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7. Usinga½inch/13mmA/Fopenendedspanner,unscrewthetworetainingnutsandremovethe
Standard Weather Protection.
8. InspecttheStandardWeatherProtectionfordamageorbuildupofdebris/contaminants.Ifrequired,
clean or replace weather protection.
9. Inspect the Dust Barrier and clean or replace if required.
10. Remove the Dust Barrier and inspect the optics.
11. Clean any dust or contaminants from the optics using mild detergent and a soft cloth or cotton bud.
Do not use solvents or abrasive cleaners.
12. Replace the Dust Barrier and Standard Weather Protection.
13. Select Device Reset to clear any faults or warnings that may have been generated by cleaning.
14. Press OK to initiate a Device Reset.
Note:Ifanycongurationchangeshavebeenmade,wait15secondsbeforedoingasoftresetorcycling
the power.
15.Thedisplayshowsaconrmationmessage.PressOK.
16. The display shows a note that the Searchpoint Optima Plus will return to normal operation,
press OK.
17. Select Inhibit.
18.SelectEnd Inhibit and press Enter.
19.Thedisplayshowsaconrmationmessage.PressOK to release the 4-20 mA output.
20. Return to the Welcome screen.
13.3 Inspection of a unit tted with a Flow Housing
Searchpoint Optima Plus should be inspected periodically and cleaned if necessary. The required frequency
of inspection will depend on local site conditions and will need to be established through experience.
Caution: Gas readings may be generated during this procedure. Follow the steps to inhibit the
4-20 mA output. Ensure that the unit is not left in Inhibit mode.
1. Select Device Setup.
2. Select Test.
3. Select Inhibit.
4. Select Start Inhibit and press Enter.
5. Thedisplayshowsaconrmationmessage.PressOK. The 4-20 mA output is now inhibited.
6. Inspect the Searchpoint Optima Plus unit, its junction box and cabling for any signs of physical damage.
7. Disconnectanypipeworkattachedtotheowhousing.
8. Usinga½inch/13mmA/Fopenendedspanner,removethetwoblacknutswhichretaintheow
housing.KeeptheO-ringsealswhicharebelowtheretainingnuts.
9. SlidetheowhousingofftheSearchpointOptimaPlus.Thismayrequiresomeforceduetothefriction
of the O-ring.
10. Clean any dust or contaminants from the optics using mild detergent and a soft cloth or cotton bud.
Do not use solvents or abrasive cleaners.
13. Maintenance using HART
®
Communications