WPG LJ6VHWBP Installation

INSTRUCTIONS
Models
LJ6VHWBP
N4950WBP
N5450WBP
N6450WBP
Rev. 0.3 / 06-19 Instruction Sheet 32640

SPECIFICATIONS

Product Description
Hand cups use vacuum to lift and carry loads, as follows: A manual pump
removes air from between the rubber pad and the contact surface; an audio alarm
and a red line on the pump's plunger serve as low vacuum indicators; a check
valve allows the user to repump the cup without removing it from the contact
surface; and a release mechanism allows the cup to disengage completely.
Model Pad
LJ6VHWBP LJ6
N4950WBP G0695
N5450WBP G0725
N6450WBP G0750
*Maximum Load Capacity includes a 3:1 safety factor and requires the following:
attachment on clean, smooth, nonporous flat surfaces; a minimum vacuum level
of 17½" Hg [-59 kPa]; and a friction coefficient of 1. This rating is based on tests
of new hand cups attached to the upper, horizontal surface of static objects in
ideal conditions. Many factors can reduce the capacity, including: lifting a load
when the cup is attached to a vertical or inclined surface; or lifting a load that
applies leverage to the cup. See www.WPG.com for more information.
Low Vacuum Audio Alarm
Volume: 70 dBA at 36" [91 cm]
Power Source: one AAA size, 1.2-1.5-volt alkaline battery; automatic on/off
function
Load and Environmental Conditions
Use the cup on clean, relatively smooth, nonporous surfaces, at temperatures
from 10° to 120° Fahrenheit [-12° to 49° Celsius]. Moisture or contaminants
can reduce the slip resistance of the cup. Excessive exposure to moisture can
also damage the audio alarm or reduce its life. The red-line indicator and audio
alarm may not perform reliably at elevations above 5000 feet [1524 meters]; see
MAINTENANCE: Service.

OPERATION

To Test Audio Alarm
Prior to using the hand cup, make sure the audio alarm is functioning correctly
and can be heard clearly over ambient sound in the work environment: While
leaving the sound emission holes uncovered, depress the plunger slightly. The
audio alarm should sound; if not, see MAINTENANCE: Service.
To Attach Hand Cup
1) Position the cup on the contact surface so the red line will be visible if it
should appear while lifting the load. CAUTION: Test the cup for staining or
deformation of load surfaces with light colors or soft coatings.
2) Pump the plunger until the cup attaches completely. When the red line is
hidden and the audio alarm is silent, vacuum is sufficient for lifting.
3) Check the plunger frequently to make sure the cup remains securely
attached. If the red line appears or the audio alarm sounds while lifting, set
down the load immediately and pump the plunger until the red line is hidden
and the audio alarm is silent again (see WARNINGS).
To Release Hand Cup
1) Set the load on a secure support.
2) Pull one of the release tabs (on 6" [153 mm] cups) or press the valve
release lever (on other cups) until the cup disengages completely.
CAUTION: Remove the cup when not in use.

MAINTENANCE

Service
Since aging and wear reduce the capacity of the rubber pad, it should be replaced
at least once every 2 years or whenever damage is discovered (see Inspection).
If the audio alarm does not function normally (see OPERATION), make sure a
working battery is installed correctly (see TO REPLACE BATTERY, overleaf). If
P.O. Box 368 · 908 West Main | Laurel, MT 59044 U.S.A. | Toll Free: 1-800-548-7341 Phone: 1-406-628-8231 Fax: 1-406-628-8354
1. 90510AM Handle, Metal
2. 90524AM Plunger Assembly with Audio Alarm (WBP)
3. 49486T
49506T
49586T
4. 90500
5. 51506
6.
7. 10002
8.
9.
10. 10008
11.
12.
13.
14.
15. 90115
16. 49416T
17. 10006
29312
29334
29338
29342
64681
LVAA
* Repair Kit 90504 for Metal Cups (6, 8, 9 and Plunger Lube)
** Repair Kit 90160 for LJ6VH Cups (6, 12, 13 and Plunger Lube)
Nominal Dia. Max. Load Capacity*
6" [15 cm] 70 lbs [32 kg]
8" [20 cm] 125 lbs [57 kg]
9" [23 cm] 150 lbs [68 kg]
10" [25 cm] 175 lbs [79 kg]
Vacuum Pad, 8" [20 cm] Dia., Flat (G0695)
Vacuum Pad, 9" [23 cm] Dia., Flat (G0725)
Vacuum Pad, 10" [25 cm] Dia., Concave (G0750)
Valve Block with Release Lever & Guard
Valve Guard
Air Filter* **
Screw, 1/4-20 x 1/2"
Check Ball*
O-Ring*
Screw, 10-32 x 3/8"
Red Line
Check Valve Retainer**
Check Valve**
Release Tab
Handle, Vertical
Vacuum Pad, 6" [15 cm] Dia. (LJ6)
Screw, 10-32 x 5/16"
Not Shown
Pad Cover, 6" [15 cm]
Case, Black, 8" [20 cm]
Case, Black, 9" [23 cm]
Case, Black, 10"[25 cm]
AAA Battery
the condition persists, contact an authorized dealer or visit www.WPG.com for
assistance.
If the hand cup does not function normally, the cup face may be dirty or the cup
may require service. First clean the cup face according to the directions to follow.
If the condition persists, contact an authorized dealer or visit www.WPG.com for
assistance.
Cleaning
1) Remove the air filter from the cup face.
2) Use a clean sponge or lint-free cloth to apply soapy water or another mild
cleanser to the cup face; see WARNINGS and www.WPG.com for more
information. CAUTION: To prevent liquid from contaminating the pump,
hold the cup face-down or cover the suction hole in the filter recess.
3) Wipe all residue from the cup face.
4) Allow the cup to dry and reinstall the air filter.
Inspection
Examine and test the cup regularly to make sure it does not exhibit the following
faults:
• failure of audio alarm to function correctly (see OPERATION).
• corrosion or other indications of battery leakage inside battery chamber
(see TO REPLACE BATTERY, overleaf).
• cuts or damage to sealing edges of rubber pad.
• cracks or dents in handle or pump.
• reappearance of red line soon after attaching cup.
• sluggishness or dramatic changes in pump action.
• excessive glaze or stiffness of rubber pad.
• air filter missing from cup face.
Correct any faults before using the cup (see Service).
Storage
Store the cup in clean, dry condition within its protective carrying case. If the
cup is used once a month or less often, remove the battery (see TO REPLACE
BATTERY, overleaf) and store it separately, to prevent corrosion.
WARNINGS
Failure to observe WARNINGS could damage the hand cup or the load, or cause
injury to the user.
• Do not use the cup to lift loads that exceed the Maximum Load Capacity or
the effective capacity (see SPECIFICATIONS).
• Do not use the cup to support a person.
• Do not place the cup face against surfaces which could damage the sealing
edges.
• Avoid conditions that could cause the cup to slip or to disengage
prematurely, such as: contaminants, cuts or scratches in the cup face or
contact surface; applying the cup to porous materials; or applying pressure
against the cup edge.
• Do not use the cup to lift when the red line is visible or the audio alarm
is sounding. If the red line reappears or the audio alarm sounds frequently,
discontinue use and see MAINTENANCE: Service.
• Do not allow anything to interfere with free movement of the plunger while
the cup is attached.
• Do not touch the release tabs (on 6" [153 mm] cups) or the valve release
lever (on other cups) while lifting.
• Do not attach 10" [254 mm] diameter cups to thin, fragile materials.
• Do not use harsh chemicals (such as solvents or gasoline) or unauthorized
rubber cleaners and conditioners to clean the cup.
• Avoid contact with battery leaks because they contain chemicals that could
damage eyes, skin, clothing or the plunger assembly.
• Do not expose a battery to excessive heat (see SPECIFICATIONS:
Environmental Conditions), because this could cause the battery to explode.
N4950WBP
N5450WBP
N6450WBP
LJ6VHWBP