FLOW PATH COMPONENTS
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Sievers TOC-R3 Operation and Maintenance Manual
DLM 95000-01 EN Rev. A 46 © Veolia 2023
When needed for analysis, the CM1 will release the pressure from the CM1 and allow
Carrier Gas to flow through the RM1 (Check Valve) to inject the sample into the Furnace.
CM2 — Multi-Function Sample Vessel
The CM2 (Multi-Function Sample Vessel, also referred to as MFSV) is dedicated to
sample preparation for analysis. To prepare for analysis, Acid and Dilution Water are
directly plumbed/added into the base of the MFSV.
The MFSV contains an internal glass tube called the MFSV Capillary Tube. Both of these
pieces must be cleaned as part of regular maintenance. There is a Capacitive Level
Sensor available for use with the MFSV. If enabled, this Capacitive Level Sensor will
provide feedback if the MFSV is not filled. This sensor is not shown on the Sensors
screen and can only be enabled via the Service level access.
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The MFSV Capillary Tube has two main functions. First is to load the sample into the
MFSV. Second is to set the MFSV volume. The height at which the MFSV Capillary Tube
is set from the bottom of the MFSV is a critical setting that is determined by the
recommended Analytical Method sample matrix and application.
EB1 — Furnace
The EB1 (Furnace) is an electrical heater capable of heating up to 1200 °C (2192 °F).
The current “Furnace Temperature” is shown (in °C) on the Sensors screen.
NOTE: Turning the Furnace “Off” on the Menu → Service → Furnace
Control screen will also turn off the Furnace Temperature Sensor. For more
information, see “Sensors” on page 134.
EC1 — Gas Cooler Unit
The EC1 (Gas Cooler Unit) is a gas-liquid separator that safely cools, condenses, and
removes post-combustion vapor from the Furnace. The Gas Cooler Unit requires about
ten minutes to cool down to temperature after system initialization. The right, Red LED
will illuminate while it is cooling down to temperature. The left, Green LED will illuminate
once the system is at temperature (about 10 minutes). The glass tubes inside this unit are
cleaned as part of regular maintenance.
Pumps
The Analyzer contains the following Pumps. For more information, see “Pump Control” on
page 137.
• GP1 (Sample Pump) — This pump controls the Sample flow within the Analyzer.
The GP1 Pump Tubing is replaced as part of regular maintenance. This pump has
both clockwise direction (CW) and anticlockwise (ACW) pumping.
6. Service level access requires Certified Sievers Technician or next level support.
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