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810-1734-00 Rev A
GAS-Guard 8 and GAS-Guard 3 Operations and Maintenance Guide
Operation
Once installed, the Siemens GAS-Guard requires very little setup before operation commences. To
retrieve DGA data from the GAS-Guard, set caution/alarm levels, sampling schedules etc. use either
GAS-Guard View software or the Serveron Monitoring Service (SMS). Refer to the GAS-Guard View
Software User's Manual or the SMS User's Guide. For more information, manuals are available for
download from
www.serveron.com
or by contacting Technical Support at support@serveron.com.
Calibration
Every Siemens GAS-Guard is calibrated at the factory. Following installation and commissioning, the
GAS-Guard's auto-calibration feature verifies calibration automatically every three days. Siemens
recommends confirming calibration of your GAS-Guard every six months by viewing the 'Verification
PPM in Gas' graph in GAS-Guard View (Graph Tools→Maintenance→Verification Data). A manual
recalibration should not be required unless a new certified verification cylinder is installed,
approximately once every three years. If Siemens has connectivity to the GAS-Guard during the
standard warranty period (12-months from date of shipment) Siemens will periodically confirm
calibration of the GAS-Guard as well.
Note: For Serveron Monitoring Service customers, upon installing a new verification
cylinder fill out and return the Verification Cylinder Datasheet located at the end of this
document and return it to Technical Support.
Alarm Settings
Following installation of the GAS-Guard and after an initial 24 hour stabilization period, the gas
caution and alarm levels can be set in the GAS-Guard. These levels can be set using the GAS-Guard
View software which was included with your GAS-Guard or by the Serveron Monitoring Service.
There are no universal rules regarding the values at which to set the caution and alarm levels in the
GAS-Guard. In the most general case caution and alarm settings are disabled while the
GAS-Guard runs for approximately thirty (30) days to establish gassing trends and a baseline PPM
level for each of the fault gases. After the GAS-Guard PPM data has been established, you can use the
history to set the caution and alarm levels directly or consult with the support group at
support@serveron.com
to determine the appropriate caution and alarm settings for your GAS-Guard.
The following guidelines may be useful for setting the initial gas caution and alarm levels. Keep in
mind that these are recommendations. The appropriate caution and alarm settings for your
GAS-Guard may vary from these recommendations.
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