Global Sentinel, Operating Manual, Page: 43 / 70

Global Power Technologies MAINTENANCE
302842 Rev0 | Sentinel Page 36 of 61
Figure 24 – Sentinel Net Power vs. Days of Operation
Before performing any service or maintenance on the Sentinel TEG:

Shut down the unit by closing the manual shut-off valve below the regulator

De-classify the area ensuring that there is no explosive gas present before and during service
or maintenance activities.

De-energize the system by disconnecting the wiring connector from the start-up battery
pack.

Allow the unit to cool for at least one hour before beginning any service or maintenance
activity.
WARNING!
Ensure that no explosive gas hazard is present prior to opening the instrumentation
enclosure and performing any service on the Sentinel TEG. The Sentinel enclosure
must not be opened when an explosion or gas hazard may be present.
5.2 FUEL SYSTEM MAINTENANCE
5.2.1 FUEL FILTER MAINTENANCE AND CARTRIDGE REPLACEMENT
The Sentinel TEG is equipped with a natural gas scrubbing system to help eliminate contaminants in
the fuel supply. To ensure maximum efficiency and longer appliance life, replace the filter cartridges
(two of GPT# 302623) once every year.