Agilent 8453 Dissolution Testing System Installing and Operating Manual 87
Using the Valve Unit and Valve-pump Controller 4
Operating Your Valve System
Operating Manually
You use the Manual Advance button at the rear of the valve unit to move the
valve one position forwards. You can use the Manual Advance button only
when the valve unit is in manual mode.
To operate manually:
1 Press the Remote/Manual switch up for manual mode, see “Switching
Between Remote and Manual Mode” on page 86.
2 Press the Manual Advance button to move the valve one position forwards.
The display on the front of the valve unit changes to show the next position.
Operating Your Pump
Make sure the pump is connected electrically to the valve-pump controller. If
not refer to “Installing Your Peristaltic Pump 8VS” on page 28 or “Installing
Your Peristaltic Pump 1VS” on page 46.
To turn on line power:
1 Press the line power switch at the front of the pump.
Switching Between Remote and Manual Operation
When the controller-to-pump cable is not connected to the rear of the pump
you can operate the pump manually. You can use the switches on the front
panel of the pump.
When the controller-to-pump cable is connected to the rear of the pump you
can only operate the pump remotely. You cannot use the switches on the front
panel of the pump. When the pump is on and pumping solvent, the valve-pump
controller's status lamps display the pump channel that is pumping.
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