Regolith is one of the worst stuff known to man that could accumulate on electronics and moving parts. NASA replicated Regolith and has a manual. Researchers studied Regolith as a 3D print material - and found it can be used. We even have the formula to make Concrete from it by adding water and refined regolith or even dry refined regolith.
Also, we understand how Regolth behaves electrically. It's not a good conductor in the dry state but at least a conductor. However, just a little water rapidly changes that and makes it a rather good conductor! Tiny amounts rapidly increase the conductivity, making it very dangerous to electronics in combination with dew - which happens in low temperatures.
Dust on bearings gunks them up and then starts to grind away the rails.
Dust on filament gets pulled into the hotend and can create clogs.
So, it's rather clear that we don't want this regolith-dust on our printers.
You immediately need to take measures to prevent dust from accumulating on the electronics and secondary on moving parts!
If possible, housing the electronics in a dust-sealed box would be preferential, but
housing the printers as a whole in an enclosure might mitigate most of the trouble for the start.
The most simple enclosure that would allow for such would be a simple large wood box, provided that the door contains a seal. For fire protection and to reduce the risk of one spot of the housing getting too high, the inside air should be constantly mixed, best by some sort of permanent running large fan. For further protection, the setup needs to be vented at least when the internal temperature gets too high, allowing to use of the heat of the printers to stabilize the internal temperature - and best even log it.
A venting-trigger temperature should be below 100 °C air temperature, better even 80 °C. But how to reduce the temperature?
The easiest cooling solution is to intake air from the outside, but we need to get the dust out of that. An easy solution would be a HEPA-filter unit. There are permanently running types, that would keep the printer-box(es) under over pressure compared to the atmosphere, keeping the dust from creeping into the box, but that doesn't give us control to heat the chamber if it gets cold.
But we could salvage an old printer board for that! Setting up the thermosensor in such a way that it measures air-temperature is easy. Using the bed and/or hotend exit of the board to some sort of heating element with grids at the filtered intake should be doable, evening out the temperature in the printer box to a minimum safe temperature.