When not using the system for a long time, in consideration of the next startup, perform the following procedures before turning OFF the power.
CAUTION: Clean the column of the gradient system at the end of analysis by pumping liquid for a minimum of 1 hour at a flow rate of 0.3mL/min and B.Conc of 100%.
Otherwise, the column performance may deteriorate.
Otherwise, the column performance may deteriorate.
CAUTION: Store the column of the gradient system with B liquid (100%) sealed in it.
Otherwise, the column performance may deteriorate.
Otherwise, the column performance may deteriorate.
1. Cleaning the Flow Line
1) Set a new glass fiber disk and PTFE filter in the reactor.
Click here for "(PPSQ) Disassembling/Assembling the Reactor".
1) Set a new glass fiber disk and PTFE filter in the reactor.
Click here for "(PPSQ) Disassembling/Assembling the Reactor".
2) Click [PPSQ Wash] (shutdown cleaning schedule) in the [PPSQ Analysis] window.
3) Enter 5 as the [Number of Cycles] and click [Register].
When using the PPSQ-x3A(Triple reacors model), register the other reactors.
4) Click [Start] on the [Sequence] menu.
Cleaning process starts.
When the washing process starts, the status color of the registration frame on the sequence analysis turns blue and after completing it, it turns black.
HINT: Alternatively Click [START] on the tool bar. Cleaning process starts.
When using the PPSQ-x3A(Triple reacors model), register the other reactors.
4) Click [Start] on the [Sequence] menu.
Cleaning process starts.
When the washing process starts, the status color of the registration frame on the sequence analysis turns blue and after completing it, it turns black.
HINT: Alternatively Click [START] on the tool bar. Cleaning process starts.
2. Removing Reagents
1) After cleaning, remove the solvent bottles in the order S2, S3, and S4B.
2) Execute the backflush operation for at least 5 minutes for each solvent.
1) After cleaning, remove the solvent bottles in the order S2, S3, and S4B.
2) Execute the backflush operation for at least 5 minutes for each solvent.
Click here for "(PPSQ) Removing Reagents".
CAUTION: The reagent is pushed back with considerable force. Exercise due care.
3) Remove reagent bottles R1, R2, R3, and R4 and perform the backflush operation for at least 5 minutes.
4) Attach clean empty bottles to the parts where reagent bottles R1, R2, R3, and R4 were attached and perform the purge operation for at least 5 minutes.
Click here for "(PPSQ) Replacing Reagents".
4) Attach clean empty bottles to the parts where reagent bottles R1, R2, R3, and R4 were attached and perform the purge operation for at least 5 minutes.
Click here for "(PPSQ) Replacing Reagents".
5) Attach clean bags to all the attachment points for the reagent/solvent bottles removed in steps 5) and 6) to prevent dust from accumulating.
6) Store the reagents in the respectively specified conditions.
6) Store the reagents in the respectively specified conditions.
3. Cleaning the Column and LC Piping
Replace the mobile phase with a cleaning liquid consisting of 6 parts acetonitrile and 4 parts distilled water and clean the flow line.
Replace the mobile phase with a cleaning liquid consisting of 6 parts acetonitrile and 4 parts distilled water and clean the flow line.
1) Click [LC Control] on the [Maintenance] menu in the [PPSQ Analysis] window.
2) Replace the gradient mobile phase A and B with a cleaning liquid consisting of 6 parts acetonitrile and 4 parts distilled water.
3) Remove the suction filter of the solvent delivery unit for mobile phase A from the mobile phase bottle and clean it with a small amount of the cleaning liquid described above.
4) Put the suction filter in a container holding the cleaning liquid.
5) Open the pump unit's drain valve by turning the lever 180º counterclockwise.
2) Replace the gradient mobile phase A and B with a cleaning liquid consisting of 6 parts acetonitrile and 4 parts distilled water.
3) Remove the suction filter of the solvent delivery unit for mobile phase A from the mobile phase bottle and clean it with a small amount of the cleaning liquid described above.
4) Put the suction filter in a container holding the cleaning liquid.
5) Open the pump unit's drain valve by turning the lever 180º counterclockwise.
6) Press the [purge] button on the solvent delivery module.
7) Insert the end of the drain tube in a suitable container.
Check that liquid flows out of the end of the drain tube. Continue pumping liquid until the container holding the end of the tube contains 20 to 30 mL of liquid.
Check that liquid flows out of the end of the drain tube. Continue pumping liquid until the container holding the end of the tube contains 20 to 30 mL of liquid.
8) Press the [purge] button on the solvent delivery module. The liquid stops flowing.
9) Close the drain valve by turning the lever 180º clockwise.
10) For the solvent delivery unit for mobile phase B, perform steps 3 to 9 as well.
11) Insert the outlet of the piping tube connected to the detector's cell outlet in the container.
12) Set the LC unit conditions.
10) For the solvent delivery unit for mobile phase B, perform steps 3 to 9 as well.
11) Insert the outlet of the piping tube connected to the detector's cell outlet in the container.
12) Set the LC unit conditions.
Pump: T.Flow 0.3mL/min, B.Conc 50
Detector: Lamp OFF
Column oven: 35ºC
13) Click [Download] and flow liquid for a minimum of 3 hours.
If the pump is not running, click [Activate].
14) After pumping liquid for 3 hours, entering "0 mL/min" as the pump flow rate.
15) Click [Download]. The flow stops.
If the pump is not running, click [Activate].
14) After pumping liquid for 3 hours, entering "0 mL/min" as the pump flow rate.
15) Click [Download]. The flow stops.
4. Removing the column
1) Open the cover of the column oven.
2) Remove the tubing connecting the inlet/outlet of the column.
3) Attach the LC tube for cleaning instead of the column removed.
1) Open the cover of the column oven.
2) Remove the tubing connecting the inlet/outlet of the column.
3) Attach the LC tube for cleaning instead of the column removed.
5. Turning OFF the Power
1) Quit all software and the Windows OS running on the control PC.
2) Turn OFF the power to the control PC, the PPSQ, the pump unit, the detector, and the column oven.
1) Quit all software and the Windows OS running on the control PC.
2) Turn OFF the power to the control PC, the PPSQ, the pump unit, the detector, and the column oven.
6. Stopping the Supply of N2 Gas
1) Close the outlet-side needle valve of the N2 gas cylinder's pressure regulator and the cylinder's shut-off valve.
1) Close the outlet-side needle valve of the N2 gas cylinder's pressure regulator and the cylinder's shut-off valve.
7. Restarting the System
When restoring power to the system, follow the procedure described in "Starting Up the Gradient System(Startup After Long-Term Shutdown".
When restoring power to the system, follow the procedure described in "Starting Up the Gradient System(Startup After Long-Term Shutdown".
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