JLG boom lifts are equipped with various warning lights and indicators to ensure safe and efficient operation. Understanding the meaning of these lights is critical for operators to address issues promptly and maintain safety standards.

JLG Boom Lift Warning Lights

Common Warning Lights and Their Meanings

JLG boom lifts feature an indicator panel that displays warning lights for different operational statuses and potential malfunctions. Here are the most common warning lights:

  • Boom Control System Warning Light:

- Flashing Light with Alarm: Indicates the selected movement is not allowed. This may occur if the boom or jib is outside the allowable envelope or if there is a potential collision risk. To resolve, reverse the movement or select a different function.

- Important Note: Continuing operation in this condition could damage the machine or cause it to tip over.

  • Drive Orientation Light:

- Flashing Light: Signals that the drive controls may be opposite to the intended direction. To proceed:

1. Confirm the desired drive direction.

2. Press and release the Drive Orientation Override switch.

3. Operate within three seconds.

  • Platform Capacity Indicator:

- 500 lb (230 kg) Light On: The machine operates within a larger envelope.

- 1000 lb (450 kg) Light On: The machine operates within a smaller envelope, requiring the jib to remain centered.

- Both Lights Flashing: Indicates an overload condition or that the boom/jib is out of range. Reduce platform load as necessary.

  • Creep Speed Indicator:

- Continuous Light: Indicates that all functions are set to slow speed by operator selection.

- Flashing Light: Automatically activated when the boom approaches its operational limits.

  • Diagnostic Trouble Code (DTC) Indicator:

- A light signals a malfunction detected by the JLG control system, storing a diagnostic code in memory for troubleshooting.

Safety Alert Symbols

JLG uses specific colors and symbols to indicate levels of hazard severity:

  • Red Background (DANGER): Immediate hazard that will result in serious injury or death if not avoided.
  • Orange Background (WARNING): Potential hazard that could cause serious injury or death.
  • Yellow Background (CAUTION): Hazard that may cause minor injury or unsafe practices.

Additional Indicators

  • Fuel Level Indicator: Alerts when fuel is low, ensuring uninterrupted operation.
  • Hydraulic Oil Level Warning: Notifies operators of insufficient hydraulic fluid, which could affect boom lift functionality.
  • Spirit Level Indicator: Ensures proper leveling of the platform for stability.

Operator Actions for Warning Lights

When a warning light activates:

1. Stop Operations Immediately: Assess the situation based on the light's meaning.

2. Follow Manual Instructions: Consult the JLG operation manual for specific troubleshooting steps.

3. Perform Necessary Adjustments:

- Reduce platform load if capacity warnings activate.

- Reposition the boom if it's outside operational limits.

4. Contact Maintenance if Needed: For persistent warnings or malfunctions, seek professional servicing.

FAQs About JLG Boom Lift Warning Lights

    • What should I do if the Boom Control System Warning Light flashes?
      Stop operations immediately, reverse movements, or select a different function to resolve potential conflicts.
    • Why is the Drive Orientation Light flashing?
      This indicates reversed drive controls. Use the Drive Orientation Override switch to correct it.
    • What does it mean when both Platform Capacity lights flash?
      This signals an overload or out-of-envelope condition. Reduce platform weight and adjust boom position.
    • Can I bypass safety warnings?
      No, bypassing safety systems can lead to hazardous conditions and void warranties.

Understanding these warning lights ensures safe operation and prevents equipment damage, keeping both operators and surrounding personnel secure during use.