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Note: Before pressing the diagnostics key, wait until model # screen appears, if the throttle is activated prior to
this screen appearing the controller will shut down.
• If there is a problem, the LED will flash a diagnostic code and the programmer will display a diagnostic message.
If you are conducting the checkout without a programmer, look up the LED diagnostic code in the Curtis
Controller Diagnostics section of this chapter and Status LED Fault Codes (Table 1).
• When the problem has been corrected, it may be necessary to cycle the key or seat switch to clear the fault code.
4. Move the drive paddle to operate the throttle. The motor should begin to turn in the selected direction. If it does
not, verify the wiring to the controller, and the motor. The motor should run proportionally faster with increasing
throttle. If not, refer to the Curtis Controller Diagnostics section of this chapter and Status LED Fault Codes
(Table 1).
5. If you are using a programmer, put it into the test mode by pressing the
of the forward, reverse and brake switch. Cycle each switch in turn, observing the programmer. Each input should
show the correct state on the programmer.
6. Take the vehicle off the blocks and drive it in an open area. It should have smooth acceleration and good top
speed.
Programming Vehicle Speed Changes
The maximum high-speed M1 (transport) and maximum low speed M2 (scrub) can be changed electronically using the
handheld programmer. To change a parameter using the programmer, press the
until the desired parameter is the top line of the display. Press the appropriate
Program Menu
or "down") until the desired number is reached. The parameter is now set at the desired value. All programming occurs
in real time. In other words, the parameters can be changed while the vehicle is in operation.
The upper and lower limits of parameters are set at the factory. Some parameters have dependencies on other
parameters. When the programmer is being used to adjust a parameter and a limit is reached, the display will stop
changing. To see why the display has stopped changing, press the
parameter, that information will be displayed. Changing the value of the related parameter may allow the original
parameter to be adjusted further. Otherwise, the display simply says
Use of the programmer is described more fully in the Speed Control Programming Options section of this manual.
Maintenance
There are no user-serviceable parts inside the Curtis PMC 1210 controller. No attempt should be made to open the
controller. Opening the controller may damage it and will void the warranty.
However, it is recommended that the controller exterior be cleaned periodically, and if a handheld programmer is
available, this periodic cleaning provides a good opportunity to check the controller's diagnostic history file.
Functional Overview of the Main Control Board
The primary function of the main control board A1 is to position the scrubbing brushes with respect to the floor surface
using a lift actuator motor to maintain the correct brush pressure and current draw of the brush motors. When the Scrub
ON switch (J) is depressed, this will lower the scrub deck to the operating position and by activating the drive paddle,
start the brush motors. The controller is continuously monitoring the current to the brush motors. When it senses a
current draw out of the desired range it automatically raises or lowers the brush deck by turning on the brush actuator
motor. This process is repeated until the brush motor is shut off. The controller also manages the other supportive
systems such as the solution on/off, and vacuum motors.
Note: See the Know Your Machine section for a complete explanation of the machine's operation.
70 - Form No. 56043161 - Clean Track
MORE INFO
Max Limit
L24
®
key. Scroll down to observe the status
TEST
key, and scroll down the
PROGRAM
CHANGE VALUE
key. If the limit is related to another
or
.
Min Limit
key ("up"
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Troubleshooting
