KEENAN
MechFiber400 Operator’s Manual
Revision G02 28
th
Sept 2020
13
keys together until “end” appears on the screen, then release the buttons. If the power is
supplied through a 7-pin lights connection, the tractor lights will need to be switched on to
provide power to the weigh box. If you stand on the ladder at the rear of the machine, you
can check the reading on the weigh box against your known weight; this may require
assistance.
6.
With the tractor running, check that the VFC-door opens fully and closes completely.
Similarly, check the movement of the feed-out tray. Engage the PTO and check the turning
of the paddles. The initial turning of the paddle rubbers against the side of the KEENAN
MechFiber diet feeder will generate noise, but this will decrease as the paddle rubbers
become more pliable.
As a general rule, the engine speed during loading should be as low as possible without the
risk of stalling the tractor. See the loading and mixing procedure guidelines.
Note:
A: The design life of hydraulic hoses is subject to the level of wear and tear/usage and also
factors like harsh climate. It is recommended that they be reviewed periodically (yearly) and
typically replaced after ten years of operation if necessary.
B: The maximum oil pressure of the hydraulic system is 3000 psi.
C: If there is a
valve chest
fit to the MechFiber machine, it is very important to connect the
valve chest hydraulic feed and return pipes correctly. The return pipe is not designed to handle
the hydraulic pressure normally experienced in the valve chest feed pipe, so seals and/or the
valve chest itself may be damaged if oil flows in the wrong direction through the chest.
Typically, the hydraulic return pipe on the valve chest is fit with a one-way flow valve to prevent
oil from being fed to the valve chest in the wrong direction. This is identifiable as a steel
connection on the end of the pipe with an arrow stamped on its side to indicate the direction of
the oil flow through it. Oil flows into the valve chest through holes marked P (pressure) and out
through holes marked T (tank). See Figure 4 below.
(The valve chest is set up for open-centre hydraulics. If the tractor has an alternative hydraulic
system [other than open-centre], contact the tractor agent. To alter closed-centre hydraulics,
there is a plug available on request from KEENAN Service that can be fitted to the spool valve
block.)
Figure 4: Valve chest
P
T
