Buhler 2425 - Manual (Page 132)

SECTION 2 - OPERATION
2-74
Hydraulic System Filter Bypass
The Electronic Instrument Control System will
notify the operator that the hydraulic system filter
is in the bypass condition and oil entering the
hydraulic system is not passing through the filter
element. The hydraulic system will still receive
oil, but the oil will not be filtered and may contain
contaminants. See “Hydraulic System
Troubleshooting” in Section 4 for possible
causes of filter bypass. Failure to correct the filter
bypass condition may cause damage to the
hydraulic system components. The following
description details the reaction of the electronic
monitor and audible alarm in the event of
hydraulic system filter bypass:
With the engine running and the hydraulic
system filter in the bypass condition, the
hydraulic system filter warning light, 1, on the
warning light bar will illuminate. There will be a
six-second delay before the audible alarm
sounds a solid tone for four seconds. The upper
portion of the monitor will flash “CHK” “LMPS,”
indicating that the operator should look at the
light bar to determine the function that is causing
the alarm to sound, i.e., hydraulic system filter
bypass. The lower portion of the monitor will
continue to display whatever is selected on the
rotary select switch.
The operator can cancel the audible alarm and
the “CHK” “LMPS” display on the upper portion of
the monitor by pressing the acknowledge/reset
button once. The hydraulic system filter bypass
light on the warning light bar will stay lit until the
bypass condition is corrected. The audible alarm
and “CHK” “LMPS” display will not return until the
ignition switch is turned to the “OFF” position and
the tractor is restarted.
Hydraulic system filter bypass is considered a
non-critical alarm function and will not cause the
electronic monitor to go into the “STOP” mode or
cause the automatic shutdown to activate.
ATTENTION: It is important that the operator
shut the tractor off and find out the cause of the
hydraulic system filter bypass light indication.
Take corrective action immediately to prevent
damage to the hydraulic system components.
Figure 2-107
1