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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).
Exhaust duct
Pump unit
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:
Part name (used location)
Self-tapping screw M4X12
(attaching pressure system, etc.)
Self-tapping screw M4X16
(attaching solenoid valve)
Self-tapping screw M4X12
(attaching pump cover)
Self-tapping screw B M3X10
(attaching ICU joint)
Self-tapping screw 3X8
(attaching door lock body)
Driving part area
Companion
parts name
ICU base A
ICU base B
Front panel
Main ink tank
ICU base B
P side plate
ICU base A
Door lock
body
4-1
(PXR-D, PXR-H)
Ink circulating area
Unit door
Reference tightening
Companion
material
PBT(G30)
1.7±0.3
PBT(G30)
1.7±0.3
PP
1.33±0.22
PP
1.33±0.22
PBT(G30)
1.7±0.3
ADC12
1.7±0.3
(aluminum)
PBT(G30)
0.5±0.1
POM
0.75 - 1.04 7.6 - 10.6
Makeup ink reservoir
Ink filter
Main ink tank
Ink reservoir
torque
N·m
kgf·cm
17.3±3
17.3±3
13.6±2.2
13.6±2.2
17.3±3
17.3±3
5.1±1
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Troubleshooting
