Sweep System, Side Broom241Service Manual – Advance 7765 / Nilfisk CR1500TroubleshootingGeneral TroubleshootingProblem Cause CorrectionSide Broom motornot running.Circuit breaker CB6 istripped.Reset the circuit breaker.No voltage to the SideBroom Solenoid (5).• Check for continuity through the hopper andhopper door “whisker” switches when the hopperis down and the hopper door is closed. Repair thewiring or replace the switch(es) as necessary.• Check the Side Broom Switch function and repair/replace as necessary.• Check the wiring from the Side Broom Switch tothe Side Broom Solenoid (5). There should be 0volts to the solenoid when the Side Broom Switchis off, and 12 VDC to the solenoid when the SideBroom Switch is on.Side Broom Solenoid (5) isnot operating.1. Check the coil resistance of the Side BroomSolenoid (5). If not 10.1 ohms ±10%, replace thecoil.2. If the coil resistance is within spec, check forbinding or a mechanical problem. Repair orreplace the valve as necessary.SpecificationsComponent SpecificationsSide Broom Solenoid (5)Valve Nominal Coil Resistance – 10.1 ohmsSide Broom Motor Displacement – 1.93 CIR
