Buhler 2180 - Manual (Page 126)

SECTION 2 - OPERATION
2-80
To turn off the remote electro-hydraulics, depress the
engagement switch knob as shown.
IMPORTANT: The remote valve electro-hydraulic
engagement switch is provided as an isolator stop
switch. It can be used to immediately stop operation
of the rear remote hydraulics by quickly depressing
the knob. The stop switch only controls the remote
valves and has no effect on the three point hitch link
operation, thereby isolating operation of the rear
remote hydraulics from the three point hitch link
operation.
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MANUAL-PROGRAMABLE OPERATION
SWITCHES
Rocker switch, 1, is used to select either the manual
or programmed operation for each of the remote
control switches.
Manual Operation
Manual operation is provided primarily for the
operation of continuous flow applications, such as
hydraulic motors. To operate the remote electro-hy-
dualic valves in manual mode, depress the top of
rocker switch, 1, as shown. In the manual mode, the
control switch, 2, can be operated in the four
positions, neutral, extend, retract and float. When the
control switch is left in either the extend, retract or
float positions the control switch WILL NOT
automatically return to the neutral position and shut
the flow of oil off to the rear remotes regardless if the
system reaches maximum pressure. The control
switch must MANUALLY be returned to neutral.
There is no automatic return to neutral. This allows
for efficient operation of motors without nuisance
shut downs when the remote valve in advertantly
returns to neutral. When operating hydraulic motors
it is important to always use the RETRACT position
to activate the motor and the FLOAT position to stop
the motor. Using the float position to stop the motor
allows the motor to come to a gradual stop
preventing any damage to the motor itself.
IMPORTANT: Never use the neutral position from
the extend or retract position to stop a hydraulic
motor. Sudden hydraulic lock up of the system can
cause extensive damage to the motor.
IMPORTANT: Do not operate the control switches in
the manual mode when operating remote cylinders.
When the cylinder has reached the end of its stroke
the control switch will not return to neutral and the
hydraulic system relief valve will be activated. This
will overheat the oil and may lead to failure of the
hydraulic and driveline components.
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