TROUBLESHOOTING
Chapter 7
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Sievers TOC-R3 Operation and Maintenance Manual
DLM 95000-01 EN Rev. A 221 © Veolia 2023
7. If the “Rinse Reactor” process does not clear the restriction, a few steps can be taken
to determine the restricted area, which include inspecting/cleaning of the Injection
Needle, inspecting/cleaning the Furnace Foot Assembly and its components, and/or
inspecting/replacing the Furnace Ceramic Packing inside the Furnace Cartridge.
• Inspect the Injection Needle. Clean or replace, if necessary. Turn the Furnace
Off and allow to cool completely before performing this task. Before
performing maintenance on or near the Furnace, put on appropriate PPE.
For more information, see “To Access the Furnace Head Assembly” on page 200.
• Inspect the Furnace Foot. Clean or replace, if necessary. Turn the Furnace Off
and allow to cool completely before performing this task. Before performing
maintenance on or near the Furnace, put on appropriate PPE. Check to see if
there are any solid contaminants or salts in the Furnace Foot Assembly. For more
information, see “To Access the Furnace Foot Assembly” on page 210.
• Inspect the bottom of the Furnace Cartridge for any contamination inside the
Furnace. IMPORTANT! Use a mirror or camera to inspect the bottom of the
Furnace while the Furnace Foot is off. For more information, see “Furnace
Cartridge” on page 205.
When Pressure Reactor Increase is Observed
A quick test is to remove the Transfer Tube fitting that runs from the Furnace Foot to the
Gas Cooler Unit. If the “Pressure Reactor” Sensor reading does not change (on the Menu
→ Service → Sensors screen), then this indicates a restriction between the Furnace
Foot and the Injection Block. If the “Pressure Reactor” Sensor reading drops after
removing the Transfer Tube fitting, then there is a restriction along the Carrier Gas flow
path from the Furnace Foot to the NDIR. IMPORTANT — Turn the Furnace Off and
allow to cool completely before performing this task. Before performing
maintenance on or near the Furnace, put on appropriate PPE.
MFSV Not Draining
If the Multi-Function Sample Vessel (MFSV) is not draining properly, check the Y9 Valve
right below it. Inspect the pinch tubing inside the Y9 Valve, it may be stuck shut.
Caution
Do not look directly into the bottom of the Furnace. Small particles could
potentially escape the Furnace and enter the eye. Use a mirror or camera
to inspect the bottom of the Furnace while the Furnace Foot is off.
If the Furnace is On, the Furnace Foot Assembly will be very hot. Use
gloves that offer thermal protection from hot parts.
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