42
- FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100
WHEEL DRIVE SYSTEM
Low Current controller A1 Pin Key Detail
Pin #
Wire Color
Controller Pin Description & Function
1
Open not used
2
Red/Wht
Fault 1: Controller fault output to operator control panel LED status display.
3
Open not used
4
Blu/Red
Main Contactor Driver: Battery (-) output to main contactor K1.
5
Open not used
6
Brn
Throttle Control: 0-5V electronic throttle motor speed input.
7
Open not used
8
Brn/Wht
Auxiliary Driver: Battery (-) output to main controller (A3) to turn on (activate) all auto scrub
functions.
9
Open not used
10
Open not used
11
Wht
Reverse: Electronic throttle battery (+) motor direction input.
12
Blk/Wht
Forward: Electronic throttle battery (+) motor direction input.
13
Open not used
14
Gry
Mode Select 1: Drive motor scrub speed battery (+) input from (K3) scrub brush solenoid
output.
15
Grn
Interlock: Seat switch (S3) input battery (+) to activate the main contactor driver pin 4 output to
the K1 contactor.
16
Grn/Wht
KSI (key switch input): Battery (+) output powers up controller logic circuits.
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
(F3)
tripped (reset circuit
breaker)
• 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 outputs
forward or reverse.
(pins 11& 12) at the speed control for an open. Repair wiring or
replace the A2 throttle.
• Controller can’t change electrical polarity to wheel motor
replace 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 Electrical
System)
* = See
Curtis Speed Control Troubleshooting
Section.
revised 12/02
