pad covers (fig. 2C) and save them
for future use.
1..... If the lifter has a Center Spool Lift Bar, disregard the directions about lift slings. Instead, attach the hoisting equipment hook directly to the lift
spool. All other directions and warnings still apply.

3A
MT-10TAC: #35089 Rev 32.0/11-238
3) Attach the vacuum pump assembly securely to the hoisting equipment in a protected
location where the vacuum package will move with the lifter and will not interfere with
hoisting equipment (see arrows in fig. 3A for two potential mounting locations).1, 2
4)
Make sure power source has ground fault circuit
interrupter.
Connect the power cable:
4.1)
Wiring must be done 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.
4.2) Route the power cable so that it does not become damaged during operation.
4.3)
4A 4B
Insert the power cable’s
male connector into the
female connector and twist
to secure them together
(figs. 4A-B).
5) Perform tests as required under “TESTING”.
1..... For lifters equipped with the Frame-Mounted AC Power System, disregard the directions about mounting the vacuum pump assembly on the
hoisting equipment.
2..... Consult the hoisting equipment manufacturer to determine how to mount the vacuum pump assembly in a safe location that will not interfere
with hoisting equipment operation.
ASSEMBLY

Rev 32.0/11-23 MT-10TAC: #350899
INTENDED USE
LOAD CHARACTERISTICS
Do NOT lift explosives, radioactive
substances or other hazardous materials.
Make sure the vacuum lifter is intended
to handle each load according to these
requirements:
• The load weight must not exceed the Maximum Load Capacity.
• The load must be a single piece of relatively nonporous material with a flat and
relatively smooth contact surface.1, 2To determine whether the load is too porous or
rough, perform the “Lifter/Load Compatibility Test”.
• The load's contact surface must be able to obtain a friction coefficient of 1 with the lifter's
vacuum pads(see “Pad-to-Load Friction Coefficient”). Otherwise, the capacity should be
derated appropriately.
• The load's surface temperature must not exceed the Operating Temperatures.3
• The load's minimum length and width are determined by the current Pad Spread
(see “SPECIFICATIONS”).
• The load's maximum length and width are determined by its allowable overhang.4
• Although load thickness is not restricted, it may affect the lifter’s hang angle and the
amount of operator effort required for handling loads.
Note: Standard vacuum pads can stain or deform load surfaces with light colors or soft
coatings. Test such surfaces for damaging effects before using the lifter on them.5
1..... Although concave vacuum pads can also attach to some curved loads, curvature can reduce lifting capacity. Contact WPG for more information.
2..... A “single piece” of material includes curtainwall assemblies, unitized glazing systems and similar construction units.
3..... Vacuum pads made from a heat-resistant rubber compound can enable you to lift loads with higher surface temperatures. Contact WPG or an
authorized dealer for more information.
4..... The allowable overhang is the amount of load material that can extend sideways beyond the vacuum pads without breaking or otherwise being
damaged. This depends on the load material, its thickness, and the angle of handling (if any). Since every material has different physical
properties, the allowable overhang must be evaluated separately for each load type. Contact WPG or an authorized dealer for more
information.
5..... Alternative rubber compounds are available for these purposes. Contact WPG or an authorized dealer for more information.

MT-10TAC: #35089 Rev 32.0/11-2310
INDIRECT LOADING
Indirect loading
can reduce
lifting capacity.
Make sure to account for dynamic loading or other inadvertent
loading that can negatively affect lifting capacity, such as:
• Weight amplification that results when a loaded vacuum lifter
abruptly starts/stops moving, changes direction or bounces up
and down (eg, when a telehandler transports a loaded lifter across rough terrain).
• External force that effectively increases the weight of a lifter’s attached load (eg, when a
load of sheet material reacts to wind gusts).
OPERATING ENVIRONMENT
Make sure the lifter is suitable for each work environment, given the following restrictions:
•
Never use lifter
in dangerous
environments.
This lifter is not intended for any environment that is
dangerous to the operator or damaging to the lifter. Avoid
environments containing explosives, caustic chemicals and
other dangerous substances.
Metal particles and similar environmental contaminants could result in
vacuum pump failure.
• The work environment is limited by the Operating Elevation and Operating
Temperatures.1, 2
• The lifter is not designed to be watertight.
Moisture can reduce
lifting capacity.
Do not use it
in rain or other unsuitable conditions.
CE/UKCA — A secondary positive holding device is required to lift loads on construction sites.
DISPOSAL OF THE LIFTER
After the Service Life of the lifter has ended (see “SPECIFICATIONS”), dispose of it in compliance
with all local codes and applicable regulatory standards.
1..... Although lifter use may be possible at higher elevation, lifting capacity is reduced whenever the lifter is unable to attain vacuum in the green
range on the vacuum gauge. Contact WPG for more information.
2..... Special provisions may allow the lifter to operate outside the specified temperature range. Contact WPG for more information.
INTENDED USE

Rev 32.0/11-23 MT-10TAC: #3508911
OPERATION
BEFORE USING THE LIFTER
Determine whether the vacuum lifter is capable of each intended task (see “SPECIFICATIONS”
and “INTENDED USE”). Then complete the following preparations:
Taking Safety Precautions
•
Read all directions and safety rules before using
lifter.
Always wear appropriate personal protective
equipment.
Be trained in all industry
and regulatory standards
for lifter operation in your
region.
• Follow trade association
guidelines about precautions needed for each load material.
Performing Inspections and Tests
• Follow the “INSPECTION SCHEDULE”and “TESTING”.
•
Examine air filters regularly
and service when needed.
Service each air filter whenever its bowl contains
liquid or other contaminants or its element
appears dirty (see “AIR FILTER MAINTENANCE” in
SERVICE MANUAL).1
1..... Lifters used on wet load surfaces must be equipped with 2 or more filters connected in series. See “OPERATING ENVIRONMENT”for restrictions.

MT-10TAC: #35089 Rev 32.0/11-2312
TOUSE THE PAD SHUTOFFS
Each pad shutoff on the pad frame controls the vacuum line to the adjacent vacuum pad.
Activating or deactivating the airflow at specific pads enables the lifter to handle loads with
different weights and dimensions (see “SPECIFICATIONS”) or to avoid holes in the load surface.
Closing any pad shutoff
reduces lifting capacity.
To support the maximum load weight and larger load
dimensions, all pads must be activated; for smaller weights
and dimensions, some pads may be deactivated, provided
that the lifter still has sufficient capacity to support the
load (see “LOAD CHARACTERISTICS”).
1A 1B
To activate a pad,
open the shutoff
valve (ie, place
lever parallel with
vacuum line —
fig. 1A).
To deactivate a
pad, close the
shutoff valve (ie,
place lever
perpendicular to
vacuum line —
fig. 1B).
To calculate the lifting capacity when some pads are deactivated, consult the Per-Pad Load
Capacity and multiply by the number of pads currently activated. Always activate pads in
a symmetrical configuration and use as many pads as possible for each load being lifted, to
maximize lifting capacity and to minimize load overhang.
OPERATION

Rev 32.0/11-23 MT-10TAC: #3508913
TOATTACH THE PADS TO ALOAD
Generating Airflow
1A
Place the power switch in the “on” position ( — fig. 1A),
to engage the vacuum pump.
Keep pump running throughout lift.
The lifter is designed for the vacuum pump to run
continuously. Placing the power switch in the “off”
position ( ) during lifter operation could result in a load release and personal injury (see “In
Case of a Power Failure”).
Positioning the Lifter on the Load
1)
1B
Make sure the contact surfaces of the load and vacuum pads
are clean (fig. 1B; see “Pad Cleaning”).
2)
2B
Determine which will be the top edge of
the load while lifting, and position the
long row of vacuum pads near that edge
(fig. 2B).
Make sure all activated pads will fit on
the load and will be loaded evenly.
Consult the Per-Pad
Load Capacity.
3)
3B
Center the pad frame from left to right on the load
(fig. 3B).
OPERATION

MT-10TAC: #35089 Rev 32.0/11-2314
Sealing the Pads on the Load
1)
1A
Place the pads in contact with the load
surface. Then place the vacuum control
valve lever parallel with the vacuum line
(ie, “attach” position — fig 1A).1
Keep control valve in “attach”
position throughout lift.
2) Press the lifter firmly against the load to help the activated pads begin to seal.2
Reading the Vacuum Gauge
A vacuum gauge shows the current vacuum level in positive inches of Hg and negative kPa:
•
1B 2B
Green range (>16" Hg [-54 kPa]): Vacuum
level is sufficient to lift the maximum load
weight (fig. 1B).
• Red range (<16" Hg [-54 kPa]): Vacuum
level is not sufficient to lift the maximum
load weight (fig. 2B).
If it takes more than 5 seconds for the vacuum
level to reach 5" Hg [-17 kPa], press on any
vacuum pad that has not yet sealed.
Once the pads have sealed, the lifter should be able to maintain sufficient vacuum for lifting,
except when used above the maximum Operating Elevation.3If it does not, perform the
“Vacuum Test”.
1..... Do not place the vacuum control valve in the “attach” position unless the vacuum pads are contacting the load.
2..... Although a vacuum pad may become distorted during shipping or storage, this condition should correct itself with continued use.
3..... If the lifter is used above the maximum Operating Elevation (see “SPECIFICATIONS”), it may not be able to maintain sufficient vacuum for lifting.
Contact WPG for more information.
OPERATION

Rev 32.0/11-23 MT-10TAC: #3508915
TOLIFT AND MOVE THE LOAD
Interpreting the Vacuum Gauge
Never lift load unless vacuum gauge registers
in the green range, because premature lifting
could result in load release and personal injury.
Vacuum is sufficient to lift the
Maximum Load Capacity
whenever the vacuum gauge registers
in the green range.
Monitoring the Vacuum Gauge
1A
Monitor the vacuum gauge (fig. 1A) throughout the entire lift.
Make sure vacuum gauge remains completely
visible.
The vacuum pump runs continuously to maintain sufficient
vacuum for lifting the maximum load weight.
However, if the vacuum gauge shows a level less than 16" Hg
[-54 kPa]:
1)
Stay clear of any suspended load while
gauge warns of insufficient vacuum.
Keep everyone away from a
suspended load until it can be safely
lowered to a stable support.
2) Stop using the lifter until the cause of the vacuum loss can be identified: Conduct the
“Pad Inspection” and perform the “Vacuum Test”.
3) Correct any faults before resuming normal operation of the lifter.
Controlling the Lifter and Load
1B
When the lifter is ready, use the hoisting equipment to raise
the lifter and load as needed.
Use a control handle (see arrow in fig. 1B) to keep the lifter
and load in the required position.
Once there is enough clearance, you may move the load as
required.
OPERATION

Never allow any pad shutoff to be opened or closed while lifting, because this could
result in a load release and personal injury.
MT-10TAC: #35089 Rev 32.0/11-2316
In Case of a Power Failure
A vacuum reserve tank helps maintain vacuum temporarily in the event of a power failure.
Although the lifter is designed to support the load for at least 5 minutes without power, this
depends on many factors, including the “LOAD CHARACTERISTICS”and the condition of the vacuum
pads (see “VACUUM PAD MAINTENANCE”).
Stay clear of any suspended
load during power failure.
If a power failure occurs, keep everyone away from a
suspended load until it can be safely lowered to a stable
support. Correct any faults before resuming normal
operation of the lifter.
OPERATION

Rev 32.0/11-23 MT-10TAC: #3508917
TOTILT THE LOAD
1) Make sure the load has enough clearance to tilt without contacting
anyone or anything.
2) Tilt the load to the position needed:
•
1A
Tilting the load to the upright
position (fig. 1A) happens
automatically when it is lifted.
• Tilting the load to the flat
position is accomplished
during the landing (see section
below).
TOLAND THE LOAD
• For a landing in the upright position, simply lower the load onto an appropriate support.
•
1C
1B
For a landing in the
flat position, lower
the lifter until the
bottom edge of the
load is supported
(fig. 1B).
Then carefully
move the lifter
forward, allowing
the load to tilt
while continuing to
lower it (fig. 1C).
OPERATION

MT-10TAC: #35089 Rev 32.0/11-2318
TORELEASE THE PADS FROM THE LOAD
Make sure load is at rest and fully supported before releasing
vacuum pads.
Do not move lifter until pads release completely, because such
movement could result in load damage or personal injury.
1A
Place the vacuum control valve lever
perpendicular to the vacuum line (ie, “release”
position () — fig. 1A). After the vacuum pads
release completely, the lifter can be attached
immediately to another load.1
Before you lift another load, perform the Every-
Lift Inspection (see “INSPECTION SCHEDULE”).
AFTER USING THE LIFTER
1) Place the vacuum control valve lever in the “release” position ( ).
2)
2B
Place the power switch in the “off” position
(— fig. 2B).
3) Use the hoisting equipment to lower the vacuum lifter gently onto a stable support. Then
detach the hoisting hook from the lift slings.
Caution: Do not set the lifter on surfaces that could soil or damage vacuum pads. Protect their
sealing rings by making sure each pad rests on spacers.2
1..... If the next lift is not imminent, place the power switch in the “off” position until ready to lift another load (see “AFTER USING THE LIFTER” above).
2..... Cardboard spacers are integrated into the original shipping container. Similarly shaped spacers should be used when setting the lifter on other
surfaces.
OPERATION