Specifications

Curtis PMC 1223/33, 1225/35, 1227/37 Manual

THRTL AUTOCAL [default access: OEM]

The throttle autocalibration parameter provides a means of easily and reliably

centering wigwag throttle pots. An audible tone and the Status LED assist the

assembler in accurately centering the pot in the throttle assembly. The controller

inhibits driving while in autocalibration mode, enabling the technician to adjust

the throttle potentiometer safely.

Throttle centering is accomplished as follows:

1. Jack the vehicle drive wheels off the ground or disconnect the

motor leads.

2. Completely assemble the throttle mechanism but do not tighten

the clamping mechanism that secures the potentiometer shaft to

the throttle lever.

3. Turn on the controller and plug in the 1307 handheld program-

mer.

4. Select the Program mode and scroll down to the throttle auto-

calibration parameter.

5. Turn the throttle autocalibration to On. At this point, the horn will

probably sound and the LED will go off, indicating that the throttle

pot is out of adjustment. If the horn does not sound and the LED

remains on, the pot is already centered and no further adjustment

is necessary.

6. With the throttle lever at the neutral position, adjust the potenti-

ometer until the horn turns off and the LED goes on. The pot is

now adjusted to the proper value for neutral.

7. Tighten the clamping mechanism which secures the throttle lever

to the potentiometer shaft. Depress and release the throttle to verify

the mechanical return to neutral.

8. Turn the throttle autocalibration parameter to Off. The vehicle

will not drive if the throttle autocalibration parameter is left on.

3 — PROGRAMMABLE PARAMETERS