Hitachi IJ RX2 Service Manual page 251

Sequence Name Cleaning stop
Operation [Shut down]→[Shut down] or [Circulation Control] - [Cleaning stop]
Remarks
－
Step 1 2
High- Interval
Outline
voltage OFF
Time [sec.]
RX2 1 3
MV1: Supply 2.ON 2.ON
MV2: Replenishment
MV3: Recovery 3.ON 3.ON
MV4: Agitation
MV5: Circulation
MV6: Pressure relief
MV7: Makeup
MV8: Cleaning
MV9: Shutoff 1.ON 1.ON
Pump ON ON
Reduce the
3 4 5 6 7
Pressurize Eject Makeup
the makeup
path
1 20 1 3 1
2.ON 3.ON 3.ON 3.ON 3.ON
3.ON 4.ON 4.ON 4.ON 4.ON
2.ON 2.ON 2.ON 2.ON
1.ON 1.ON
1.ON 1.ON 5.ON 1.ON 5.ON
4.ON
ON ON ON ON ON
Suck the circulation / recovery path
8 9 10 11 12
Check the Pressure-
MV8 OFF relief
3 1 2 1.2 0.7
3.ON 3.ON 3.ON 3.ON 2.ON
4.ON 4.ON 2.ON 2.ON 3.ON
2.ON 2.ON 1.ON
1.ON 1.ON 1.ON
4.ON
1.ON 5.ON
ON ON ON ON ON
13 14 15 16
Pressure- Pressure-
relief the relief the
supply path supply path
20 5 100 5
2.ON 2.ON
1.ON 1.ON
1.ON 1.ON
ON ON ON ON