Bio-Rad BioLogic Signal Import Module (SIM) - Manual (Page 194)

MAINTENANCE MAINTENANCE AND TROUBLESHOOTING
11-1
11.0 MAINTENANCE
The BioLogic DuoFlow system requires minimal maintenance to assure reliable operation.
Note: Maintenance of the QuadTec UV/Vis detector and the Econo Gradient Pump (EGP) is discussed
in their separate documentation.
11.1 CARE OF THE OUTER SURFACES OF THE INSTRUMENTS
During normal operation, spills and splashes may cause residues to form on the component cases.
To clean the case of an instrument, first unplug the instrument. Use a damp cloth to wipe down the outer
case. Avoid wetting the power switch located below the front panel and the connectors on the rear of the
unit.
The system rack tray should be mopped up and any residues rinsed away with water via the drain.
11.2 STORAGE OF THE DUOFLOW SYSTEM
For overnight storage, please note the following:
1. The system tolerates low salt buffer overnight, but sample and high salt buffers need to be washed
out of the tubing.
2. Use deionizied (DI) water and the 10mL syringe provided in the Fittings kit to wash behind each
pumphead with at least 10 ml of water. This applies to both the F10 and F40 pumps.
3. If the system is in a cold environment, keep it powered on to prevent condensation. If it is at room
temperature, it may be left off or on. (When it is at room temperature, the DuoFlow Controller
(computer and monitor) can be turned off, to conserve energy and prolong monitor life.)
4. Thoroughly flush all valves with water, especially the Maximizer valves and the SVT3-2 and SV5-4
solenoid valves.
For long-term storage, please observe the following precautions:
1. Follow the column manufacturer’s instructions to clean and store the column. Remove the column
from inline.
2. Run deionizied (DI) water through the entire system. Be sure to wash all wetted parts of both the
Maximizer valves and the solenoid and automated valves to remove any contaminants.
Note: It is particularly important to wash out the Maximizer valves and the SVT3-2 and SV5-4
valves. Failure to do so may result in valve failure.
3. Use deionizied (DI) water and the 10 ml syringe provided in the Fittings kit to wash behind each
pumphead with at least 10 ml of water. This applies to both the F10 and F40 pumps.
4. Fill the entire system with either 20% ethanol (EtOH) or 0.05% sodium azide to inhibit bacterial
growth. If necessary, fit the pump inlets, UV detectors and conductivity monitors, and all solenoid
valves with 1/4-28 plugs which are provided in the Fittings kit.