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National Crane
PUBLISHED 04-26-2019 CONTROL # 113-09
2-35
600E2 OPERATOR MANUAL
SAFETY PRECAUTIONS
2
PARKING AND SECURING
When parking on a grade, apply the parking brake and chock
the wheels.
The Controls and Operating Procedures section of this
manual provides instructions for parking and securing
equipment when it is to be left unattended. These
instructions are intended to allow the equipment to be placed
in the most stable and secure position. However, National
Crane recognizes that certain jobsite conditions may not
permit the boom and jib to be fully lowered to the ground.
When a qualified person at a jobsite determines that it is not
practical to lower the boom to the ground, we recommend
the following additional instructions be followed:
•
The equipment should be left in the smallest, most
stable, valid operational configuration that the job site
practically allows.
•
The equipment cannot be left running, with a load on the
hook, or in erection mode, or in wind conditions in
excess of allowed values.
•
The boom should be retracted as far as is practical, the
equipment configured in as stable a configuration as
possible (boom angle, superstructure orientation, jib
offset angle, etc.)
•
In high winds the boom and jibs should be lowered, or
secured. Changing weather conditions including but not
limited to: wind, ice accumulation, precipitation, flooding,
lightning, etc. should be considered when determining
the location and configuration of equipment when it is to
be left unattended.
SHUT-DOWN
Use the following steps when shutting down the equipment:
•
Fully retract and lower the boom.
•
Engage the swing lock pin and/or 360 degree swing
lock.
•
Place controls in neutral position.
•
Shut down the engine and remove the ignition key.
•
Chock the wheels, if not on outriggers.
•
Lock the operator’s cab (if applicable) and install vandal
guards, if used.
COLD WEATHER OPERATION
Cold weather operation requires additional caution on the
part of the operator.
Check operating procedures in this manual for cold weather
starting.
Don’t touch metal surfaces that could freeze you to them.
Clean the equipment of all ice and snow.
Allow ample time for hydraulic oil to warm up.
In freezing weather, park the equipment in an area where it
cannot become frozen to the ground. The drive line can be
damaged when attempting to free frozen equipment.
If applicable to your equipment, frequently check all air tanks
for water in freezing weather.
Never store flammable materials on the equipment.
National Crane recommends use of cold weather starting
aids that are provided on your equipment, use them. The use
of aerosol spray or other types of starting fluids is prohibited.
TEMPERATURE EFFECTS ON HOOK
BLOCKS
Hook Block Working Load Limit (WLL) is valid between 60°C
(140°F) and the low temperature limit given on the hook
block identification plate with normal lifting precautions.
L i ft i n g a b o v e 7 5 % o f t h e Wo r k i n g L o a d L i m i t , a t
temperatures between the service temperature given on the
identification plate and -40°C (-40°F), must be done at a slow
and steady rate to avoid stress spikes.
75% of the Working Load Limit must not be exceeded when
lifting in temperatures below -40°C (-40°F).
TEMPERATURE EFFECTS ON HYDRAULIC
CYLINDERS
Hydraulic oil expands when heated and contracts when
cooled. This is a natural phenomena that happens to all
liquids. The coefficient of expansion for API Group 1
hydraulic oil is approximately 0.00077 cubic centimeters per
cubic centimeter of volume for 1°C of temperature change
(0.00043 cubic inches per cubic inch of volume for 1°F of
temperature change).
Thermal contraction will allow a
cylinder to retract as the hydraulic fluid which is trapped
in the cylinder cools.
The change in the length of a cylinder is proportional to the
extended length of the cylinder and to the change in
temperature of the oil in the cylinder. For example, a cylinder
extended 7.6 m (25 ft) in which the oil cools 15.5°C (60°F)
WARNING
Tipping Hazard!
When parking the equipment and leaving it unattended
follow the instructions for the Controls and Operating
Procedures of this manual.
Failure to comply with these instructions may cause death
or serious injury
!
Fo
r
Reference
Only
Summary of Contents for National Crane 600E-2
Page 1: ...Operator Manual National Crane 600E 2 F o r R e f e r e n c e O n l y ...
Page 2: ...F o r R e f e r e n c e O n l y ...
Page 10: ...TOC 6 TABLE OF CONTENTS OPERATOR MANUAL 600E2 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Page 121: ...F o r R e f e r e n c e O n l y ...
Page 122: ...F o r R e f e r e n c e O n l y ...