SECTION 14—COOLING FAN
Part No 1148070 55 Perfecto
2
™
SECTION 14—COOLING FAN
Replacing Cooling Fan
DANGER
Topreventelectricalshock,ALWAYSdisconnectconcentratorfromelectricaloutlet
beforeservicing.
NOTE:Forthisprocedure,refertoFIGURE 14.1onpage 57.
1. Unplugunit.
2. Removecabinet.RefertoCabinet
onpage 23.
3. Removecontrolpanel.RefertoRemovingControlPanel
onpage 53.
4. RemovecompressorinletHEPAfilter.RefertoReplacingtheCompressorInletHEPA
Filteronpage 26.
5. Removethethreemountingscrewsthatsecuretheresonatorhousingtothesoundbox.
Twomountingscrewsareinstalledinthetop.Theothermountingscrewislocatedon
thebacksideofthehousingnearthebottom(Detail“A”).
6. Movetheresonatorhousingbackslightlyforaccesstothecoolingfan.Disconnectthe
intakehoseonthecompressorassemblyifnecessary(Detail“A”).
7. Disconnectspadeconnectorsfromfanterminalsonsideofcoolingfan.
NOTE:Thecoolingfanisfastenedtothesoundboxwithfourrubbergrommetsoneachcorner.
8. Liftcoolingfanupanddislodgetherubbergrommetsfromthesoundbox(Detail“B”).
9. Removetherubbergrommetsfromtheexistingcoolingfan(Detail“C”).
10. Notetheorientationoftheinstalledrubbergrommets.Therearetworecessedareas
ontherubbergrommet.Thelargerrecessedareaofthegrommetisinstalledinthefan.
Thesmallerrecessedareaisinstalledinthesound
box.
11. Inspectrubbergrommetsfordamage.Ifdamageisfound,donotuse.Ordernew
rubbergrommetsbeforeinstallingfan.
12. Installrubbergrommetsintonewcoolingfanwithlargerrecessedareainstalledinthe
fan.(Detail“C”).
CAUTION
FanMUSTbepositionedproperlysoairfromthefanblowsDOWNontothecompressor
(seeairflowarrowonbackoffan)ordamagetotheunitwilloccur.
13. Positioncoolingfanontosoundbox(Detail“B).
14. Pullrubbergrommetsdownintothesoundbox.(Detail“D”).
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