Test Of Solenoid Valve/Pump - Hitachi RX Technical Manual

6.13 Test of solenoid valve/pump

● The operation confirmation of solenoid valve and pump is performed.
1 Supply valve
Recovery valve
3
Circulation valve
5
7
Makeup valve
9 Shutoff valve
11 Viscosity meter
●If circulating system can not be operated due to no ink ejection, ink overflow from the gutter and such,
there are possibilities of solenoid valve or pump failure. Please perform operation test under service
personnel's guidance.
●In an operation state, only an operating state is displayed.
The operation confirmation of solenoid
valve and pump is performed( Operates
each valves individually ).
At the maintenance menu, press Solenoid valve / pump test .
1
The solenoid valve / pump test screen is displayed.
Solenoid v/p test
MV1 Open Close
Open Close
MV3
Open Close
MV5
Open Close
MV7
MV9 Open Close
Ink pressure
Press operation button.
2
The operating state of the solenoid valve and the pump is displayed.
(Confirm the operation by an operating sound.)
Open
Close
Operated : The pump is operated.
Stop
(MV1) 2 Replenishment valve
(MV3) Agitation valve
4
(MV5 Pressure relief valve
5
(MV7) Cleaning valve
6
10
(MV9) Pump
(MV10) Exhaust valve
12
Different operations by state
Ink stop state
[Stop
Visco-
MV2 Open Close
meter
Open Close MV11
MV4
Open Close
MV6
Open Close
MV8
Oper-
Pump Stop
ated
０．０００ (MPa; standard value : ０．２５０)
: The solenoid valve is opened.
: The solenoid valve is closed.
: The pump is stopped.
(MV2)
(MV4)
(MV6)
(MV8)
(MV11)
Except for Ink stop state
Displays operating state only.
Operating test such as open/close valve cannot
be performed.
] 2015.07.07 12:45
Com=0
Oper-
Stop
ated
Open Close
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●Test of solenoid valve/pump 6-25