The information in this article applies to standard SC-100 vehicles with a Sevcon DC system – model numbers SC-100-24, SC-100-36 and SC-100-48. Note that vehicle customization may cause variation from the information in this article.
The Taylor-Dunn SC-100 Sevcon DC stockchaser is shown below.
1. Headlight Switch: Push the top of the headlight switch to turn the lights ON. Push the bottom of the switch to turn the lights OFF.
2. Strobe Light Switch: The strobe light switch is optional and only functional on vehicles fitted with a strobe light. If equipped, push the top of the switch to turn the strobe light ON. Push the bottom of the switch to turn the light OFF.
3. Direction Control Switch: This switch determines the direction of travel.
The switch has three positions:
- FORWARD: Push the top of the switch all the way in to travel forward.
- REVERSE: Push the bottom of the switch all the way in to travel in reverse.
- OFF: The center position between forward and reverse is the “direction” OFF. The OFF position does NOT turn the vehicle control system OFF. Use the start switch to turn the vehicle control system OFF. Refer to the start switch entry in this section for details regarding turning the vehicle control system OFF.
Note: The OFF position IS NOT neutral and does NOT disconnect the motor from the drive train.
4. Hi-Low Speed Switch: Push on top of the switch (turtle) for slow speed. Push on the bottom of the switch (rabbit) for normal speed.
5. Smart View Display: The Smart View Display (SVD) functions as a Battery Status Indicator (BSI), hour meter (HM), speed controller status monitor and an optional maintenance monitor feature.
BSI: A bar graph representing the current state of charge is located across the top of the display. When the batteries are fully charged, all segments of the bar graph will be on. As the batteries are used, segments will turn off from right to left.
When the batteries are discharged to 75 percent (25 percent battery remaining), the last three segments will flash, indicating that you are approaching the end of the battery cycle. At this time, the vehicle’s batteries should be charged as soon as possible.
At 90 percent (10 percent battery remaining), all segments will flash and the vehicle’s speed will be reduced. At this time, the vehicle should be removed from service for charging. Discharging beyond 90 percent will result in damage to the batteries that will shorten the battery life span. Note: The battery status gauge, as well as any faults indicating low battery voltage, will not reset until the batteries have successfully completed a charging cycle.
Hour Meter: Depending on the revision level of the controller, there are one or two hour meter functions: Key Hours and Run Time Hours.
Run Time Hours is represented by a motor symbol with a “T” in the center and indicates the accumulated length of time that the vehicle has been in operation. Time is accumulated when the FS-1 switch in the accelerator module is closed. The Run Time Hours will be displayed as indicated by the Run Time Hours Indicator located at the left of the display.
System Fault Monitor: The display will indicate a fault code whenever the control system logic detects a problem with the control system. A fault code is displayed whenever the Fault Code Indicator (the letter "F") is visible to the left of the numeric display. Refer to the fault code table in your Vehicle Operator and Service Manual or read Taylor-Dunn Fault Codes for a full description of the fault codes.
Maintenance Monitor: The Maintenance Monitor function is optional.
The Maintenance Monitor function can be turned on or off by your dealer. See your Taylor-Dunn Dealer for assistance with this procedure.
Operation: The SVD notifies the operator 10 hours (standard) before a scheduled maintenance is due. During this warning period, the meter will continue to alert the operator. This should allow enough time for the operator to schedule the maintenance that is due with minimal downtime.
If the scheduled maintenance is not performed before the warning period elapses, the vehicle’s maximum speed will be significantly reduced.
Warning Period: The warning starts when the Maintenance Indicator is ON and the Wrench icon is flashing. The Wrench icon will continue to flash until the warning time has expired.
Maintenance Due: Once the warning has expired and maintenance is due, the Wrench icon will stop flashing and remain ON. Additionally, the vehicle’s maximum speed will be significantly reduced until the maintenance is performed and the display is reset. The display should only be reset by an authorized technician.
Refer to the Illustrated parts section of your Vehicle Operator and Service Manual for information regarding tools required to reset the Smart View Display.
6. Start Switch: The start switch turns the vehicle electrical control system ON. This switch may or may not require a key to operate.
Rotate the switch clockwise to turn the vehicle system ON and counterclockwise to turn the vehicle system OFF.
The switch should be in the OFF position whenever the operator leaves the operator’s platform. This switch is designed to secure and disable the vehicle. The key can only be removed when the switch is in the OFF position.
Park Brake (Hand Operated): The parking brake is actuated with a hand lever located on the left side of the steering tower. To set the parking brake, press the rear of the treadle and pull the lever up until it locks. To release the park brake, press the rear of the treadle and push the park brake handle down.
Note: The front of the treadle will be very difficult to press when the park brake is applied.
Horn Switch: The horn switch is on the right side of the steering tower. Press the switch to sound the horn. Release it to turn it off.
Steering: The steering wheel and steering system are like an automobile. To turn right, turn the steering wheel clockwise. To turn left, turn the steering wheel counterclockwise.
Throttle/Brake Treadle and Operator Presence Switch
The treadle under the operator’s right foot controls the acceleration and braking of the vehicle. Using the ball of your right foot, press down on the front of the treadle to increase the speed of the vehicle. Using the heel of your right foot, press down on the rear of the treadle to apply the brake. Releasing the treadle will return it to the off position.
Operator Presence Switch: A switch located under the left floor plate disables the vehicle if the operator is not positioned properly. The operator's left foot must be positioned on the floor plate to operate the vehicle.
Power Cut Switch
This switch is optional. Pushing on the power cut switch disconnects main power from the vehicle control system and will stop the vehicle from operation. Pull up on the knob to reconnect the power.
The power cut switch should only be activated in an emergency, such as when the vehicle is not operating as expected or if odors such as a burning scent are coming from the vehicle.
DO NOT use the switch when only parking the vehicle.
If the vehicle is equipped with an optional automatic parking brake, then the brake will immediately be applied, abruptly stopping the vehicle. Operating the switch while in motion will result in accelerated wear and premature failure of the parking brake.