WPG N10TAIR User manual

Rev 5.0/3-23 #351051
INTENDED FOR USE BY SKILLED
PROFESSIONALS • READ AND
UNDERSTAND BEFORE OPERATING
OPERATING
INSTRUCTIONS 908 W. Main • P.O. Box 368
Laurel, MT USA 59044
800-548-7341 (phone)
406-628-8231 (phone)
406-628-8354 (fax)
www.WPG.com
Record serial number in blank space above (to locate, see serial
label on the product).
HANDHELD
VACUUM CUP,
AIR-POWERED
Model numbers:
N10TAIR (shown at top-left),
N4950AIR (shown at bottom-right)
KEEP FOR FUTURE REFERENCE

#35105 Rev 5.0/3-232

Rev 5.0/3-23 #351051
SPECIFICATIONS .....................................................................................3
SAFETY...................................................................................................4
OPERATING FEATURES............................................................................5
ASSEMBLY..............................................................................................6
INTENDED USE .......................................................................................7
LOAD CHARACTERISTICS.................................................................................7
OPERATING ENVIRONMENT............................................................................8
DISPOSAL OF THE HAND CUP .........................................................................8
OPERATION............................................................................................9
BEFORE USING THE HAND CUP ......................................................................9
Taking Safety Precautions ...................................................................................................9
Performing Inspections and Tests .......................................................................................9
TOATTACH THE HAND CUP TO ALOAD ............................................................9
Positioning and Sealing the Pad on the Load......................................................................9
TOLIFT AND MOVE THE LOAD......................................................................11
Interpreting the Red-Line Vacuum Indicator.....................................................................11
Lifting the Load .................................................................................................................11
Monitoring the Red-Line Vacuum Indicator......................................................................11
In Case of Power Failure....................................................................................................12
TORELEASE THE HAND CUP FROM THE LOAD .................................................12
AFTER USING THE HAND CUP ......................................................................13
INSPECTIONS AND TESTS......................................................................14
INSPECTION SCHEDULE ................................................................................14
TESTING ...................................................................................................14
MAINTENANCE ....................................................................................15
VACUUM PAD MAINTENANCE.......................................................................15
Pad-to-Load Friction Coefficient .......................................................................................15
Pad Inspection ..................................................................................................................15
Pad Cleaning .....................................................................................................................16
TOREPLACE SEALING RING IN VPFS10T PADS ...............................................17
REPLACEMENT PARTS...........................................................................18
TABLE OF CONTENTS

#35105 Rev 5.0/3-232
WARRANTY AND REGISTRATION ..........................................................19
TOOBTAIN WARRANTY SERVICE OR REPAIR SERVICE ........................................19
Contact information..........................................................................................................19
TOREGISTER THIS WPG PRODUCT ...............................................................19
TABLE OF CONTENTS

Product
Description
Designed for use with a compressed air supply, these N-Series hand cups employ vacuum for attaching
to loads, which are manually lifted and carried, offering a wide range of handling options.
Model Number N4950AIR N10TAIR
Vacuum Pad1/
1...... Available with other rubber compounds for special purposes (see www.wpg.com).
Pad Spread
(standard rubber)
8" [20 cm] nominal diameter
(Model G0695)
10" [25 cm] nominal diameter
(Model VPFS10T2
2...... Standard with replaceable sealing rings for rough or textured surfaces (see “REPLACEMENT PARTS”).
)
Maximum Load
Capacity3
3...... The Maximum Load Capacity is rated at a vacuum of 17.5" Hg [-59.25 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 “Pad-to-Load Friction Coefficient”).
125 lbs [57 kg] 150 lbs [68 kg]
Hand Cup
Weight 3.33 lbs [1.51 kg] 6.26 lbs [2.84 kg]
Power
Source Compressed air, 70-80 psi [483-552 kPa] line pressure, 2 SCFM [57 liters/minute] @ 75 psi [517 kPa]
Operating
Elevation Up to 9,000' [2,743 m]
Operating
Temperatures 10° — 120° F [-12° — 49° C]
Service
Life 20,000 lifting cycles, when used and maintained as intended4
4...... Vacuum pad and other wear-out components are excluded.
Rev 5.0/3-23 #351053
SPECIFICATIONS

#35105 Rev 5.0/3-234
SAFETY
Wear personal protective
equipment that is appropriate for
the load material. Follow trade
association guidelines.
Do not attach the hand cup to
hoists or any other lifting device. It
is designed for manual use only.
Do not make any modifications to
the hand cup (see “LIMITED
WARRANTY”).
Use the hand cup only in an
approved “OPERATING ENVIRONMENT”
(see “INTENDED USE”).
Do not use a hand cup that is
damaged, malfunctioning, or
missing parts.
Do not use a hand cup if the sealing
edge of the vacuum pad is cut or
otherwise damaged.
Do not exceed the Maximum
Load Capacity or lift loads the
hand cup is not designed for
(see “INTENDED USE: LOAD CHARACTERISTICS”).
Do not use a hand cup to lift cracked
or broken glass.
Make sure the contact surfaces of
the load and vacuum pad are clean
before attaching the pad (see
“MAINTENANCE: VACUUM PAD
MAINTENANCE”).
Position the vacuum pad correctly
on the load before lifting (see
“OPERATION: TOATTACH THE HAND CUP
TO THE LOAD”).
Do not lift a load when the red-line
vacuum indicator is visible.
Do not touch the vacuum release
button during a lift.
Do not use the hand cup to support
a person.
Position yourself and other to avoid
injury in case of an unintended load
release.

Rev 5.0/3-23 #351055
Features shown here are underlined on their first appearance in each section following.
1 VACUUM PAD
2 PLUNGER
3 RED-LINE VACUUM INDICATOR
4 HANDLE
5 VACUUM RELEASE BUTTON
6 VACUUM PUMP (VENTURI)
7 1/8” NPT MALE FITTING
Note: A standard N4950AIR handheld vacuum cup is shown. Although some of the following
photos do not show this specific hand cup, they all illustrate how this kind of hand cup functions.
For information about specific parts, see “REPLACEMENT PARTS”.
OPERATING FEATURES

#35105 Rev 5.0/3-236
ASSEMBLY
1) Remove the handheld vacuum cup (hand cup) from its carrying case or remove the pad
cover, depending on the model. Save the case or cover for future use.
2) Connect the hand cup to an appropriate compressed air supply (see Power Source under
“SPECIFICATIONS”):
2A
Use appropriate
hose and/or fittings
to connect an air
line from the
compressed air
supply to the 1/8"
NPT male fitting on
the vacuum pump
(fig. 2A and inset).
Any damage or obstruction in air line would
result in unintentional load release and
possible injury.
Make sure the air line is routed
so that it does not become
tangled, damaged or obstructed
during operation.
Note: Disconnect the compressed air line when the hand cup is not in use. Otherwise, the
air compressor with cycle frequently.
3) Adjust the air pressure regulator to supply 70 psi [483 kPa]. Exceeding this pressure
consumes more air and does not improve hand cup performance. Pressures greater than
80 psi [552 kPa] should be avoided.
4) Perform tests as required under “TESTING”.

Rev 5.0/3-23 #351057
INTENDED USE
LOAD CHARACTERISTICS
Do NOT lift explosives, radioactive
substances or other hazardous materials.
Make sure the hand cup 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.1To determine whether the load is too porous or
rough, attach the hand cup to the contact surface (see “TOATTACH THE HAND CUP TO A
LOAD”) and determine whether the red-line vacuum indicator would remain hidden
during a lift (see “Interpreting the Red-Line Vacuum Indicator”). If not, the load is not
compatible with this hand cup.
• The load's contact surface must be able to obtain a friction coefficient of 1 with the hand
cup’s vacuum pad (see “Pad-to-Load Friction Coefficient”). Otherwise, the capacity
should be derated appropriately.
• The load's surface temperature must not exceed the Operating Temperatures.2
• The load's maximum length and width are determined by its allowable overhang.3
• Although load thickness is not restricted, it may affect the angle of load orientation
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 hand cup on them.4
1..... Although concave vacuum pads can also attach to some curved loads, curvature can reduce lifting capacity. Contact WPG for more information.
2..... 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.
3..... The allowable overhang is the amount of load material that can extend sideways beyond the vacuum pad 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.
4..... Alternative rubber compounds are available for these purposes. Contact WPG or an authorized dealer for more information.

#35105 Rev 5.0/3-238
OPERATING ENVIRONMENT
Make sure the hand cup is intended for use in each work environment, given the following
restrictions:
•
Never use hand cup in
dangerous environments.
This hand cup is not intended for any environment
that is dangerous to the operator or damaging to
the hand cup. Avoid environments containing
explosives, caustic chemicals and other dangerous substances.
• The work environment is limited by the Operating Elevation and Operating
Temperatures.
• The hand cup is not designed to be watertight.
Moisture can result in
reduced lifting capacity.
Do
not use it in rain or other unsuitable conditions.
DISPOSAL OF THE HAND CUP
After the Service Life of the hand cup has ended (see “SPECIFICATIONS”), dispose of it in
compliance with all local codes and applicable regulatory standards.
INTENDED USE