Hitachi PB Series User Manual page 23

Section 1
1 When positioning the end of the print head above the printer main body
installation surface, ensure that the distance between the end of the print head
and the installation surface does not exceed 1.5 m.
2 When positioning the end of the print head below the printer main body
installation surface, ensure that the distance between the end of the print head
and the installation surface does not exceed 1 m.
10. When using the printer for upward or lateral printing, ensure that the upper end of
the rising print head cable is positioned not more than 0.5 m above the print head.
11. If you fixed the print head, ensure that the minimum bending radius of the print
head cable is at least 150 mm.
12. The ink beam may sometimes be deflected (for instance, due to dirt). Any facilities
positioned in the direction of ink ejection should be covered as needed to avoid
soiling with ink.
13. When connecting an exhaust duct to the printer, install a damper and adjust the air
velocity at the intake port to 0.3 to 0.5 m/s. (Use an anemometer for verification. If
the air velocity is too high, consumption of makeup ink will increase.)
1.3 Installation Precautions 1–13