MAINTENANCE
Chapter 6
............
Sievers TOC-R3 Operation and Maintenance Manual
DLM 95000-01 EN Rev. A 195 © Veolia 2023
Soda Lime and Activated Carbon (Air Scrubber)
If using the optional Air Scrubber, the consumables inside the Air Scrubber will require
replacement if the NDIR baseline increases above a set threshold (0.2 x NDIR Upper
Range) or if the color of the Soda Lime granules changes from white to a blue color (if
using Soda Lime with indicator). Both of these symptoms indicate the consumables are
not providing enough CO
2
removal for the Carrier Gas. When required, replace the Soda
Lime granules and the Activated Carbon granules. The Air Scrubber Housing tube is
reusable and does not need to be replaced.
To Replace the Soda Lime and Activated Carbon
1. Prepare the Analyzer for maintenance. For more information, see “Prepare the
Analyzer for Quick Maintenance” on page 183.
2. If using an external air connection, shut off the air source.
3. If using the Optional Air Box, temporarily turn “Off” the Analyzer. This will temporarily
turn off the Air Box. For more information, see “To Shut Down the Analyzer” on
page 98.
4. Disconnect the Inlet and Outlet Carrier Gas Tubing connections on top of the Air
Scrubber Housing.
5. Remove the Air Scrubber Housing from the Mounting Brackets.
6. Open the bottom knurled cap (without tubing ports) to reveal the inside of the Air
Scrubber Housing.
7. Remove the Filter Ring.
8. Dispose of the spent Soda Lime and Activated Carbon granules in accordance with
local guidelines.
9. If needed, wipe down the interior and exterior of the Air Scrubber Housing to remove
any dirt or contaminants.
10. Carefully fill the outer, larger tube with the new Soda Lime granules. Do not over-fill or
compact the granules.
11. Reinstall the Filter Ring to seal the outer tube and contain the new Soda Lime
granules.
12. Carefully pour in the new Activated Carbon granules into the smaller, central tube. Do
not over-fill or compact the granules. If needed, use a small funnel.
13. Carefully replace the knurled cap to be finger-tight.
14. Slot the prepared Air Scrubber Housing into the mounting brackets so that the Inlet
and Outlet ports are oriented on top of the Housing.