Thermo Scientific Orion 2111LL User Manual page 80

Yearly Preventive
Maintenance
Electrodes
Flow Cell
Flow Cell Assembly
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
1 . . Replace .Orion .ROSS .Ultra® .reference .electrode .(Cat . .No . .210058) . .
Refer .to .Chapter II, Instrument Preparation .for .step-by-step .
instructions .
2 . . Replace .Orion .ROSS® .sensing .electrode .(Cat . .No . .210048) . .Refer .to .
Chapter II, Instrument Preparation .for .step-by-step .instructions .
3 . . Replace .calibration .and .etching .solution .(Cat . .No . .181140)
Dispose .of .all .old .solutions .according .to .MSDS .instruction . . .MSDS .can .be .
downloaded .at .www .thermo .com/water .
Using .the .flow .cell .O-ring .kit .from .the .Orion .annual .maintenance .kit . .
(Cat . .No . .2111MK) . . .Refer .to .Figure V-3 for .O-ring .location . .
1 . . Follow .shut .down .procedure .to .stop .sample .flow .to .monitor . . .Refer .to .
Chapter III, Shutdown Procedure .
2 . . Remove .electrodes .and .ATC .from .flow .cell .cap . .
3 . . Drain .flow .cell .completely .
4 . . Remove .flow .cell .cap . . .Replace .large .O-ring .in .flow .cell .cap . .
5 . . Pull .flow .cell .chamber .straight .up .to .remove .from .flow .cell .base . . .Be .
careful .not .to .twist . . . T he .flow .cell .base .has .a .pin .to .hold .the .flow .cell .
chamber .in .the .correct .position .
6 . . Rinse .flow .cell .chamber .with .de-ionized .water .
7 . . Remove .sensing .tube .by .pulling .vertical .from .flow .cell .base .
8 . . Replace .sensing .tube .O-ring .in .base .and .install .new .sensing .tube .to .
original .location .
9 . . Replace .large .O-ring .in .flow .cell .base .
10 . .Install .flow .cell .chamber . . .Line .up .pinhole .in .chamber .to .pin .in .flow .
cell .block . . . .Push .straight .down . . .Do .not .twist .
11 . .Replace .flow .cell .cap .on .flow .cell .chamber .
12 . .Re-install .electrodes .and .ATC .according .to .their .port .locations . .
13 . .Follow .start .up .procedure .to .return .sample .flow .to .instrument . .Refer .to .
Chapter III, Shutdown Procedure .
Figure V-3
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Instrument Maintenance
V-5