GROVE
2-5
TMS800E13 OPERATOR MANUAL
SAFETY INFORMATION
2
Published 02-06-2014, Control # 495-00
Two-blocking is more likely to occur when both the main and
auxiliary hoist lines are reeved over the main boom nose and
b o o m e x t e n s i o n n o s e r e s p e c t i v e l y. A n o p e r a t o r,
concentrating on the specific line being used, may telescope
or lower the boom allowing the other hoist line attachment to
contact the boom or boom extension nose, thus causing
damage to the sheaves, or causing the wire rope to fail,
dropping the lifting device to the ground and possibly injuring
personnel working below.
Caution must be used when lowering the boom, extending
the boom or hoisting up. Let out load line(s) simultaneously
to prevent two-blocking the boom tip(s) and the hook block,
etc. The closer the load is carried to the boom nose the more
important it becomes to simultaneously let out wire rope as
the boom is lowered. Keep load handling devices a minimum
of 107 cm (42 in) below the boom nose at all times.
Two-blocking can be prevented. Operator awareness of the
hazards of two-blocking is the most important factor in
preventing this condition. An Anti-Two-Block System is
intended to assist the operator in preventing dangerous two-
block conditions. It is not a replacement for operator
awareness and competence.
Never interfere with the proper functioning of operational
aids or warning devices.
Work Area Definition System (WADS) (If
Equipped)
If your crane is equipped with a WADS, you must read and
understand the manufacturer’s
Operator’s Manual
before
operating the system. Become familiar with all proper
operating procedures and with the identification of symbol
usage.
The work area definition system is intended as an aid to the
operator. It is not a substitute for safe crane operating
practices, experience and good operator judgements.
CRANE STABILITY/STRUCTURAL
STRENGTH
To avoid death or serious injury, ensure that the crane is on a
firm surface with load and crane’s configuration within
capacity as shown on the crane’s
Load Chart
and notes.
Ensure all pins and floats are properly installed and outrigger
beams are properly extended before lifting on outriggers. On
models equipped with outriggers that can be pinned at the
mid-extend position (vertical stripe, if applicable), the
outriggers must also be pinned when operating from the mid-
extend position.
Reference Only
