Hitachi IJ PH - Ink Pressure Low

6-37
6.4.6 Ink Pressure Low
Ink Pressure Low
Resume the
operation.
Is it below the lower limit?
(Indicated value < standard
value x 0.90)
Yes
No
Turn the shaft at the center
of the pressure reducing
valve in the opposite
direction, and raise the
pressure to be within the
upper and lower limits.
Check the indicated value and
standard value of the ink
pressure on the Operation
management screen.
Can the pressure be
adjusted by the
pressure reducing
valve?
Replace the three-way valve
filter.
Replace the pressure reducing
valve.
Replace the pressure sensor.
Is the warning released?
Yes
Yes
Yes
No
No
No
Yes
No
Can the pressure be
adjusted by the
pressure reducing
valve?
Can the pressure be
adjusted by the
pressure reducing
valve?