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CHAPTER 3 Maintenance, checks & shutdown 35
C H A P T E R 3
Maintenance, checks & shutdown
Maintenance
In this paragraph all maintenance is described which can be performed by
the end-user, all other maintenance & service procedures may only be per-
formed by authorized service engineers only.
Periodic check for leakage
Perform leak checks on LC tubing, flow cells and connections on a daily
basis and check if the drain on the bottom of the oven compartment is not
blocked or closed. Do not allow flammable and/or toxic solvents to accu-
mulate. Follow a regulated, approved waste disposal program. Empty and
clean waste container regularly. Never dispose of such products through
the municipal sewage system. Check daily that the mobile phase bottles
contain enough mobile phase for the number of analysis planned to be
Executed.
Periodic check of the oven temperature
The operator should check/verify on a daily basis if the actual oven tem-
perature is in accordance with the set temperature of the ROXY Exceed.
Flow cell
Check the performance of the potentiostat & flow cell on a daily basis by
evaluating the background current, noise and signal. An increase in back-
ground current, noise and/or loss of reaction conversion efficiency may be
a sign of contamination of the working electrode (WE). Detailed infor-
mation about flow cell maintenance instructions are described in the user
manual supplied with the specific flow cell (ReactorCell, µ-PrepCell etc.)
purchased in combination with your potentiostat.
In case the actual temperature exceeds 70°C switch off the potentiostat
immediately do not touch the metal parts inside the oven compartment
because they could be hot, and contact the manufacturer or its
representatives for service. Do not use/switch on the instrument before
the instrument is serviced at the factory.