Manual: Curtis 3501

Regular maintenance is essential to ensure the longevity and performance of the Curtis 3501 controller. The manual recommends:

If the display is connected to a Curtis controller, it will show "Flash Codes" (e.g., 1-2 for Controller Overcurrent). No Display: curtis 3501 manual

Tip: Always cross-reference the diagram with the specific model number stamped on your unit, as manufacturers may have customized the wiring. Regular maintenance is essential to ensure the longevity

Older Curtis 3501 units are purely resistive. Newer revisions (often labeled 3501A or 3501B) may include a microswitch for pedal interlock or redundant potentiometer tracks for safety-critical applications (e.g., ASME A92.6 compliant aerial lifts). The manual will clearly delineate between these versions, and you must identify which one you have before proceeding. Older Curtis 3501 units are purely resistive

: Uses five front-panel buttons and a customizable LCD with bar graphs and flashing icons for visual warnings.