Use gloves. The CW1 / CW1S parts may be wet from the IPA.
⬢For this step, please prepare these things:
⬢CW1 / CW1S Stainless steel tank lid
⬢Assembled IPA pigment filter
⬢On the tank lid, press the plastic button to push out the knob from the opposite side.
⬢When the knob is pushed out, slide the IPA filter assembly onto the holder from the bottom side.