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4.12.2 Disassembling and washing viscometer
1 Remove the three setscrews from viscometer cover, and then remove the cover.
2 Place the viscometer upside down while applying wiping paper to the plunger, and then
remove the plunger. (Let all of the ink remaining in viscometer seep out to the wiping
paper.)
3 Make sure that no ink remains in viscometer, and then pull out the cylinder. (If ink remains,
it will soil the coil.)
4 Put the plunger and the cylinder which are removed, in a beaker filled with makeup, and
wash them for at least 5 minutes using an ultrasonic washer.
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