Echo 74624 Owners Manual v.2 - Manual (Page 19)

17
OPERATION
4.6 hYdraulic feed conTrol
the chipper is equipped with a pre-programmed hydraulic
feed control located under the control panel. the controller
monitors chipper rotor RPM, controls the feed roller, and
provides routine maintenance alerts.
the controller can be turned off with the switch 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 feed conTrol funcTions are furTher
deTailed beloW:
the controller monitors the RPM of the chipper rotor. If
the RPM drops below the preset range, the feed roller
is stopped. When the RPM are back up to an accept-
able level, the feed roller is reengaged.
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, 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.
the controller will also flash service alerts when it is
started. Every 15 hours it will flash 5 times to indicate
the chipper blades should be sharpened. Every 100
hours it will flash 10 times to indicate the engine oil
should 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”.
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2.
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4.
4.7 feed roller boTTle Jack
The feed roller bottle jack is used to raise the feed roller if
chipping material becomes wedged in the feed roller. the
jack will raise the feed roller and remove the tension on
the chipped material.
alloW tHE MaCHINE to CoME to CoMPlEtE
StoP bEFoRE uSINg tHE bottlE JaCk.
Warning
To raise The feed roller:
turn the check valve clockwise to engage the pump
of the jack.
Once the jack is engaged, pump the handle to raise
the feed roller.
Secure the position with the safety pin.
once feed roller is cleared of materials, remove the
safety pin.
turn the check valve counterclockwise to disengage
the pump and lower the feed roller.
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2.
3.
4.
5.
The safety pin secures the bottle jack
Move throttle to slowest position.
Move chipper engagement to the engine start posi-
tion.
let machine idle for a few seconds.
turn key to off position.
allow machine to come to a complete stop.
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2.
3.
4.
5.
4.8 sToPPing