Waters 717plus - Page 153

Troubleshooting Tables 153
6
Incorrect sample
volume injected
(continued)
Sample too viscous Dilute sample or decrease syringe
draw speed rate.
Vacuum created in vial Make injections without a cap in place,
remove excess sample from the vial, or
loosen cap on the self-sealing septum.
Vials repeatedly break Incorrect vials being
used
Use Waters vials.
Incorrect caps being
used
Use Waters caps.
Caps not put on
properly
Ensure that caps are on properly.
Needle or injector
malfunction
Call Waters.
Misaligned sample
transport system
Call Waters.
Needle bent Solid cap not removed
from sample vial
Remove sample vial cap and replace
with a septum and cap.
Replace the autosampler needle.
Incorrect vials being
used
Use Waters recommended vials.
Replace the autosampler needle.
Septum too resistant Ensure that only one septum is being
used at a time.
Replace the autosampler needle (see
autosampler service manual).
Misaligned sample
transport system
Call Waters.
Heater/cooler fails to
reach the set point
Frost prevents cooling Defrost sample compartment.
Exterior or sample
compartment fans not
working
Replace fan (call Waters).
Fan filter dirty Clean fan filter.
Insufficient air flow Ensure sufficient space behind
autosampler (see Section 2.1, Site
Requirements).
Table 6-8 Autosampler Troubleshooting (Continued)
Symptom Possible Cause Corrective Action