Crosby IP IPGN10 Manual Del Usuario página 5

„ The clamping yaws may not be placed on sloping or conical surfaces. Contact your CrosbyIP
Customer Service Centre for assistance in selecting a clamp suitable for bevelled plates.
„ When the crane hook or attachment is too large and/or too heavy, use properly sized CrosbyIP
5000 stinger assembly or a chain sling with D-shackle of 75 cm (30 inch), with a strength that
corresponds to the W.L.L. of the clamp. This will, when setting the load down, prevent the
hook from descending to far allowing the clamp to open under the weight of the hook, or, in the
case of an unprotected crane hook, its descending from the lifting eye. When suspending the
clamp directly on the secured crane hook attention must be given to ensuring that the crane
hook can move freely in the lifting eye. Ensure that the crane hook and other material is
protected.
„ Remark: when handling the load, one should ensure that the load and or clamp does not
encounter obstacles which could release the load on the clamps prematurely.
„ A clamp is a device that must be clean when used. Dirt has an adverse effect on the operation
and also on the reliability of the clamp. When cleaning the clamp care should be taken to
ensuring that moving parts are lubricated and the gripping surfaces are clean. Regular cleaning
will enhance the life and reliability of the clamps.
3. Inspections protocols
Prior to every application of the clamp it is important the clamp operator inspects the clamp for
proper functioning. Attention must be paid to the following (see illustration(s) 2 for part reference):
„ Ensure that the plate surface with which the clamp is to come into contact is free of scale,
grease, oil, paint, water, ice, moisture, dirt and coatings that might impede the contact of the
gripping surface with the plate.
„ Inspect wedge (W) and segment (S) for wear and defects. The wedge and segment should be
free of moisture, dirt, grease and oil.
„ Check the body (N) and the jaw for damage, cracks or deformation (this may indicate
overloading). The clamp must open and close properly (when the operation of the clamp is stiff
or heavy, it should be removed from operation for inspection).
„ Check the lifting eye (D) and camsegment shaft (G) for readily detectable wear and/or damage.
„ Check the spring (M). The spring must have a reasonable spring force when pressing on the
hoisting eye (D) in closed position of the latches (A and B, fig. 2).
„ Make sure that no iniquities such as steel splinters, steel shavings etc. can get into the interior
of the clamp during storage and/or use of the clamp.
„ Check whether the W.L.L. and the jaw opening stamped on the body corresponds with the
load to be lifted. When this is no longer readable, remove the clamp from operation.
„ There is no minimum working load required.
The wedge and segment are the most critical parts in the clamp and require extra attention during
inspection. In doubtful cases a CrosbyIP authorised repairer should assess the clamp.
4. How to operate the clamp
The IPGN10 - IPGNS clamps are suitable for the lifting, turning and vertical transfer of (stainless)
steel and aluminium plates and constructions with minimal damaging the surfaces of the plates.
See illustrations 3 - 6 for part reference.
The clamp is fitted with two latches (A and B, A = blue, B = yellow) which ensures a safe process
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