Maintenance Program for Renfroe Clamps Manufactured from Steel
The severity of service to which the clamp is subjected in the work place
determines the frequency and type of inspection procedure required for
the clamp. The frequency and type of inspection is determined by the
clamp owner. Renfroe acknowledges the ASME B30.20 safety standard
which sets forth minimum inspection requirements for “Below-the-Hook”
lifting devices and the Renfroe Recommended Inspection Schedule
meets and/or exceeds the ASME inspection recommendations.
Before using a clamp operators should be trained by a qualified
person to visually inspect a lifting clamp that will include but not be
limited to the following:
Every lift Inspection:
A visual inspection by the operator before and after each lift made by the
clamp.
•
Check the clamp to be certain the Identification and
warning tags are present and legible.
•
Do not use the clamp if the tags are missing or illegible
•
Inspect gripping surfaces for wear and defects. Gripping sur-
faces must be smooth and free of foreign matter. The screw
cup and swivel jaw should turn freely. Set screw must not pro-
trude from either the screw cup pad or the swivel jaw pad.
•
Screw should turn freely. Inspect for wear and damage. Inter-
nal springs must hold swivel jaw and screw cup in “Centered”
position with the gripping surfaces at 90 degrees to the length of
the screw.
WARNING: Do not use clamp unless springs are in place and are
holding the swivel jaw and screw cup at 90 degrees to the length of
the screw.
•
Inspect the condition of the body for wear, damage and
distortion, particularly in the area of the jaw opening.
•
Inspect condition of the lifting shackle and shackle screw for
wear and damage. Shackle yoke must pivot freely about the
shackle screw. Shackle eye must rotate freely about the
shackle yoke.
Remove any clamp from service in need of repair.
