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SECTION 6—PREVENTIVE MAINTENANCE

Part No 1148070 25 Perfecto

™

Replacing the Outlet HEPA Filter

Check the Outlet HEPA Filter

NOTE:TheoutletHEPAfiltercanbecheckedbyperformingthefollowingprocedure.

1. Turntheconcentratoronandadjusttheflowmetertothemaximumflowoftheunit.

2. Observetheflowmeterʹsflowindicatorwhileconnectingafiftyfootcannulatubeto

theoutletbarboftheconcentrator(notshown).

3. Iftheflowindicatorfluctuates,theoutletHEPAfiltermayneedreplacement.Referto

Troubleshootingonpage 16.

Replace the Outlet HEPA Filter

NOTE:Forthisprocedure,refertoFIGURE 6.2.

NOTE:PerformthisprocedureasneededdependingontheoutletHEPAfiltercheckresults.

1. Unplugtheunit.

2. Removethecabinet.RefertoRemovingCabinetonpage 23

3. Foreasieraccesstotheoutlethepafilter,removethecompressorinlethepafilterby

graspingthecompressorinletfilter,pulloutwardandupuntilfilterisdislodgedfrom

rubberbase(FIGURE 6.3).

4. Withaflatheadscrewdriver,removethetubingfrombothsidesoftheexistingoutlet

HEPAfilterbypryingthetubingawayfromtheoutletHEPAfilter.

5. DiscardexistingoutletHEPAfilter.

6. ConnecttubingtobothsidesofthenewoutletHEPAfilterasshownbelow.

7. Installcabinet.RefertoRemovingCabinetonpage 23.

FIGURE 6.2 Replace the Outlet HEPA Filter

Tubing

Outlet HEPA Filter

Tubing

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