Manitowoc 999 User Manual

Reference Only
Manitowoc Published 05-15-17, Control # 043-09 2-13
999 LUFFING JIB OPERATOR MANUAL SAFETY INFORMATION
2
5. Jib stops, both physical and automatic (for fixed jib and
luffing jib)
If a jib stop is damaged or not working properly, it must
be tagged-out or removed, if possible.
6. Pedal locks for all foot-operated brakes (if applicable)
If a pedal lock is damaged or not working properly, it
must be tagged-out or removed if possible.
7. An integral holding device or check valve on each
jacking cylinder
OPERATIONAL AIDS
Manitowoc provides the following operational aids on its
cranes, either as standard equipment or optional equipment.
The operational aids are designated as Category 1 or
Category 2:
Category 1 Operational Aids
If a Category 1 operational aid is not working properly, it must
be repaired no later than 7 calendar days after the deficiency
occurs.
Exception: If the crane user documents that he/she has
ordered the necessary parts within 7 calendar days of the
occurrence of the deficiency, the repair must be completed
within 7 calendar days of receiving the parts.
1. Boom or Luffing Jib Angle Limiter
(automatic boom or jib stop)
Temporary alternative measures if inoperative or
malfunctioning:
The qualified person directing the lift shall make sure the
maximum boom or jib angle/radius specified in the
Capacity Chart for the load being handled is not
exceeded. One or more of the following methods must
be used:
a. Measure radius using a tape measure.
b. Measure the boom angle with a protractor-level on
the centerline of boom.
c. Clearly mark the boom or luffing hoist cable (so it
can easily be seen by the operator) at a point that
gives the operator sufficient time to stop the boom
or jib within the minimum allowable radius.
In addition, install mirrors or remote video cameras
and displays if necessary for the operator to see the
mark.
d. Clearly mark the boom or luffing hoist cable (so it
can easily be seen by a designated signal person)
at a point that gives the signal person sufficient time
to signal the operator and have the operator stop
the boom or jib within the minimum allowable radius.
2. Anti-Two-Block Device
Temporary alternative measures if inoperative or
malfunctioning:
The qualified person directing the lift shall establish
procedures to furnish equivalent protection. One or
more of the following methods must be used:
a. Assign a signal person to signal the operator to stop
hoisting when the load is a safe distance from the
boom or jib point.
b. Clearly mark the hoist cable (so it can easily be
seen by the operator) at a point that will give the
operator sufficient time to stop the load a safe
distance from the boom or jib point.
NOTE: The temporary alternative measures for the anti-
two-block device do not apply when lifting
personnel in load line supported baskets.
Personnel shall not be lifted in load line
supported baskets when anti-two-block
devices are not functioning properly.
Category 2 Operational Aids
If a Category 2 operational aid is not working properly, it must
be repaired no later than 30 calendar days after the
deficiency occurs.
Exception: If the employer documents that he/she has
ordered the necessary parts within 7 calendar days of the
occurrence of the deficiency, and the part is not received in
time to complete the repair in 30 calendar days, the repair
must be completed within 7 calendar days of receiving the
parts.
1. Rated Capacity Indicator/Limiter
Temporary alternative measures if inoperative or
malfunctioning:
The qualified person directing the lift shall establish
procedures for determining load weights and shall make
WARNING
Do not operate crane unless all applicable operational
aids listed in this section are in proper working order,
except:
• Where an operational aid is being repaired
• The crane user implements a specified temporary
alternative measure
If an operational aid stops working properly during
operation, the operator shall safely stop operation until
the temporary alternative measures are implemented or
the device is again working properly.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English