ARAG Electriccontrol unit for crop-spraing application 871 - Manual (Page 5)

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2 PRODUCT FUNCTIONALITY
2.1 Components of electric control units
2.1.1 Electric control units with main control valve SERIES 871
Fig. 1
1 Gearmotor of main control valve
2 Maximum pressure valve
3 Proportional electric valve
4 Filter
5 Boom section electric valves
6 Metered by-passes
7 Pressure gauge adapter or pressure sensor connection
IN Intake of liquid for spraying
OUT A Drain for maximum pressure valve
OUT B Drain for metered by-pass
OUT C Drain for proportional valve
OUT D Drain for self-cleaning filter
U1÷U5 Boom section delivery
LThe main control valve series 871 is an assembly made up of main control valve
gearmotor (1) and maximum pressure valve (2)