Nilfisk-Advance Hydro-Retriever 3800 Service Manual

Also see for BR 1100: Instructions for use

Contents

42 - FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100WHEEL DRIVE SYSTEMLow Current controller A1 Pin Key DetailPin # Wire Color Controller Pin Description & Function1 Open not used2 Red/Wht Fault 1: Controller fault output to operator control panel LED status display.3 Open not used4 Blu/Red Main Contactor Driver: Battery (-) output to main contactor K1.5 Open not used6 Brn Throttle Control: 0-5V electronic throttle motor speed input.7 Open not used8 Brn/Wht Auxiliary Driver: Battery (-) output to main controller (A3) to turn on (activate) all auto scrubfunctions.9 Open not used10 Open not used11 Wht Reverse: Electronic throttle battery (+) motor direction input.12 Blk/Wht Forward: Electronic throttle battery (+) motor direction input.13 Open not used14 Gry Mode Select 1: Drive motor scrub speed battery (+) input from (K3) scrub brush solenoidoutput.15 Grn Interlock: Seat switch (S3) input battery (+) to activate the main contactor driver pin 4 output tothe K1 contactor.16 Grn/Wht KSI (key switch input): Battery (+) output powers up controller logic circuits.WHEEL DRIVE TROUBLESHOOTING GUIDEProblem Possible Cause• Wheel drive motor will not run in forward and reverse. • Batteries need charging (low battery voltage, recharge batteries)• Wheel Drive Motor Circuit Breaker (F3) tripped (reset circuitbreaker)• Control Circuit Circuit Breaker (F2) tripped (reset circuit breaker)• Parking Brake (6) set (release parking brake)• Emergency Stop Switch (12) tripped (pull red knob to reset)• Safety Switch (S3) in seat not closed (check seat switch)• Defective Charger Interlock Switch (S2) (adjust/replace switch)• Defective Wheel Drive Motor (replace motor) *• Defective Electronic Throttle (A2) (replace electronic throttle) *• Defective Main Contactor (K1) (replace main contactor) *• Wheel drive in one direction only, loss of either • Test the Fwd & Rev (A2) Electronic Throttle’s wiring outputsforward or reverse. (pins 11& 12) at the speed control for an open. Repair wiring orreplace the A2 throttle.• Controller can’t change electrical polarity to wheel motorreplace the (A1) speed control.• Hourmeter/status display shows an error • Speed controller has sensed an operation error code fault.03 fault code. (see the Status LED Fault Codes (Table 1) in the ElectricalSystem)* = See Curtis Speed Control Troubleshooting Section.revised 12/02