Dionex UltiMate 3000 Series, Руководство по эксплуатации

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UltiMate 3000 Series:
SD, RS, and BM Pumps
Page 134 Operating Instructions
7.5.1 Visually Inspecting the Pump for Piston Seal Leakage
You can inspect the pump visually for liquid leaks from the piston seals.
1. Flush the rear seal wash system with the seal-washing liquid.
a) Remove the seal wash tubing from the detector.
Fig. 35: Tubing connection on the seal wash detector
b) Draw seal-washing liquid into a syringe at the open end of the tubing. Press the lever
of the peristaltic pump to the left so that the liquid can easily pass the system.
2. Remove some of the liquid by shaking the tube.
3. Set the flow rate. Arrange the system in such a way that approximately 30 MPa of
backpressure is generated.
4. To evaluate possible leakage, observe the air/liquid level in the silicone tube. The
observation must be finished before a new seal wash cycle starts.

If the level remains unchanged, the piston seals seal tightly. Proceed with the next step.

A rising level indicates leakage from one or more piston seals. Follow these steps:
a) On the right pump head, remove the seal wash tubing connecting the left pump
head to the right pump head.
b) Repeat the observation.
c) If the level rises again, replace the piston seals in the left pump head (

page 135)
and repeat the test starting with step 1. If the level does not rise, replace the piston
seals in the right pump head and repeat the test starting with step 1.
d) Reconnect the seal wash tubing to the right pump head.
5. Reconnect the seal wash tubing to the detector.
Be sure to connect the tubing to the
inner port (

Fig. 35). The outer port has no
function.
Tip: If leakage from a pump head is observed, check also the tubing connected to
the rear seal wash system. If the seal wash tubing is not connected properly or
if the tubing is crimped or kinked, the liquid may leak into the pump.
Seal wash tubing
Detector of the
seal wash system