|
"What kind of header height options are available
on the new CR combines, and how do you use them?"
New Holland’s CR combine has been designed with several
built-in advanced header height features that are very easy
to operate.
The header height features, which include “Stubble Height”,
“Autofloat" and “Compensation” modes, can
be automatically selected by the combine’s electronic
system or manually selected by the operator. The combination
of automatic control, along with easy manual control by the
operator, results in improved head performance and reduced crop
loss in difficult field conditions.
The “Stubble Height” mode allows the head
to be repeatedly returned to the same operating height relative
to the combine chassis for a consistent operating height. This
mode would typically be used for higher cutting heights in areas
where there would not be much need to continually adjust the
height relative to the ground.
The “Autofloat” mode, which requires optional
sensors on some header models, allows for more precise positioning
of the header. This mode allows for automatic control of the
cutting height relative to the ground. It’s suitable for
very low cutting heights, such as required in pulse crops.
The “Compensation” mode is used when the head
needs to be positioned directly against the ground, such as
when harvesting downed or low-growing crops. The combine will
automatically position the head in this mode to maintain consistent
ground pressure, so that that head follows the ground contours
without bulldozing. (This mode should not be used on the 76C
pickup heads.)
|
Easy, automated control
The combine electronic system allows for very easy, automated
control of the header height systems. For example, if
the head makes contact with the ground while operating
in the “Autofloat” mode, the combine’s
electronic system will immediately switch to the "Compensation"
mode to prevent bulldozing, and then revert back to the
"Autofloat" mode when the obstruction is cleared.
You may also quickly switch between head height operating
modes by simply moving the switch from one position to
another.
|
|
Header height can be adjusted with the
controls on the right-hand armrest console.
|
|
How
to use automatic header height features
|
Header
Height Control Ranges
Header Height Control
switches
Header lift and lower can operate in two speeds. Depressing
the raise or lower switch to 1st detent (slow speed) and
continuing until 2nd detent is depressed will move the
header in high speed and disengage the automatic HHC mode.
When operating in an automatic mode, pressing the raise
or lower switch to 1st detent will change the header height
temporarily.
Pressing and releasing the resume “R” button
will activate an automatic mode when the threshing and
feeder are engaged, OR return the header to the preset
height if already operating in an automatic mode. Pressing
the resume “R” button twice will lift the header
above maximum stubble height.
When operating in an automatic mode, pressing the “R”
button for a minimum of two seconds will save the current
head position and verify with a beep.
Memory switch
The memory switch has three positions:
• 1 and 2 are memorized “Autofloat” or
“Stubble
Height” header heights
• 3 is a memorized “Compensation” setting
When working in an automatic header height mode the operator
can switch between positions at any time.
|
Reversing combine/header
automatic mode
When operating in an automatic mode, moving the MFH into
reverse will cause the header to raise above the maximum
stubble height position.
Raising header to end
of
cylinder stroke
Lift the header to its fully raised position. Release
header lift switch. Press the header lift switch to 2nd
detent position and hold for a minimum of one second.
Header width corrections
If the full header width is not being used during an
operation, an area counter correction has to be made.
One pulse to the left of the header width correction
switch reduces the header width by one meter (3.28 ft.)
Pulsing to the right increases the header width by one
meter (until full header width of selected header is reached.)
When working with a corn header, each pulse is one row.
When the header is raised above the maximum stubble height
level, the header width is reset to maximum.
|
For more information about CR combines, see your local New
Holland dealer, the combine specialist.
|
