Waters 717plus - Page 149

Troubleshooting Tables 149
6
Autosampler does not
run (fan and front
panel light on)
Autosampler not
connected to
controller
Ensure IEEE cable is properly
connected to controller. Verify that
IEEE-488 addresses (if IEEE-488
communication is in use) are properly
set.
• If properly connected and IEEE-488
addresses are correct, turn off the
autosampler and controller and
disconnect the cable. Turn on the
autosampler and verify that it is
calibrated and operates under its
own control.
• If autosampler operates properly,
refer to the controller operator’s
manual for troubleshooting
information.
Autosampler does not
run (fan and front
panel light on)
Power failure Reset the autosampler and resume
operation.
Sample compartment
door opened
Close sample compartment door. If
problem continues, contact Waters.
Sample carriage error Contact Waters.
Defective circuit board Contact Waters.
Leak from fluid system
(needle, injector, seal
pak, fluid pack)
Loose or overtight-
ened compression
fitting
Verify fittings and ferrules for
under/overtightening and wear.
Replace if necessary.
Defective valve seals Test valves (Section 6.4.2, Valve Leak
Tes t) and replace as required (call
Waters).
Defective seal pak Replace seal pak (call Waters).
Defective fluid pack Replace fluid pack (call Waters).
Damaged needle Purge the autosampler to unplug the
needle. If problem continues, replace
the needle assembly and seal pak (call
Waters).
Blocked or damaged
syringe
Replace syringe (see Section 5.2,
Replacing the Syringe).
Table 6-8 Autosampler Troubleshooting (Continued)
Symptom Possible Cause Corrective Action