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MAINTENANCE CHECKLIST
OPERATOR MANUAL 600E2
6-6
PUBLISHED 04-26-2019 CONTROL # 113-09
3.
Lay the jack on its side and drain the oil into a suitable
drain pan. The oil will run slowly because air must enter
as oil drains out.
4.
Keep dirt and foreign matter out of the system.
5.
Replace with proper oil as described above.
Lubrication
Add proper lubrication oil to all pivoting sections every three
months.
Rust Prevention
Check ram every three months for any sign of rust or
corrosion. Clean as needed and wipe with an oil saturated
cloth.
NOTE:
When not in use, always leave the saddle and ram
all the way down.
OIL COOLER SERVICE & MAINTENANCE
(OPTIONAL)
The heat exchanger must be kept clean to allow for efficient
operation of the cooler system. Frequent washing of the
heat exchanger core will eliminate oil film, road dirt and other
foreign object buildup on the heat exchanger fins which
reduces cooling efficiency.
Frequent inspection and tightening of hose clamp line
connections will eliminate the possibility of end connection
failure due to back pressure from cold startup.
If cooler system fails to provide adequate performance,
reduced air or oil flow through the heat exchanger is the
probable cause. The cooling fan should be inspected for
proper operation (see Specifications). Any obstructions to air
flow should be corrected (cooler too close to other truck
components, foreign matter in heat exchanger fins, etc.) All
hydraulic lines should be periodically checked for
obstructions, hose kinks or other flow restrictions.
EXTENSION LOAD LIMITING DEVICE
This system is designed to provide load limiting capability for
extensions. This is accomplished with the use of an angle
sensor, a load cell force sensor, a microprocessor, and
enough memory to store 30 table sets containing the
maximum force for a given extension head angle and given
crane configuration. The system will compare the measured
force to the table and will provide lockout when the table
value is exceeded. The system should be checked for proper
operation during initial crane start up and quarterly
thereafter.
Single Character Display
The electronics box of the extension load limiting device is
equipped with a single character display that provides the
following information:
•
startup codes
•
table number selected
•
current load reading
•
current limit value
•
error codes
•
current angle reading.
On power-up, the unit first displays startup codes. The
startup code can consist of up to four digits, but will usually
be only the single digit "2". Each number will be displayed for
only 0.5 sec. The codes are:
1.
The eprom is being initialized. This should only happen
the first time the unit is powered on after it is
programmed.
2.
The unit is checking for the combination of numbers that
erase the previously stored table number in the
EEPROM. This will be displayed when the unit is
powered on and the switches are not set with this
combination of numbers.
3.
This is displayed only before a new table number is
stored in EEPROM. The 2 will be displayed first.
4.
The switches are set up with the combination of
numbers to erase the table number. On the next power
on, the table number will be read in and stored to
EEPROM.
After the startup codes, the table number will be displayed in
the form of 3 digits. The first digit will always be a zero. The
digits will each be displayed for about 1 second.
After the table number is displayed, the display will begin to
sequence through the following information. After reaching
the end of the sequence, the display will start again at the
current load reading.
•
Current load reading (lbs.): 4 digits, decimal point ON
•
Current limit value (lbs.): 4 digits, decimal point flashing
•
Error codes (only if an error exists):
-
4 digits, first and last digits are blanks.
-
0-invalid table number,
-
1-load readings higher than the limit.
•
Current angle reading: 4 digits, decimal point OFF,
displays in tenths of degrees.
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 ...