
1. INTRODUCTION
1.
PrincipleofOperation:
Thisproduct,Tyreinflatorisele
ctronicpre-settypewith
microprocessordrivencontroller
unit.
Apiezoelectrictransducer,calledh
ereaspressuresensor,isemplo
yedtoconverttheinputenergyfr
omtheformofcompressedairt
oelectricalsignaloutput.Theel
ectricalsignalsthusderivedar
e
modulated,manipulatedandpr
ocessedinthecontrollerunitwitht
hehelpofmicroprocessors.Thisint
urnprovidestheoperator
themeans ofoperating the
unitwithdisplaysandcompressed
air routingtodesiredports.
Theunit,apartfromthecontrollera
ndsensorhasa12Vrelaymodul
etoregulatesupplytooperating
elements,Solenoidvalvestodire
ctairtodifferentportsasactivat
edbythecontrollerlogic,abuzz
ertoindicatetotheoperatorwhent
hesetpressureisreachedinthetyre
underinflationandsilencerattheex
haustportofair.
2.
Application:
Thisproductisusedforinflatingan
ddeflatingtyresofallsizesdesign
edforfillingcompressedairupto1
70psiwithapresetpressure
easilysetatthe
controllerdisplaypanel.A
detailedlistofvehiclesandresp
ectiverequiredpressureare
availableinthelaterpartofthisman
ual.
3.
Operation:
Whentherequiredpressureissetint
hecontrollerandthefootvalveispre
ssedoverthetyrevalveinavehicle
orotherwise,theair
underpressureflowfromthetyrean
dreachesthecontrolthroughthep
ressuresensor.The
pressureinsidethetyreisconv
ertedbythepressuresensortoele
ctricsignalsisthenregisteredint
hecontroller.
Themicroprocessoristhenind
uctedintooperation.Firstacomp
arisonofpressuredifferenceb
etweensetandexistingtyrepres
suretakeplace.Then,accordingly
thesolenoidsareoperatedbythec
ontrollerlogic,wherepredefinedp
ortare
openedorclosedforeitherinflat
ingordeflatingthetyres.
Once,thesetpressureisreache
d,anaudiblebuzzersignalissettor
eachtheoperator
awarenesstoindicatethatthecycl
eofoperationiscompletedsucces
sfully.
Whenthetyreisdeflated,theair
isdirectedtotheexhaustport
wheretheairisexhaustedthrougha
silencer.