Richiger EA 910, Operator'S Manual

Page: 21 / 76

3) To determine proper speed, wait until grain
reaches a level that is approximately 10 centimeters (4
inches) below the roller's level and keep it there by
adjusting the knob in either direction.
(See “General
indications for efficient operation” on page 22 for further
information on regulating grain height within bag).
This can be verified visually by observing the mass of
grain through the cutter blade opening at the top of the
bag. If the gap between grain level and pick-up roller
grows too close,
and grain is being pulled up into the
roller with the bag folds, then too much material is
accumulating inside the bag faster than it can be
discharged.
Operating speed must be lowered by turning knob
clockwise . If the gap between roller and grain
increases, more grain must be supplied by turning the
knob
anti-clockwise and speeding up the roller. The
knob is turned very gradually, avoiding any abrupt
changes of grain flow.
The unloader should now be delivering a steady
stream of grain to the receiving truck or trailer
(
Fig.
25
).
The truck will have to move every so often to stay
alongside the retreating bag. Fig.25
CAUTION:
It is critical that grain not be allowed to collect higher up in the bag than level recommended (see “General
indications for efficient operation”, page 27) because it can be drawn up with the bag, rolled in with the plastic sheet
and form large masses of bulging grain that continue to get bigger. If that happens, operation is stopped, roller is
disengaged (see “Detaching bag from roller, page 20), tractor is made to advance a few meters so that enough plastic
is unrolled to be cut off with a knife, all the used plastic is discarded from the roller and operation is recommenced.
Although it is ideal that no grain be picked up by the roller, small bulges here and there can be put up with as long as
roller speed is decreased and grain ceases to be pulled in.
14