
VI-8
Troubleshooting
Thermo Scientific Orion 2111LL Sodium Monitor User Guide
ROSS and the COIL tradedress are trademarks of Thermo Fisher Scientific Inc. US Patent 6,793,787
A .hard .reset .should .be .performed .if .the .unit .becomes .unresponsive .or .the .
status .indicators .are .flashing . . .Perform .the .following .sequence: .
• . Carefully .open .front .cover .of .electronics .case .(loosen .4 .corner .screws) .
• . Press .small .button .located .on .raised .portion .of .PCB .to .reset .electronics . .
• . Close .front .cover .of .electronics .case .and .tighten .the .screws .
System .settings .and .calibrations .are .preserved .and .instrument .returns .to .
the .measure .mode . . .Actual .values .for .concentration .and .temperature .will .
be .displayed .if .electrodes .are .properly .installed . . .If .system .does .not .reset, .
contact .Call .Customer .Support .for .Orion .products .at .1-800-225-1480 . .
for .assistance .
In .the .event .you .require .technical .assistance, .please .have .the .serial .number .
available .when .calling .for .assistance .along .with .the .software .version .
• . The .monitor .serial .number .is .located .on .the .underside .of .the .
electronics .enclosure .or .if .panel .mounted .then .on .the .backside .of .the .
electronics .enclosure . .
• . The .software .revision .is .accessed .through .the .test .mode .
Hard Reset
Serial Number and
Software Revision
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