Maintaining The Analyzer - Siemens SIPROCESS GA700 Kompaktbetriebsanleitung

Service and maintenance

8.3 Maintaining the analyzer

Maintenance during ongoing operation in a hazardous area
There is a danger of explosion when carrying out repairs and maintenance on the device in
a hazardous area.
• Isolate the device from power.
• Alternatively: Make sure that the atmosphere is explosion-free (hot work permit).
• Wait 10 minutes after disconnecting the power supply before you open all doors and
Dust layers above 5 mm
Danger of explosion in hazardous areas.
A dust deposit with a thickness exceeding 5 mm can lead to overheating of the device and
as a consequence to explosion.
• Remove any dust layers in excess of 5 mm.
8.3 Maintaining the analyzer
After repair have the device checked by an Ex specialist before the device is put back into
operation. The Ex specialist determines whether the analyzer has the essential features and
meets the requirements for explosion protection and issues a certificate to this effect and/or
has attached a test symbol to the equipment.
Check the device annually for electrical safety and functionality as well as leakage of the
sample gas path within the device.
Check the device following each intervention in the gas path (containment system) for leaks.
The leak test is described in the section "Checking gas paths for leaks (Page 66)".
The owner can extend maintenance intervals in individual cases if no negative effects can be
expected on wetted parts materials (gaskets in particular).
Further information on maintenance can be found in the associated operating instructions,
see "References (Page 117)".
90
WARNING
covers.
WARNING
Devices in explosion-proof design
Compact Operating Instructions, 11/2019, A5E35134047-04