Genevac HT-8 & HT-12 Series II Evaporating Systems
04-4541 Issue 1-9 – June 2008 Page 39 of 64
6 Getting the best from your system
6.1 Routine Checks
For high boiling point solvents such as DMSO, NMP,
DMF and DMI the best evaporation rates will only be
achieved at pressures better than 0.5 mbar.
Check all clamped joints on a regular basis to ensure
that they are secure.
Always ensure that the condenser pots are drained
before every run.
Flush the condenser pots with a suitable solvent at
regular intervals.
Check the catch pot connected to the pump exhaust
on a regular basis and drain as necessary
Never pump a heated condenser containing traces of
liquid DMF, DMSO or NMP, as this will contaminate
the pump oil.
With the CVP pump check the oil level initially on a
daily basis until a usage pattern has been
established and then once weekly (CVP Only).
Ensure that the oil level is within the notch on the
dipstick and no lower than the middle of the notch
(CVP Only).
Keep a weekly log of the time taken for your system
to reach full vacuum, as this data will give you an
indication of seal ageing and wear.
With high boiling point solvents, it is advantageous to
pre-heat aluminium sample holders before
commencing a run to increase evaporation speed.
Use the link run facility when evaporating solvent
mixtures with large differences in boiling point (refer
to 6.3 Optimising a run).
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