Manitowoc National Crane 500E2 User Manual

500E2 OPERATOR MANUAL MAINTENANCE CHECKLIST
6
National Crane Published 07-26-2019 Control # 111-06 6-7
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 AND 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.
JIB LOAD LIMITING DEVICE
This system is designed to provide load limiting capability for
jibs. 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 jib 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 jib 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 (lb): 4 digits, decimal point ON
• Current limit value (lb): 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.

Manitowoc National Crane 500E2 Specifications

General

Brand	Manitowoc
Model	National Crane 500E2
Category	Construction Equipment
Language	English