National Crane
Published 5-27-2018 Control # 039-06
2-15
800D
OPERATION
Example 3
A load of 2500 lb (1134 kg) is to be lifted from the roof of a
building at a radius of 30 ft (9.14 m) and a height of 115 ft
(35,05 m) and placed on the ground on the other side of the
truck at a radius of 40 ft (12.19 m).
Step 1.
Weight of load and load handling equipment.
Step 2.
Starting Radius
Step 3.
Ending Radius
Step 4.
Refer to Crane Capacity Chart.
To reach the load on the roof, the jib must be utilized to clear
the roof with the load.
Important: Do not attempt to deploy
the jib until reading and understanding jib operation
information found later in this section of the manual.
Both the retracted 25 ft (7.62 m) jib length and extended 44 ft
(13.41 m) jib length have the necessary capacity at a 30 ft
(9.14 m) radius. Only the retracted 25 ft (7.62 m) jib has the
capacity at the 40 ft (12.19 m) radius to accomplish the task.
Starting Point: With the 25 ft (7.62 m) jib deployed and the
boom fully extended, the capacity is 3900 lb (1769 kg) at a
30 ft (9.14 m) radius and boom angle of 78°.
Ending Point: With the main boom still fully extended, the
capacity is 2800 lb (1270 kg) at a radius of 40 ft (12.19 m)
and boom angle of 73°.
Note: The capacity of the jib remains the same even with
the main boom retracted. Operate with jib by radius
when main boom is fully extended and operate with jib
by boom angle when main boom is not fully extended.
Do not exceed rated jib capacities at any reduced boom
lengths.
Step 5.
Refer to hoist Capacity Chart.
The capacity of a 1 part line is 7700 lb (3492 kg) which is well
above the 2680 lb (1216 kg) to be lifted.
Note: The HCA Load Range Gauge does not provide
accurate indication of overload conditions when
operating with a jib deployed. The Hydraulic Capacity
Alert System will not prevent the crane from being
operated in an overload condition.
The operator should proceed to lift the load as smoothly as
possible.
Load =
1 Part Line Block =
Slings =
2500 lb
150 lb
30 lb
(1134 kg)
(68 kg)
(14 kg)
2680 lb (1216 kg)
Given = 30 ft (9.14 m)
Given = 40 ft (12.19 m)
Fo
r
Reference
Only
Содержание National Crane 800D
Страница 1: ...Operator and Service Manual National Crane 800D F o r R e f e r e n c e O n l y ...
Страница 4: ...F o r R e f e r e n c e O n l y ...
Страница 98: ...MAINTENANCE 800D 3 10 Published 5 27 2018 Control 039 06 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Страница 194: ...SPECIFICATIONS 800D 8 4 Published 5 27 2018 Control 039 06 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Страница 216: ...INSTALLATION 800D 9 22 Published 5 27 2018 Control 039 06 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Страница 232: ...CRANE INSTALLATION 800D 10 16 Published 5 27 2018 Control 039 06 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Страница 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 ...
Страница 255: ...F o r R e f e r e n c e O n l y ...
Страница 256: ...F o r R e f e r e n c e O n l y ...