Metrohm 812 Valve Unit - Manual (Page 16)

3.1 Manual operation
812 Valve Unit
13
3 Operation
3.1 Manual operation
Switch instrument on/off
The 812 Valve Unit is switched on and off by connecting/dis-
connecting the 6.2152.000 power supply unit attached to
connection 7 (see section 2.2).
After the instrument has been connected to the mains the LEDs
on the "FILL" or "INJECT" keys light up and show that the
instrument is ready for use.
Switch to "FILL" position
FILL
By pressing the "FILL" key, the injection valve A or B is switched
to the "FILL" position.
Fill
1 2
3 6
4 5
Lighting up of the LED in the "FILL" key indicates the "FILL"
position.
Switch to "INJECT" position
INJECT
By pressing the "INJECT" key, the injection valve A or B is
switched to the "INJECT" position.
Inject
1 2
3 6
4 5
Lighting up of the LED in the "INJECT" key indicates the "INJECT"
position.