TOCII CA72TOC Maintenance
Endress+Hauser 59
7.1 Cleaning the housing
"
Caution!
When cleaning, make sure you do not damage the nameplate on the analyzer! Do not use cleaning
agents containing solvents!
Clean the analyzer housing as follows:
• Use fluoride-free cleaner and a lint-free cloth.
7.2 Visual inspection
#
Warning!
There is a risk of infection when working with wastewater! For this reason, wear protective goggles,
protective gloves and protective clothing.
#
Warning!
Contact with hot parts near the combustion furnace may cause injury! For this reason, wear
heat-resistant gloves.
Carry out the visual inspection at least once a week:
• Check the time and date of the analyzer.
• Check whether the measurement is operating in the standard range.
• Is the sample supply OK? To check, hold a collecting vessel under the valve and set the valve
briefly to "Manual sample". Does the sample flow out of the bypass?
• Is sample being dosed into the furnace?
• Are hoses P1 to P3 (optionally P4) leak-tight?
• Is sufficient C1 and C2 standard still available?
• Is sufficient stripping acid still available?
• Check the gas supply.
Cylinder pressure regulator at 2 bar (29 psi)?
Circuit gas (right flowmeter) at 0.7 to 1.2 l/min (0.18 to 0.32 gal/min)?
• Is the water supply pressure at 3 ±0.2 bar (43 ±3 psi)?
• Is the acid filter free of condensate and not severely discolored?
• Check stripping gas bubbling.
• Does the rotating slit filter rotate uniformly?
• Is a slit visible between the rotating slit filter and the housing?
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Fig. 31: Rotating slit filter
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Fig. 32: Rotating slit filter, detailed view
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