Troubleshooting 6
Agilent SPS 4 Autosampler User’s Guide 69
Probing Problems
Probe Arm Jam
A probe arm jam is indicated when the Agilent SPS 4 cannot complete its
instructed move. This could be caused by:
• The probe arm hitting an obstacle or the sample line is restricted while
moving into position.
• The moving components have excessive friction.
• The position of the probe arm has been moved without being driven by
the autosampler (for example, when bumped by a user).
If this happens, check the autosampler by doing the following:
1 Turn the power off and move each axis manually until they stop and
determine if there is any mechanical obstruction preventing full travel.
2 If no mechanical obstruction can be identified turn the unit back on
and allow it to attempt the initialization sequence again.
3 If unsuccessful contact your Agilent customer support representative.
When the Sample Probe Hits an Object
If the sample probe hits an object like a sample rack or sample vial, or it
misses the wash position in the fixed wash reservoir, it may generate
error condition 13 (refer to Table 1) and the autosampler will stop. Check
the following:
1 Check that the probe is straight and mounted tightly to the Z- axis slide.
2 The probe should pass through the center of the accessories plate at
the bottom of the probe arm (see Figure 13).
3 Check that the spill tray and rack location mat are fitted correctly (see
Chapter 3, "Installation" for instructions).
4 Check that sample tubes sit vertically in the sample rack and are not
leaning to one side. If the sample tubes are not suitable for use with
the sample rack, change them to the correct diameter tubes to suit the
sample rack or change to the correct sample rack size.
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