Metrohm 828 IC Dual Suppressor User Manual
Page 36
3 Operation
828 IC Dual Suppressor/ 8.828.1003 Instructions for Use
28
Start sequence
1 Installation
Install the 828 IC Dual Suppressor as described in Section 2.
• The IC Dual Suppressor must be switched on, mains switch
16 = ON, and also switched for remote operation, remote
switch 15 = ON.
2 Start software
• Start the IC Net 2.1 software or 761 PC Software 1.1, open
your system and connect it to the workplace.
761 PC Software 1.1:
The suppressor starts, the vacuum pump runs and, as soon as
the set working pressure has been achieved, LED "Vacuum" 5
lights up green.
• Start your system with Control/Startup hardware.
The system is run up, the high pressure pump starts working
and the system is equilibrated.
IC Net 2.1:
The suppressor is started together with the rest of the system,
the vacuum pump runs and, as soon as the set working
pressure has been achieved, LED "Vacuum" 5 lights up green.
After a short time the pump will build up pressure and, when the
value set for the pressure sensor has been reached (see page
22), current is applied to the suppressor cell. The LED "Current" 4
lights up green. This process takes about 1 minute, but this time
may vary depending on the set flow rate and the backpressure of
the system. When the cell voltage lies within the given range then
LED "Voltage" 3, followed by LED "Ready" 1, will light up green.
Please make sure that you
always start your system with
Control/Startup hardware. This is the only way to ensure that the
828 IC Dual Suppressor is controlled properly.
If you start the high pressure pump directly in the instrument window
then the suppressor will
not start up automatically with it. If this is not
noticed for a long time there is the risk that the cation exchanger will
become exhausted and have to be regenerated manually, see Section
3 Equilibrate
• Wait 20-30 minutes until the 828 IC Dual Suppressor is equili-
brated.
The suppressor is fully equilibrated when the background con-
ductivity remains constant and a stable baseline is obtained.