![Manitowoc National Crane 800D Operator'S And Service Manual Download Page 15](http://html.mh-extra.com/html/manitowoc/national-crane-800d/national-crane-800d_operators-and-service-manual_701268015.webp)
National Crane
Published 5-27-2018 Control # 039-06
1-5
800D
SAFETY INFORMATION
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 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 hoist 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.
Working Area Limiter (If Equipped)
This crane may be equipped with a working area limiter as
part of the RCL system, designated as either Work Area
Definition System (WADS) or Working Range Limiter (WRL).
You must read and understand the operator manual before
operating the working area limiter system. Become familiar
with all proper operating procedures and with the
identification of symbol usage.
The working area limiter is intended to be used 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.
Fo
r
Reference
Only
Summary of Contents for National Crane 800D
Page 1: ...Operator and Service Manual National Crane 800D F o r R e f e r e n c e O n l y ...
Page 4: ...F o r R e f e r e n c e O n l y ...
Page 252: ...SCHEMATICS 800D 2 Published 5 27 2018 Control 039 06 F o r R e f e r e n c e O n l y ...
Page 255: ...F o r R e f e r e n c e O n l y ...
Page 256: ...F o r R e f e r e n c e O n l y ...