ARAG Electriccontrol unit for crop-spraing application 871 User Manual
Page 3
3
CONTENTS
• Legend of symbols ..........................................................................................................2
1 Product description .........................................................................................................4
1.1
Intended use ............................................................................................................4
2 Product functionality .......................................................................................................5
2.1
Components of electric control units ........................................................................5
2.1.1 Electric control units with main control valve SERIES 871 ....................................5
2.1.2 Electric control units with main control valve SERIES 864 ....................................6
2.2
Components function ...............................................................................................7
3 Installation ........................................................................................................................8
3.1
Safety regulations ....................................................................................................8
3.2
Installing and connecting the unit ............................................................................8
3.3
Connecting up the system ..................................................................................... 10
3.4
Electrical connections ............................................................................................ 11
3.5
Connection to control devices ................................................................................ 12
4 Setting before use ..........................................................................................................13
4.1
Electric unit adjustments before operation ............................................................. 14
4.2
Adjustment of maximum operating pressure (only applicable for units
with proportional valve) .......................................................................................... 16
5 Use ..................................................................................................................................17
5.1
Calibration of operating pressure ........................................................................... 17
5.1.1 Constant pressure units .......................................................................................18
5.1.2 Units with proportional valve ...............................................................................18
5.2
Calibrating the metered by-passes ........................................................................ 19
5.2.1 Metered by-pass calibration tables .....................................................................21
6 Maintenance / Diagnostics / Repairs ............................................................................22
6.1
Flushing the liquid passages of the electric control units.......................................22
6.2
Cleaning the filters .................................................................................................23
6.2.1 Manual cleaning ..................................................................................................23
6.2.2 Automatic cleaning of self-cleaning filters ...........................................................24
6.3 Troubleshooting .....................................................................................................27
7 Technical data ................................................................................................................29
7.1
Correspondence between valve parts and maximum valve pressure ....................29
8 End of life disposal ........................................................................................................30
9 Guarantee terms.............................................................................................................30