Amersham Pharmacia Biotech M-925 Anleitung Handbuch - Seite 4

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5 Trouble shooting

If the suggested actions do not correct the

fault, call Amersham Pharmacia Biotech.

Fault

Action

Leakage

1 Check the tubing and connectors.

If leakage is located to the mixer

chamber, replace the complete

chamber.

Waves on the gradient

1 Check that the pump is operating

and is programmed correctly.

2 Clean the mixing chamber to make

sure it is free of dirt or particles.

3 Change to a larger mixing chamber

volume if necessary.

4 Run the mixer test from

UNICORN™ to determine the

working status of the mixer. If the

test failed, contact Amersham

Pharmacia Biotech.

Unlinear gradients or slow response to

%B changes

1 Check that the tubing has been

washed properly and that the pump

is operating.

2 Change to a smaller mixer volume.

Not running

1 Check cables.

2 Check Setup menu on the pump.

Other faults

Contact Amersham Pharmacia

Biotech.

Reference information

Description

A mixer motor

inside the housing

spins a magnet at

600 rpm, that

causes the stirrer

in the mixing

chamber to rotate.

The eluents are mixed in two steps:

1 Premixing in a static mixer with a small

volume (22 µl).

2 Dynamic mixing chamber with rotating

stirrer.

The mixer housing and the mixer chamber

contains no user replaceable items.

0 0 , , 6 6

M -

9 2

Mixer M-925

Instructions 56-8101-00 Edition AC