7471 AA - шлифовальная машина SKIL - Бесплатное руководство пользователя

РУКОВОДСТВО ПОЛЬЗОВАТЕЛЯ 7471 AA SKIL

MaunHka 3 Довьно op6iToю шлifувань

BCTyn

Ley iHcTpymeHT npn3HaueHo dny cyxoro niyBaHHa depeBa, nlaactnKIB, MeTaly, uNaKJIbOK i fap6oBaHNX noBepxohb
LcIiHCTpymeHT He npuaTHn IJn npomncloBOB0 BHKOpNCtAHN
- PpOHTaIte i 36epeKITb IIO INCTpyKciIO 3 EKcnnyatauii ③

TEXHIYHDAHI ①

EJIEMHTI IHCTPYMEHTA ②

A OnopHa HaHaKa
B BoNTHaKnaKn
C HuaHnI nCT
D NIOBIOBIOBAu
E AanTep nIlococy*
F BmMkaHnBJIeHHa
G PeryIaTOp o6eptiB wliDyBaHH
H BenthuauiHi OTBOPn

Помоцен ИСТтум ent,Забравен Ha ВьртЯю ce 3beHo, Moже Да пчинн ТраBMN.

e) He HauceHbAte Bb3MOxHocHTte cn. Pa6oTeB Cta6nHO NIOJOKeHne Ha TAnOTo H BbB CBeHN MOMENT NOdIbPHaite paBHOBeCne. TaKa Iue MoKeTe Da KOHTPOJInpTa eJeKTPOnHCTpyMeHtA No-Do6pe nNo-6e30NaCHO, aKO Bb3HKnHe HeOuaKaBaHa CNtYaunr.
f) Pa6oTeTe c noxOaHIO 06JeKnlo. He pa6oTe c HInpOnn dpexn nIyKpaWeHn. DpbXte Kocata n dpexnte cn Ha 6e3oNaCHO pa3cToHne OT DBNHeu ce 3BeHa. HInpOnnte dpexn, yKpaWeHnra, nbJrnte KOCN MOrat da 6bDaT 3axBaHaTu n YBLeueHn OT BbptAun ce 3BeHa.
g) AHO e Bb3MOHNO H3NoJ3BaHeTo Ha BbHnHa acnnpauonHna cncTeMa, ce yBepraBaTe, Ye TRe BnIIOUeHa nФyHKuONHpa N3npaBHO. I3noJ3BaHeTo Ha acnnpauonHna cncTeMa HamaJIyBa pncOBete, JbJIkaunCe Ha OTdJIaTa Ce npn pa6Ota npax.
h) O6poTo No3HbAHe Ha eJenKTPoHnCtpymeHTa BCJeCTBHe Ha YecTa pa6Ota C Hero He e NOBOd 3a HamaJIraBaHe Ha BHImaHneTo I npHe6peRbaHe Ha MepKHe 3a 6e3OnacHOCT. ENo HEBHIMaTeJHo DeIcTBHe MoKe Da IpeiN3BnKa TeKKn HapaHbAHn CaMo 3a Yaactn OT cekyHdaTa.
4) BHNMATEJIHO OTHOWEHNE KbM EJEKTPOHCTPYMEHTN
a) He npetobapbaite eelenktpoHHCTpymehTa. 3noI3BaIte eelenktpoHHCTpymehTnte camo cbo6pa3HO TxHOTo npedHa3HaueHHe. Ie pa6oHTte no-dOpe nno-6e30nacHo, KOrato H3noI3BaTe NOxOJaUNe EelenktpoHHCTpymEH B 3aDaJeHn O T npOn3BOIDTEJNAHAna3OH Ha HtOBapBaHe.
b) He n3noJ3BaIe eJeHTpOHHCTpyMeHT, HnTo nycHO npEkbCBAe e NobpeDeH. EJeHTPOHNCTpyMeHT, KOHTo He MoKe Da 6bJe N3KIOUByAH N BKNIOUByAH NO

PpeBnDEHNAOTPPOIN3BOIDTeJIHaAHN，eONaceHITp6BaDa6bIpe moHTnpaH.

c)ПпддИЗВьрWBATEHaKВTOиДa e DeHOCTHI NO eJIeHTponHCTpyMeHTa,HaNP.HacTPOINBaHe, CmHA Ha pa6OteH HNCTpyMeHT, KaHTo N KOrato ro npHbnpate,I3HIOuBaIte UeNCeTa OT KOHTaTpeCn.I3BaXdAite 6aTepePnra,AnOe Bb3MOxHO. Ta3n MЯрka npEMaxBa onaChocTTa OT 3aJeNCTBaHe Ha eJIeHTponHCTpyMeHTa No HeBHNMaHHe.
d) CbXpaHbAaTe eIeHTponHCTpyMeHTne Ha MeTa, KbTeO He MORaT Da 6bDat DOCTnHaTn OT Deca. He donychaiTe Ta 6bDat N3No13BaHNOT Nua, KOHTo He ca 3ano3HaTc HauHna Ha pa6ota c TEx N He ca npoueHn Te3n HNCTpyKcHn. Korato ca B pueTe Ha HeONTHn NOTpe6nteHn, eIeHTponHCTpyMeHTne MORaT Da 6bDat N3KIOuHTeHNO nacHn.
e) PndbpaHte Do6pe eNktpoHnCTpyMeHTte cn n ancecoapnte m. PpOBepraBte daHn noDbHHnTe 3BeHa yHKUHOHPaT 6e3yKOpHo, daHn He 3aKnHBaT, daHn HMa cUynHeH nn NobpeHn DeTaHn, KOHTo HApuBaT Hn H3MeHr T cyHKnthe Ha eNktpoHnCTpyMeHTa. PpeHn da H3NoJ3BaTe eNktpoHnCTpyMeHTa, ce nOrpHHeTe NOBpeHnTe DetaiHn Da 6bDat pemOHtnpaHn. MHOrO OT TpyoBHTe 3IOnOlyuKc Ce dJIxKaT Ha HeDobpe PndbpaHn eNktpoHnCTpyMeHTn UypeHn.
f) PndbpaHte peHneHTe HNCTpyMeHTBnHaHn do6pe 3atoyeHn uHCTn. Io6pe noDbpxHaHNTe peKeu INHCTpyMeHTC octpnpb6OBe OKa3BaT nOMaIKo CbIpOTNBJIeHHe n Ce BOJr TNo-JeKO.
g)ИЗнOL3BaIte eLEHTPOINHCTpyMeHTte, DOJIbIHNTEJIHITe pIpcnOco6JIeHHa,pa6OTHIne HNCTpyMeHTn T.H., cIb6pa3HO IHCTpyHCInTe Ha npOn3BOJNTeJIa.C DeHocTn n IpoUeDpyn, EBeHTyALHO npEaNNcaHn OT pa3JIuHn HopMaTHBn DOHyMeHTn.ИЗПОЛ3BaHeToHa eLEHTPOINHCTpyMeHTn 3a pa3JIuHn OT npEaBnDEHtne OT npOn3BOJNTeJI npIIIOJKeHH IOBNUBa ONaCHOCCTTa OT Bb3HnKBaHe Ha TpyDoBn 3ILOJNYKn.
h) NpIbpaHte dpHHNte n pbHOXBaTHNTE cyxn, uCTHn HeomacLeHN. XJIb3raBHTe dpBXKNu pKoXBaTHN He No3BOJIABaT 6e30NaChata pa6Ota n do6pTO KOHTPOJInPae Ha eJeKTPOINHCTpyMeHTa npn Bb3HNKBaHe Ha HeOyakBaHa CNTyaUa.
5) IOdIbPHaHE
a) DonyckaTe peMOHTbT Ha eJektpoHnCTpyMeHTte Bn Da ce H3BbPwBa cAmO OT KBAJIHΦnIpaHn CneuHaJIncTH n CamO C N3NoJ3BaHeTo Ha opHnHaJIHn pe3epBHN qACTn. ITO3n HaCHn Ce rapaHTnpa CbXpAHraBe Ha 6e3OnaChocTTa Ha eJektpoHnCTpyMeHTa.

YHA3AHN3A B6E3ONACHA PABOTA 3A JIINΦOBbUHMAUHHN

OBUUN

MaunHata He Tp6Ba da ce n3noJ3Ba ot Iuca noi 16 roDHH
- YpeBt He e noDxOJa3a MoKpo WJnfoBaHe
Hikora He n3noJI3BaIte HNCTpyMeHTa, aKO Ka6eJIbTe NOBpeDeH; ToI TpI6Ba Ia 6bJe 3aMeHeH Cbc CneuaJIHO NOIroTBEN Ka6eJ, HAIuHeH ppe3 cepBn3HaTApraHn3aun.

He 06pa6oTbaIte a36ecToCbIbPkaU MaTepHaI (a36ecTbTe KaHceporeHen)
-Предии n3BbPswBaHTo Ha nKaBaTo n Da 6nlo HAcTpoJa nIi CmHa Ha npHaJdJIeKHOCT BnHaN n3BaJdaIte ueIceLa OT KOHTaHa eJeKtpo3axpaHbAHeTO

AHCECOAPH

SKILMOKeJaOcnHypN6e3aBapnHa pa6oTa Ha eJeKTPoYNHCTpyMeHTa CaMo aKOce H3NoJ3BaT opuHNHaJIHN DoIbJIHNTeJIHn PnpCnocO6leHn
He n3no3BaIte n3HOceHn,pa3KbcaHn nn CnIH0 3aMbpceHn IINΦOBvHn JNCTOBe

PNEIN YNOTPEBA

-ПпeДиВКЛIOUBAHeHaИHCTpyMeHTaВKOHTaKTeceyBepTe,YeМpeXOBOTOHaInpEKeHneOTROBapRaHaInpEKeHnETo，O6O3HaueHoHaΦIpMeHaTa Ta6JIkaHaHHCTpyMeHTa
ИЗбгваite NOBpeДи,КонTO MORaT DA 6bdaT npUHHeH N O BHTOBE, rBO3dEN I dpyrN MeTaHn eIeMeHTN B O6pa6OTBaHnI DeTaI; OTCTpaHete rN npEdu Da 3anoCHte pa6Ota
- ɪnəʊlɪsɪbʌtɪe Hɑnʌbɪnəʊp aɪsɪbɪtɪu n ɒeʒɔːnɑsɛhɪn paɪkɪoʊnɪteɪn c kɑnɑŋtɪeT 16 A
- Pn pa60Ta HNBOTo Ha 乌Ma MoKe Da HaDbNsiu 85 dB(A);HocTe aHTtnfoH
IpaXbT OT hKON MaTePnAJI, KaTO HAnpIMep CbDbPkaUa OLOBO 6oR, HAKON BINOBE DbPBeCnHa, MInHepaJI N MeTaJI MoKe Da 6bDe BpeDeH (KOHTaKT JINBdNWBaHe Ha TaKbB IpxMOrAT Da npuHHa TJIePRnHn peakun N/nn PecnnpaTopHn 3a6OJIbaHn Ha ONEpApota NII CTOnuTe Ha6n3O Nua); N3NoJ3BaIte nPoTNBONpaxOBa Macha n pa6oTeTe C acnnpupaIo npaxTa yCTpoiCTBO, KOraTo TaHOBA MOHe da 6bDe CBbp3aHo
- OnpeJeHn BnIbHe npax ca KlaacnHnIpaHn KaTO KapuHoreHHN (KATO npax OT nb6 n 6yK) OcObeHO KOraTO ca KOMbHnpAHn C do6aBKn 3a noo6pBaHe Ha CbCTOHNHeTo Ha DbpBecnHaTa; H3NoJ3BaIte npOTbONpaxOBa MacHa n pa6oTeTe c acnnpaio npaxTa yctpoiCtBO, KOrato TaHOBA MoHe da 6bDe CBbp3aHo
CneBaTe DeHnHpaHNTe NO BDC nHcBHaHn OTHOCHOaPaHeOCTTa 3a MaTePnaHTe, KOHTe Heaete Da o6pa6oTBate
Hocete npedna3n pkbauu, oula 3a 6e0nacnoct, npienbauo no TAno oIeIO nB3emTe npedna3Hmepkn 3a Kocata cn (npn DbIra Koca)
- 06e3onacete pa6oTHnMaTePnA (MaTePnA, 3aTeHAT B 3aTgAu INHCTpyMeHT NIN B MeHReMe e NOyUcTouB, OTKoIKOTO aHO Ce DbPkn B pKa)
- PnIuHfoBaHe Ha MeTaNce Oba3yBAt NcKpN; He H3NoJI3BaIte KOJIeKTop 3a npax I dpJbXTe DpyrN Iua n Bb3PImaMeHraBau, Ce MaTePnA1 N3BbH O6cera Ha DeiCTBHe

IPN YNOTPE6A

BnHaHOr OTBeKDaIte 3axpaHbAunrKa6eJ daney ot DBrNKeUTe Ce 3BeHa Ha eNeKTpOHHCTpyMeHTa; npexBbPJIeTe Ka6eJa OT3aI, daJeu OT eNeKTPOINHCTpyMeHTa
HeDOKOCBaIteUHIOFOBbHnIJIcT
BcnyaHa eJektpnuecka nnMexaHnHa He3npabHocT, n3KIOUeTe He3a6abHO anapaTa n PpeKbChTe KOHTaKTc eJektpnueckaTa MpeKa
Ako Ka6eBt Ce NOBpeHnI CpeKe No BpeMe Ha pa60Ta, He rO DOKOCBaHTe, BeHnHa N3KNIOUeTe UeNCENa, HnKOra He n3NoJ3BaHTe INHCTpyMeHTa C

noBpeH Ka6eI

CJIENI PABOTA

-Ппетда ппбере TEИнстумЕТА,ИЗКИЧЕТe MOTopaи ce уberete,у BCINHДВИжeи ce YacTn ca npeyctaHOBUNIДВИжeHNeTO

OBRCHEHNE HA CHMBOJNTE NO IHCTPYMEHTA

③ Ппсдуnotpe6а npoTuTe pblkoBODCTBOTo C yHa3aHnA
④ДВОИнИЗОЛАЦЯ（He ce ИЗИСКВа Ka6eJ 3a 3a3eMЯBaHe)
⑤ He n3xBpIyTe nHcTpymeHTa 3aeJHo C 6ntOBn OTnabu

YIOTPEBA

-ПОДLOЖК -HИКORA He NOJ3BaIte INHCTpyMeHTa 6e3 NOДLOЖKA A !СмЕнгte He3a6abHNO NOBpeHNe TEOДLOЖN (pa3BnTe/3aterHete 4 BnHTa Ha NOДLOKHATA B) ！ИЗΚΙΝΥΕTE yCtpoIcTBOTO OT KOHTaTЯпedi dEMOHTnpaHe/MOTnpaHe Ha NOДLOKHNTe
-IOCTaBHe Ha ⅢHΦOBbUHnJI NcT 6 MOHTpaIe ⅢHΦOBbUHnJI NcT OT BEJIHKPO C, KaKTo e NOKa3aHO -ako e Heo6XoIMO, npEi ToBa NouHcTe Te NOJIOKKaTa

！nepopauetaHaIINFOBbHnINCTpAba Da CbBnaadHe c nepopauetaB IINFOBbHaTaOCHOBA
！npaxoH3cMyHbAHeTo H3ncHbA H3noJ3BaHeTo Ha nepΦopHpaHn JIINΦOBbUHN JNCTOBe
！cMeHnTe CBOeBpBMehHO H3HOceHHTe ⅢNΦOBuHH JNCTOBe

-ИЗСМУКВаHe Ha npaxa！ He n3NoI3BaIte KОЛeHToP 3a npax/npaxOcMуKaHa Ka npn WJIHΦOBAHe Ha MeTaIHoJIeKToP 3a npax ⑦

-изпраьтЕ колeКТОЗа npax D peДOBHO 3a ONTIMaJIEN pe3yЛТАП рпnpaxOn3cMyKBAHETO
-3BaTe npaxoyNoBtEn D, KaTo DbpNaTe npaxoyNoBtEn D Ha3aD

Приинзлгьане на прахocmyкayka -MOTHTPаNTe aanTopa 3a npaxocmykaykaTa E, KaHTo e nokazHo ⑧a -CbbpKeTe MapHyuHa Na npaxocmykayKaTa KbM aanTepa 3a npaxocmykayHa E⑧b

-П配电ьсвачаВКИОУBAHe/H3KIOUOVAHe -ВКИОЧЕТИЗКIOUOTe INHCTPyMEnTAчpe3HaTNUCKaHe Ha npeBKNIOUbaTeJF ② HABbTpE/HaBbH ! BKNIOUte anapata npedn da DOKOChe pa6oTHATA NOBbpxHOCT !npi BKNIOUBAHe Ha INHCTpyMEnTA BHIMABAITE 3a BHe3aANH ydApn nIIN TnaCbUn ! npeДЯ n3KIOUHTe INHCTpyMEnTA, Tp86BaJa RA BdNIRHETe OT pa6OTHATA NOBbpxHOCT

• YnpabLeHne Ha ckOpocTta ⑨ 3a ONtImaJIHn IJIINΦOBbUHN pe3yIITaN npn pa3JIuHn MaTePnAJI

-pe3 waiBa G ② MoKeTe da n3bepeTe KeHaHaTa oT Bac ckopocT Ha WlnfoBaHe
-cbobpa3eTe chopocTTa CbC 3bpHnCTOCTTHa WJINΦOBvHaTa XapTn, KOTo N3No13BaTe
-πpei 3aOuBaHe Ha paBoTa, OnpedeJeTe ONTImaHaTa CKOpoc T 3bphNtOCT KaTo rN TeCTyBaTe Ha pe3epBeH MaTepnaI

-Дьрхани Насочьане HaИнHCTpymEnTa ！！NoВрemeHa pa60Ta，BUNHnДрБHTe ypeDa3a ouBeteHata(NTe) B cnBO 3OHa(и) 3a XBaUaHe -ДВижTe anapata YcnpeEDHO Ha pa6oTHaT a NOBbpxHOCT -He ynpaHnBaIte Oco6eH HATnCK Bbpxy anapata; OCTaBeTe WInΦOBuHATA NOBbpxHOCT cMa Da BbPbN pa60Ta -He NOBdIraTe anapata 3a Da npeDoTbpaTne HeKeJATEHN CLEIN no pa6oTHaTnoBbpxHOCT -OCTaBnTe BEHTnlaQIOHHnTe OTBOPn H② HenokpTN
-ⅢHIOFOBaHe -KOLIYeCTBOTO Ha IpEmaxHaTnMaTePnA1 Ce ONpeJELa OT N36Opa Ha 5kUpyKa, N36paHaTa CTenEn Ha CkOpocTTa Ha ⅢHIOFOBaHe H CnlaTa Ha IpnITnCKaHe ! IpeKoMePHOTo yBelenuYabHe Ha CnlaTa Ha IpnITnCKaHe He BOn Da YBelenuYabHe Ha INHTeH3NBHOCCTTa Ha OTHemaHe, a DO NO-6bP3OTO N3HOCBaHe Ha 5kUpyHa Tn Ha IHCTpyMeHTa ! He N3NoJ3BaIte HNkOra eDInn CbSsI WIIINΦOBByeH JNCT 3a DbPBO n MetaJI

YKA3AHN3A PABOTA

3a onpeIeJIHe Ha ONTImaJIHaTa pa3Mep Ha a6pa3nBnTe 3pBnca (N cKOpocTMOxke) Da N3POn3BaTe Ta6nua！ BnHarn n3npo6BaIte pBPBO Bbpxy HeHyxHo napYe MaTepnai
3a noBeeu HnΦopMaun BnKTe www.skil.com

ПОДДРьЖHA /CEPBN3

To3n HNCTpymEn He e npedHa3HaueH 3a npofoecnoHaHa ynotpe6a
-Подьрkaite BnHaH eIeKtpoHCTpyMeHTa 3axpaHbAunKa6eJI YnCTN (OCO6eHO BeHTNaUHOHHTe OTBOpH ②) -NoCHBaIte NOJenII CE cPtyKOB npax C YeTka！npedn NouchTaHe nKlnOyTe uencela
AkoBbnpeknIpeu3HOTnpoN3BOcTBO N BHMaTeJHO 3nHTBaHe Bb3HNKHe NOBpea, INCTpyMeHTa da ce 3aHece 3a peMOHT B OTOpN3HpaH CepBn3 3a eEeKtpOnHCTpyMeHTn Ha SKIL -3aHeceTe INHCTpyMeHTa B Hepa3rIo6eBnD 3aeHD CdoKa3aTeJIcTB0 3a NOKyNkTaMy B TbproBcHn OBekt, OTKbDeTo cTe rO 3aKynHIn, INH B Na-6n3Kn cepBn3 Ha SKIL (adpecnte, Kahto n cxemaTa 3a cepBn3HO o6ClyhBaHe Ha eJeKtpOnHCTpyMeHTa, MOKeTe Da HamePnte Ha aDpec www.skil.com)
- ImaIte npedn, ye noBpeHa nopadn npetobapBaH eHn HnnpaBnHO MaHnyLnpaHc nHCTpyMeHTa 6bdaTn3HIOUeHN OT rapaHnra (3a ycNoBnTa Ha rapaHnraTa OT SKIL BnK Ha nHTepHeT aDpec: www.skil.com nnnoNTaTe Baunr dNtbp)

ОПАЗВАЕ HA OKOLHATA CРEDA

• He n3xBbPnIte eIeKtpOpypeInte, npncnoc6JIeHNrTa n OAnKOBKnTe 3aEHDc 6bHTOBn OTnaDbu (cAmo 3a cTpaHn ot EC) -cb6pa3Ho DnpEKTnBaTa Ha EC 2012/19/EG oTHocHO H3HOceHH eIeKTPnueckn u IeKTPoHHuypeu N OTPa3RABaHeTo N B HauNoHaJHOTo 3aKOHODaTeJCTBO H3HOceHnTe eIeKTPoypeDn CneDa da ce cb6bpat

OTeHIOIaCeIpeaBaT3apeuKInpaHe cnopei 3NCHBAHnraTa 3a ONa3BaHe Ha OKoHaTa Cpea -3a TOBa yKa3Ba CNMBOJbT ⑤ TORaba KOraTO Tp6Ba Da 6bDat yHnioKeHH

UYM/BNBPACIN

• I3mepeHO B cBoTBcTbne c EN 62841, HNBOTo Ha 3ByKOBOTo HAJIraHe Ha TO3n INHCTpyMeHT e 85,0 dB(A), a HNBOTo Ha 3ByKOBaTa MOuHocT 96,0 dB(A) (HeonpeJeIeHocT K = 3 dB), n Bn6paunrTa 4,7 m/s² (TpnaKcnalHa BeKTopHa cyMa; HeonpeJeIeHocT K = 1,5 m/s²)
  HnBotoHa npdaeHnte Bn6paunE n3mepeHO B cBoTBeTcBne CbC CTaHdapTHn3npaHnre Tec, ONpeJeHe B EN 62841;To moKe da ce n3noJ3Ba 3a cpaBHeHne Ha eINHnCTpyMeNT C dpyr N KaTO ppeBapInTeHa OceHka Ha NOJaRaHETo Ha BN6paunnpiuN3NoJ3BaHeTo Ha INCTpyMeHTa 3a nocOeHnTe npnloKeHHa

-3n013BaHeTo Ha HhCtpyMeHt 3a pa3nHn OT Te3n npHIOxEHn Hn C DpyH, Hn NIOo IODbPKaHN aKCEcoApn MoKe 3HaHTeHn Da NOBUN HNBOTO Ha KOEt CTne NDIOxHEH
-NePnoDHTeOTBpeMe, KOraTOHCTpyMeHTa e N3KIOUeHINCbOTBeTHO BHLIOUeH, HO C HrO He Ce pa60Tu B MOMeHTa MORaT 3HaunTeJIHO Da HamaJIrT HNBOTO Ha KOETO CTNEODIOKeHN

!npedna3BaIte ce ot efeHTnte OT Bn6paunnte, KATO NOdAbpHate NHCtpymeHa n AHCcecoapnte My, na3nte pBcTe cn TOnn n OprHn3npaTe BaWNTe MoJEn Ha pa6ota

SK

Excentricka brúska 7471 UVOD

Tento nastroj je urceny naSuche brusenie drevenych, plastovych, kovovych, naterovych a lakovanych povrchov
- Tento nastroj nie je vchodny pre professionnelle pouzitie
- Precitajte a uschovajte tento navod na pouzitie ③

TECHNICKE UDAJE ①

CASTINASTROJA ②

A Brusny tanier
B Tanier skrutka
C Brusny list
D Prachová schränka
E Adaptér na vysávac
F Vypinač zapnutie/vypnutie
G Koliesko regulator brusiacu rychlosti
H Vetracie strbiny
NEOBSAHUJE STANDARD

BEZPECNOST

VSEOBECNE BEZPECNOSTN UPOZORNENIA TYKAJUCE SA ELEKTRICKEHO NARADIA