ABB SCC-K, Руководство оператора

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12 SCC-K NO
2
/ NO Converter Operator’s Manual 42/23-52 EN Rev. 2
Chapter 2 Maintenance
Preface
CAUTION!
Before carrying out maintenance work, make sure that safety measures
specific to the installation and process are complied with!
CAUTION!
Dangerous voltage. Remove mains plug before opening the converter’s
housing!
Maintenance Periods The SCC-K converter does not need special maintenance periods.
Determining the Catalyst Service Life
Catalyst Service Life The catalyst service life depends essentially on the following factors:
•
Sample gas flow rate
•
Temperature
•
NO
2
concentration in the sample gas
•
O
2
concentration in the sample gas
The catalyst service life is > 6 months for 30 l/h, 320 °C, 10 ppm NO
2
and
5 Vol.-% O
2
.
During the stated service life, conversion is over 95 %. If the degree of efficiency
falls notably below 95 %, the used catalyst cartridge should be replaced (see
page 13).
Adverse conditions in the installation can lead to a substantially shorter catalyst
service life!