Thermo Scientific EA IsoLink IRMS System Operating Manual page 154

7
Maintenance
Current Maintenance Program
Figure 137. Graphite Crucible Removal
1. Cool the furnace to a temperature below 600 °C.
2. Put the ConFlo in standby or close needle valve to IRMS.
3. After reaching the temperature switch Off the flow of helium. Wait approximately five minutes to
depressurize the system.
4. Remove the autosampler.
5. Carefully remove the graphite tube (for example with a pair of tweezers), see A of
place it on a clean cloth.
6. Insert the crucible remover inside the graphite crucible. See B in
7. Pull the graphite crucible out of the reactor. See C in
8. Drop a new graphite crucible into the reactor, or remove the deposits outside and inside of the
graphite crucible and use it again.
9. Remount the parts proceeding in the reverse order.

Maintenance measures for pyrolysis unit
To facilitate proper work, adhere to the described maintenance recommendations and procedures.
This will also increases the life time of the pyrolysis reactor and the furnace heater.
126 EA IsoLink IRMS System for CNSOH Operating Manual
Graphite Tube
Graphite Crucible
A
Crucible Remover Tool
B
Figure
Figure 137.
C
Figure 137, and
137.
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