Longer Ray5 - Smoke/Flame Detection

[TwoJsAndaTaco]

I keep getting the smoke/flame detection alarm. The craziest thing is that I've even gotten it during framing (no laser output). Attached is the video of my latest cut and where the alarm triggered (of course if was almost finished with the cut).

Ray5 Firmware: V1.2.3(8M.H35.0103)
Lightburn: 1.1.03, built Fri 2022-03-11 @ 12:38
(yes, I'm a SW Test Engineer and sometimes these details matter)

I'm using Cricut Basswood (use what you got while learning)
5 mm/min Speed
90% Power (tried 80% based on my test cuts, but not consistent so upped to 90%)
No air assist

20220318_141155.jpg

20220318_141207.jpg

flame-alarm.mp4

Any help would be appreciated.

Lea
(2 Js and a Taco)

[TwoJsAndaTaco]

I just tried to move my project to the top right corner (I thought away from the sensor). The project got about 75% complete and I got the smoke/flame alarm.

[TwoJsAndaTaco]

3rd attempt at troubleshooting. I purchased an airbrush compressor from HF and tried to direct the smoke away from the detector. Failure

Lea
2 Js and a Taco

[piratebob]

I Have the longer ray 5 and it is a good machine however the flame sensor is a bit too sensitive and I don't believe there is any way to adjust it. What I would do is if it continues causing any issues (False readings) I would just cover it up with a small piece of black electrical tape so that you can get thru your job without disruptions, please be aware that this safety issue should never be bypassed but as long as you are with the machine, while in operation, you should be fine to complete your project.
Also use a fan to pull any smoke away from your engraver while its in operation to aid in preventing the flame sensor from being triggered.

[burnedpickle]

Lea and PB,

I am completely new to the laser hobby and just bought a RAY 5 (5W). Everything on it seems to work (including burning the files that came on the micro sd card) but I am having problems with the smoke/fire alarm triggering without any smoke or fire when I try to print a picture on wood. I have a fan set up to take care of smoke but I really do not think it is producing any. Can either of you help with either of these questions?

1. Where exactly is the sensor so that I know where to place the piece of tape?

2. Is there a way to run a diagnostic to determine if the sensor is faulty? If not a direct way to check sensor, then is there a standard file, settings and material that should burn to completion, and would therefore indicate a problem on my machine if the alarm is triggered?

Any help would be appreciated. Thanks in advance.

[piratebob]

The censor is in either of 2 locations of which I can not say for certain. the first location would be directly in back of the power control module or the main control board that is mounted to the left corner front of your system, the second possible location is inside the housing of the laser head itself. I've seen it alternate between these two locations based on manufacturers ideas on where best to mount them. There are several videos on youtube that can be searched by indicating flame censor/fire alarm laser engraver + model type.
As far as testing for faulty censor I am unaware of how that can be done, my best guess is to contact longer3d directly regarding their exact placement and how to check/diagnose censor and if it is possible to adjust.

[LAHobbyGuy]

In the Console, type $261=0 and press Enter.

Rich

[RobinNC]

I must have accidentally done something right, or worse wrong lol, because there was a lot of smoke and absolutely no alarms.

At this point in my laser journey I have to laugh at the small and large mistakes. Thanks to the ever patient Patron I might actually accomplish something!

[burnedpickle]

Thank you Rich/LAHobbyGuy. It sounds like I need to read about all the settings. The other possible solution someone shared on Facebook is to put some sort of shield (tin foil, rubber cap, etc.) over the black sensor protrusion on the back of the control box.

Rick

[RobinNC]

The censor is in either of 2 locations of which I can not say for certain. the first location would be directly in back of the power control module or the main control board that is mounted to the left corner front of your system, the second possible location is inside the housing of the laser head itself. I've seen it alternate between these two locations based on manufacturers ideas on where best to mount them. There are several videos on youtube that can be searched by indicating flame censor/fire alarm laser engraver + model type.
As far as testing for faulty censor I am unaware of how that can be done, my best guess is to contact longer3d directly regarding their exact placement and how to check/diagnose censor and if it is possible to adjust.

Not sure if you have contacted Longer's support yet but if not make sure to include your order number, pictures, and a video if you have one. If not make one. By doing this you can avoid having them email you several times. Just a suggestion