Safety Precautions - Crosby IP IPHNM10 Manual Del Usuario

1. General
You have chosen a crosbyiP lifting clamp.
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If CrosbyIP clamps are maintained as described in this manual, they will remain in
optimum condition. We believe that CrosbyIP clamps are the most reliable lifting
clamps available. But using reliable tools does not automatically mean that practices
are reliable. The people who work with clamps play an equally important role in reliable
lifting. Ensure that everyone who works with CrosbyIP lifting clamps has been
instructed in the proper application of the clamps.
Inter Product BV provides a 10 year warranty for its clamps. In order to benefit from this
warranty programme and for more details on maintenance procedures, please consult
www.crosbyip.com/warranty for more information.
Please read and understand these instructions before using the lifting clamp.
check when
placing the clamp
1.1

Safety precautions

that slings are
not twisted.
Proper instruction for the personnel is of vital importance. This will contribute to
„
maximum reliability in the working environment.
it is not permitted
IPHNM10 clamps may be used per pair, per three clamps or with several pairs
to stay in the
„
simultaneously for the lifting of plates. Ensure that each clamp receives its equal
danger zone of
share of the load. When using more than two clamps an equalizing beam is
the load.
recommended.
Contact your CrosbyIP Customer Service Centre before using this clamp for
no changes may
„
plates and constructions that have a radius.
be made to
Temperature: The standard lifting clamps may be used with temperatures that lie
crosbyiP clamps.
„
between 70 ºC (158 ºF) and -20 ºC (-4 ºF). For other temperatures contact your
never straighten,
CrosbyIP Customer Service Centre.
attempt to bend
There are restrictions for operation in special atmospheres (e.g. high humidity,
or heat treat
„
explosive, saline, acid, alkaline).
parts.
Loads: For proper application of the clamp consult the load diagrams1-2.
„
When using endless reeved chain the maximum admissible top angle is 60º and
„
the W.L.L. 50% of the maximum admissible W.L.L.
Ensure that all attachments between lifting eye and crane are properly fitted,
„
secured and coupled.
Several plates may be transported or lifted per lift.
„
IPHNM10 clamps may not be used for sagging plates.
„
During the descent of the load there may be no obstacles present under the load
„
that can impede the load causing a clamp to be unloaded. The clamps may only
release the load when it is in a stable position.
During the tensioning of cables or chains the clamps must remain properly
„
positioned.
Copyright © 2013 The Crosby Group LLC. All Rights Reserved.
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 affect on
„
the operation and also on the reliability of the clamp. When cleaning the clamp
care should be taken to ensuring that gripping surfaces are at all times clean, dry
and free of oil and grease. Regular cleaning will enhance the life and reliability of
the clamps.
1.2 inspection 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 illustrations 3-4 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 pressure pads (W) for wear and defects. The pressure pads should be
„
undamaged and 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 also the roll pins (P) which locks the camsegment shaft and
hinge shaft).
Check the camsegment shaft (G) and hinge shaft (F) for readily detectable wear
„
and/or damage.
Check whether the W.L.L. and the jaw opening stamped on the body corresponds
„
with the load to be lifted.
The protective cap and pressure pads are the most critical parts in the clamp and require
extra attention during inspection. Ensure that there are no pieces of the friction material
missing as this could diminish the grip.
In doubtful cases an authorised repairer should assess the clamp.
This type of clamp can prone to deformation of the hole in which the chain (D-shackle)
impinges, resulting in the hole becoming oval. When that is the case the clamp should
be removed from service immediately.
Deformation in this part is mainly due to exceeding of the maximum side loading angle
of 15°. The maximum loading angles are displayed in the the loading diagrams 1-2.
Copyright © 2013 The Crosby Group LLC. All Rights Reserved.
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