Deprag 345-308U User manual

012203EN
Operating Instruction Booklet
PneumaticScrewdriver
345-308U 339269 A
345-408U 345764 A
345-508U 339270 A
345-708U 385163 B
MICROMAT

2
Dear Customer:
Thistool isthe resultofmore than75yearsofexperiencein thedesign and
manufacturing ofpneumatictoolsforthe industrial market.
Wekindlyask thatyou read theseoperating instructionscarefullysothatyou
will be able tousethistoolsafelyandfor manyyears tocome.
If you need additional information,pleasecontact your DEPRAG
Representative,one ofour international supportofficesorusdirectat
DEPRAG.Wewill be happytoanswer anyquestions.
Pleasevisitour web site: www.deprag.com
Content
1SAFETYTIPS................................................................................................................3
1.1. GeneralSafetyTips....................................................................................................3
1.2. GeneralSafetyTipsforPneumaticScrewdriverSpindles...........................................4
1.3. OwnerObligation........................................................................................................5
1.4. OperatorObligation....................................................................................................5
1.5. WarrantyandLiability.................................................................................................5
1.6. SymbolDescription.....................................................................................................6
1.7. ObserveEnvironmentalRegulations..........................................................................7
2DESIGNATEDEQUIPMENTUSE.................................................................................8
3INSTALLATION..............................................................................................................8
4OPERATION................................................................................................................11
4.1. RangeandExchangeofClutchSpring.....................................................................12
4.2. Torque Adjustment...................................................................................................13
5HANDLING...................................................................................................................14
6DISASSEMBLY-ASSEMBLY......................................................................................15
6.1. SpecialRepair Tools(OptionalEquipment)..............................................................17
6.2. SparePartsDrawings...............................................................................................18
6.3. DimensionalDrawing................................................................................................23
7MAINTENANCEAND UPKEEP...................................................................................24
7.1. WearParts................................................................................................................24
8TROUBLE SHOOTING................................................................................................25
9DELIVERYCAPACITY.................................................................................................26
10 ACCESSORIES -OPTIONAL EQUIPMENT..............................................................27
11 STORAGE..................................................................................................................28
12 TECHNICAL DATA.....................................................................................................29
13 DISPOSAL..................................................................................................................30
14 CONFORMITYDECLARATION.................................................................................31
15 SERVICELOCATIONS AND AUTHORIZEDPARTNERS.........................................32

3
1SafetyTips
1.1.GeneralSafetyTips
Beforeoperating tool makesureto carefullyreadand
observethisoperating instruction.
Generally,theoperator ofthe equipmentand/ormachineryisresponsible for
the equipment’sperfect condition and operation,while observing all necessary
safetyregulations.The equipmentand/or machineryhasbeen constructed in
accordancewiththe newestlevel oftechnologywhile recognizingall
necessarysafety-related requirements.Nevertheless,while operating the
equipmentand/or machinerythereisariskofbodilyharmtothe operator as
well as damagetoequipmentand/or machineryand other property.
Operatethe equipment and/ormachineryonlyif equipment/machinery
· Isused forthe task it was designed for
· is inperfectworkingcondition andsafetouse.
It isimportanttoobservethe technical dataofthe equipment, especiallyin
regardstotheenvironmental temperatures. The designated area ofuseforthis
equipmentisclearlydescribed in chapter Designated EquipmentUse and
thoserequirementshavetobe observed aswell.Prerequisiteforthe safe
conduct andthe uninterrupted operationofthe equipment, isthe knowledge of
the basicsafetytipsandthesafetyregulations.Additionally,all current
regulationsforasafeoperational area,for accident-prevention guidelinesof
electrical and mechanical installations, aswell asnoisesuppression
requirementsmust be observed.During anymaintenanceor repair work,a
clean worksurfaceisrecommended.Also,itisnotrecommended toeither eat
or smokeduring repair or maintenance.Arbitrarychangesmadetothe
equipment,whichaltersitsdesignated use,voidsthe warrantyand cancelsthe
manufacturersliability.
· The toolis notinsulated toprotectagainstanelectricalpower surge.
· Itisnotrecommended tousethistoolin explosivehazardous
environments,unlessit wasspecificallydesigned forsuchause.
The operating instruction booklet,especiallythe safetysymbolsandsafetytips
attachedtothe equipmentor included inthe documentation,mustbeobserved
at alltimesbyall persons gettingintocontact withtheequipment.

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1.2.GeneralSafetyTipsforPneumaticScrewdriverSpindles
·
Disconnectthetoolfromthe airsupply, when changingbits or
when readjusting clutch.
· Donotwear wide clothingorjewelry, fortheycan beseizedby
movable parts.Wear ahairnet ifoperator haslonghair.
· Keep handsoff theinstalledbitorsocket.
· Injuryispossible,if the driver reacts withan unexpectedmotionor when
driver is usedwithabrokenbit.
· Keep handsawayfromholdingfixture (ifused).Thisapplies especiallywhen
looseningscrews inatight area.Thereis arisk ofsqueezing fingers b
etween
holding bracket and tool.Makesurethat anybracketusedis correctly
installed.
· An unexpectedmotion ofthebitorsocketmaycreateadangerous situation.
· Especially, when operatinganimpact wrench, it ispossiblethatan injury
occurs, ifthebitbreaks [flying splinters].
· Whenusing toolwithbit-adapter or bit-extension (i.e. Magnetic Bitholder),
makesure,thatthoseitems areingoodcondition andwell suitedfor the
applicationwiththistool.
· Whenusing ascrewdriver stand, makesure thatthetoolis
securelymounted.If nostandisused, makesuretohaveasolid
stancetoabsorbthetools’torquereaction force.
· Ifyou are notabletoabsorbthetorquereactionforce,usea
holding fixture orside handleonthe screwdriver.
· Afterturning-offthetool,thebit will continuetorotate[inertia].
· Donotexceed themaximumallowableairpressure.Apressure regulator
hastobeinstalled, whichregulatestheairpressurebeforeitreachesthe
tool.
· Avoid pressure tofall belowtheminimumallowable airpressure,because
the clutchcannotshut-offsafely. Thismaycausean increasedtorque
reaction force, resultingin riskstooperator,toolor product.
· Incaseofan interruptionof the air supply, makesuretowait untiltoolhas
cometoastand still, prior toreactivatingtool.

5
1.3.OwnerObligation
The owner isobligedtoonlyletpersons operatetheequipment,who
· are familiarwithbasicwork environmentsafetyrules andaccident-
preventing regulations.Also,thosepersons musthavebeen instructedin
the correctuseofthe equipment.
· haveread andunderstood all safetyand warning notificationsin the
OperatingInstructionBooklet,aswell as allotherdocumentation
pertainingtothisequipment.
· checkandconfirmat regularintervals,thatasafetyoriented operationis
guaranteed.
Onlyqualifiedandauthorizedpersonnel is allowed tooperate, maintainand
repair this equipment.Amalfunction, whichimpairs operator safety, mustbe
immediatelyremoved.
1.4.Operator Obligation
Personnel,who isengaged inthe operationofthe equipment,mustalways be
committed to
· observethebasicsafetyandaccident preventing regulations,
· read andobservethe safetyand warning notifications ofthisoperating
instructionbooklet.
1.5.WarrantyandLiability
Unless otherwisespecified,our “General Salesand DeliveryConditions”
apply.Warrantyand liabilityclaimsin regardstopersonsor equipment
damagesareinvalid, ifone or several ofthefollowing causesapply:
· Useoftheequipment inanon-designated application.
· Improperinstallation, operation, serviceormaintenanceofthemachine.
·
Operationofthe machine witheitherdefectiveor removed safetyand
protectiondevices.
· Non-
observanceofthe requirements stated in the operating instruction
booklet
,in regardstotransportation,storage,mounting,installation,
operation,maintenanceand serviceoftheequipment.
· Structural changeor adjustmentonthe equipmenttoanon-
designated
use.
· Inadequatesupervisionofwear parts.
· Improperrepair,inspection ormaintenance.
·
Catastrophic casesbecauseofawar,actsofgod or otherreasonswhich
are beyond ourcontrol.

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1.6.Symbol Description
Readand observetheOperating Instruction Booklet, prior
toand during operation oftool.
DANGER
Reference toan immediatedangertoaperson.Mayleadto
seriousinjuriesor evendeathifunobserved!
Properlyrecycle environmentallydamaging grease,cooling
agents ordetergents.
RECOMMENDATIONS
Importantoradditional information onthe equipmentor inthe
documentation.
Useeyeprotectionor wear safetygoggles.
Wearhearingprotection.
Warningagainsthand-injuries.
Attention:Keepawayyour handsfromareas,whicharemarked
withthissymbol!
Hands maybe crushed,seizedorotherwiseinjured.
ESD-protected area
Equipmentmaybe damaged ordestroyed byan electrostatic
discharge.
WasteOil

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Maintenanceand repair onhydraulicand pneumaticequipment
mayonlybe performed byspeciallytrained personnel!
Disconnectequipmentfromairsupply, priortorepair of
pneumatic orhydraulicequipment.
Provide regular preventivemaintenanceon hosesandairlines.
Exchange hoselines,even ifthere isnovisible damage!
(Observecorresponding requirementsofthe manufacturer!)
Afterrepair and maintenance,check thefollowing items:
· makesurealldetached andre-attachedconnectionsare
solid.
· confirm thatremoved covers, screensor filterswere re-
installed
· During disconnecting orreconnectingof anair-operated
equipment, injurymayoccurduetoawhipping air-hose
Afterconclusion of maintenanceor repair andpriortostartof
operation,makesure to
· removeall materials,toolsandothersuppliesneededforthe
maintenanceor repair fromworkarea oftheequipment
· removeleaking liquid oroils
· makesureallsafetydevices onthe equipment workperfectly!
1.7.ObserveEnvironmentalRegulations
Whenworking onorwiththe equipment,itis imperativeto
observeall requirementsinregardstowaste-disposal and
proper recycling.
Especiallyduringinstallation,repairormaintenance,water
damaging agentssuchas
· lubricatinggreaseand oil
· hydraulic fluid
· coolingagents
· solvent-containingcleaningagents
mustnot leakintothe groundorintothesewage system!
Suchmaterialsmustbestored,transported,containedand
recycled insuitablecontainers.

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2DesignatedEquipment Use
DEPRAG MICROMAT/MINIMAT-Screwdrivers ofstraightshapeareused for
manual torque
-
controlled assemblies, preferablyfor vertical applications.
3Installation
·
Blowout airlineandpressure hose,prior toconnection ittothetool.
· Makesure,thatall air lineshaveasufficientcross-section(see technical
data)andhosesmustbefree ofbends andkinks. The hoselengthshould
not exceed2meters.
· All DEPRAGScrewdrivers maybe operatedeither withor without
lubricatedair(see paragraph: Maintenanceand Upkeep). Best resultsare
achieved, when machineislubricatedwith1–2dropsofoil per1m3.
Whenoperatingwithoilfree air,aperformancereductionof upto20%
occursandmaintenancerequirementsincreases!
· Connect the equipment asfollows:
a) for standardoperation connectequipmenttoamaintenanceunit,
consistingofFilter withcondensationreservoir, Regulatorand Oiler.
Whenchoosing amaintenanceunit, observeair consumption ratefor
the tool(see TechnicalData).
Air ConsumptionThread Size
PartNo.
0,05 -0,5m³/min ¼” 820454 A
0,15 –1,5m³/min
½” 820455 A
0,8–6,0m³/min ¾” 821608 A
b) for theusewithminimal lubrication connect toFilter/Regulator
consistingofFilter withcondensationreservoir andPressure Regulator
Air ConsumptionThread Size
PartNo.
0,05 -0,5m³/min ¼” 822408 A
0,15 –0,9m³/min
3¤8” 826981 A
0,15 –1,5m³/min
½” 822409 A
0,8–6,0m³/min ¾” 826982 A
Eachin connectionwithaPoint-of-UseOiler (PartNo.378077 A)
c)for oilfree operation,connecttoFilter/Regulator,consistingofFilter
withcondensationreservoir andPressure Regulator.
Air ConsumptionThread Size
PartNo.
0,05 -0,5m³/min ¼” 822408 A
0,15 –0,9m³/min
3¤8” 826981 A
0,15 –1,5m³/min
½” 822409 A
0,8–6,0m³/min ¾” 826982 A

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OUR RECOMMENDATION: The preferred lubricatingmethod for the
screwdriver spindles mountedinfixtures,brackets,machines,etc.,eachin
connection withacontroller,ismethodb) withPoint-of-UseOiler.
· Checkpressureat directlyon the machine.The Regulatorneedstobe
adjusted toanairflowbetween 5.0(71PSI)and6.3bar(90PSI).Ahigher
pressureleadstoincreased wear andtear.Alower pressure maylead to
clutchnot being abletocorrectlyshut-offthe motor.
Inregardstoair-qualityaccordingtoISO8573-1, werecommend:
CLASS
RESIDUE
OF OIL
RESIDUEOF DUST RESIDUEOF WATER
Content
mg/m³
Particle
Size mm
Concentration
max. mg/m³
DewPoint
oC
Pressure
Concentration
max. g/m³
Lubricated Air 4 5 15 8 +3 6
DryAir 3 1 5 5 -20 0,88
Picture:ConnectionofaDEPRAG MICROMAT-Screwdriver

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RecommendedAccessories
Balancer, spring loaded
WEIGHT CAPACITY
FROM –TO (kg)
MAX. CORD LENGTH
(m)
WEIGHT
(kg) PART-NO.
0–0,5 1,6 0,5 827676 A
0,3–1,2 1,6 0,5 827677 A
1–2 1,6 0,5 827678 A
2–3 2 1,2 808690 A
Hose Balancer, spring loaded
WEIGHT CAPACITY
FROM - TO
(kg)
MAX. HOSE
LENGTH
(m)
HOSE
I.D.
(mm)
CONNECTION -
THREAD
WEIGHT
(kg) PART-NO.
0,4–1,2 1,2 824069 A
1,2–2,2 1,3 824069 B
2,2–3,0
0,8 5 G¼ i/G¼a
1,4 824069 C
PneumaticSpiral Hose
AIRCONSUMPTION
FROM – TO
(m³/min)
HOSE
INNER-Æ
(mm)
OPERATING RANGE
(m) PART NO.
0–0,1 4 0,8–2 346697 D
>0,1–0,3 6 1 –2,5 346697 E
>0,3–0,5 6 1 –2,5 346697 F

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4Operation
Unlessotherwiserequested thedriver ispresettomax.torque withthe
strongest clutchspring installed on theclutch.Adjustclutchtothe required
torquevalue.Ifnecessary, exchange clutchspring.The required torque
adjustment can bechecked,using aDEPRAG TorqueWrenchor Measuring
Platform(seeDEPRAG catalogsD3020 andD3022).This equipment can
alsobe usedtore-adjustthetorque oftheScrewdriver.
Tooperatetheclutch,usingaclutchspring whicheither
surpassesorfallsbelowitsspecifiedtorque range,leadstoa
reductionofthe torque accuracy.
NOTICE
The screwdriver isfurnishedwitha reversiblemotor and a
clutchtorquing outin right-hand rotation (sothatifyou look
atthescrewdriver fromtheairinletsideitrotatesclockwise).
Push–to–start–screwdriver.
The flowpressure should notdropbelow5bar/71PSI -reducedoutput!

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4.1.Rangeand ExchangeofClutchSpring
The torque range oftheDEPRAG Screwdriver is adjustable.Pleaseseea
listing forthetorquerangesofthe color
-
codedspringsbelow.
TorqueRangeoftheindividualclutchspring:
PART-NO.
WIRE-Æ
COLOR TORQUE - MIN. TORQUE - MAX.
347218 2,0mm abraded 55 Ncm=4,9in.lbs. 70 Ncm=6,1in.lbs.
326730 1,8mm blue 25 Ncm=2,2in.lbs. 60 Ncm=5,3in.lbs.
323877 1,6mm green 9 Ncm=0,8in.lbs. 42 Ncm=3,7in.lbs.
323878 1,1mm red 5 Ncm=0,4in.lbs. 15 Ncm=1,3in.lbs.
322914 0,7mm natural 2 Ncm=0,2in.lbs. 5Ncm=0,4in.lbs.
All torquevalues arebased on90-PSI (6,3bar)airpressure. Torque values
are estimateddatawhichmaydiffer–dependingon thetype of screwjoint.
ChangeofClutch Spring (seepicture)
Toavoid loosingparts, itis recommended toonlydisassemble
the machineontop ofaflat worksurface.
1.Prior tochange ofclutchspring,disconnectdriver fromair/ power
supply.
2.Unscrewspringsleevecomplete(lefthand thread).
3.Unscrewclutchbearing complete(lefthand thread).
4.Takeoutthecompleteclutch.
5.Put wrench805492 (AF6)ontothehexof theclutchshaft and screwoff
adjustmentnut bymeans ofwrench805491 (AF11)(right-handthread).
6.Drawoff lock ring.
7.Takeoff clutchspring andassembleclutchinreverseorder.
8.Introduceclutchcompleteintothe clutchbearing and screwthe latter on
tothescrewdriver.
The hexoftheclutchshaft mustengagewiththehexof the
gear supportresp. spindle(located ingearing).
Checkthisandensure thatengagement lift onthe spindleis
available (onlypush-to-start-screwdriver).
9.Re-adjusttheclutchtothe requiredtorque (seechapter Torque
Adjustment).

13
Picture:Exchangeofclutchspring
Makesuretoscrewadjustment(adjusting) nut ontoclutchbearing
untilone line ofthethreadisvisible.
4.2.TorqueAdjustment
1.Disconnectdriver fromair-supply.
2.Unscrewspringsleeve(OptionalEquipment)(left handthread).
3.Unscrewclutchbearing (left handthread).
4.Takeoutthecompleteclutch.
5.Put wrench805492 (AF6)ontothehexof theclutchshaft and turn
adjustmentnut bymeans ofwrench805491 (AF11). Yougetahigher
torquebyturningtheadjustmentnutinclockwise(+)order and vice
versa(-) alower torque.
6.Introduceclutchcompleteintothe clutchbearingandscrewthe latteron
tothescrewdriver.
The hexoftheclutchshaft mustengagewiththehexof the
gear supportor spindle ingearing.
Checkthisandensure thatengagement lift onthe spindleis
available.
clutchspring
adjustmentnut
hexof the
clutchshaft

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5Handling
The operationoftheDEPRAGMICROMAT-Screwdriver is verysimple.Grip
the Screwdriver asillustrated onthe picture “Connectionof aDEPRAG
MICROMAT-Screwdriver”.
Assoonas you putthebit ontothe screwand slightlypushthescrewdriver
down, it will startrunning.Afterreachingthepresettorque,theautomatic
clutchwill disengageandturnoff the Screwdriver. The Screwdriver will be
readyfor thenext operationafterliftingitoffthescrew.
The operatingdirection ofreversibleScrewdriver modelscan be reversed by
actuatingthe reversebutton, inordertoloosen tightenedscrews. Toolwill
alsostart after pushing it down. Theclutchwill be lockedinthereverse
direction. Anincreased reactiontorquemayoccurinthecaseofscrews are
hard totighten(suchas screws withdefectivethread).Thereversebutton
can be lockedbyturning.
For bitexchange,removethe springsleeve364670 A(left-hand rotation), ifat
all present.
· Pushthespindleintotheclutchbearing, inordertotakeawaythe bit.
· Pushthenewbitintotheinternalhexagon ofthespindle, untilyou notice
itsengagement.
· MakesuretouseperfectbitswithDIN3126 –A3external hexagon end
only.
Attention
Foxexchangeofbits,makeabsolutelysureto interrupt
theairsupplyand tohavetheclutchbearing attached.
Otherwise Screwdriverwillimmediatelystartrunning
once thebitispushed, and maycause severeinjuries.
Picture:Change
ofBits

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6Disassembly-Assembly
Disassembly: (see SpareParts Drawing)
CAUTION
Prior todisassembly, disconnect equipmentfromair
supplyinorder to avoidtheunintentional startofthe
toolwhichmayresultinhand injuries!
Onlyexperienced maintenance personnel may
assembleor disassemblethisequipment.
Afterrepair or maintenance,verifythat equipmentrunstospecification!
Principally, useonlyDEPRAG originalspare parts. Otherwise, areduction
in equipmentpower-output and anincreasedmaintenance-requirement
occurs. If NON-DEPRAG parts areinstalled, DEPRAGis justifiedtovoid
anyexisting warrantyand liabilityobligations.
ATTENTION
Never clampmotorhousingintoavice,withouttheusageofthe
protectivechuckingjaws, sincedamagetomotor-housingand
internalparts isunavoidable.
ATTENTION
Motor- and gearingparts maybe damaged if dropped!
For disassembly proceedinthesequencedescribed below:
1.Disconnectthescrewdriver from the air supply.
2.Unscrewthespringsleeve(Accessories -Optionalequipment)(left-hand
thread).
3.Unscrewclutchbearing 337333 (AF14, left-handthread).
4.Takeoutthecompleteclutch337310 Aresp.347227 A.
5.Clampthemotorhousingbymeansofthechuckingjaws460636 intoa
vice.
6.Usethe plier461289resp.the hook323688 tounscrewthethreaded
fitting326497(located intheairinlet)(right-handthread)and removethe
completeairinlet326501 A.
7.Takeoutthevalveplate326498together withthe pressure spring
324117.
8.Pull outthevalvepin 325139resp. 325761.
9.Unscrewthethreaded pin800565fromthevalvehousing3265002 by
means ofAllenkey824491 (right-handthread).

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10.Press outthebearing needle802331 and pulloutthereverseslide
328051 andthepressure spring321746.
11.Putthepressure pin460778intothevalvebushing 328050andunscrew
the valvehousing 3265002 (right-handthread).
12.InsertAllenkey800449 (AF6)intothehexofthegearsupportresp.
spindleandpushthemotor-andgearingpartsout ofthemotorhousing
towards airinletside.
a.Clamprotorcylinder intofixing device.
b.Pull off shaft-sidebearing cover fromrotor.
c.Removerotorcylinder.
NOTE
Exchange onlycompletesets of vanes.
d.Removevanes andcheckthemthoroughly. Vanesthataretoonarrow
or damagedhavetobe replaced in sets.
e.Pull offairconnecting-sidebearing cover fromrotor.
f.Pressthetwoballbearingsfrom thebearing covers.
NOTE
The minimumvanes widthshould be3mm.
Assembly:
Use theDEPRAGGrease807293(100-gtube) togreasethe
ballbearing, needlebearing and gearing partspriorto
reassembly.
a.Clean rotor.
b.Presstheballbearingsintothe twobearing covers.
c.Presstheshaft-sidebearingcover withtheballbearing ontherotor.
d.Insertthenewvanes intotherotor.
e.Puttherotorcylinder over therotor.
After assemblythebearing coversshouldn’thaveanyaxial
gap. Therotormust turnfreely.
f.Press air-connectingside bearingcover withthe ball bearing onthe
rotor.

17
1.Putthemotor- and gearing packageaswell asthevalvehousing
3265002 togetherand slide themotorhousing323683resp.325349over
themuntilthread stops.
2.Putthepressure pin460778intothe valvebushing 328050 andusethe
pressurepintoscrewin thevalvehousing3265002(right-hand thread).
3.Insertthepressurespring321746andthe reverseslide328051 intothe
valvebushing,press inthe bearingneedle 802331 andscrewin the
threadedpin800565(right-handthread).
4.Assemble thevalvepin 325139resp.325761.
5.Mountthevalveplate326498and thepressurespring 324117.
6.Clampthemotorhousing323683resp. 325349bymeans ofthechuck-
ing jaws 460636 intoaviceand assemble the completeairinlet 326501
Abymeansofplier461289orhook 323688 (right-hand thread).
7.Insertclutch337310Aresp.347227Aintoclutchbearing 337333 and
screwthe latter on tothescrewdriver (left-hand thread).
ATTENTION
The hexoftheclutchshaft mustengagewiththehexof thegear
supportresp.spindle(locatedingearing).
Checkthisandensure thatengagement lift onthe spindleis
available (appx. 1,5mm)!
6.1.SpecialRepair Tools(OptionalEquipment)
NAME PART NO.
Fixing device(for rotorcylinder 323692) 461343
Arbor (todisassemble bearing cover withgrooveball bearing) 462329
Plier (forthreadedfitting326497) 461289
Chuckingjaws (formotor housing 323683 [phone]
Pressurepin(topressoutthereversaland toloosenthevalve
housing3265002)
460778
Allen keyAF1,3(forthreadedpin800565) 824491
Arbor (toassemblecirclip 800291intoclutch) 460537
Allen keyAF6(formotor- and gearingpackage) 800449
Pressurepin(todisassemble bearingneedle 802331) 461367

18
6.2.SparePartsDrawings

19

20