Prusa Research i3 MK2.5, Руководство пользователя

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12 FAQ - Printer maintenance and print issues
12.1 Regular maintenance
12.1.1 Bearings
Every couple hundred hours, the smooth rods should be cleaned with a paper towel. Then
apply a little bit of general purpose machine oil on the smooth rods and move the axis back
and forth a couple of times. This cleans the dirt and increases longevity.
If you feel the axis is not running smoothly anymore, bearings can be taken out and greased
on the inside (they need to be removed from axis because the plastic lip will prevent the
grease from getting inside). Super-lube, or any other multi-purpose grease, will do.
12.1.2 Fans
Both fans should be checked and cleaned every couple hundred hours; dust or plastic
build-up can decrease their efficiency or even damage them. Computer cleaner spray will
get the dust away and tweezers can be used for little plastic strands.
The extruder cooling fan measure current RPM
​
(Revolutions Per Minute). Because of
that, the printer can detect problem that will cause the fan to slow down, like a piece of
filament getting stuck in it. If you get a fan error, check that it can rotate freely; clear any
debris that may be stuck in it. The print fan has no RPM so you need to check it visually, in
the same way as on the MK2S.
Pict. 35 - Nozzle cooling fan from Noctua
Pict. 36 - Fan error
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