Wood’s Powr-Grip VL3000L - Manual (Page 12)

Rev 11.0/7-13 10 VL3000: #35161
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 T
O
L
IFT AND
M
OVE THE
L
OAD
: 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.
T
O
L
IFT AND
M
OVE THE
L
OAD
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: V
ACUUM
P
AD
M
AINTENANCE
: Cleaning), and reapply the lifter to the load. If a red-
line 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: V
ACUUM
P
AD
M
AINTENANCE
: Inspection) and consult the hand cup instructions for