Hopper System121Service Manual – Advance 7765 / Nilfisk CR1500Hopper System Wiring Diagram – Variable Dump MachineElectrical Circuit Description – Variable Dump MachineThe only electrical components associated with the hopper system are the Hopper Switch and the Hopper DoorSwitch. Both of these “whisker” switches must be closed in order to get positive voltage to the Shaker MotorSwitch, Dust Control Switch, Main Broom Switch and Side Broom Switch.Hopper Switch Hopper Door Switch(Held Closed by Hopper) (Held Closed by Door)7B-R1Shaker RelayDust Control Solenoid (1)8535 4615155715861Side BroomSwitch21Main BroomSwitch21Dust Control SwitchOption23 371Shaker Motor Switch2Main Broom Solenoid (2)38Side Broom Solenoid (5)3915B-77CB615 A137 2 C CN.O. N.O.1Battery 12 VDC+ -Bat. IgnitionSwitch
