Buchi SpeedExtractor E-914, Operation Manual

Page: 62 / 107

7 Maintenance
61
SpeedExtractor E-916 / E-916XL / E-914 Operation Manual
7 Maintenance
This chapter provides instructions on all required maintenance to keep the instrument in good working
condition.
!
WARNING
Death or serious burns by electric current at cleaning.
•
Switch off the instrument
• Disconnect the power cord and prevent unintentional restart
• Wait until the instrument is completely dry before reconnecting the power supply
NOTICE
Risk of housing and instrument damage by liquids and detergents.
•
Do not spill liquids over the instrument or parts of it
• Wipe off any liquids instantly
• Use ethanol or soapy water as detergent only
7.1 Daily maintenance
Daily maintenance can prolong the system lifetime, reduce costs of service and downtime.
• Fill the solvent reservoirs according to section 6.2.1. Make sure that the filter is always completely
dipped into the solvent.
• Empty the waste bottle, if needed.
• Inspect the cup seals for visual damage or contamination by sand or dust. If necessary, replace
the seals according to section 7.2.1. Always perform a leak test after replacing the seals (see sec-
tion 6.2.5).
• Check the nitrogen pressure (6 – 10 bar).
• Check the septa of the collection vials.
• Inspect the needles for septa residue and/or deformation.
Cleaning the seals
• If necessary, rinse the seals with organic solvent (e.g. ethanol) with the help of beaker. Always
visually inspect the seals for dust, sand or scratches.
NOTE
Never clean the cup seals with a wet towel or wipe. Any kind of residue might cause a leak and/or
reduce the lifetime of the cup seals.
Cleaning the upper cup seal frit
• In case of unexpected contamination, remove the top cover plate (position 4 on page 95) and
clean it in an ultrasound bath.
Flushing the lines
• If the next extraction method involves a different type of solvent, flush the lines thoroughly with the
new solvent as described in section 6.2.6.