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13.5. Acrylic lid
The lid has three major functions:
it protects the printed model from potential damage, helps to
contain resin fumes inside the box and
blocks a significant amount of UV light
so it doesn’t
reach the printing chamber. Especially the last part is important - if you leave the resin in the tank
and keep the lid open,
it can start to solidify quickly
depending on the environment.
The lid won’t stop 100% of UV light - do not place the 3D printer next to a window, otherwise
the sunlight might cure the resin in the tank.
This also means that
you shouldn’t disable the cover check.
It may be tempting to watch the
print process, but for the sake of better results and safer operation, keep the lid closed during the
print. You can, of course, open it for a quick check and then close it again.
Don’t run the printer with the lower case panels removed or with any parts missing. The case
helps to contain the UV light.
You can wash the lid with isopropyl alcohol,
do not wash it with ethanol!
Do not use rough
materials to clean the lid (e.g. sanding paper, rough sponges).
13.6. UV light and potential health risks
Eyes are very sensitive to UV light and UV radiation,
because the cornea absorbs high amounts
of UV light. Extended exposure to strong UV light may lead to corneal damage, macular
degeneration or cataracts - these conditions can ultimately lead to blindness.
This is why the Original Prusa SL1S is designed to contain the UV light inside, which means that
when used according to the instructions in the manual, there are no health risks related to UV
radiation during regular use.
DO NOT LOOK DIRECTLY INTO THE UV LIGHT AND DO NOT PRINT WITH THE BODY
COVER REMOVED! If you want to check the UV led panel, look at it through your phone
camera app or take a photo, so you won’t look directly into the UV light.
13.7. Fan cleaning / Removing dust
It’s a good practice to
clean the fans from time to time,
especially if you have pets at home - the
recommended time period will vary depending on the environment, in which the SL1S is used. In
general, it’s good to
inspect the printer every 6-8 weeks.
There are three fans placed inside the
printer. You can get to the side fan and bottom fan by removing the main body cover.
First,
turn off the printer
and disconnect it from the power source. Locate eight screws on the
sides of the printer (four on each side) and remove them with an Allen key. Then carefully slide the
body cover out.
Be careful not to damage any cables which are attached to the power button.
This will give you better access to two fans. Use a can of compressed air to clean the fans
carefully.
The third fan is located on the backside of the printer. Locate two screws holding a small door
closed and remove them. Open the door and use a can of compressed air to clean the fan.
Never blow compressed air on running fans!
Dust can also accumulate on the underside of the display and on the reflector. You can clean
these parts carefully with compressed air. First, unscrew the eight screws holding the display in