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Frequently Asked Questions

Is it safe to use?

The Pulsefire Long Range Torch system is a liquid fuel flame stream system that is built to be as safe as possible for a device of its nature. Our team developed every aspect with user safety in mind. For example:

  • The nozzle design helps keep fuel and flames at the nozzle instead of dripping back toward the user.
  • The ignition system is on-demand; no need for an open flame pilot torch or pressurized butane.
  • The fuel storage tank(s) are non-pressurized, like any typical gasoline powered outdoor tool.
  • A check valve between the pump and nozzle prevents fuel flow between activations.
  • A low voltage cutoff circuit prevents over-discharging the battery used to power the unit.

Of course, flame producing equipment is inherently hazardous. Good judgment is key to maintaining personal safety. When the battery is connected, and the power switch is on, pressing the trigger switch will generate fuel and flames about 8 meters away if there is any fuel in the reservoir. We recommend to always transport the device with the battery disconnected to prevent accidental activation.

Can the flames 'blow back' internally?

No. There is not enough air inside the plumbing to facilitate a flame front that is in any way harmful. The convoluted and tight-tolerance geometry inside the fuel pump combined with an ultrafine metal screen mesh provide built-in flame arresting properties. The tiny nozzle orifice and all-metal check valve also contribute to this resistance. There will always be some level of liquid fuel trapped inside the plumbing even when apparently “running on fumes” due to the components and paths involved.

Can napalm be used?

No. We use a tight tolerance high speed fuel pump with a fine screen mesh filter that is designed for low viscosity, non-conductive fuels.

Firefighters and forestry users will typically use up to 50% diesel fuel in order to slow the burn while also increasing the flame temperature. It’s a bit more oily and clings to things better.

Product Manuals

Pulsefire LRT
Includes backpack reservoir instructions.

This troubleshooting information is provided to help you determine the cause of any problems you might experience. If you need guidance on any repair, contact us and we’d be glad to help.

COMMON CONCERNS

The spark/arc is occurring, but the fuel is not being ignited consistently.

If the spark/arc is occurring and the fuel is not being ignited, it is due to one or more of the following:

1. The outside temperature is too cold, causing minimal fuel vapor to be present. Reliable ignition is only guaranteed down to -17°C with gasoline.

2. The fuel is not flammable. For example, trying to use 100% diesel/kerosene, which is not typically flammable unless it is in an environment that is at least 52 °C to sustain combustion.

3. The electrodes are not positioned optimally. This becomes more important as the temperature drops or it’s breezy, as that fuel vapor needs to be in the path of the spark. See the Electrode Alignment diagram.

For more a more thorough diagnosis, see the Troubleshooting Guide.

No spark is occurring, and/or I'm being shocked during use.

Ensure the electrode insulators are clean and white, not covered in black carbon.

If the issue persists after they are clean, something else is going on. For more a more thorough diagnosis, see the Troubleshooting Guide.
The stream of fire is shorter than expected.

The system should be able to send out a continuous appearing blast of flaming fuel over 7 meters in length at the beginning of each blast you send. When holding the trigger down, the fuel and flames will pull back slightly due to the fact that after the initial stream is emitted, we are sending fuel into an already existing fireball and burning it up faster.

If your system seems to suffer significantly shorter distances (< 4.5 m), one or more of the following is happening:

1. Wind is negatively affecting the stream’s consistency, causing it to scatter and atomize into droplets more easily and burn up faster. We are working on a solution to increase the resilience of the stream when it is windy. If you have access to an indoor warehouse or otherwise windless environment, place a rock or other marker at the 7 meter mark and have someone film from the side as you send a few 2 second bursts. If it doesn’t reach the marker in a windless environment, consider items 2 and 3 below.

2. The stream is contacting one of the electrode tips. If the stream physically contacts the electrode tips, it will cause a severe reduction in performance as it scatters and breaks the stream immediately as it exits the nozzle. Adjust the electrodes so there is room for the stream to pass by. Video instructions are available on the Videos tab of this page.

3. There is a problem or obstruction with the fuel system (check valve, pump, or nozzle). Either something’s clogging things up, the check valve is stuck partially open, or the pump has an issue. 

For more a more thorough diagnosis, see the Troubleshooting Guide.

I hear a hissing sound by the fuel cap, is that normal?

Make sure there isn’t a snake nearby, but yes, the check valve in the center of the cap can and will flutter under various conditions, producing a hissing/whistling sound. You can quickly equalize the pressure difference by opening and closing the cap, but it may continue shortly thereafter. It’s commonly in a state of being partially open.

If you aren’t experiencing reduced performance or liquid fuel leaking, your valve is operating normally. The check valve opens slightly to allow air in to replace the fuel drawn out and prevent a vacuum condition. As long as it is able to open (you can gently press it with a pick or screwdriver from the outside and see how easy it is to move) and it seals any liquid spills, everything is exactly as it should be.

Some fuel ends up on the ground instead of burning up in the stream, why?

Nature of the beast. We’re sending a stream of fuel out of a nozzle at high speed with the goal of achieving maximum distance with the inputs supplied as well as being useful (igniting your target). To do so, enough fuel is required to maintain the stream’s range and support continued ignition of what you’re aiming at.

How much of the stream and the scattered particles around it ignite depends on temperature, humidity, wind, fuel pressure, fuel velocity, electrode position, nozzle geometry, etc.

For other issues, or a more thorough diagnosis, see the Troubleshooting Guide below.

troubleshooting guide

Pulsefire® LRT
A step-by-step guide to determining the root cause and solution of any problem.

DIAGRAMS

LRT Exploded View

Backpack Exploded View

Circuit Board Connections

Electrode Alignment

Videos

Coming soon: Instruction videos and component repair/replace videos.

Contact Us

If you need help beyond what’s available in the support center, we’d be glad to assist.

Email us at: [email protected]