R2900 Load Haul Dump Fire Suppression System (Foam) - If Equipped Caterpillar

This section contains basic operating procedures for the foam fire suppression system. The foam fire suppression system may be activated automatically or manually. The foam fire suppression system may also include an engine shutdown control. For more complete information, refer to the fire suppression system manufacturer's information.

Fire Suppression Control (Manual)

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Manual actuation of the fire suppression system will result in immediate system discharge which may obscure vision and affect the operator's ability to control the machine. This may result in personal injury or death. Make certain the machine is stopped safely before manually actuating the system. Manual actuation will bypass all auxiliary shutdown and alarm functions.

Illustration 1	g00944802

Illustration 2	g00944803

There are two manual actuators on the machine.

Manual actuator (1) is located in the operator's station of the machine. Manual actuator (3) is located on the right side of the radiator guard.

Activate the fire suppression system by turning handle (2) or (4) counterclockwise.

Fire Suppression Control (Engine Shutdown)

Illustration 3	g00944818

The fire suppression control consists of LED indicator (1), engine shutdown switch (2), system override switch (3) and an alarm.

The function of the fire suppression control is to cause a delayed engine shut down when the fire suppression system is activated.

Bottle Pressure Correct/Fire System Activated Indicator (1) - Indicates that the fire suppression system bottle pressure is correct or the fire suppression system has been activated.

Under normal operating conditions, indicator (1) will be GREEN. This indicates that the fire suppression system bottle charge pressure is correct and the fire suppression system is ready for use.

When indicator (1) comes on RED, an alarm will sound. This indicates that the fire suppression system has been activated and the engine will shut down after a six second delay.

Engine Shutdown Switch (2) - This switch allows the engine to be shut down immediately in an emergency. Press engine shutdown switch (2) down to stop the engine.

Note: During normal machine operation (fire suppression system not activated), the fire suppression control causes a six second delayed engine shutdown after the engine start switch is turned to the OFF position. To override the fire suppression control and shut down the engine, turn the engine start switch to the OFF position and press engine shutdown switch (2) down.

System Reset Switch (3) - This switch is used to override the fire suppression control so that the machine can be moved after discharge of the fire suppression system and loss of system pressure.

Note: The override function should only be used in an extreme emergency. Restarting the machine before the fire suppression system has been recharged can reignite the fire that had been previously suppressed, without a means of extinguishment.

Note: Certain machines may be equipped with an idle timer control (engine shutdown) in addition to the fire suppression control.

Reference: For more information on the operation of the idle timer control, refer to the Operation and Maintenance Manual, "Idle Timer Control (Engine Shutdown)" for the machine that is being serviced.

In Case of Fire

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In case of fire, evacuate the area to reduce the risk of injury from flames, heat, hazardous vapors, explosions, or any other hazards that may be created.

The following procedure should be read and performed in accordance with the current mine site practices.

In case of fire perform the following procedure:

1. When a fire is detected or when the system alarm (if equipped) sounds, bring the machine to a safe controlled stop.

2. Stop the engine.

3. Engage the parking brake.

4. If not automatically activated, manually activate the fire suppression system by turning the handle on the manual fire suppression control counterclockwise.

5. Evacuate the machine.

6. If possible, turn the battery disconnect switch to the OFF position.

7. Notify the appropriate mine personnel.

8. Stand by (at a safe distance) with a portable fire extinguisher.

Note: Stand by with a portable fire extinguisher to guard against any fire that may reignite after the fire suppression system has discharged. Remain alert until the possibility of reignition is past.