Woods-powr-grip VLPL411LAC User Manual download pdf (Page 7)

Rev 15.0/12-12 5 VLPL4-AC: #35165

INTENDED USE

LOAD CHARACTERISTICS

WARNING: This lifter is NOT intended for lifting hazardous materials, such as

explosives or radioactive substances.

The operator must verify that the lifter is intended to handle each load, in accordance with the

following requirements:

• The load must not exceed the maximum allowable weight specified under Load Capacity (see

SPECIFICATIONS).

• The load must be a single piece of nonporous or semiporous material with a flat and relatively

smooth contact surface.

To determine whether the load is too porous or rough, perform the

test under Vacuum Level on Other Surfaces (see OPERATION: TO APPLY THE PADS TO A LOAD).

• The load's contact surface must be suitable for obtaining a friction coefficient of 1 with the

lifter's vacuum pads (see MAINTENANCE: VACUUM PAD MAINTENANCE: Friction Coefficient), as

verified by a friction test. If necessary, contact Wood's Powr-Grip for help in conducting a

friction test.

• In order to avoid damaging the vacuum pads, the load's surface temperature must not exceed

the allowable Operating Temperatures (see SPECIFICATIONS). However, if such an

application cannot be avoided, Wood's Powr-Grip does offer a heat-resistant rubber

compound and other solutions which may enable you to lift loads with higher surface

temperatures. Contact Wood’s Powr-Grip or an authorized dealer for more information.

• While the

minimum

length and width of the load are determined by the Pad Spread (see

SPECIFICATIONS), the

maximum

length and width are determined by the allowable

overhang, or the amount of load material that can extend sideways beyond the vacuum pads

without breaking or otherwise being damaged.

The allowable overhang depends on the kind of load material being lifted, the thickness of the

material, and the angle at which it is handled (if any). Since materials such as glass, stone or

sheet metal each have different physical properties, the allowable overhang must be

evaluated separately for each type of load. If necessary, contact Wood’s Powr-Grip or an

authorized dealer for help in determining the recommended overhang in a specific situation.

• 1" [2.5 cm] is the maximum allowable thickness of loads at the maximum weight (see

SPECIFICATIONS: Load Capacity). However, allowable thickness increases as load weight

decreases. If necessary, contact Wood’s Powr-Grip for help in determining the maximum

thickness permitted when handling any specific load.

Note: Vacuum pads can stain or deform load surfaces with light colors or soft coatings. The

operator should test such surfaces for detrimental effects before using the lifter on them.

Lifters that feature concave vacuum pads can also attach to some kinds of curved loads. Since curvature affects the lifting

capacity, contact Wood’s Powr-Grip for help in determining the Load Capacity for a particular curved load.

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Woods-powr-grip VLPL411LAC User Manual Page 7

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