Wood’s Powr-Grip MRPT89DC - Manual (Page 13)

Rev 24.0/12-13 11 MRPT89DC: #35062
T
O
A
PPLY THE
P
ADS TO A
L
OAD
Powering up the Lifter
Place the power switch in the ON position ( ) (blue indicator light remains illuminated while
power is engaged). The power switch must remain in the ON position while operating the lifter. 4
WARNING: Never turn power off while operating lifter.
Placing the power switch in the OFF position ( ) 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 all vacuum pads are free of any
contaminates that could prevent the pads from sealing against the load (see MAINTENANCE:
V
ACUUM P AD M AINTENANCE ).
Center the lifter’s pad frame to within 2" [5 cm] of the load center, since off-center loading can
cause the load to rotate unexpectedly or interfere with the lifter’s tilt capability (see T
O
R
OTATE
THE
L
OAD
E
DGEWISE
or T
O
T
ILT THE
L
OAD
to follow), and it may also damage the lifter. 5 Make sure
that all vacuum pads will fit entirely on the load’s contact surface (see SPECIFICATIONS:
Maximum 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.
Sealing the Pads against the Load
The apply/release switch is located on the movable control pendant. The movable control
pendant allows the vacuum controls to be moved away from the lifter, so that the operator can
control airflow at a distance equal to the length of the pendant cord.
WARNING: Do not disconnect control pendant during lifter operation.
The movable control pendant is not intended to be disconnected during lifter operation.
Disconnecting the control pendant is likely to result in a load release and injury to the operator or
others nearby.
Turn the apply/release switch to the “APPLY” position (clockwise). This engages the vacuum
pumps, causing air to be drawn immediately at the vacuum pads. Press the lifter onto the load
until all the pads seal against it. The apply/release switch must remain in the “APPLY” position
throughout the entire lift.
WARNING: Keep apply/release switch in “APPLY” position throughout lift.
4
If a vacuum pump or any other powered component fails to function while the power switch is in the ON position, examine
each circuit breaker (adjacent to power switch) to determine whether it has interrupted the electrical circuit to the component.
Although the operator can reset the circuit breaker, the power interruption may indicate an electrical problem that requires
attention. Correct any deficiency before resuming normal operation of the lifter (see wiring diagram provided).
5
The lifter is designed to handle the maximum load weight (see SPECIFICATIONS: Maximum Load Capacity) when the load’s
center of gravity is positioned within 2" [5 cm] of the pad frame’s center point. Occasional loading deviations are permissible,
provided that the operator can maintain control of the load at all times and that the load weight is low enough to avoid damaging
the lifter.