DAD 6.1L/DAD 2.1L/MWD 2.1L user manual V6700, version 3.2
40
Maintenance and Care
Cleaning and Caring for the Device
Flow Cell Cartridge
An important aspect in handling your flow cell cartridge, is that you should
not touch the fiber optic ends with your fingers. Your finger may leave a
thin fat layer on the fiber optic ends, which drastically impairs the flow cell’s
and detector’s performance (see “Possible Problems and Rectifications” on
page 35).
To diagnose this issue, we recommend generating an intensity spectrum
(via your chromatographiy software under Diagnostics). Dirty fiber optic
ends result in little or no UV light (see below).
Surfaces
All smooth surfaces of the device can be cleaned with a mild, commercially
available cleaning solution, or with isopropanol.
Device defect
Intruding liquids can cause damage to the device.
Place solvent bottles next to the device or in a solvent tray.
Moisten the cleaning cloth only slightly.
Checking the Fittings
Check if all fittings are tight. In case you find fittings that are not tight,
tighten them up.
Decommissioning
The detector is designed for the use of different solvents. In case the detec-
tor has not been used for several weeks, solvent residues may cause dam-
age. We, therefore, recommend to:
Flush the flow cell and the capillaries.
Completely remove used solvents.
Fill the flow cell and the capillaries with isopropanol.
Before storage, close the open connectors of the flow cell with hole plugs.
Prerequisites
The detector has been flushed.
Auxiliary Material
hole plugs and/or cap fittings
Capillary Screw Fittings
Torque
Stainless-steel fittings
5 Nm
PEEK fittings
0.5 Nm
