Environmental Express AutoBlock II - Manual (Page 30)

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Options Menu
6.4 Options
This section allows the analyst to change the AutoBlock from a single pump
system, to a dual pump system. Click the appropriate box.
“Vent problem Aborts Operations” the AutoBlock is equipped with a pressure
sensor that detects an increase in pressure when either the door is opened or the
exhaust system fails. When this box is clicked, digestion methods are aborted
when the pressure sensor detects one of these parameters.
Low Fan Speed- during a digestion, the exhaust system lowers the fan speed to
achieve acceptable temperature uniformity. If condensation occurs during a
digestion increase the percentage of the fan speed. This should be performed
using DI water with 54-Samples prior to sample digestion with acids.
Routine Cleaning
General maintenance should include a thorough cleaning of all interior plastic
parts with a soft damp cloth to remove acid buildup and other contaminates that
will form deposits over time. Exterior cleaning should be performed on an as-
needed basis. The more frequently your AutoBlock is cleaned of residual acid,
dust and other buildup, the less chance of sample contamination you will face.