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Service and maintenance
10.2 Maintenance work
4. Insert the new filter.
5. Push the condensation trap on again from below.
10.2.7
Replacement of the UV module
Only specially trained personnel are permitted to replace individual components of the UV
module. For this reason, only the replacement of the complete UV module is described here.
Improper installation of replacement parts
Special work is required when replacing spare parts, especially on the UV module, which may
only be carried out by a Siemens certified service center or by qualified, specially trained
personnel.
Improper interventions can result in a reduction in measuring accuracy or malfunctioning of
the analyzer.
Before removal, you must ensure that the analyzer no longer contains any sample gas. To ensure
this, purge the analyzer with zero gas (ambient air) for several minutes. Proceed as follows to
remove the UV module (the numbers refer to the position of the components in the figure
below):
Danger of burns
The absorption photometer heats up to temperatures of 60 °C (140 °F) during operation. These
temperatures will result in burns if you touch the module with your bare skin.
•
• Use protective gloves.
1. Disconnect the device from the power supply.
2. Wait for at least 30 seconds so that all capacitors are completely de-energized.
3. Unscrew the two screws of the rear cover and remove the cover by pulling it back.
4. Detach all gas supply lines and plug-in connections from the UV module.
5. Remove the pressure switch from the metal wall of the UV module.
6. Loosen the 4 retaining screws from the foot of the base
that the screw heads fit into the openings. You can now lift up the UV module.
The UV module is installed in the reverse order.
172
CAUTION
CAUTION
Before starting work, ensure that the UV module has cooled off sufficiently.
①
and move the base in such a way
Equipment Manual, 04/2022, A5E37100388-012
ULTRAMAT 23
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