WPG 98741, Руководство по эксплуатации

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Rev 7.4/12-21 MRTALP4-DC3: #35058 13
INTENDED USE
L
OAD
C
HARACTERISTICS
Do NOT lift explosives, radioactive
substances or other hazardous materials.
Make sure the vacuum lifter is intended
to handle each load according to these
requirements:
• The load weight must not exceed the Maximum Load Capacity.
• The load must be a single piece of relatively nonporous material with a flat and
relatively smooth contact surface.
1
Flexible sealing rings can accommodate some surface
relief, provided contour changes are not too abrupt. To determine whether the load is
too porous or rough, perform the
“Lifter/Load Compatibility Test” .
• The load's contact surface must be able to obtain a friction coefficient of 1 with the lifter's
vacuum pads (see “Pad-to-Load Friction Coefficient” ). Otherwise, the capacity should be
derated appropriately.
• The load's surface temperature must not exceed the Operating Temperatures.
2
• The load's minimum length and width are determined by the current Pad Spread
(see “SPECIFICATIONS”).
• The load's maximum length and width are determined by its allowable overhang.
3
• 8" [20 cm] is the allowable thickness at Maximum Load Capacity.
4
Note: Standard vacuum pads can stain or deform load surfaces with light colors or soft
coatings. Test such surfaces for damaging effects before using the lifter on them.
5
O
PERATING
E
NVIRONMENT
Make sure the vacuum lifter is intended for use in each work environment, given the following
restrictions:
1..... A “single piece” of material includes curtainwall assemblies, unitized glazing systems and similar construction units.
2..... Vacuum pads made from a heat-resistant rubber compound can enable you to lift loads with higher surface temperatures. Contact WPG or an
authorized dealer for more information.
3..... The allowable overhang is the amount of load material that can extend sideways beyond the vacuum pad without breaking or otherwise being
damaged. This depends on the load material, its thickness, and the angle of handling (if any). Since every material has different physical
properties, the allowable overhang must be evaluated separately for each load type. Contact WPG or an authorized dealer for more
information.
4..... However, the allowable thickness increases as load weight decreases. Contact WPG for more information.
5..... Alternative rubber compounds are available for these purposes. Contact WPG or an authorized dealer for more information.