To remove bound tubes, carefully slip a small screw driver between the cell hole and the spring from the bottom of tube
and pry in on the spring. A properly installed DUSTUBE will be seated perfectly in the cell hole as described, with the
vertical seam straight, and not twisted between tube hook and cell hole.
When removing and installing DUSTUBES, use extreme caution to avoid damage to the tubes and spring rings. Any
leakage at the bottom, caused by improper installation, will affect both DUSTUBE life and collector efficiency. An
accumulation of dust surrounding a tube is evidence of a leak.
No paint or other coating should be applied to the sides of the cell plate holes, and any accumulation of deposited material
should be removed when new DUSTUBES are installed.