Control System; Functional Description; Component Locations - Clarke CA90 32T Service Manual

Service Manual – CA90 32T

Control System

12
Control System

Functional Description

The CLARKE CA90 32T has (1) controller for the traction drive, and switches and solenoids for the other systems.
The traction drive controller is a Curtis model 1228-3430. The inputs for the Curtis Speed Control are B+, B - ,
Keyswitch enable, Forward/Reverse switch, and the Speed Control Potentiometer. When all of the inputs to the
Curtis Speed Control Board are within the proper range, the machine will move.
All of the controls are located on or in the machine control housing within easy reach of the operator.

Component Locations

• Curtis Controller
• System Switches
• Trigger switch
• Forward/Reverse Switch
• Speed control knob
• Solution Control knob
• Solenoids
• Circuit breakers (Located on the lower panel of the control housing)
Curtis Speed
Controller
Mounted in
control housing