Invacare IRC5P Oxygen Equipment User Manual


 
SECTION 20—4-WAY VALVE/MANIFOLD ASSEMBLY
Perfecto
2
68 Part No 1148070
Replacing Pilot Valve Poppets and O-Rings
ƽ DANGER
Topreventelectricalshock,ALWAYSdisconnectconcentratorfromelectricaloutlet
beforeservicing.
NOTE:Forthisprocedure,refertoFIGURE 20.2onpage 70.
1. Unplugunit.
2. Removecabinet.RefertoCabinetonpage 23.
3. Removethe4wayvalve/manifoldassembly.RefertoReplacing4WayValveand/or
ManifoldAssemblyonpage 65.
4. Locatepilotvalveon4wayvalve/manifoldassembly.
5. Holdpilotvalvestemwiththeflatbladescrewdriverandturnthe9/16inchlocknut
counterclockwiseonecompleteturn.
6. Unscrewthepilotvalvestemassemblyfromthemanifoldwhileleavingthecoilwith
yokeandlocknutintactonstem.
7. Removepilotvalvepoppetfrominsidethepilotvalvestem.
CAUTION
DONOTremovethecoilyokefromthecoil.Thewasherbetweenthebottomoftheyoke
andthebottomofthecoilMUSTnotberemoved.Otherwise,componentsmaybe
damagedinreassembly.
8. Setasidethecoilwithyokeandpilotvalvestemassemblywiththewiresstillintact.
ƽ WARNING
DONOTusesharptoolstoremoveOringfromplasticmanifoldopening.Damagetothe
plasticmanifoldand/orplasticmanifoldairflowpassagemayoccur.Damagetoairflow
mayresultinimproperoxygendeliveryandharmtotheuser.RefertoDetail“A” in
FIGURE 20.2.
9. RemovepoppetandOringfrommanifoldopening(Detail“A”).
10. DiscardoldpoppetandOring.
11. InstallnewOringintotheopeningintheplasticmanifoldhousing(Detail“A”).
CAUTION
DONOTovertightenpilotvalvestemwheninstallingitintoplasticmanifold.Damageto
therubberʺOʺringand/orplasticmanifoldmayoccur.