Hitachi PH - Pressure Adjustment

7-29 ● Pressure Adjustment
7.12 Pressure Adjustment
● Check the pressure at regular intervals of about one week.
Verify that the ink is being ejected. From the menu screen,
press the Maintenance key.
The "Maintenance menu" screen then opens.
1
Press Operation management .
The "Operation management" screen then opens.
2
The standard pressure
value varies with the
ink type and nozzle
diameter.
Shut
down
Manual
Back
Environment setup
menu
Next
menu
Maintenance menu Status: Ready
Prev.
menu
Operation
management
Test print
Excitation V update
(Nozzle test)
View alarm
history
Circulation control
View software
version
Comm. monitor
Password
protection
HOME
Shut
down
Manual
OK
Show
cursor
←
→
Decre-
ment
Incre-
ment
1234567890
Re-
cover
Next
dis-
paly
Reset
Operation management Status: Ready
Deflection voltage 5. 6 (kV)
Ambient temperature 3 0 ( ℃ ; range: 0 ～ 45 )
Ink pressure 0. 2 5 5 (Mpa; standard value:0. 255 )
Ink viscosity 1 0 0 (standard value:1 0 0 )
Note the ink pressure reading. If it is outside the standard
value range, open the maintenance cover and rotate the shaft
at the center of the pressure-reducing valve with a flat-blade
screwdriver.
Make adjustments so that the pressure reading is the standard value ±0.002.
4
Pressure-reducing valve
To raise the pressure : rotate clockwise.
To lower the pressure: rotate counterclockwise.
When HOME is
pressed, the system
returns to the print
description screen.
Press Next display .
3