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.
A. Check the clamp to be certain the identification and
warning tags are present and legible.
B. Do not use the clamp if the tags are missing or illegible.
C. Inspect gripping surfaces for wear and defects. Gripping sur-
faces must be sharp and free of foreign matter.
D. Inspect condition of body for wear, damage and distortion,
particularly in the area of the jaw opening.
E. Inspect lifting shackle and all pins for wear and damage.
F. Lock spring must have definite amount of tension when the
lock is moved to the “Lock Closed” position without material
in the clamp. Lock pawl must rest on body spacer sleeve.
G. On the model lPA the auxiliary lock button must have a posi-
tive spring action that projects it out to engage the lock han-
dle when the handle is moved to the “Lock Closed” position.
H. Remove from service any clamp in need of repair.