Hitachi IJ PH, Service Manual

Page: 123 / 211

5-3
(6) Attach a new nozzle and fix the nozzle setscrew, (2 locations), the nozzle IN joint
presser foot (sealing valve side), the nozzle OUT joint and the excitation connector.
“Caution”
(A) Confirm that a filter is present in the terminal area (inside the sealing
valve) of the nozzle IN joint.
(B) Wet the insert portion inside the sealing valve with the intensifier
to make it slippery and then, connect the nozzle IN joint.
“Caution”
If connection is imperfect, ink will below off.
The nozzle attachment position differs for different nozzle diameters as shown below:
(7) Cut the recovery side tube of the new nozzle into a suitable length and connect the
nozzle OUT joint.
“Caution”
(A) Get rid of the tube remaining on the joint in the (4).
(B) When the tube is hardly put in the joint because it slips, grasp the front
edge of the tube by a JK wiper or the like and put it in the joint.
(8) Put the charged electrode in the new nozzle and fix the video signal wire on the
charged electrode.
(9) Execute Ink stream alignment on the Circulation control screen.
“Caution”
(A) If you repeat Ink stream alignment, it will be diluted. Complete it by the third
time.
(10) Perform Excitation adjustment and Auto phase gain adjustment on the screen of
Adjustment/operation checkout.
(2 locations)
Recovery side tube
Nozzle setscrew
Take in the stepped part
Nozzle IN joint
presser foot
Filter
Nozzle out joint
Sealing
valve
O-ring P3.9
PH 65
µ
m nozzle
attachment position