Replacing Fuses - Waters 2410 Operator's Manual

6. Switch the pump or solvent delivery system to the cleaning solvent. Flush for 6
to 10 minutes. Use a clean waste container when pumping cleaning solvent. Do
not mix acidic and organic waste.
7. Switch the pump or solvent delivery system back to HPLC-grade water. Flush
until the pH of the waste effluent is neutral (a pH value of 6.0 to 7.0).
Note: If you use 6 N nitric acid, do so with care. If you operate the 2410
refractometer at high sensitivities, you may need to flush the system extensively with
water to remove all traces of the nitric acid.
8. Switch the pump or solvent delivery system back to the water-miscible
intermediate solvent. Flush for 10 minutes.
9. Switch the pump or solvent delivery system back to the mobile phase. Flush for
5 minutes.
10. Take the 2410 differential refractometer out of Purge mode and stop the pump or
solvent delivery system.
11. Reattach the column and reequilibrate the 2410 refractometer.

6.2 Replacing Fuses

This section describes replacing fuses in the 2410 differential refractometer.
Required Materials
Flat-blade screwdriver
Identifying a Faulty Fuse
A faulty fuse usually has a smoked glass area or broken filament. If no break is visible, you
can remove the fuse and test it with an ohmmeter.
Suspect a faulty fuse if:
• The 2410 differential refractometer fails to power on.
• The display is blank.
• The fan does not turn on.
For more information on detecting the cause of a blown fuse, refer to Section 7.3,
Hardware Troubleshooting.
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