VL3000 Series Hand Cup Frames Instructions - Woods Powr-Grip

VL3000 Series Hand Cup Frames Instructions - Woods Powr-Grip
KEEP FOR FUTURE REFERENCE
INSTRUCTIONS
International Version
P.O. Box 368 – 908 West Main
Laurel, MT USA 59044
phone 800-548-7341
phone 406-628-8231
fax 406-628-8354
MODEL NUMBER: VL3000S, VL3000L
SERIAL NUMBER: ___________
(please see serial label and record number here)
VERTICAL LIFT
HAND CUP FRAME
READ ALL INSTRUCTIONS AND WARNINGS
BEFORE OPERATING THIS LIFTER
DESIGNED FOR THE MATERIALS HANDLING PROFESSIONAL
TABLE OF CONTENTS
SPECIFICATIONS ............................................................................................................ 3
WARNINGS ..................................................................................................................... 4
OPERATING FEATURES ................................................................................................... 5
ASSEMBLY ....................................................................................................................... 6
INTENDED USE ............................................................................................................... 7
LOAD CHARACTERISTICS ............................................................................................................. 7
OPERATING ENVIRONMENT ......................................................................................................... 8
DISPOSAL OF THE LIFTER ............................................................................................................ 8
OPERATION .................................................................................................................... 9
BEFORE USING THE LIFTER.......................................................................................................... 9
Taking Safety Precautions ............................................................................................................................9
Performing Inspections and Tests .................................................................................................................9
TO APPLY THE PADS TO A LOAD .................................................................................................... 9
Positioning the Lifter on the Load .................................................................................................................9
Sealing the Pads against the Load ............................................................................................................... 10
TO LIFT AND MOVE THE LOAD .................................................................................................... 10
Controlling the Lifter and Load.................................................................................................................... 10
About Red-Line Indicators .......................................................................................................................... 10
Monitoring Vacuum Indicators .................................................................................................................... 10
TO RELEASE THE PADS FROM THE LOAD ....................................................................................... 11
WHEN THE LIFTER IS NOT IN USE ............................................................................................... 11
Storing the Lifter........................................................................................................................................ 11
MAINTENANCE .............................................................................................................. 12
HAND CUP MAINTENANCE ......................................................................................................... 12
INSPECTION SCHEDULE............................................................................................................. 12
Every-Lift Inspection .................................................................................................................................. 12
Frequent Inspection ................................................................................................................................... 12
Periodic Inspection .................................................................................................................................... 12
Infrequent Use .......................................................................................................................................... 12
TESTING SCHEDULE .................................................................................................................. 13
Operational Tests....................................................................................................................................... 13
Load Test .................................................................................................................................................. 13
MAINTENANCE SCHEDULE ......................................................................................................... 13
VACUUM PAD MAINTENANCE ..................................................................................................... 14
Friction Coefficient ..................................................................................................................................... 14
Inspection ................................................................................................................................................. 14
Cleaning .................................................................................................................................................... 15
VACUUM TEST ......................................................................................................................... 15
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REPLACEMENT PARTS LIST .......................................................................................... 16
LIMITED WARRANTY .................................................................................................... 17
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SPECIFICATIONS
Description:
Model Number:
Pad Spread:1
with 8"[20 cm] Hand Cups:
with 9" [23 cm] Hand Cups:
with 11" [28 cm] Hand Cups:
Lifter Weight:1
with 8"[20 cm] Hand Cups:
with 9" [23 cm] Hand Cups:
with 11" [28 cm] Hand Cups:
Load Capacity:1
with 8"[20 cm] Hand Cups:
with 9" [23 cm] Hand Cups:
with 11" [28 cm] Hand Cups:
Designed for use with a crane or other hoisting equipment, VL Series lifters
employ vacuum to hold a load for lifting in the upright orientation.
VL3000S (short center arm)
VL3000L (long center arm)
(to outer edges)
8" x 56" [205 mm x 1425 mm]
37" x 56" [937 mm x 1425 mm]
9" x 57" [231 mm x 1450 mm]
38" x 57" [963 mm x 1450 mm]
12" x 60" [305 mm x 1524 mm]
41" x 60" [1042 mm x 1524 mm]
approx. 22 lbs [10 kg]
approx. 23 lbs [11 kg]
approx. 28 lbs [13 kg]
approx. 26 lbs [12 kg]
approx. 27 lbs [13 kg]
approx. 32 lbs [15 kg]
(rated on clean, smooth, nonporous flat surfaces2)
Maximum = 270 lbs [120 kg]
Per-Pad = 90 lbs [40 kg]
Maximum = 330 lbs [150 kg]
Per-Pad = 110 lbs [50 kg]
Maximum = 450 lbs [205 kg]
Per-Pad = 150 lbs [68.5 kg]
Operating Elevation:
Red-line vacuum indicator on hand cups may not perform reliably at
elevations above 5000 ft [1524 m]; contact Wood’s Powr-Grip or an
authorized dealer for assistance before using the lifter at such elevations.
Operating Temperatures:
10° to 120° F [-12° to 49° 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 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.powrgrip.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
Specifications apply to lifters using Wood's Powr-Grip hand cups, as indicated. If another hand cup is used, consult the
manufacturer for specifications.
2
Load Capacity is based on a friction coefficient of 1; see MAINTENANCE: VACUUM PAD MAINTENANCE: Friction Coefficient for
additional information.
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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).
Always apply the lifter to surfaces which are clean, relatively smooth and nonporous. The lifter
is not designed for use on other surfaces.
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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.
Standard VL3000S and VL3000L lifters shown with Wood’s Powr-Grip 9" [23 cm] Hand Cups.
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1 CENTER ARM
3 PAD FRAME
2 HAND CUP
4 LIFT SLING
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ASSEMBLY
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) Bolt the center arm securely in place using
the bolts provided.
3) Attach each Powr-Grip hand cup to the pad
frame, as follows (see illustration):3
Remove the cotterless hitch pin from the
saddle mount for the hand cup, allowing the
saddle to slide out from the pad frame.
With the vacuum pad facing toward you,
position the handle of the hand cup in the
saddle. Then rotate the hand cup 180°
around the handle’s axis, to the orientation
shown.
Slide the saddle into the pad frame until the
mount fits snugly around the hand cup’s
handle.
Insert the cotterless hitch pin in the saddle mount to secure
the hand cup. Push the pin through the holes until the
retaining ball emerges on the far side of the pad frame arm.
1
2
3
4
5
VACUUM PAD
SADDLE MOUNT
COTTERLESS HITCH PIN
RED-LINE VACUUM INDICATOR
PLUNGER
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: 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).
WARNING: Hoisting equipment hook must be fitted with restraining latch to
prevent lift sling from slipping off under any circumstances.
Attach the hoisting equipment hook to the lift sling, and use the hoisting equipment to raise
the lifter. Now the lifter is operational.
5) Perform Operational and Load Tests for the lifter as directed in MAINTENANCE: TESTING
SCHEDULE.
3
Other hand cups may reduce load capacity or be incompatible.
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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).
WARNING: Do not attempt to lift rough or porous materials.
• The load must be a single piece of nonporous material with a flat and relatively smooth contact
surface.4 Do not attempt to lift rough or porous materials, such as unfinished wood or roughcut stone. To determine whether a load is porous or too rough, first perform the VACUUM TEST
as directed under MAINTENANCE. Once you have determined that the hand cups are capable
of maintaining vacuum on smooth, nonporous materials, perform the same test on the load in
question. If the hand cups' red-line vacuum indicators do not remain hidden, the load does
not possess the characteristics required for using this lifter.
• 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. If necessary, contact Wood's Powr-Grip for help in conducting a
friction test.
• 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.
• 1" [2.5 cm] is the maximum allowable thickness of loads at the maximum weight (see
SPECIFICATIONS: Load Capacity). However, allowable thickness increases as load weight
4
Lifters that feature concave vacuum pads can also attach to some kinds of 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.
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decreases. 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 for detrimental effects 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.
• 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.
• !!-CE-!! If the lifter is employed in a construction area, CE Standard EN 13155 requires the
use of a secondary positive holding device, such as a sling system, designed to support the
load in case of a vacuum failure.
WARNING: Where CE Standards apply, secondary positive holding device is
required for lifting loads in construction zones.
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.
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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
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).
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).
The lifter must be attached only to vertically oriented loads. Center the pad frame from left to
right on the load, and position the (uppermost) pads near the top edge. This position will
maximize stability while lifting the load. 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.
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Sealing the Pads against the Load
Make certain the entire sealing edge of each vacuum pad is contacting the load surface. Then
pump the plunger of the hand cup until the red line stays hidden, indicating that the pad is
securely attached (see TO LIFT AND MOVE THE LOAD: About Red-Line Indicators to follow).
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.
TO LIFT AND MOVE THE LOAD
WARNING: Never attempt to lift load when lifter is in horizontal
orientation.
Controlling the Lifter and Load
When the red-line vacuum indicators show that the lifter is ready, use the
hoisting equipment to raise the lifter and load as needed to clear any obstacles
in their path. Use the pad frame to keep the lifter and load in the desired
orientation while they are suspended from the crane.
About Red-Line Indicators
Each hand cup is equipped with a red-line vacuum indicator. When the red-line indicators are
hidden on all the hand cups, the lifter is ready to lift the load.
WARNING: Never attempt to lift load when any red-line indicator is visible.
Do not attempt to lift a load while any red-line indicator is visible; such an attempt could result in
a load release and possible injury to the operator.
Monitoring Vacuum Indicators
All hand cups must remain visible to the operator, so that the red-line vacuum indicators can be
monitored throughout the entire lift. If any of the hand cups experiences leakage, its red-line
indicator becomes visible, to signal the reduction in vacuum to the operator.
WARNING: Monitor red-line indicators throughout entire lift; never leave
suspended loads unattended.
Check all red-line indicators frequently to make sure the vacuum pads are attached securely. If a
red-line indicator becomes visible while you are lifting a load, move away and stay clear of the
load until it can be lowered to the ground or a stable support.
WARNING: Stay clear of suspended load while any red-line indicator is visible.
Discontinue lifter use until the cause of the vacuum loss can be determined. If it is caused by
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 a redline indicator remains visible when the lifter is attached to clean, smooth, nonporous materials,
the hand cup requires service or repair. Inspect the vacuum pad for damage (see
MAINTENANCE: VACUUM PAD MAINTENANCE: Inspection) and consult the hand cup instructions for
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service directions. Perform inspection and maintenance as needed to identify and correct any
deficiency before resuming normal operation of the lifter.
TO RELEASE THE PADS FROM THE LOAD
WARNING: Load must be fully supported before releasing vacuum pads.
When the load is at rest and fully supported, press the valve release lever (located opposite the
plunger) on each hand cup until all the vacuum pads disengage completely from the load.
WHEN THE LIFTER IS NOT IN USE
Use the hoisting equipment to gently lower the lifter onto a stable support; then detach the
hoisting equipment hook from the lift sling.
CAUTION: Do not set the lifter against any surfaces which could soil or damage the
vacuum pads.
If the lifter is transported to another location, use the original shipping container and secure the
lifter so as to protect the vacuum pads and all other components from damage while in transit.
Storing the Lifter
Use the covers supplied to keep the vacuum pads clean.
!!-CE-!! In accordance with CE Standard EN 13155, the lifter is designed to rest on relatively
horizontal surfaces without tipping over. To store the lifter in this way, set the lifter with the
pads facing downward on a clean, smooth, flat surface.
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MAINTENANCE
HAND CUP MAINTENANCE
Refer to the instructions accompanying individual hand cups for information about Inspection,
Cleaning, Service and Replacement Parts.
INSPECTION SCHEDULE
Perform inspections routinely, according to the following frequency schedule:
Every-Lift Inspection
• Examine the vacuum pads and load surface for contamination or debris.
• Examine the vacuum pads, controls and indicators for visual damage.
If any deficiency is detected during the inspection, correct it before using the lifter and perform
the Frequent Inspection to follow.
Frequent Inspection
(following every 20-40 hours’ use; or whenever lifter is out of service for 1 month or more)
• Examine the lifter’s structure for visual damage.
• Examine the hand cups (including vacuum pads) for visual damage.
• Perform the VACUUM TEST to follow.
If any deficiency is detected during the inspection, correct it before using the lifter and perform
the Periodic Inspection to follow.
Periodic Inspection
(following every 250-500 hours’ use; or whenever lifter is out of service for 1 year or more)
• Examine the entire lifter for external evidence of looseness, excessive wear, deformation,
cracks, excessive corrosion, dents to structural or functional components, cuts, or any
deficiency which might constitute a hazard.
• Keep a written record of all Periodic Inspections.
If any deficiency is detected during the inspection, return the lifter to Wood’s Powr-Grip or an
authorized dealer for repair (see LIMITED WARRANTY).
Infrequent Use
If a lifter is used less than 1 day in a 2-week period, perform the Periodic Inspection each time
before using the lifter.
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TESTING SCHEDULE
Perform these tests when placing the lifter in service initially and each time following a repair or
modification. Correct any deficiency and retest before using the lifter.
Operational Tests
• Perform the VACUUM TEST to follow.
• Test all features and functions of the lifter (see OPERATING FEATURES and OPERATION).
Load Test
Prove that the lifter can lift 100% of its Maximum Load Capacity (see SPECIFICATIONS), using an
actual load or an equivalent simulation.5 Employ the following method to test with an actual
load:
1) Place a test load with appropriate LOAD CHARACTERISTICS (see INTENDED USE) on a stable
support. Make sure the load is oriented in the upright position.6
2) Apply the vacuum pads to the load as previously directed.
3) Raise the load a minimal distance, to assure that it is supported by the lifter.
4) Hold the load for 5 minutes. The load must not slip or fall during this time period. If it does,
service the hand cups as directed in their instructions, conduct a VACUUM TEST and inspect
each vacuum pad as directed under VACUUM PAD MAINTENANCE: Inspection (see sections to
follow). Correct any deficiency that is found and retest the lifter.
MAINTENANCE SCHEDULE
Although the lifter does not require maintenance on a routine basis, maintenance must be
performed whenever a deficiency is indicated by routine inspections or tests. Any maintenance
warranted must be performed before resuming normal operation of the lifter.
5
6
ASME Standard B30.20 requires the lifter to be tested to 125% of its Load Capacity.
Flat Lifters are exempt from this requirement.
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VACUUM PAD MAINTENANCE
Friction Coefficient
The friction coefficient represents the lifter's ability to resist load slippage when the load is
oriented in any position except horizontal. If the contact surfaces of either the load or the
vacuum pads are not clean, dry and in good condition, slippage is more likely to occur.
The Load Capacity of most Powr-Grip lifters is based on a friction coefficient of 1 (only Flat Lifters
are exempt from this requirement). However, a vacuum pad's ability to maintain this friction
coefficient is reduced by factors such as contamination, wear, age and exposure to sunlight, as
well as the condition of the load's contact surface (see INTENDED USE: LOAD CHARACTERISTICS).
Pads that have surface contamination must be thoroughly cleaned (see Cleaning discussion to
follow). Over time, the rubber in a pad may experience hardening or leaching of chemicals,
resulting in stiffness or surface glaze. Pads that exhibit wear, stiffness or glaze must be replaced.
In addition, all pads should be replaced on a regular basis, preferably after no more than 2 years,
to ensure that the friction coefficient is not compromised. If necessary, contact your dealer or
Wood's Powr-Grip for more information.
Inspection
Inspect each vacuum pad for the following deficiencies routinely, as directed in the preceding
INSPECTION and TESTING SCHEDULES. Correct any deficiency before using the lifter.
• Contaminates on the pad face or sealing edges: Soil build-up can prevent pads from sealing
adequately or reduce the friction coefficient (see discussion preceding). Follow the directions
to clean pads as necessary (see discussion to follow).
• Air filter missing from pad face: This filter helps prevent debris from contaminating the vacuum
pump. Replace any missing filter immediately (see hand cup instructions).
• Nicks, cuts or abrasions in sealing edges: Pad damage can reduce the lifting capacity of the
lifter. Replace any damaged pad immediately (see hand cup instructions).
WARNING: Replace vacuum pad if sealing edge has any nicks, cuts or abrasions.
• Wear, stiffness or glaze: See Friction Coefficient preceding. Replace any pad that exhibits
wear, stiffness or glaze (see hand cup instructions).
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Cleaning
Regularly clean the face of each vacuum pad to remove oil, dust and any other contaminates.
Acceptable cleaning agents include soapy water and other mild cleansers. Do not use solvents,
petroleum-based products (including kerosene, gasoline and diesel fuel) or any harsh chemicals
for cleaning. Do not use unauthorized rubber cleaners or conditioners, such as those intended
for cleaning tires or vinyl surfaces, because those products can leave a hazardous film on vacuum
pads which significantly reduces their lifting capacity (see Friction Coefficient preceding). The
use of any unauthorized cleaning agent is prohibited because it could damage the pad and/or
create a hazard to the operator or others.
WARNING: Never use solvents, gasoline or other harsh chemicals to clean
vacuum pad.
WARNING: Never use unauthorized rubber cleaners or conditioners to clean
vacuum pad.
To prevent liquid from contaminating the vacuum pump during cleaning, cover the suction hole
in the recess for the air filter or make sure the pad faces downward. Use a clean sponge or lintfree cloth to apply an authorized cleanser and wipe the pad face clean. A toothbrush (or similar
brush with bristles that do not harm rubber) may be used to remove contaminates clinging to
sealing edges.7 Wipe all residue from the pad face, and allow the pad to dry completely before
using the lifter.
VACUUM TEST
Test all of the hand cups for leakage routinely, as directed in the preceding INSPECTION and
TESTING SCHEDULES.
1) Make sure the hand cups are functioning correctly (see hand cup instructions).
2) Apply the vacuum pads to a clean, smooth, scratch-free piece of glass or metal, as directed
under OPERATION: TO APPLY THE PADS TO A LOAD. Do not attempt to lift the test material
during the vacuum test.
3) Monitor the hand cups' red-line vacuum indicators for approximately 2 hours: All of the red
lines must remain hidden during this time. If not, perform general maintenance (see
hand cup instructions) and repeat the test. If the problem persists, contact Wood’s Powr-Grip
or an authorized dealer for assistance.
WARNING: If hand cup fails vacuum test, discontinue use immediately.
Correct any deficiency in the hand cups before resuming normal operation of the lifter.
7
If these cleaning methods are not successful, contact Wood’s Powr-Grip or an authorized dealer for assistance.
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REPLACEMENT PARTS LIST
Stock No.
Description
Qty.
91820
Hand Cup - Model N6292 / 11" [28 cm] Diameter - Lipped
3
91700
Hand Cup - Model N5450 / 9" [23 cm] Diameter
3
91500
Hand Cup - Model N4950 / 8" [20 cm] Diameter
3
91400
Hand Cup - Model N4000 / 8" [20 cm] Diameter
3
56670
Lift Sling
1
49110
End Plug - 2" x 2" x 3/16" [50.8 mm x 50.8 mm x 4.8 mm] Tubing Size
2
29350
Pad Cover
3
13516
Cotterless Hitch Pin - 3/8" x 2½" [10 mm x 64 mm]
3
SERVICE ONLY WITH IDENTICAL REPLACEMENT PARTS
SUPPLIED BY OR APPROVED BY WOOD'S POWR-GRIP CO., INC.
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LIMITED WARRANTY
Powr-Grip products are carefully constructed, thoroughly inspected at various stages of
production, and individually tested. They are warranted to be free from defects in workmanship
and materials for a period of one year from the date of purchase.
If a problem develops during the warranty period, follow the instructions hereafter to obtain
warranty service. If inspection shows that the problem is due to defective workmanship or
materials, Powr-Grip will repair the product without charge.
WARRANTY DOES NOT APPLY WHEN:
Modifications have been made to the product after leaving the factory.
Rubber portions have been cut or scratched during use.
Repairs are required due to abnormal wear and tear.
The product has been damaged, misused, or neglected.
If a problem is not covered under warranty, Powr-Grip will notify the customer of costs prior to
repair. If the customer agrees to pay all repair costs and to receive the repaired product on a
C.O.D. basis, Powr-Grip then will proceed with repairs.
TO OBTAIN REPAIRS OR WARRANTY SERVICE
For purchases in North America:
Contact the Technical Service Department at Wood’s Powr-Grip Co.. When factory service
is required, ship the complete product--prepaid--along with your name, address and
phone number to the street address hereafter.
For purchases in all other localities:
Contact your dealer or the Technical Service Department at Wood’s Powr-Grip Co. for
assistance.
Wood's Powr-Grip Co., Inc.
908 West Main St. / P.O. Box 368
Laurel, MT USA 59044
phone 800-548-7341
phone 406-628-8231
fax 406-628-8354
Rev 11.0/7-13
17
VL3000: #35161
Rev 11.0/7-13
18
VL3000: #35161
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