Brandt GRAIN VAC 5000, Operator And Parts Manual

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The manual settings in the Air Throttle and the use
of the Adjustable Vent Slide, located in the top of
the upper body, should be used when you are moving
lighter products such as light oats or barley,
sunflowers or grasses, to reduce the amount of
product being discharged through the exhaust tube.
The product carrying capacity of the airstream within
the intake hoses is directly related to the velocity of
the air within the suction hose(s). Therefore, in many
cases with light bulky products, the product carrying
capacity of the Grain Vac is too great to allow
separation of the product from the airstream in the
Grain Vac body. By manually closing the Air Throttle
and opening the intake vent in the upper body, we
decrease the volume of air travelling through the
suction hose and therefore the velocity, thus allowing
separation of the grain particles from the airstream.
Although it is difficult to give an exact specification
of throttle positioning and intake vent opening for
each product because of differences in bushel weight,
the following chart can be used as a guide. In any
case, it is important to ensure that the air inlet at the
suction hose end is not choked off excessively.
F
IG
. 12 A
IR
T
HROTTLE
P
INNED
C
LOSED
In all cases, set the Air Throttle to the position shown
below and use the Vent Slide to do the fine
adjustment.
Air Throttle Position Product
A Light Oats or Barley
B Sunflowers
C Grasses
If the closing of the throttle and the intake vent
opening is still insufficient to eliminate product
discharge through the exhaust, try one or all of the
following:
A - Decrease the PTO speed.
B - Increase the length of the intake hose.
C - Allow more air at the intake end of the hose.
The manual positioning of the Air Throttle and
opening of the intake vent should only be used if
you are experiencing product discharge from the
exhaust. If the body is full, you must open the vent
fully and remove the intake hose from the grain to
allow the Grain Vac to clean itself out before
resuming normal operation.
The Air Throttle can also be pinned in the fully open
position. This position should only be used when all
the hoses are connected to the vac and you are
moving heavy product. This will give you the highest
capacity available, but will require more horsepower
from the tractor.
This position must not be used
when vaccing under normal conditions. Because
of the large amount of air flow the fan can produce,
excessive strain can be put onto the slip clutch in the
PTO shaft causing it to slip and damage the clutch
pack.
F
IG
. 13 A
DJUSTABLE
V
ENT
S
LIDE