APV PS 300 M1 D, Operating Instructions Manual

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2.2 Layout and function of the hydraulic fan (HG 300
M1)
Task
The hydraulic fan serves to produce compressed air for conveying the seed.
Layout of the fan
No. Designation Function
1 Fan sensor (pressure
monitor)
•
Preventing the seeding shaft from being
switched on as long as the fan is not switched on.
•
Preventing blockage of the seed drill due to
unintentional or early switching on of the seeding
shaft.
2 Pressure switch •
Reporting to the control box if the pressure is too
high (> 10 bar) in the tank line.
3 Hydraulic block
•
Limiting the oil quantity to the hydraulic motor.
4 Hydraulic motor •
Driving the fan.
5 Temperature measuring
strips •
Displaying the temperature of the hydraulic
motor.
Functioning of the sensors
The fan sensor monitors the air pressure on the pressure side of the fan.
The pressure switch monitors the pressure in the tank line of the hydraulic motor.
As soon as one of the sensors reports an error, the message "Fan error" appears on
the control box.
Functioning of the temperature measuring strip
The segments of the temperature measuring strip turn black when the respective
temperature range has been reached or exceeded.
Temperatures above 80° C cause destruction of the gaskets in the hydraulic motor.