Echo 76628S User Manual

Page 19

PN 14295-00 R

OPERATION

4.4 hyD FeeD Control

The Bear Cat chipper is equipped with a pre-programmed hydraulic feed
control. the controller serves a variety of functions including monitoring chipper
rotor RPM, controlling the feed roller, and providing routine maintenance alerts.

The controller has an on/off feature located below the control panel. If the

controller becomes damaged, the chipper will still run with the controller shut

off, however all of the controller functions will be disabled. The feed roller will

have to be controlled with the control arm. The controller is located under
the control panel.

The controller functions are further detailed below:

1. The first function is that the controller operates is the feed roller. The

controller monitors the RPMs of the chipper rotor and if it drops below the

preset range the feed roller stops. When the RPMs are back up to an ac-

ceptable level the feed roller will reengage.

2. The controller also has a “try again” feature. The controller monitors the

hydraulic pressure of the feed roller. If it senses the level is too high (the

feed roller becomes obstructed) the controller will reverse the feed roller ,

removing the material trying to be chipped. The controller will then engage

the roller into the forward position and try to feed the material again. If this

cycle continues the obstruction will have to be removed manually, or mate-
rial to be chipped should be removed, trimmed, and/or repositioned.

to disable the try again feature disconnect the 2 pin connector going to the

pressure switch. It is located above the feed roller motor on the SA-1987
assembly.

3. The controller will also flash service alerts when it is started. Every 15

hours it will flash (error light blinks 5 times) for the chipper blades to be

sharpened. Every 100 hours it will flash (error light blinks 10 times) for the
engine oil to be changed.

NOTE: The RPM sensor on the rotor must be flashing or the controller won’t

work. Clearance between the sensor and the bolt must be between 1/32”

and 3/32”.

To reprogram the hydraulic feed control, software must be purchased. Contact
your distributor or the bear Cat factory for more information.