Dionex P680 Manuale utente
June 2004 rev. 03 Page 1
© 2004 Dionex
P680 HPLC Pump System
Quick Installation Guide
Low Pressure Gradient Version
June 2004 rev. 03 Page 2
© 2004 Dionex
This Quick Installation Guide explains the basic installation steps for a P680A LGP-4 low-
pressure gradient pump system. For additional information, please consult the Operating
Instructions for the P680 HPLC Pumps.
1. Preparation
Bring the pump to a moderate temperature for four hours to allow any condensation that
might have occurred during transit to evaporate. Do not connect the pump to the mains during
this period. If it is obvious that condensation did not evaporate completely, continue to warm-
up the pump (which is not connected to the mains) until the condensation is completely gone.
Place the pump on a firm and level surface that is free of vibration. Make sure that the surface
is resistant to solvents. Avoid locations with extreme changes in temperature (such as direct
sunlight or drafts) and high air humidity.
2. Remove the caution label
You may remove the “caution” label
from the pump's enclosure.
Important: The pump is primed with 2-propanol. During initial operation of the
pump, make sure that the solvents used are miscible with
2-propanol. Otherwise, follow the appropriate intermediate steps.
June 2004 rev. 03 Page 3
© 2004 Dionex
3. Connect the eluent tube to the solvent bottle
The bottle caps have five holes. Four holes are capped by default (white caps), one hole is
open for the eluent tube. A retaining guide holds the tubing in place.
Guide the eluent tube through the retaining
guide and into one of the five holes in the
bottle cap.
Place the eluent frit on the end of the tube,
place the complete assembly into the bottle,
and hand-tighten the bottle cap.
Please note: To exchange the tubes, remove the frit first, then the eluent tube, and then
the retaining guide.
Important: To draw solvents from the solvent bottles, use only eluent tubes with filter
frits. This prevents contamination of the HPLC system.
Please note: Regularly check the frits for permeability. Especially when working with
aqueous solvents, algae and other microorganisms can grow on the frits
and clog them. Therefore, exchange the solvents at regular intervals. Rinse
the bottles thoroughly before using them again. Replace the frits as
necessary.
Retaining guide
June 2004 rev. 03 Page 4
© 2004 Dionex
4. Place theSOR-100 Solvent Rack on top of the
pump
The SOR-100 Solvent Rack (part no.
5030.9200) fits on top of the P680.
For safety reasons, place the eluent
bottles on the tray on top of the pump.
The SOR-100 Solvent Rack is shipped with two 1-liter eluent bottles, two 2-liter eluent
bottles, appropriate tubing, and bottle caps.
5. Connect drainage tubing
Please note:
Drainage tubing can be connected to the
bottom right of the pump to direct liquid
leaks to the waste. To prevent damage to
the pump, make sure that no part of the
tubing is placed higher than the
connecting port.
Purge valve outlet
Waste outlet
June 2004 rev. 03 Page 5
© 2004 Dionex
6. Connect the eluent tubes to the built-in degasser
First, feed the eluent tubes from the top of
the pump through the opening in the
pump's top cover. Please note: The tubing
shipped with the P680A LPG-4 is slightly
different from the tubing shown in the
picture.
The four eluent tubes are now inside the
fluidic compartment of the pump.
The eluent tubes are labeled: A, B, C, and
D.
Remove the blind fitting from the
degasser inlet (here shown for channel
A).
Opening for eluent tube
Eluent tubes
Built-in de
g
asse
r
Blind fitting
June 2004 rev. 03 Page 6
© 2004 Dionex
Guide the end of the tubing through the
appropriate degasser fitting (from the
pump's accessories kit).
Insert and hand-tighten the fitting on the
degasser inlet. Repeat these steps for
eluent tubes B, C, and D.
7. Install the Active Rear-Seal Wash System
The pump is shipped with the active rear-
seal wash tubing bypassing the peristaltic
pump because the tubing under the
peristaltic pump lever remains compressed
and does not relax, thus blocking the wash
solution. This can happen if the pump is not
running for a longer period, e.g., during
shipment. Engage the peristaltic tubing in
the peristaltic pump before you turn on the
pump for the first time. To do so, slightly
press the lever upward, remove the tubing,
and release the lever.
Rotor Lever
June 2004 rev. 03 Page 7
© 2004 Dionex
To take out the rear-seal wash solution
reservoir, pull it upward and out of the
pump.
The active rear-seal wash system consists of
a peristaltic pump (tubing pump) and a wash
solution reservoir with integrated sensors.
Rear-seal washing is activated periodically
once per hour and runs for five minutes.
While holding the cap with one hand,
unscrew the reservoir from the cap.
Fill the reservoir with a wash solution (e.g.,
a water/methanol mixture).
Make sure the wash solution is compatible
with the eluents used during analysis.
Please fill the reservoir only half full! This
is to leave room for small amounts of
eluent, which may leak through the piston
seals when the seals start aging!
Pulling direction for
removal of the reservoir
June 2004 rev. 03 Page 8
© 2004 Dionex
Rear-seal wash solution reservoir from the
rear side.
Engaging mechanism of the rear-seal wash
solution reservoir.
Re-insert the rear-seal wash solution
reservoir.
June 2004 rev. 03 Page 9
© 2004 Dionex
Please note: Fill the wash solution reservoir with approximately 50 mL of wash solution
before turning on the pump for the first time. Please avoid to use the pump
without rear-seal washing.
Important: If you use solvents with a high salt content, do not operate the pump for
more than 5 minutes without activating the rear-seal washing. This may
damage the seals and pistons.
Important: Do not forget to empty the wash solution reservoir before shipping the
pump.
Please note: To avoid a high salt concentration in the wash solution when using eluents
with a high salt content, replace the wash solution approximately once per
week.
For further information about the active rear-seal wash system, please refer to the appropriate
section in the P680 Operating Instructions.
8. Verify correct voltage setting
Dionex instruments are factory-set for
operation at the local voltage requirements
in the destination country. However, please
verify that the voltage setting is appropriate
for your local requirements before
connecting the pump to the mains. If the
setting is inappropriate, follow the steps in
the pictures below to reset the voltage at the
selector on the pump's rear panel (next to the
main supply connector).
Warning:
Before resetting the voltage, turn off the
pump. Be sure to disconnect the power cord
from its source.
Use a small srewdriver to open the fuse
cartridge (as indicated in the picture).
Set to 230 V
June 2004 rev. 03 Page 10
© 2004 Dionex
Replace the fuses as appropriate.
Important:
Use only appropiate fuses (for 230 V setting:
Fuse, 1 A, TT, 5 x 20 mm; for 115 V setting:
Fuse, 2 A, TT, 5 x 20 mm). See the P680
Operating Instructions for details.
Use small pliers or tweezers to pull the small
voltage selector board out of the power
socket housing.
Place the board (with the writing face up) on
a firm surface. Turn the board so you can
see the voltage selection. Without turning
the board, adjust the plastic clip to the
correct voltage. Make sure the clip locks
into position.
Reinstall the voltage selector board and the fuse cartridge. Verify once again that the voltage
setting is appropriate (see the first picture in this section).
Please note: For minimum interference, all modules should be connected to the same
mains output (same phase).
220 V settin
g
110 V setting
Fuse cartridge
Cover
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