Dionex UltiMate 3000 Series, Руководство по эксплуатации

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UltiMate 3000 Series:
SD, RS, and BM Pumps
Operating Instructions Page 155
5. Have the pump deliver some µL/min until the following pressure has built up:
Pump Type Pressure
RS pumps 75 MPa
SD pumps 45 MPa
BM pumps 35 MPa
6. When this pressure has been built up and when the pump delivers a master flow of
1 µL/min (ISO-3100BM: 10 µL/min), the pressure should increase or remain constant
at least. If it does not, this indicates possible leakage.
7. Find and eliminate the cause for the leak, and then perform the test described under
this list. Possible sources are:

Capillary connections
Inspect them for signs of leakage and tighten leaking connections.

Piston seals .

Inspect the piston seals for leakage (

page 134).

Consider replacing the piston seals (

page 135).

If leakage is observed with new piston seals, operate the pump for at least
2 hours at 35 MPa to run in the seals. (In this case, tightening the pump head
screw does not help.)

Check valves

Tighten the valve nuts (

page 128).

Remove the valve cartridges (

page 128) and clean them, for example, in
an ultrasonic bath.

Purge valve
Inspect the purge valve knob and purge unit for indications of leakage.
Test
a) Pressure up the pump. This is the best way to identify a leaking connection.
b) Allow 5 minutes for the pump to stabilize. This is important as the pressure drops
faster during the first 5 minutes, because the seals and other components have to adjust
the pressure.