ANTTI Vacboost M13, Installation And Operating Instructions Manual

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Antti-Teollisuus Oy 59 408111 03-2019
Vacboost M13
Measuring the amounts of air
The amounts of air can only be measured under test conditions. Relatively, the amount of air can, however, be
measured by measuring the pressure of air inside the dryer's inlet air channel. The pressure of air is indicated by
the height difference of the water surfaces.
Example! 15 mm below zero and 15 mm above zero makes together 30 mm of water column (counter-pressure)
The more the air flow is throttled, the lower the counter-pressure.
The desired value for grain is 20–40 mm and for turnip rape 30 mm.
Large variations in results are due to changed measuring locations, and the properties of the pipelines. Therefore,
the counter-pressure meter is better suited to measuring variations within one dryer unit rather than comparing
different dryers.
OTHER FACTORS OF ECONOMICAL DRYING
Avoid drying too much (for example: for drying from 14 % to 12 %, you need the same amount of energy than for
drying from 19 % to 14 %).
Avoid drying partial batches, because then the output will also be partial and the output will be reduced.
The settings of the oil burner affect the thermal efficiency directly. The adjustments of the burning air must be cor -
rect. If you change nozzles or change the oil pressure, readjust the burning air flow.
Assign a specialised oil burner workshop for maintenance of the burner at intervals of 2–3 years – also the nozzles
shall be changed. This way you may not need to maintain the burner yourself at all.
The operator must, however, keep the heater room and the protective net for the suction air opening clean of dust
and debris.
Good maintenance of the machinery improves the economy of the operation.
After each annual sweeping, ensure after closing the sweeping door that the seal of the door is absolutely tight.
Avoid drying in the night time, At night the drying always requires more purchased energy than in the daytime.
Make sure that the elevator lifts the grain at full power during the filling and the emptying.
Keep the output setting of the pre-cleaner's blower as high as possible keeping in mind the limit for the
variety in question.