
1100 Series DAD and MWD Reference Manual 127
Repairing the Detector 4
Cleaning or Exchanging the Holmium Oxide Filter
When required If holmium oxide filter is contaminated
Tools required Screwdriver POZI 1 PT3
Screwdriver flat blade
Two 1/4 inch wrenches for capillary connections
A pair of tweezers
Parts required Holmium oxide filter 79880-22711
NOTE
See also “Declaration of Conformity for HOX2 Filter” on page 310.
Preparations for this procedure:
• Turn off the flow.
• Remove the front cover.
• Remove the flow cell, see “Exchanging a Flow Cell” on
page 105.
1 Unscrew the six screws and remove the flow cell cover.
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