Nilfisk-Advance 56397010 Service Manual

FORM NO. 56043056 ConvertaMAX™ 20/26 / BA 550/650 - 21SCRUB BRUSH SYSTEMTROUBLESHOOTING GUIDE ELECTRICALPossible Symptoms1 Scrub brush motor(s) and solution solenoid valve do not work2 Scrub brush motor(s) do not work3 Scrub brush auto remove function does not workSYMPTOM ONE*Reference the Description of the Battery Low Voltage Cutout Feature in the Electrical System of this manual.revised 9/01YesNo NoYesCheck the batterymeter, is it doubleflashing?Recharge batterypack (the low voltagecutout is functioning*)Test the machine'sbattery pack voltageunder load. Is it lessthan 22 volts?Voltage test readingis above 22 volts.See the scrub brushsystem troubleshoot-ing Symptom Two,parts A & B.Part A: The machine's lowvoltage cutout isfunctioning(*). Check tosee that the correct voltagecutout threshold settinghas been selected (batterytype wet or gel).Scrub brushmotor(s) & solu-tion solenoidvalve do not work(see Figure 1)Part B: Also test each bat-tery for any possible deadcells. See Electrical Sys-tem Battery Maintenance& Battery Testing sectionsand follow instructions.