Nilfisk-Advance Adgressor BR 1050CS, Service Manual

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FORM NO. 56043097 / Adgressor
™
/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 21
WHEEL DRIVE SYSTEM
Low Current A1 Speed Control Pin Key Detail
Pin # Wire Color Controller Pin Description & Function
1 Vio Throttle Pot R1 pot high input
2 Gra Throttle Pot R1 pot wiper input
3 Yel Throttle Pot R1 pot low input
4 Wht/Yel Speed limit pot input Tied to Pot High
5 – Open not used
6 – Open not used
7 Red/Blk
Program #1 Auxiliary Driver: Battery (-) output to the main controller (E1) to turn on (activate) all auto
scrub functions. Pin #7 will read approximately 36 volts when the foot-pedal is in Fwd or Rev.
8 Yel/Grn Main Contactor Output.
9 – Open not used
10 – Open not used
11 Brn/Wht Mode Select 1: Drive motor scrub speed input from the (E1)
12 – Open not used
13 – Open not used
14 Orn/Blu
Status Fault: Speed controller fault output to main control panel fault indicator light (accessory wand)
15 Orn KSI (key switch input): Battery (+) powers up controller logic circuits
16 Blu/Blk
Program #2 Auxiliary Driver: Battery (+) output to the main controller (E1) that controls the entire
auto reverse machine functions. How the program #2 functions, is when the foot-pedal is placed in
Rev, Pin #16’s voltage signal to E1 is lost (0 volts). This lost open circuit signal is what tells the E1
controller to turn on the back-up alarm (H1), turn off the solution solenoid valve (L1) and raise the
squeegee tool (changes polarity to the Lift motor M2).
WHEEL DRIVE TROUBLESHOOTING GUIDE
Problem 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 (F2) tripped
(reset 70A circuit breaker)
• Control Circuit Circuit Breaker (F3 & F4) tripped
(reset circuit breaker)
• Parking Brake (6) set (release parking brake)
• Emergency Stop Switch (13) tripped (reconnect battery to reset)
• Safety Switch (S2) in seat not closed (check seat switch)
• Defective Wheel Drive Motor (replace motor) *
• Defective Throttle Potentiometer (R1) (replace) *
• Wheel drive in one direction only, loss of either
forward or reverse.
• Test the Fwd & Rev (R1) wiring outputs (pins 1, 2 & 3) at the
speed control for an open. Repair wiring or replace the R1 pot.
• Controller can’t change electrical polarity to wheel motor
replace the (A1) speed control.
• Hourmeter/status display shows an error
03 fault code.
• Speed controller has sensed an operation error code fault.
(see the Status LED Fault Codes (Table 1) in the Electrical
System)
* = See Curtis Speed Control Troubleshooting Section.