INSTRUCTIONMANUALOFCVCONVUM
ReadtheinstructionmanualbyallmeansbeforeusingtheCONVUMandkeepthemanualwithcare.

WARNING
1I
nsta
llam
ec
han
ic
a
lpr
eve
nt
iv
efo
rsa
fetya
gai
nstun
ex
pe
ct
eddr
o
psofs
u
ck
edwo
rkpi
ec
es,i
fd
anger
ous.
2A
vo
idt
ous
eofth
eCO
N
VUMi
nlo
ca
ti
on
swhe
r
ec
orro
si
v
eo
rin
fla
m
mab
leg
asesexi
sts.Nosu
ct
io
nofsuchg
asesbya
llmeans.

CAUTION■Cautionofpiping①IncasemorethantwopadsareusedwithoneCONVUM○Leakageevenbyonepadlowersthevacuumcondition,whichcausessuctionerror.
○Forvacuumpiping,useapipeforbetweenCONVUMandabranchuni
twithalargerdiameterthanthatforbetweenabra
nchunitandpads.
②Useapipewithlargerdiameterthanspecified.Incasetoosmalld
iameterpipesareusedforvacuumpiping,thevacuumdegreeinside
CONVUMcouldincrease,whichresultinginkeepingthevacuumsensorholdON.

■Caut
ionofoperation①OperatingtemperaturerangeforCONVUMis0℃ to60℃,nouseoutoftherange.(maycausetroublesunderfrozen).
②Compressedaircontainsalotofimpurities(water,oxidizedoil,tar,andforeignparticles).Thismaycausedeteriorationofthe
functionsoftheCONVUM.Improvetheairqualitybydehumidifyingwithafter‑coolersordryersandalsoremovetarwithtarremoving
filters.Donotuselubricators.
③Rustinpipingmaycausethemalfunction.Installacompressedairfilterspecifiedfor5microorlessfiltrationclosetothesupply
portofcompressedairofCONVUM.
④Operateavacuumswitch(CKtype)withintherangeofratingelectricvoltageandcurrent.
⑤Moisture,oil,salinity,metalchipsetc.maycausedeteriorationsinfunctions.Avoidsuctionofthosematerials.

■Cautionofmaintenance①Switchoffpowerwithoutfailwhendisassemblingorcha
ngingcomponents.
②Assemblingordisassemblingshouldbedonebytrainedp
ersonnel.
③Donotlosecomponentswhenassemblingordisassembling.
④Whendisassembling,takeagoggleforprotection.Springpartsmayjumpoutoftheequipment.
⑤Whenthelengthofavacuumpipingis1.5mormore,tak
etimemorevacuumgeneratingandvacuumbreakingrespectively.
⑥StandardclampingtorquesofinstallingeachscrewareM
3:0.59N･m■Accessories:None■Vacuumswitchoperationmethods.(pistontypemicroswitch)

CAUTION●Microswi
tc
hrat
ing

Loadcurr
ent R①Noprotectionagainstwateroroil.Notinstalltotheplacewherethesplashof
Inducedesistance（Ａ）
Supplyvo
ltage（Ａ）
wateroroilbeanticipated.
②Electricalcaution
12535ＡＣa)Theperformanceofopen/closebycontactorisinbigdifferencebetweenAC
23250
currentandDCcurrent.Checkratingvoltageandloadcurrent.
ＤＣ3304b)Bigdifferencemaycausebetweenelectriccurrentandin‑rush‑currentsubject
toloadcurrent.Operatewithinallowablein‑rush‑currentvalue(10A).Atclosedcircuit,largerin‑rush‑currentcauseslarger
increaseofwearconsumptionandremovalofcontactor,bywhichcausesunablereleaseofcontactorbyweldedandremovalofcontactor.
c)Incaseinducedcurrentisincluded,backelectromotiveforceisgeneratedandtheenergyislargerwithhighervoltageandthewear
consumptionandremovalofcontactorincrease.Ratingconditionsmustbeconfirmed.

●Adjustm
entforsettingvalueofvacuum.
○Atex‑factory,thevalueissetfor‑46.6kPatoswitchON.IfothersetvalueisdesiredtoswitchON,adjustasfollowingmanner.
(Adjustablerangeisfrom‑20.0to‑53.2kPa.)
1.Seerightfigure.ConnectavacuumpadBwithsamediameterasusingpadAto
avacuumgauge(ourcompanymodel:SG‑4)andconfirmindication"0".
2.UndergeneratingvacuumbyCONVUM,connectbothpadandsetthedesiredsettingvalueofvacuumbyadjustingsupplyingpressuretoCONVUMwithfilter
regulator.
3.Loosenthehexagonnutforfixtureofvacuumswitch.
4.Connectanelectrictester(resistermeasurementrangebeselected).
5.Turnthescrewofvacuumsettingadjustmentfullytocounterclockwise.
(Clockwiseturnisforatmosphericpressureandcounterclockwiseturnfor
vacuumabsolute.)
6.Turnthescrewtoclockwisegraduallyuntiltheindicationofconductivity
isshownintheresisterrangeoftester.
7.Fastenthehexagonnutforfixture.
8.Adjustmentiscompletedbyabove1to7.Reconfirmpropersettingbyreducing
thepressureoffilterregulatorandincreasingagaingraduallyuntilthe
conductivityisindicatedinthetester,whenthevalueofvacuumindicatedissetvalue.Ifnot,itiscausedbysometurningofthescrewwhenfastened
forfixtureasabove7.Inthiscase,onceagainrepeattheoperationfrom2
to7above.
9.Finally,adjustthepressureoffilterregulatorinaproperusingpressure
value.

⑤①

②

③

④

①CVCONVUM②Vacuumgauge(SG‑4)③VacuumpadA④VacuumpadB⑤Filterregulator

Screwofvacuumsetting
adjustment
Hexagonnutforfixture

Operation(◎function,○caution)
Vacuums
witch◎Sensor‑onwhenvacuumreachestothe
settingvalue.
○Microswitchisusedwithspringtype.
Arrangethewiringbytakinginto
accounttheratinglifetime.
○IncaseofCKtype,thesettingvalue
atswitchONcanbeadjustedintherangeof‑20.0〜‑53.2kPa.

Silencer◎Todecreasethenoiseofe
xhausted
airfromCOMVUM.
○Regularmaintenanceshouldbe
executedperiodically.Vacuum
performancebecomesworseifmaterialsofsilencerareclogged
byoil,mist,dust,etc.

Solenoidvalve◎Thissolenoidvalvecontrolsvacuum
generation.(Asusuala3portvalveis
usedtochangethevacuumgeneration
andstop.)○Keeptheoperatingpressureandair‑flowsufficiently.(Payattentionto
theeffectiveareainsection.)

CONVUMF
ilter◎Topreventforeignparticlesfrompad
nottoenterintotheinsideofCOMVUM.
○Selectanappropriatefilteroutof
VF‑2,VF‑3,VF‑5,VF‑6asper
operationalconditions.
○Periodicalcleaningisrequiredat
appropriateintervaltoprevent
cloggingoffilterbymoisturefluid
andothercontaminaters.

Aircylinder

Vacuu
mpi
ping
○Insidediameterofhoseatvacuumside
CV‑05/
10…φ4mmormore CV‑15…φ6mmormore
CV‑20…φ7.5mmormore CV‑25…φ9mmormore
CV‑30…φ11.5mmormore(Ahosewithonesizelargerdiameterisrecom
mendableifthelengthofthehose
excee
ds2m.)○Avoidtouseelbowjoints.
○Smallerdiameterthanspecifiedforpipings
andfittingscausespressuredropand
insufficientflowvolume,bywhichthevacuum
performanceisloweredandsuctionimpossible.

Supplysidepiping○Insidediameterofhoseatair‑supplyside
CV‑05/10…φ4mmormore
CV‑15…φ6mmormore
CV‑20…φ7.5mmormore
CV‑25…φ9mmormore
CV‑30…φ11.5mmormore(Ifthelengthofhosebeingused
exceeds2m,usehosewithlargerinside
diameter.)○Smallerinnerdiameterofhoseandjointsthanspecifiedmayreducethepressure,flowandvacuumperformance.

Filterregulator○Besuretokeepthespecifiedpressure
andrateofair‑flowstable.
○Theoperatingpressure(0.35;0.5MPa)
isspecifiedattheairsupplyportduringvacuumbyCOMVUMgenerating.
Adjusttheoperatingpressureby
takingpressuredropintoaccount.
○Filtershouldbedrainedperiodically(Besuretodrainfrequently
especiallywhenairhumidityis
high.)○Neverusealubricator.
Connectiontootherpneumaticequipments○Besuretokeepairactuatorand
CONVUMasclosetotheair‑supply(compressor)aspossi
ble.
(Otherwiseitmaycau
seinsufficient
supplypressureandf
lowvolume,bywhichthevacuumperf
ormancemaynot
beacquiredwell.)

Suctionpad

Compressor○Capacityofcompressorshouldbegood
enoughtocoverthewholequantityof
consumptionofallpneumaticdevices
includingCONVUM.

CAUTION*Theremustbenoairleakageinthepipingsforbothofsupplyairandvacuum.
*Thewiringforthesolenoidvalvesmustbeinaccordancewiththespecifications.
*Pleaserefertocatalogasforspecificationsandouterdimensions.

ExplodedView●description① CVbody② Silencer③ Plunger(CKtype)④ Spring(CKtype)⑤ Stopper(CKtype)⑥ Springpin(CKtype)⑦ Supplyportnozzle⑧ VacuumadjustmentAssy(CKtype)⑨ SwitchAssy(CKtype)⑩ Screw+

⑩
⑨⑧

②

④
⑥

③

⑤
④
⑦
①

CAUTION*Beforecarryingoutd
isassemblyorreplacingapart,besuretocutpowersupplyandairsource.
*Disassembly/assemblyshouldbecarriedoutstrictlybyapersonhavingprofessionalknowledge.
*Donotloseanypartwhileinassembly/disassemblywork.Otherwise,appropriateperformancecannotbewarranteed.
*Asaspringpartmayflyupduringdisassemblywork,etc.,besuretotakeprotectiveglasses.

http://www.convum.co.jp
MANUALNO.CV‑E‑0208‑①