Richiger EA 910, Operator'S Manual, Page: 36 / 76

The main rule when dealing with difficult, hard flowing grain is to
slow down the operation.
This means lessening the volume of incoming grain, which in turn means
slowing down the roller's revolutions per minute.
Let us present a practical example applying some of the parameters mentioned above by analyzing an
extraction of “difficult” grain in detail. Most of these indications are applicable grains in general, but grain that
flows with difficulty better exemplifies the precautions that should be taken. Once the operator becomes
knowledgeable about how the unloader handles different types of grain, using the correct approach
becomes a matter of routine. The intention is not to impose a rigid set of rules, but to provide general
guidelines that the operator can follow while he familiarizes himself with the machine.
If we consider a bag filled with grain that will not flow easily, in a situation such as depicted in Fig. 42, the
grain forms a compact mass that the sweep augers can only penetrate with difficulty. The augers will
move less quantity of grain per unit of time compared with free flowing material.
A) First adjust “C” so that sweeper distance to the ground is the minimum possible . This allows the
augers to tackle the mass of grain from a lower point, so that more grain can accumulate above them
and form a steeper angle “D”. This will cause the wall of grain to tumble down more readily and better
feed the augers. Remember that minimum is a relative term and can very well mean 4 or 6 inches or
more from the floor, to compensate for the unloader lurching into a hole or depression and causing the
augers to thump on the ground and rip the plastic.
Therefore, sweeper clearance “C” will tend to increase
with ground bumpiness.
B) When backing up the tractor into the bag, the unloader must never be rammed forcefully against
the grain as this can damage the sweeper augers or even bend the beam that supports them. The
unloader should be introduced with prudence in the bag and the augers should not penetrate the mass of
grain, but make light contact with it.
See warning (above in “D” section) about not initiating work with
augers surrounded by grain.
C) The PTO should always work within its normal 500/540 rpm range, not slower. Whatever grain
characteristics are, PTO revs are not reduced and augers work at a uniform speed.
29