DAILY MAINTENANCE (Performed by user)
1. Checking IC Reagent In The IC Reaction Vessel:
Make sure that the IC reagent level in the IC reaction vessel is at the lower branch of the IC reagent drain tube. If not,
then IC reagent should be regenerated by clicking on the Instrument tab in the sample table editor (in connect mode),
select Maintenance -> Maintenance ->Regeneration of the IC solution. Make sure that the reagent in the vessel is
bubbling/sparging. If it isn’t then a leak has occurred somewhere; shutdown the instrument via proper procedures and
contact the Lab Manager immediately.
2. Checking Drain Vessel Water Level (Bottle #4):
Verify that the drain vessel inside the instrument is within 10 mm of the overflow tube on the side of the drain vessel.
Replenish with DI water. Check tubing! Once running, check that there are no bubbles in the drain port. There
CANNOT be bubbling in this vessel!
3. Checking Lines:
Ensure that no drain lines are pinched or clogged.
Check that line going between IC draw valve to waste is not pinched.
Check that the TC slider waste line is sealed and well connected. If it leaks it can go to the motor!
4. Checking Liquid Levels:
All the DI jugs should be rinsed and refilled (not added to) with DI water every day. Make sure that there is enough
orthophosphoric acid (25%) and HCl (2 M) in their respective containers.
5. Checking Acid Blank:
Make sure there is enough acid blank in the acid blank container to run your samples. Acid blank is prepared by
adding 1ml concentrated HCl in 999 ml of DI water.
6. Checking Humidifier Water Level (Bottle #3):
Verify that the water level in the humidifier is above the “Lo” mark. If the level is below the “Lo” mark, replenish by
adding DI water through the water supply port on top of the vessel. Add water until the level reaches the “Hi” mark.
7. Checking Waste Containers:
Before running the samples make sure that both the waste containers (waste water container on the left side of the
machine and acid waste container under the table) are empty. Waste water can be dumped untreated in the sink
whereas the acid waste needs to be treated before dumping it in the sink. Add baking soda or 12-15 pellets of NaOH
in the acid waste to neutralize it before dumping in the sink (use pH paper to make sure the acid is completely
neutralized).
8. Checking Air Tank:
Do not run samples if the air pressure is below 300-400 psi. The second pressure gauge attached to the tank should be
set at 70-80 psi.
9. Checking Air Flow:
TOC: Carrier gas pressure gauge – 200 kPa; Carrier gas flow meter – 150 mL/min
TNM: Ozone air source flow meter – 0.5 µL/min
10. Washing up spills – use baking soda solution as needed to clean up exterior, table, and interior.
11. Monitor your data:
If zeros are occurring then something could be wrong with the instrument. Go back to #1 and #2 and ensure the
instrument is performing correctly.
12. Needle stuck in vial? Go to Instrument ->Maintenance->Mechanical Check. Let it start up and then just hit
“OK”. The needle will have returned to its ready state out of the vial. DO NOT REMOVE THE
AUTOSAMPLE WITHOUT ENSURING THE NEEDLE IS OUT OF THE VIAL!!