Siemens ULTRAMAT 23, Manual, Page: 168 / 244

Service and maintenance
10.2 Maintenance work
ULTRAMAT 23
168
Manual, 3/2016, A5E37100388-003
Cleaning the interior
After opening the device, you can blow out the interior carefully with a compressed air gun, if
necessary.
10.2.2 Maintenance of the gas path
Depending on the corrosivity of the sample gas, check the state of the gas path at regular
intervals.
Servicing may be necessary.
10.2.3 Replacing spare parts
CAUTION
Incorrect fitting of replacement parts
Special work is required when replacing parts, especially on the analyzer unit, which can
only be carried out at CSC Haguenau or by qualified, specially trained personnel.
Incorrect interventions can result in a reduction in measuring accuracy or malfunctioning of
the analyzer.
To maintain the measuring accuracy of the ULTRAMAT 23, it may be necessary to carry out
a temperature compensation following the replacement of certain parts. Parts to which this
statement apply are identified in the spare parts list (see (Page 185)) by "*".
This particularly applies if brief temperature fluctuations > 5 °C (9 °F) occur at the installation
location. This temperature dependence will not occur if you use an "AUTOCAL" cyclic zero
point adjustment of e.g. 3 hours.
We recommend having temperature compensation performed at CSC Haguenau.
10.2.4 Replacing fuses
DANGER
Explosion hazard
If a flammable or ignitable atmosphere exists, plugs must never be disconnected or
lamps/fuses replaced when the analyzer is supplied with power.
• Make sure when replacing fuses that an explosive atmosphere is not present (fire
permit)!