Currently, we’ve got a few issues with the lasers unfortunately.
Pearl’s exhaust fan needs to be replaced.
Dorian’s power switch needs to be replaced and the bed releveled
Tarkin is having an issue with X scaling, as well as a persistent issue with jerking on some design elements.
Those first two should be fixed within the next 3 days. Currently undetermined re: Tarkin’s “yellow tag” issues being fixed.
Machine status will soon be added to the wiki and regularly updated there so we won’t need to make posts like this with quirks of the various machines.
Preventative and regular maintenance is one of the main things we are focusing on moving forward, including regular cleaning of honeycomb beds to reduce flashback. Please report any issues you have with the machines (even the above) using the red QR codes if you notice anything not working as expected!
Heya - back again on Tarkin today and now its throwing a “Water Prot 1” error on start.
Previous dude said he had the error but was able to get working after turning it off and on again. But now its not making any difference after rebooting the machine or the chiller.
@NickE@dannym Sounds like the water protection gremlin that @okyeron is seeing might be similar to what y’all saw just before I got in on Monday? I don’t remember if you said it could be intermittent or if there’s an easy user-side troubleshooting step?
i did see both water flow sensors reading 0 so it’s not a stuck sensor. the chiller shows pressure, but you would have pressure without flow if it was blocked. it can’t really get blocked, though
Just out of curiosity do we know why these issues are happening? If so then maybe it would be helpful to let members know cause they may not understand that something they are doing is causing these issues. Is the fan exhaust a cheap one, cause I feel like this has happened previously, same with power switch on Dorian.
Exhaust fan died because they’re cheap $200 fans full of acrylic soot, no user error there. This was fixed a few days after the failure & we now have spares on hand. This fan was last replaced in 2022
Scaling issue was a worn belt and was fixed (detailed in Tarkin specific thread), no user error/uncommon maintenance item. Also fixed ~48 hours later.
Dorian power switch was replaced 72 hours (maybe add 24) after failure, and its failure is a combination of two things: relatively low sustained thermal amp rating of switch + people riding the switch closed so the contacts aren’t thrown quickly. This is the only one that could be considered user error.
The switches are $4 each, and fail relatively infrequently. The thermal amp rating issue was only discovered after the most recent order for them was made.
Potential solves for this are: buy a switch with a higher amp rating (rating may not be sufficient for the “inrush” current sustained), or drill a hole for a 2nd button, replace the other switch with a button, and wire them to a relay. Neither of these will be tried until the existing switch dies again however.
Dorian has a long history of switch failures with multiple types.
it’s a lot of current for 120vac, but I suspect it has a high inrush or (less likely) inductive kickback when switching off
I’d recommend adding an inrush limiter. there’s a DIN rail version for $40 on Amazon
it would be a good idea to put a good clamp on ammeter over it to see if high inrush is really the issue, and where it’s coming from
either the low voltage dc supply or the hvdc laser tube driver could be the source of inrush. it would make sense to replace a defective component if it’s not drawing normal inrush for that device
but, it could just be that the average current draw in normal use is borderline tripping the breaker and it’s exceeding the average sustained current rating for the switch. i can say we’ve used multiple switches of at least 2 switch types and those were basically “normal” switches of middling quality that i wouldn’t expect to fail often under normal loads
Even though it’s much higher power, Tarkin avoids this issue because its high current dc power supplies don’t actually get switched off at the mains. they stay in standby mode until the switch for the Ruida is turned on and they power up from standby. I don’t think there’s a standby function on Dorian’s hvdc power supply but it might be possible to use it that way. that would help regardless of whether the prob is inrush or sustained current draw
