8
SAFETY INSTRUCTIONS (CONT.)
■
Always use horizontal plate clamps in
pairs with the correct type, size and
length sling and reeved in the manner for
which they are designed. Some of these
clamps are designed to be used with an
endless loop of chain whilst others are
for use with a two leg sling. Under no
circumstances must an endless loop be
substituted for a two leg sling or vice
versa as this will alter the geometry and
therefore the gripping forces on which the
clamps rely for their safe operation.
■
If the plates are likely to sag transversely,
clamps which grip the plate by a cam
must be used.
■
Position the clamps correctly. Place
the clamps over the centre of gravity of
the plate. If the plate is long and has a
tendency to bend use two or more pairs
of clamps in conjunction with a spreader
beam, equally disposed about the centre
of gravity, to minimise the sag. Ensure the
clamps face each other to balance the
horizontal clamping forces.
■
Take care to ensure no one clamp takes
more than its rated capacity.
■
Put the clamps onto the plate as far as
they will go.
■
If the sling is adjustable to accommodate
various widths of plate ensure it is
adjusted to give the correct geometry
■
Never attempt to rotate from the
horizontal to the vertical or vice versa
with this type of clamp.
DON’T FORGET!!
■
Never
overload a plate clamp
■
Never
use a single clamp – always in
pairs
■
Never
exceed the permitted maximum
or minimum thickness
■
Never
substitute an endless loop for a
two-leg sling or vice versa
■
Never
exceed the permitted range of
sling leg angles
■
Never
use the cam-less type if the
plate can sag
■
Never
attempt to rotate from the
horizontal to the vertical with this
type of clamp
USING THE HORIZONTAL PLATE CLAMP SAFELY
Summary of Contents for GLUC050
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