Thermo Scientific Dionex AutoTrace 280, Operator'S Manual

Page: 83 / 166

4 • Troubleshooting
Doc. 065330-05 03/2020
75
7. Incorrect volume
removed from the
sample container. 7a. Samples with large
amounts of suspended solids. 7a. Increase the sample volume
specified in the
Load Sample
step by 5% to 7%. For example,
specify 1050 mL instead of
1000 mL.
–or–
Filter the sample, collect the
filtrate, and place this in the
sample container.
7b. Sample pump is out of
calibration. 7b. Perform a Clean Sample
Path step with deionized water,
and then run the Calibrate Pump
diagnostic method (see
Section 4.2 ).
7c. Fittings are loose at the
sample pump. 7c. Tighten the fittings.
7d. Sample pump is leaking. 7d. Clean the pump cylinder and
piston (see
Section 5.9 ).
8. Uneven volumes in
elution containers. For
example, 10 mL is
expected, but one
container has 8 mL and
the other has 12 mL. 8. Loose fitting at 12-port
valve or switching valve. 8. Make sure valve fittings are
securely finger-tight. If
tightening a fitting does not stop
a leak, replace the fitting (see
Section 5.1 ).
Symptom Probable Cause Solution