Airless DP6818 User manual

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Operating Instruction
Productmodel: DP6818,DP6820
DP6818DP6820
Pleasereadandkeepthismanual,Readcarefullybeforeattemptingtoassemble,install,operateormaintainthe
product described. Protect yourselfand othersbyobservingallsafetyinformation. Failuretocomplywithinstructions
couldresult inpersonalinjuryand/orpropertydamage!Retaininstruction forfuturereference.

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TableofContents
Warnings...................................................................................................................3-5
ComponentIdentification ..........................................................................................6-7
TechnicalData..............................................................................................................8
Operation......................................................................................................................9
Set up..........................................................................................................................10
Start up........................................................................................................................11
SPRAYING SPRAYING TECHNIQUE.........................................................................12-13
Install Tip&Guard on SprayGun................................................................................14
TipSelection...........................................................................................................15-16
Cleanup..................................................................................................................17-19
Troubleshooting......................................................................................................20-22
Exploded view.........................................................................................................23
Appendices
Repair-Displacementpump

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Warnings
The following warningsareforthe setup, use, grounding,maintenance, and repairofthisequipment.The exclamation
point symbol alertsyou toageneral warning and the hazardsymbolsrefertoprocedure-specificrisks.When
thesesymbolsappearinthe bodyofthismanual, referback totheseWarnings. Product-specifichazardsymbolsand
warningsnot covered inthissection mayappearthroughout the bodyof thismanualwhereapplicable.
WARNING
FIREAND EXPLOSIONHAZARD
Flammablefumes, suchassolvent and paint fumes,inwork area can igniteorexplode.Tohelpprevent
fireand explosion:
●Do not sprayflammableorcombustiblematerialsnearan open flameorsourcesofignition suchas
cigarettes,motors, and electrical equipment.
●Paintorsolvent flowing through the equipment isable toresultinstaticelectricity.Staticelectricity
createsariskoffireorexplosion inthe presenceofpaint orsolventfumes.Allpartsofthespray
system,including the pump, hoseassembly, spraygun,and objectsinand around the sprayarea shall
be properlygrounded toprotect against staticdischarge and sparks. UseDINO-POWERconductiveor
grounded high-pressureairless paint sprayerhoses.
●Verifythatallcontainersand collection systemsaregrounded topreventstaticdischarge.
●Connect toagrounded outlet and usegrounded extensionscords. Do not usea3-to-2adapter.
●Do not useapaint orasolvent containing halogenated hydrocarbons.
●Keep sprayarea well-ventilated. Keep agood supplyoffreshairmoving through the area. Keep pump
assemblyinawell ventilated area. Do notspraypumpassembly.
●Do not smokeinthe sprayarea.
●?Do not operatelight switches, engines, orsimilarspark producing productsinthe sprayarea.
●Keep area clean and free of paint orsolvent containers, rags, and otherflammablematerials.
●Knowthe contentsofthe paintsand solventsbeing sprayed. Read allMaterialSafetyDataSheets
(MSDS) and containerlabelsprovided withthe paintsand solvents. Followthe paint and solvents
manufacturersafetyinstructions.
●Fireextinguisherequipment shallbe present and working
Sprayergeneratessparks.When flammableliquidisused inornearthe sprayerorforflushing or
●cleaning,keep sprayeratleast 20 feet(6m)awayfromexplosivevapors.
ELECTRICSHOCK HAZARD
Thisequipment must be grounded. Impropergrounding, setup, orusage of the systemcan causeelectric
shock.
●Turnoff and disconnect powercordbeforeservicing equipment.
●Useonlygrounded electrical outlets.
●Useonly3-wireextension cords.
●Ensureground prongsareintact on powerand extension cords.
●Do not exposetorain.Storeindoors.

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SKININJECTIONHAZARD
High-pressuresprayisabletoinjecttoxinsintothe bodyand causeseriousbodilyinjury.Inthe eventthat
injection occurs, getimmediatesurgicaltreatment.
●Do not aimthegun at,orsprayanyperson oranimal.
●Keep handsand otherbodypartsawayfromthe discharge. Forexample, do nottrytostop leakswith
anypart of the body.
●Alwaysusethe nozzletipguard. Do notspraywithout nozzletipguardinplace.
●UseDP-AIRLESS nozzletips.
●Usecaution when cleaning and changing nozzletips. Inthe casewherethe nozzletipclogswhile
spraying,followthe PressureRelief Procedureforturning off the unit and relieving the pressure
beforeremoving the nozzletiptoclean.
●Do notleavethe unitenergized orunderpressurewhileunattended.When the unitisnotinuse, turn
off the unitand followthe PressureReliefProcedureforturning off the unit.
●Check hosesandpartsforsignsofdamage.Replaceanydamaged hosesorparts.
●Thissystemiscapableof producing3630 psi. UseDP-AIRLESSreplacement partsoraccessoriesthat
arerated aminimumof 3000 psi.
●Alwaysengage the triggerlock when not spraying. Verifythe triggerlockisfunctioning properly.
●Verifythat allconnectionsaresecurebeforeoperatingthe unit.
●Knowhowtostop the unitand bleed pressurequickly. Bethoroughlyfamiliarwiththe controls.
PRESSURIZEDALUMINUMPARTSHAZARD
Useoffluidsthat areincompatiblewithaluminuminpressurized equipment cancauseseriouschemical
reaction and equipment rupture. Failuretofollowthiswarning can resultindeath, seriousinjury,or
propertydamage.
●Do not use1,1,1-trichloroethane,methylene chloride,otherhalogenated hydrocarbon solventsor
fluidscontaining suchsolvents.
●Manyotherfluidsmaycontainchemicalsthatcan react withaluminum. Contactyourmaterialsupplier
forcompatibility.
EQUIPMENT MISUSE HAZARD
Misusecan causedeathorseriousinjury.
●Alwayswearappropriategloves, eyeprotection, and arespiratorormaskwhen painting.
●Do not operateorspraynearchildren. Keep children awayfromequipment atall times.
●Do not overreachorstand on an unstablesupport. Keep effectivefootingand balanceatalltimes.
●Stayalertand watchwhat you aredoing.
●Do notleavethe unitenergized orunderpressurewhileunattended.Whenthe unitisnotinuse, turn
off the unitand followthe PressureRelief Procedureforturning off the unit.
●Do not operatethe unitwhen fatigued orunderthe influenceof drugsoralcohol.
●Do not kinkorover-bend the hose.
●Do not exposethe hosetotemperaturesortopressuresinexcess ofthosespecifiedbyus.
●Do not usethe hoseasastrengthmembertopullorliftthe equipment.

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MOVINGPARTSHAZARD
Moving partscan pinch,cut oramputatefingersand otherbodyparts.
●Keep clearofmoving parts.
●Do not operateequipment withprotectiveguardsorcoversremoved.
●Pressurized equipmentcan start withoutwarning. Beforechecking,moving,orservicing equipment,
followthe PressureReliefProcedureand disconnect all powersources.
BURN HAZARD
Equipmentsurfacescan becomeveryhotduringoperation.Toavoidsevereburns,donottouch
hot qui
hot equipment.Wait untilequipment hascooledcompletely.
TOXICFLUIDORFUMES HAZARD
Toxicfluidsorfumescan causeseriousinjury ordeathif splashed inthe eyesoron skin,inhaled, or
swallowed.
●Pleasepayattention toknowthe specifichazardsofthe fluidsbeforespraying.
●Storehazardousfluidinapproved containers, and disposeofitaccording toapplicableguidelines.
PERSONAL PROTECTIVE EQUIPMENT
You must wearappropriateprotectiveequipmentwhen operating, servicing,orwhen inthe operating area
of the equipment tohelpprotectyou fromseriousinjury,including eyeinjury, hearing loss, inhalation of
toxicfumes, and burns. Thisequipmentincludesbut isnot limitedto:
●Protectiveeyewear, and hearing protection.
●Respirators, protectiveclothing, and glovesasrecommended bythe fluidand solventmanufacturer.
MACHINEMAINTENANCE
●Cleaning the machine,partsevery timeafterfinished the paint work.
●The hydraulicoilshouldbe changed after200 hoursworks.
●The diaphragmshouldbe changed aftereach400 hoursworks.
●The screwsconnecting the front pumpand therearpumpshouldbe tightened diagonally.
●Pleasecheck every partshavescrewon the machinevery tightlybeforeusing machine.Especiallythe
suction tube and high pressurehose.
●Pleasenoticethattheinletvalve,outletvalve,diaphragm,areeasilybroken parts,ifthemachinehas
worked manytimes,andthemachinehavesomeproblemaboutthepressure,suction,pleasechange
themfirst,then check again.

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ComponentIdentification
1413 1229
1 Cart/ Hosewrap rack Carrymachine and Stowspainthose.(DP637H)
2 Prime/Sprayvalve ●InPRIMEposition (pointing down)directsfluidtoprime
tube.
●InSPRAYposition (pointing forward)directspressurized
fluidtopaint hose.
●Automaticallyrelievessystempressureinoverpressure
situations.
3 Suction tube Drawsfluidfrompaintpailintopump.(the tube mustbe
screwed tightlyotherwiseairenterinside,sothe pressure
can t be reached yourdesired high pressure.)
4 Primetube Drainsfluidinsystemduring priming and pressurerelief.
5 Wheel Easy formachine tostand/moveon the ground.

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6 Suction filter Prevent the grainsinthe fluidtobesucked intothe pump.
7 Oilcover Preventthe oilleaked out. (pleasechange the46# hydraulic
oilinsideafter200 hoursusing)
8 Pressuregage Easy foryou toreadthe pressureyourespraying.
9 Pressureregulator Increases(clockwise)anddecreases(counter-clockwise)
fluidpressureinpump, hose, and spraygun.
10 HoseConnector Connect thehigh pressurehosewithairless spraygun.
11 On-off switch TurnssprayerONandOFF.
12 ** Outlet valve The valvecontrolthe fluidgoing out of the pump
13 ** Inlet valve The valvecontrolthe fluidsucking intothe pump
14 ** Diaphragm Moved bythe pistoninside, and pumpout the fluid.
15 High pressurehose Transportshigh-pressurefluidfrompumptospraygun.
16 ** Tipguard/ Safetyguard Reducesrisk of fluidinjectioninjury.
17 ** Spraygun tip •Atomizesfluidbeing sprayed, formsspraypatternand
controlsfluidflowaccording toholesize.
•Reverseunclogspluggedtipswithout disassembly.
18 Gun triggersafetylever/ lock Preventsaccidentaltriggeringof spraygun.
(pleaselock the spraygunwhen not using/repair/clean etc)
19 Airless spraygun Dispensesfluid.
20 Gun fluidinletfitting Threaded connection forpaint hose.
21 ** Gun filter Filtersfluidentering sprayguntoreducetipclogs.
22 ** Gun filter Filtersfluidentering sprayguntoreducetipclogs.
23 Electroniccontrolboard.
(onlyforDP6820B) Withthisdevice,themachine willstop workingwhen the pressureisuptomaximumpressureyou setted.And when
you spray,itwillstart toworkautomatically)
(the partsmarked with** areeasilywornparts.)

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Technical Data
Model number. DP6818 DP6820
Type Electric&diaphragm Electric&diaphragm
Pressurecontrolling Mechanical Mechanical
Power750w 750w
Max. pressure(bar) 220bar/3200psi 220bar/3200psi
Max. delivery(L/min) 2.0L/min 2.0L/min
Max. tipsize(inch) 0.019”0.019”
Max. hose length(m) 30m 30m
Hose operatingpressure 220bar/3200psi 220bar/3200psi
Hose explodedpressure 800bar/11620psi 800bar/11620psi
ElectricMotor Induction motor
(brushless) Induction motor (brushless)
Motorspeed(rpm) 1440 rpm 1440 rpm
Sprayingdistance (cm) 30 cm 30 cm
PaintviscosityLowtoMedium LowtoMedium
bothwater-based&
oil-based? YesYes
Netweight 24.50KGS 27KGS
Gross weight 26.50KGS 29KGS
Cartonsize 45x43x61 cm 48.5x48.5x63 cm
Contentsinpackage Airless paintsprayer,airless
spraygun withairless tip/tip
guard/tipfilterincluded,15m
hose,repairkits,manual.
Airless paintsprayer,airless
spraygun withairless tip/tip
guard/tipfilterincluded,15m
hose,repairkits,manual.
(The standardpackagedoesn tincludeall the easilywornparts,but hasdiaphragminside.Inletvalve/ Outletvalve
/ extensionpoleareavailableifyou payextracost)

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Operation
TriggerLock
Alwaysengagethetriggerlock when you stopspraying
toprevent the gun frombeingtriggered accidentallyby
hand orifdropped orbumped.
PressureReliefProcedure
Followthis PressureReliefProcedure wheneveryou
stopsprayingand beforecleaning, checking, servicing,
ortransportingequipment.
1. TurnpowerswitchOFF and unplug
powercord.
2. TurnPrime/SprayvalvetoPRIME
torelievepressure.
3. Holdgun firmlytoside ofpail.
Triggerthe gun torelieve
pressure.
4. Engagetriggerlock.
NOTE: LeavePrime/Sprayvalveinthe PRIMEposition
until you arereadytosprayagain.
Ifyou suspect the spraytiporhoseisclogged orthat
pressurehasnot been fullyrelieved afterfollowingthe
stepsabove, VERYSLOWLYloosentipguardretaining
nut orhoseend couplingtorelievepressuregradually,
then loosen completely. Clearhoseortipobstruction.
Read UncloggingSprayTipinstructionsintheSprayer
orGun Operation manual.

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Setup
1.Preparethe paintaccording to the
manufacturer srecommendations
Thisisprobablyone ofthe mostimportantsteps
towardtrouble-freespraying!
Removeanyskinthatmayhaveformedonthetop
ofthe paint.Ifnecessary,thinthepaint. Finally,
strainthepaintthrough afinenylonmeshfilterbag
(availableatmostpaintdealers)toremove
particlesthatcouldclogthe spraytip
2. Unscrewtipand guard
assemblyfromgun.
3. Uncoil hoseand connect
one end togun. Usetwo
wrenchestotighten
securelyand tightly.
4. Connect other
end ofhoseto
sprayer.
5.Checkthehydraulicoil level.Unscrewthe
cover7#,Theoil shouldbe15mm fromthetopof
the plate.Iftheoil islow,fill asnecessarylow
viscosityhydraulicoil (#46hydraulic
anti-wearing oil);Install back the7#cover.
(DP6818 0.9L,DP68200.8L)
6.. Checktheelectricalservice Besurethe
electricaloutletisproperlygrounded.You canuse
upto100 foot(30m) of3wire,extension cord.
Longerextensioncordsmayaffectthesprayer
performance.Usemoresprayhose,notlonger
extensioncords
7. Plug inthesprayer. FirstbesuretheON/OFF
switchisOFF andthepressurecontrolvalveis
turned fully counterclockwise.Plugthe sprayer into
agroundedoutletthatisatleast3mawayfrom
thesprayareatoreducethechanceofaspark
igniting,sprayvaporsordustparticles.
Pressureregulatorvalve
Clockwise:stronger/ Higherpressure
Counterclockwise:weaker/ Lowerpressure

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Startup
1. Firstbesurethe ON/OFF switchisOFF.
2. AdjustPressureRegulatorValve9# counter
clockwisetolowest pressure.
3. Pullupthe PrimeSprayValve2#into A:
Primeposition.(see picturebelow)
4. Placethe suctionhose3#
intothe coating barrel.
5. Plug sprayerina
grounded cablesocket.
6. SwitchONthe machine。
7. TurnthePressureRegulatorValve9#
clockwise,tillthe fluidiscirculating inthe
primetube (4#)
8. TurnpowerswitchOFF.
9. Transfersuction tube topaintpailand
submerge suctiontube
inpaint.
10.TurnpowerswitchON.
11. Whenyou see paintcoming outofprime
tube:
(1). Point gun intowastepail.
(2). Unlock gun triggerlock.
(3). Pullandholdgun trigger.
(4).TurnPrime/Sprayvalveto B: SPRAY
position.
12. Continuetotriggergun intowastepailuntil
you see onlypaint coming out of gun.
13. Releasetrigger. Engagetriggerlock.
14. Transferprimetube topaint pailandclip
primetube tosuction tube.

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SPRAYING
SPRAYINGTECHNIQUE
1. The keytoagoodpaintjob isaneven coatingoverthe entiresurface.Withspraypainting,thisis
done byusing even strokes,withyourarmmovingataconstantspeed andkeeping thesprayguna
constant distancefromthesurface.
2. Asmuchaspossible,keep the spraygunatrightanglestothe surface.Thismeansmoving your
entirearmback and forthratherthan justflexingyourwrist.
30cm
3. Keepthespraygunperpendiculartothesurface,otherwiseoneendofthepatternwillbe thicker
than the other.Right waytospray
Approximately
10 to12 Inches
Right way
Wrong
4. Inmostcases,the bestspraying distanceis10 to12 inches(25-30cm)between the spraytipand
the surface.
5. The spraygun shouldbe triggered off attheend ofeachstrokeandonagainatthebeginningofthe
next. Thisavoidspaintbuildupattheendofthe strokewhichmayresultinrunsand sags.Triggering
atthe end of the strokealsosavespaint andresultsinabetterlooking job. (See picturebelow)
ApproximateWork
10 to12 Inches
Even Steady
Stroke
Start strokeEnd stroke
6. The
correctspeed for moving the gun willallowafull,wetcoatingtobe
applied withoutrunsorsags. Lapping eachstrokeabout40%overthe
previous stroke produces uniformpaintthickness.Spraying inauniform
patternalternatelyfromrighttoleft and then lefttoright,providesa
professionalfinish.(See pictureon theright)
One waytodo thisistopointthespraytipatthe edge ofthe laststroke
beforetriggering thegun on.

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7. Whentakingashortbreakfrompainting(upto1hr.), lockthesprayguntriggerOFF,reducepressure
toitsminimum(zero)setting and setthe unitto A: Primeposition .Turnsprayeroff and unplug.
RefertoPressureRelief Procedure.
8. Forinteriorcorners,suchason abookcaseorinside acabinet,
aimthe gun towardthe centerof the cornertospray. Bydividing the
spraypatternthisway, the edgeson bothsidesaresprayed evenly.
CleaningTheSprayGun Filter
The spraygunincludesafiltertocatchparticlesbeforetheyreachthe spraytip.If thisfilterbecomes
clogged orobstructeditwillreducethe flowofpaint, changing thespraypatternandpossibly
damaging the filter.
Thisfiltermustbecleanedatleastdailyandperhapseveneveryfourhourswithcertaintypes
oflatex materials.
If thefilterisnotcleanedatthe propertime,itwillplugfromthe top down.Whenthereisabout1inchof
filterthatisn'tplugged,the heavy flowofpaintwillblowpinholesinthefilter.Thisinturnwill allow
unwanted particlestogetintothespraytip,causingspraytiptoclog quickly.
To cleanthefilterduringthepaintingprocess:
1. TurnsprayPRESSURECONTROLVALVE tominimumsettingand turnPrimeSprayValvetoA.
PRIME position.Thiswillbleed off the pressureinthe painthoseand filter.Triggergun tobe sure
pressureisgone.RefertoPressureRelief Procedure.
2. Removespraygun fromhoseusing twoadjustablewrenches.
3. Unscrewfilterhousing, using adjustablewrenchon the nutat the bottomof the housing.
4. Removefilterbeingsurenot tolosethespring and sealingwasherwhichislocated inthe bottomof
the filterhousing..
5. Clean filterthoroughly(orputinanewfilter).Toclean the filter,swishitinwaterorthe type of
solventappropriatetothe paintyou areusing.Ifthisisn tsufficient,useanaturalornylon bristle
brushdipped intheappropriatesolventorwater.Donotuseawirebrushoranysharpinstrument.
6. Insertthetopofthefilterintothegunbodyfittingunderthetipof thespraygun. See Figurebelow.

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Topoffilter
Gunbody
Fitting spring Pinhole
sealing washer
filterfilter
housing
7. Replacethe springandsealingwasherintothe baseof thefilterhousing.
8. Slide the filterhousingoverthe filterandtighten it securelytothe gun, usingawrench.
9. Reattachthe hose,tighteningitsecurelywithtwowrenches.
10. TurnPrimeSprayValvetoB.SPRAY position,increasepressuretoitsprevioussetting and
resumespraying.
InstallTip&GuardonSprayGun
1. Engage triggerlock.
2. Verifytipandguardpartsareassembled in
ordershown.
3. Usetiptoalign seat Tipmust be pushed in
guardallthe wayintoguard
4. Screwtipandguardassemblyon
gun. Tighten retainingnut.
gasket
guard
tip

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TipSelection
SelectingTipHoleSize
Tipscomeinavarietyofholesizesforsprayinga
range offluids.Yoursprayerincludesan 0.017in
(0.43 mm)tipormaybe 0.019”(0.48mm)foruse
inmost spraying applications.
Usethe following
tabletodetermine therange ofrecommended tip
holesizesforeachfluidtype.If you need atip
otherthan theone supplied, see the Reversible
TipSelectionChart
HINTS:
•Asyou spray, the tipwearsand enlarges.
Starting withatipholesizesmallerthan the
maximumwillallowyou tospraywithinthe rated
flowcapacityof the sprayer.
•Maximumtipholesizessupported bythe
sprayer:
–DP-6818 : 0.019 in(0.48mm)
–DP-6820 : 0.019 in(0.48mm)
ChoosingtheCorrect Tip
Considercoating andsurfacetobe sprayed.
Makesureyou usebest tipholesizeforthat
coating andbest fan widthforthat surface.
TipHoleSize
Tipholesizecontrolsflowrate-the amount of
paint that comesout of the gun.
HINTS:
•Uselargertipholesizeswiththickercoatings
and smallertipholesizeswiththinnercoatings.
•Maximumtipholesizessupported bysprayer:
–DP6818 : 0.019 inch.(0.48mm)
–DP6820 : 0.019inch. (0.48mm)
•Tipswearwithuseand need periodic
replacement.
FanWidth
Fan widthisthe sizeof the spraypattern, which
determinesthe areacovered witheachstroke.
Narrowerfansdeliverathickercoat, andwider
fansdeliverathinnercoat.
HINTS:
•Select afanwidthbest suited tothe surface
being sprayed.
•Widerfansallowprovide bettercoverage on
broad,open surfaces.
•Narrowerfansprovide bettercontrolon small,
confined surfaces.

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UnderstandingTipNumber
The last three digitsof tipnumbercontaininformation aboutholesizeand fanwidthonsurfacewhen
gun isheld12 in.(30.5cm)fromsurfacebeingsprayed.
Last twodigits=tipholesizeinthousandsof an inch
ReversibleTipSelectionChart
FanWidth -Inches
OrificeSize
(inches) 4–6
Fan
6–8
Fan
8–10
Fan
10 –12
Fan
12 –14
Fan
FlowRate(gpm) Application
.011 211 311 411 0.12 StainorLacquer
.013 213 313 413 513 613 0.16 StainorLacquer
.015 215 315 415 515 615 0.22 Oil BasePaint
.017 217 317 417 517 617 0.25 LatexPaint
.019 219 319 419 519 619 0.33 LatexPaint
.021 321 421 521 621 0.41 LatexPaint
.023 523 623 0.49 Heavy Latex
.025 525 625 0.57 Heavy Latex

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CLEANUP
Aswithallsprayequipment, yoursprayermust be cleanedproperlyorit willnot operateproperly.
Clogged valvesand filtersarethe most common causesof problems. If followed, theseguidelineswill
insuretroublefree performancefromyoursprayer.
1. Lock the gunand reducethe pressure.Turn
the sprayertoprimeAandshutitoff.Unplug
sprayer. Leavethe suction setinthe paint. Refer
topressurerelief procedure
2. Removesuction tubefrompaintand holdit
aboveabucketofwaterorsolvent. Leavethe
returntube aimed intothe paint bucket.
3. SetPRESSURECONTROLKNOB counter
clockwiseback tominimumpressure.Trigger
gun torelievepressureand lock gun.
4. IncreasePRESSURECONTROLKNOB
clockwisetoabout1/3to1/2maximumpressure.
Thiswilldrawthe remaining paintinthesuction
tube through the pumpand downthe returntube
intothepaintbucket.
5. Placesuction tube and returntubein
containerof waterorcompatiblesolvent.
6. Removespraytipandguard,washer,andlet
soakinwarmwaterorappropriatesolvent.
7. Increasepressuretoabout1/2maximum
pressureandletcirculatefor2-3minutestoflush
paintoutofthe pump,suction tube and return
tube.
8. Tosavepaintleft inthe hose, carefullytrigger
the gun (withspraytipremoved)againstthe
inside of the paint container. Reduce
PRESSURECONTROLKNOBtozero,then
turnPRIMING KNOBtoSPRAY B
Save PaintBack ToPaintCan
9. .IncreasePRESSURECONTROLKNOBagain
untilpaintstartstoflowintothebucket. Assoon
asthewaterorsolventstartstocomeintothe
bucket, releasethetrigger.
10. Change toclean waterorsolventand
continue circulatingforanother5minutesto
thoroughlyclean the hose, pumpand spraygun.
11. Reducepressureand turntoprimeA..
Triggergun.Lock gunand shut sprayeroff.
12.Removespraygunfrompainthose,using
twoadjustablewrenches.Removefilter
housing fromgun.Placegunand filterassembly
intoacontainerofwaterorsolventtosoak.
Coverpaint containerand setitaside.
12.Cleanspraytipandgunfilterwithasoft brush.
Reassemblespraytipincleaningposition.
(Arrowpointstobackof thegun.)
14. Attachpainthosetogun,tightenwithtwo

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wrenches
15.Turntheunitonandunlock gun trigger.Turn
toSprayBand pointgun tosideofcleaning
bucket.
16.Triggergunand graduallyturnpressureknob
clock- wise to1/2pressure.Continuefor
approximately30seconds
17..Releaseand lock trigger,reducepressure,
turntoprimeA. Turnunit off.
18. Removetipassembly.Raisethesuctionset
abovethe cleaningsolution.Turnuniton,turn
tosprayincreasepressureandallowsuction
tube torundry.
19. Removelargesuctiontube frominletvalve,
See andpointgunintocleaningbucket,
Reducepressureabout1/2,unlockguntrigger
gun untilhoseispumped dry.
20. Lock gun,reducepressureand turn
Prime/SprayKnob toprimeA
21. Layunitback on handlesoinletvalveis
facingupward.Cleanthreadsofinletvalve
withadampcloth.Fillinletvalvewithlight
householdoil.Slowlyincreasepressureto
distributetheoilthroughthepump.Turn
Prime/SprayKnobfromprimeAtosprayBto
distributeoil.Replacelarge suction tube toinlet
valve.
22. TurnPrime/SprayKnob toprimeA,
reducepres-sure,shutsprayeroff. Unplug
sprayer.RefertoPressureRelief.
23. Removeand clean suction setfilterinclean
waterorsolvent withsoft brush.Reassemble.
24. Wipe entireunit, hoseand gun withadamp
clothtoremoveaccumulated paint.
CLEANING VALVES
Followtheseprocedureswhen encountering
problemsindicated inthe troubleshooting
section.
RemovingandCleaningInletValve
1. Besuresprayerisoff.
2. Usinga27millimetersocketorboxend
wrench, removethe inlet valveassembly.

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Remove
InletValve
3. Testmovementofthe valvebypushingonit
fromthe open end ofthevalvehousingwiththe
eraserend ofapencilorascrewdriver.Itshould
moveabout1/16 inch.If itdoesn'tmove,itis
probablyfullofdrypaintorotherdebrisand
shouldbe cleaned orreplaced.
4. Thoroughlycleanthe valveassemblywith
solvent and brush
5. Aproperlyseated valvefilled withwaterand
heldverticallywillnotdripoutthe bottomofthe
valve.If you haveproperlycleaned the valve
and waterdripsoutthe bottom,the valveisworn
and needstobereplaced
6. Installcleaned ornewvalveinthe pumpblock
and thenfillthe valvewithlight oilorsolvent.
7. If none ofthe abovestepswork,see
Troubleshooting.
Cleaning and ServicingOutletValve
It maybe occasionallynecessarytoremoveand
clean theoutletvalveorreplacenormalwear
partsinsidethevalve.
Outlet valve
If possible,leavethe copperwasherunderthe
cap inplace.Atleastbe suretoreplaceitwith
the samesideup.(Thetopwillshowtheimprintof
theendcap, whilethe bottomshouldbe perfectly
flattomatchseatinthe pumpcasting.)SeePaint
PumpAssembly。
MachineMainterance
●Cleaning the machine,partsevery timeafterfinished the paint work.
●Replacethe46#hydraulicoil inside therearpumpbodyafter300hoursofworkto
reduceequipment wear.
●The diaphragmshouldbe changed aftereach400 hoursworks.
●The screwsconnecting the front pumpand therearpumpshouldbe tightened diagonally.
●Pleasecheck everypartshavescrewon the machineverytightlybeforeusing machine.Especiallythe suction tube
and high pressurehose.
●Pleasenoticethatthe inletvalve,outletvalve,diaphragm,areeasilybroken parts,ifthe machine hasworkedmany
times, and the machine havesomeproblemaboutthe pressure, suction, pleasecheck themfirst, then check again
●Clean the motorcooling fan protection guardand the finned motorcasing periodicallytoensurethe maximum
cooling.

DP-airlessPage20 of23
.Troubleshooting
Problem Cause Solution
Pressureissetatzero
pressure. Turnpressurecontrolknobclockwise toincreasepressuresetting.
Motororcontrolisdamaged. Pleasecontactwithyoursupplieror
NingboDino-powerMachineryCo.,ltd
directly.
Electricoutletisnot providing
power.
•Tryadifferentoutlet orplug in
something that youknowisworking
totest outlet.
•Reset building circuitbreakeror
replacefuse.
Extension cordisdamaged. Replaceextension cord.
Sprayerelectriccordis
damaged. Check forbroken insulation orwires. Replaceelectriccordifdamaged.
Powerswitchison and
sprayerispluggedin, but
motordoesnot run, and
pumpdoesnot cycle.
Paint and/orwaterisfrozenor
hardened inpump. Unplugsprayerfromoutlet. Iffrozen do NOTtrytostart sprayeruntilitis
completelythawed oryou may
damage the motor, controlboard
and/ordrivetrain.
MakesurepowerswitchisOFF.
Placesprayerinawarmarea for
severalhours.Then plug inpower
cordandturnsprayerON. Slowly
increasepressuresettingtoseeif
motorwillstart.
If paintishardened insprayer, pump
packings, valves,drivetrainor
pressureswitchmayneed tobe
replaced. Pleasecontact withyour
supplierorcontact withusdirectly.