Echo 72928 Owners Manual v.2 - Manual (Page 17)

14
Operation of the Electronic Feed
Control
When the speed switch senses that the chipper rotor
has slowed to a certain preset level, the speed switch
will open the crossover valve and allow the oil to
return to the tank.
Operate the chipper as instructed in the chipper
manual. The feed control will start and stop the feed
roller automatically. To maximize performance, there
are two adjustments on the Speed Switch to tailor the
unit to your specific engine and needs..
1.The Setpoint screw is used to determine the engine
RPM that the switch opens and halts the feed.
The setpoint screw is used to adjust the RPM that
the feed roller turns off. Turning the screw clock-
wise will increase the speed setting.(This is a very
fine adjustment. it is not recommended to go over
1/2 a turn each adjustment.)
It is recommended to have this set so that the roller
shuts off when the engine speed is slightly higher than
the maximum torque speed of the engine.
2. The Hysteresis is used to determine the amount of
recovery time the engine is allowed. This is directly
related to the Setpoint setting.
Turning the screw clockwise will increase the
speed between when the roller stops and when it
turns on.
It is recommended to have this set at the minimum by
turning the screw counter clockwise approximately 10
turns.(It you don't seem to be getting any adjustment,
you have turned adjustment to end of its range.)
Figure 1
and attach the ground wires to the frame. Route positive
to engine. (See wiring diagram)(Ref #4)
14. Mount speed switch and route wires according to
wiring diagram.
15. Attach cover over speed switch with two self
tapping screws.
16. Replace the belt guard.
17. Attach the chipper to the tow vehicle.
18. Operate the chipper per manual instructions.
NOTE: When approaching the end of a log, it might be necessary
to manually override the automatic feed sensor. Be sure to pay
attention to the engine speed and feeding of the material.
S E C T I O N 2