Wood’s Powr-Grip MTCL6FS625DC - Manual (Page 30)

Rev 5.0/12-13 28 MTCL6FS625DC: #35078
The Load Capacity of most Powr-Grip lifters is based on a friction coefficient of 1 (only Flat Lifters
are exempt from this requirement). However, a vacuum pad's ability to maintain this friction
coefficient is reduced by factors such as contamination, wear, age and exposure to sunlight, as
well as the condition of the load's contact surface (see INTENDED USE: L
OAD
C
HARACTERISTICS
).
Pads that have surface contamination must be thoroughly cleaned (see Cleaning discussion to
follow). Over time, the foam rubber insert of a vacuum pad may experience wear and
deterioration. Pad inserts that exhibit wear, deterioration or damage must be replaced.
In addition, all pad inserts should be replaced on a regular basis, preferably after no more than 2
years, to ensure that the friction coefficient is not compromised. If necessary, contact your
dealer or Wood's Powr-Grip for more information.
Inspection
Inspect each vacuum pad for the following deficiencies routinely, as directed in the preceding
I
NSPECTION
and T
ESTING
S
CHEDULES
. Correct any deficiency before using the lifter.
• Contaminates on the pad face or sealing edge: Soil build-up can prevent pads from sealing
adequately or reduce the friction coefficient (see discussion preceding). Follow the directions
to clean pads as necessary (see discussion to follow).
• Filter screen missing from pad face: This screen helps prevent debris from plugging the
vacuum hose and the air filters. Replace any missing screen immediately (see REPLACEMENT
PARTS LIST).
WARNING: Replace pad insert if sealing edge has any nicks, cuts, abrasions or
other deterioration.
• Nicks, cuts, abrasions other deterioration in sealing edges: Pad damage can reduce the lifting
capacity. Replace any damaged pad insert immediately (see REPLACEMENT PARTS LIST).
Cleaning
Regularly clean the face of each vacuum pad to remove oil, dust and any other contaminates.
Acceptable cleaning agents include soapy water and other mild cleansers. Do not use solvents,
petroleum-based products (including kerosene, gasoline and diesel fuel) or any harsh chemicals
for cleaning. Do
not use unauthorized rubber cleaners or conditioners, such as those intended
for cleaning tires or vinyl surfaces, because those products can leave a hazardous film on vacuum
pads which significantly reduces their lifting capacity (see Friction Coefficient preceding). The
use of any unauthorized cleaning agent is prohibited because it could damage the pad and/or
create a hazard to the operator or others.
WARNING: Never use solvents, gasoline or other harsh chemicals to clean
vacuum pad.
WARNING: Never use unauthorized rubber cleaners or conditioners to clean
vacuum pad.
To prevent liquid from contaminating the vacuum system during cleaning, cover the suction hole
in the recess for the filter screen or make sure the pad faces downward. Use a clean sponge or
lint-free cloth to apply an authorized cleanser and wipe the pad face clean. A toothbrush (or
similar brush with bristles that do not harm foam rubber ) may be used to remove contaminates