Wood’s Powr-Grip MT1TL6FAIR - Manual (Page 10)

Rev 6.0/12-12 8 MT1-AIR: #35080
T
O
A
PPLY THE
P
AD TO A
L
OAD
Generating Vacuum Flow
Move the slide on the vacuum control valve to the “ON” position ( away from air pressure
regulator). This engages the vacuum pump, causing vacuum to be drawn immediately at the
vacuum pad.
WARNING: Never place control valve in "OFF" position while operating lifter;
keep pump running throughout lift.
The lifter is designed for the vacuum pump to run continuously. Any interruption of the vacuum
flow during lifter operation could result in the release of the load and possible injury to the
operator (see T
O
L
IFT AND
M
OVE THE
L
OAD
: In Case of Power Failure to follow).
Positioning the Lifter on the Load
Make certain that the contact surfaces of the load and vacuum pad are free of any contaminates
that could prevent the pad from sealing against the load (see MAINTENANCE: V
ACUUM
P
AD
M
AINTENANCE
).
The lifter is designed to automatically carry the load in an upright orientation. Determine which
will be the top edge of the load while lifting, and position the vacuum pad near that edge,
centering the pad from left to right. This position will maximize stability while lifting the load.
Make sure that the vacuum pad will fit entirely on the load’s contact surface (see
SPECIFICATIONS: Vacuum Pad). Then apply the lifter to the load until the pad seals against the
contact surface.
Note: If the 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.
Reading the Vacuum Gauge
The vacuum gauge indicates the current vacuum level in the lifter’s vacuum system. The green
range indicates vacuum levels sufficient for lifting the maximum load weight, whereas the red
range indicates vacuum levels that are not sufficient for lifting the maximum load weight. The
gauge needle should show a sudden surge in vacuum as the vacuum pad seals against the load.
If it takes more than 5 seconds for the vacuum level to reach 5" Hg [-17 kPa], apply firm
pressure at the center of the pad until it seals completely.
Vacuum Level on Optimal Surfaces
When the lifter is attached to clean, smooth, nonporous load surfaces, it should be able to
maintain a vacuum level in the green range on the vacuum gauge, except when used at high
elevations (see SPECIFICATIONS: Operating Elevation). If not, perform the V
ACUUM
T
EST
(see
MAINTENANCE) to determine whether there is a deficiency in the vacuum generating system.