7
Maintenance
Current Maintenance Program
Thermo Scientific
EA IsoLink IRMS System for CNSOH Operating Manual
125
Figure 136.
Removal of Ashes and Quartz Wool from the Crucible
2. Rotate the cleaning tool exerting a slight pressure in a way to scrape off the ashes and quartz wool,
then collect the material removed. At the end of the operation, introduce new quartz wool into the
crucible.
Maintaining the Reactor of the Pyrolysis Unit
To clean the reactor
1. Take out the glassy carbon tube.
2. Remove the crucible, silver wool and quartz wool. Empty the granules in a separate bowl.
3. Clean the inside of the glassy carbon tube with the bottle brush.
4. Insert new quartz wool and silver wool.
5. Clean the granules with a tissue or a sieve until they are shiny again.
6. Remove all granules that are not shiny anymore or show a porous surface.
7. Clean the outside of the crucible with a tissue, and remove the molten silver inside or use a new
one.
To clean/replace the graphite crucible
Clean or replace the graphite crucible after approximately
400
analysis, according to sample nature and
samples weight.
Note
Please refer also to the section
“Installing the Reactors into the Furnaces”
.
ATTENTION
The use of gloves is strongly suggested. The graphite crucible is very hot after removal
from the reactor.
