4-1
4. Maintenance of Circulation System
4.1 General Structure of Circulation System
4.1.1 The general structure of the circulation system is shown in the following
figure. Using an open/close type door (unit door) as a partition, the
system is roughly divided into an ink circulating area (the front side of
the equipment) and a driving part area (the rear side of the equipment).
Caution:
Since the circulation unit is made of plastic, tightening the screws with excessive
torque will break the unit. See the table below for reference torques:
Reference tightening
torque
Part name (used location)
Companion
parts name
Companion
material
N
·
m
kgf
·
cm
ICU base A
PBT(G30)
1.7±0.3
17.3
±3
ICU base B
PBT(G30)
1.7±0.3
17.3±3
Front panel
PP
1.33±0.22
13.6±2.2
Self-tapping screw M4X12
(attaching pressure system, etc.)
Main ink tank
PP
1.33±0.22
13.6±2.2
Self-tapping screw M4X16
(attaching solenoid valve)
ICU base B
PBT(G30)
1.7±0.3
17.3±3
Self-tapping screw M4X12
(attaching pump cover)
P side plate
ADC12
(aluminum)
1.7±0.3
17.3±3
Self-tapping screw B M3X10
(attaching ICU joint)
ICU base A
PBT(G30)
0.5±0.1
5.1±1
Self-tapping screw 3X8
(attaching door lock body)
Door lock
body
POM
0.75 - 1.04
7.6 - 10.6
Makeup ink reservoir
Ink circulating area
Driving part area
Ink reservoir
Ink filter
Main ink tank
Pump unit
Unit door
Exhaust duct
Summary of Contents for IJ PH
Page 1: ...Service Manual HITACHI Printer Model PH Revision Aug 2011 Version First edition ...
Page 2: ... Revision of PH service manual Revision Chapter Revised Page ...
Page 13: ...1 2 2 Main body internal PH D 1 8 ...
Page 80: ...3 25 3 25 Circuit diagram of EZJ95 ...
Page 201: ...7 1 7 Attached Drawing 7 1 Circulation System Diagram ...
Page 202: ...7 2 7 2 Electrical Connection Diagram ...
Page 205: ...7 5 7 4 Dimensions around charge electrode and deflection electrode Nozzle diameter 65 um ...