Wood’s Powr-Grip CM1COWB - Manual (Page 4)

Rev 1.0/9-13 2 CM1COWB: #35180AFT
INSTALLATION
1) Verify that the vacuum lifter is equipped with compatible vacuum hose for installing Individual
Pad Shutoffs (see SPECIFICATIONS).
2) Determine whether the lifter has been predrilled for pad shutoffs. If so, proceed to step 5. If
not, select an appropriate location to mount a pad shutoff on the lifter: The object is to insert
the pad shutoff into a vacuum line so that only one vacuum pad will be affected. Avoid
locations that are difficult for the operator to access, that could interfere with lifter operations,
or that could be weakened when drilled to mount the pad shutoff.
3) Using the brackets of the pad shutoff as a template, mark the location of the 2 mounting
holes on the lifter's pad frame, and drill 0.201" (#7) diameter holes at the marked locations.
4) Thread the 2 mounting holes with a 1/4-20 tap.
5) Use the bolts and washers supplied to mount the pad shutoff securely on the pad frame.
6) Use the existing vacuum hose and vacuum fittings supplied as necessary to connect a single
vacuum pad to the pad shutoff. Cut off used ends of vacuum hose when damaged, and make
sure all vacuum hoses are attached securely to barbed fittings.
Note: If the vacuum pad is located at the end of a pad arm, vacuum fittings may not be
needed to attach the vacuum hose to the pad shutoff.
7) Repeat steps 2-6 for each pad shutoff mounted on the lifter. Then perform a V
ACUUM
T
EST
as
directed in the lifter's instruction manual.
OPERATION
Operate the vacuum lifter as directed in the lifter's instruction manual, taking into account
differences in load capacity and pad spread resulting from the use of Individual Pad Shutoffs, as
follows:
Before applying the lifter to a load, activate or deactivate vacuum pads as needed for the load’s
specific weight and dimensions: To support the maximum load weight and larger load
dimensions, all pads must be activated; for smaller weights and dimensions, some pads may be
deactivated, provided that the lifter still has sufficient capacity to support the load.
To activate a vacuum pad, open the pad shutoff (place valve lever parallel
with vacuum line); to deactivate a pad, close the pad shutoff (place valve
lever
perpendicular to vacuum line). To calculate the lifting capacity when
some pads are deactivated, consult the per-pad load capacity rating in the
lifter's instruction manual, and multiply by the number of pads currently
activated.
Note that calculated lifting capacities may not exceed
the maximum load capacity (see lifter's instruction manual).
WARNING: Closing any pad shutoff reduces lifting capacity.
CLOSED
PAD SHUTOFF VALVE