Coating HVLP Training

8/6/2019 Coating HVLP Training

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Introd uction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Spray ing M ethods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

When to u se HVLP Equipmen t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

How does H VLP Work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

How to Acqua int the Painter w ith H VLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

HVLP System Com ponen ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Maxum I

HVLP Spr ay Gu n Ad justments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Maxum I Air Cap Ad justments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Spray Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13

Choosing a Pro jector Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Projector Set Recommen dation Cha rt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Cleanin g Your Equ ipm ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

HVLP Spray Equip men t/ Finish Troubleshooting . . . . . . . . . . . . . . . . . . . 17-18

Sherw in-Williams CAPsp ray 5100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19



Sherw in-Williams Portable Ca rt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Mou nting Models 5100, 8100 or 9100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23


Assistan ce/ Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-28

Contents


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The contractor market for HVLP spray systems is the fastest-growing m arket

segmen t in the spray equ ipmen t indu stry. As youll soon realize, HVLP

sprayers represent a tremendous op portun ity to help painters become more

competitive and p rofitable. Used pr imarily for finishing w ork, HVLP sprayerswork h and-in-hand with airless equipment to help contractors reduce the time

and material necessary to complete a job.

The key is minim ized oversp ray. HVLP systems atom ize coatings by mean s

of low a ir pressure (2-10 PSI) (pou nd s per squ are inch) and h igh air volum e

(10-25 CFM) (cubic feet per minute), so the user can expect transfer efficiency

rang ing from 65-90 percent. The result is:

Less time masking and prep work

Less material waste

Less time cleaning up

MORE PROFITS

In addition, the high transfer efficiency of HVLP assists contractors to complywith new clean air laws designed to redu ce volatile organic compou nd s

(VOC) emissions. HVLP paint sp rayers help p rotect the environm entand

paintersby reducing overspray and bounceback.

This manu al will give an overview of HVLP technology and uses; it will also

focus on the sp ecific features and operation of Sherwin-Williams/ CAPspray

HVLP equipment.

Introduction

1

Introduction

TRANSFER EFFICIENCY

Transfer Efficiency %

1 0 0

9 0

8 0

7 0

6 0

5 0

4 0

3 0

2 0

1 0

Application MethodsLiquid Coatings

Note: Transfer efficiencies may vary according to the operator and equipment condition.This chart gives broad ranges only.

Air Spray

Airless Spray

Air-Assisted

Airless

Electrostatic

High Volume

Low Pressure

(HVLP)


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Two types of HVLP systems dominate the painting contractor market:

portable turbines and direct hook-up gun s. The tw o systems use completely

different air sources, but atomize ma terial in similar man ners.

Portab le Turbine

Most comm only found in the p ainting contractor market for portable

app lications, this type of HVLP system uses a centrifuga l blower motor as

the air source.

Direct Hook -up Guns

Direct hook-up guns require an air compressor as the air source. The guns

will generally require from 10-25 CFM. These gu ns are p rimarily u sed in

stationary booth applications.

Direct Hook -up H igh Flow Regulator Guns

High flow regu lator guns utilize an attached , high flow regu lator, whichincreases air flow and redu ces air pressu re to achieve HVLP results.

Regulators deliver a more precise pressure setting than direct hook-up guns

because the regulator is adjustable right at the gun.

Conven tional air spray atomizes m aterial at high air p ressure (35 to 80 PSI)

and mod erates air flow. The nega tive aspect of conventional air spray is

excessive overspray and bounceback that results from high air pressure.

Conven tional air spray creates excessive turbu lence at the air cap, w hich

contributes to excess overspray. Boun ceback results from th e ma terial being

discharged from th e nozzle, moving to the substrat e at a very high velocity

and boun cing off the substra te. The ad vantage of this method is ultra-fine

atomization and a high rate of application. Conventional systems are usedon finishing wor k rang ing in size from sm all jobs to prod uction lines. They

generally are found in stationary applications. Required components are an

air compressor, air hose and conventional spray gun.

Airless sprayers atomize coatings by forcing the paint throu gh a sm all tip

open ing at very high fluid p ressure. Working fluid pressu res range from

1200 to 3600 PSI. Airless spray transfer efficiency is higher than conventional

air spray (see chart on page 1), and offers the ability to spray the wid est

variety of coatings.

Airless sprayers typically are por table with gas, electric and air operated

available. The primary app lication is produ ction work. These systems are

capable of covering large areas in a short am oun t of time. When used

prop erlycorrect fluid p ressure, hose length and tip sizeairless systems

handle the w idest range of applications. As a result, it is rare to find a

commercial painting contractor w ho d oes not ow n or need airless

spray equipment.

Spraying Methods

HVLP

Conventional Air Spray

Airless Spra yers

2


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Spraying Methods

Air-Assisted Airless

Electrosta tic Spray

Air-assisted airless sprayers o ffer fine finish capabilities combined with

a medium production rate. Air-assisted technology uses a combination of

airless and air spray. Fluid pressu re ranges from 700 to 900 PSI, with air

intermixed at 15 to 30 PSI. The system s typ ically are found in stationaryand portable fine finish p rodu ction app lications. Transfer efficiency for

air-assisted airless ranges from 40 to 65%.

Electrostatic spray system s charge the p aint at the tip. The charged p articles

move within th e electrostatic field, wh ich is attracted to the grou nd ed object,

forming an even coating on its entire circum ference. When used p roperly, the

result can be high transfer efficiency with u niform m il thickness.

A variety of electrostatic systems are available, includ ing conven tional airless

and air-assisted. Ap plications include chain link fences, wrou ght iron, lockers

and metal office furnitu re.

When to use HVLP Equipment

HVLP equ ipm ent is classified as a finishing tool. It is not designed to be used

for covering large, flat su rfaces, except w hen using specialty coatings, such as

mu lti-spec, or w here overspray may be hazard ous.

HVLP systems are d esigned to cut labor time, minimize waste, and improve

the final finish on the substrate. In add ition to enhan cing p rofitability, in

man y states HVLP is compliant w ith the most stringent transfer efficiency

requiremen ts. For this reason, you can expect the HVLP sprayer market will

continue to grow at an accelerated p ace.

HVLP Applications Include:

HVLP Features:

Touch-up

Dentil molding

Crown molding

Cabinets

Door jambs

Elevator doors

Frames

Bi-fold doors

Implement equipment

Six -panel doors

Appliances

Porcelain

Furniture

Lockers

Shutters

Dividers

Gutters

General maintenance

Wicker furniture

Shelving

Pipes

Multi-color finishes

Louvered doors

Overhangs

High transfer efficiency

Minimal bounceback

Sprays most materials

Reduced prep and clean-up

Affordable

Inexpensive to maintain

Controlled spraying

Portability

Reduces material consumption by 40%

Three spray patterns available

Works from 15-amp service

Cuts labor t ime

Sprays patterns from 1/4" to 12"

Low fluid pressure means low wear

Moisture-free atomizing air3


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How Does HVLP Work?

4

A pressu re vessel (1-quart cup , 2-quart cup , or pressure pot) supplies

paint to the gu n, wh ere a large amount of low p ressure air intersects with

the paint stream breaking th e paint into sm all particles. This process is

called atom ization.

Since the pressures are much lower, the atom ized pa int has less boun ceback.

This means less overspr ay, greater tran sfer efficiency and better control.

Air diverted to atomize paint

Low pressure stream of paint

Air diverted to pressurize the cup

Pressure causes pa int to flow to spray g unHigh volume of airin from turbine

Little bounceback, greater control

Hig h volume ofair from turbine

Low pressure paint from container


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How to Acquaint the Painter with HVLP

5

The most effective way to show the ad vantages of HVLP equipm ent is to

dem onstrate it. Contractors will see how they can save labor hours, use less

paint and increase profits.

HVLP sprayers are not for every painter. Be certain they a re involved w iththe approp riate finishing app lication. Then m atch the correct un it size and tip

size to the type of materials they use.

After you have d etermined the answ ers to these questions, consider more

specific criteria:

Will the system be used in a stationary or portable application?

Does the paint er need a one-quart cup system, a two-quart,

or a 2 1/2-gallon material capacity for cont inuous use?

Will the painter need extra maneuverability with the gun?

Is maximum hose length a consideration? How often will the painter use the sprayer?

The significance of answers to these and oth er questions are discussed in the

following portion of the hand book. However, the demonstration remains the

most critical comp onent. We can guide you through a d emonstration, but you

still mu st put paint in the cup, be prepared , and be confident. Und er those

conditions, the equ ipmen t w ill sell itself.

Before operat ing a Sherwin-Williams CAPspray HVLP spray system ,

please review the ow ner s manual. The manu al includ es all of the

information needed to p roperly operate and maintain HVLP equipment.

Also keep in mind these basic safety considera tions: Always spray in a well-ventilated area. Always comply with appropriate local,

state and national codes governing vent ilation, fire prevent ion, and operation.

Never spray near sparks, open flames or hot surfaces. Some coating materials

are highly flammable.

Before each use, check all material hoses (if you are utilizing them) for cuts,

leaks, abrasions, cover bulging or movement of couplin gs. If any of t hese

conditions exist , replace the hose immediately. Never repair a paint hose.


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HVLP System Components

Air Source

6

As with m ost sprayers, three distinct comp onents make u p an HVLP system:

air source, air hose, and HVLP spray gun . There are several variations of

these compon ents depend ing up on the manu facturer. We will deal primarily

with Sherwin-Williams CAPspray equipm ent.

The air source is the heart of the system. It provides the CFM and PSI required

to atomize coatings. Depending on the typ e of gun an d the app lication

requiremen ts, there are two typ es of air sourcesair comp ressor and tu rbine.

Air Compressor

Air compressors are used as the air source wh en using either d irect hook-up

gun s or high-flow regu lator systems. Because of high CFM requirements w ith

HVLP direct hook-up guns, the m inimum compressor size recomm ended is

5 HP. Due to the overall size and electrical requirements of 5 HP air comp ressors,

portability is limited. In most cases, direct hook-up gun s wh ich requ ire an air

compressor as the air source are confined to stationar y app lications.

Turbine

The turbine is the most common air source found in the painting contractor

market. A tu rbine is a high-speed centrifugal blower motor w hich p rovides

the gu n w ith high CFM flow at low air p ressures. Because of the high

RPM20,000 RPM in some casesthe air is frictionally heated. This eliminates

all moisture from the atomizing air. The high RPM also increases the atomizing

air temperature by as m uch as 80 degrees, reducing flash time and helping

to minimize blushing . All CAPspr ay tur bines are comm ercially rated,

heavy-duty and designed for continuous u se.

By-Pa ss Turbine w ith Tangentia l Discharge

The tangential discharge turbine is used in the by-pass configuration , usingseparate cooling and intake fans. This turbine comes from the m anu facturer

with a bu ilt-in air ou tlet. This type of turbine is found in the 5100, 8100 and

9100 un its.

Although there are man y variations and uses, the main function of a tu rbine

in HVLP equipm ent is to generate a high volum e of air at air pressures less

than 10 PSI. A critical element in d etermining the amou nt of air pressure that a

turbine can generate is the num ber ofstages. A stage, within a turbine, can be

viewed as an individual compression chamber. The greater the number of

stages within a tu rbine, the higher the PSI the tur bine is able to produ cethe

more PSI the tu rbine prod uces, the heavier the viscosity of material that can

be sprayed .

Cooling Fan

Brush (2)

Motor

Air Exhaust

Air Intake

2 Stage Turbine


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Air Hose

Max um I HVLPSpray Gun

7

Please note that w hile air flow (CFM) and p ressure (PSI) are both imp ortant

in determining the turbines ability to atom ize coatings, pressure is the key.

All manu facturers ra te their tur bines in the ran ge of 50-170 CFM.

Whether the tu rbine p rodu ces 50 or 170 CFM, it will still have enou gh airflow to sup port the gu n. The gun only uses about 25 CFM. Therefore, CFM as

a m easure of p erformance can be misleading. Pressure determines the velocity

of the air moving through the air cap. This creates the turbu lence at the

nozzle, and in turn atomizes the coating. The m ore pressure, the higher the

velocity and the better the ability to break up more viscous coatings.

The air hose often is ignored, bu t it is a key elemen t of the HVLP system.

Its fun ctiontransferring air from the pow er source to the guncannot be

overlooked. The CAPspray hose is specifically designed to w ithstand h eat and

solvents, wh ile remaining lightweight an d pliable.

Hose Length

To determine the m aximu m air hose length with a turbine, use this general

rule of thu mb: double the length of hose that comes standard w ith the

tur bine. Examp le: If 15 feet of hose comes with th e tur bine, the pa inter

can use a m aximum hose length of 30 feet. Just screw the h oses together to

extend the length.

The Sherwin-Williams CAPspray Maxum I Non-bleeder Gu n is the most

versatile, painter-friendly HVLP gun available on the market.

O ptional air inletsprovide non-bleedto bleed conversionfor greater versatility

Stainless steelneedle and nozzleto minimize wear

Click-in air cap for quickpa ttern ad justment

and no guesswork

Teflon seals are solvent-resistantfor easy cleanup

Increased internal airpassages for greaterflow, higher pressureand the ability to handleheavier coatings(better atomization)

External packing nut makesadjustments easy

M ulti-po sition p ick-up tube for longeruse without refill, when spraying atangles (floors, ceilings)

Compo site handle withpatented g rip design forstay-cool operation

(continued


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M ax um I HVLPSpray Gun

(continued)

N on-Bleeder Gunvs. Bleeder Gun

Optional Air Inlet

HVLP guns differ from conventional air spray guns in two main areas:

One d ifference is the size of the intern al air ports. Conventional gun air

port op enings are approximately 1/4''. HVLP guns need m ore air and use

openings

5

/8

'' in size. That makes the air ports m ore than 6 times as large asthose in conventional guns. Keep in mind that HVLP atomizes with a high

volume of air and low pressure.

The second major difference is the man ner in w hich the mater ial is moved

from th e cup out of the nozzle. HVLP un its pressurize the cup,forcing

mater ial to the nozzle. A conven tional gun creates a vacuum to siphon

material to and through th e nozzle.

The term non-bleeder m eans that when the u ser releases the trigger of the gun,

the air flow stop s. With a two-stage trigger, the u ser will first feel air coming

from the air cap; trigger further and material flow will begin. With a bleeder

gun , air flows continuously; the trigger only starts and stops the p aint flow.

The Maxum I Gun offers two air inlet locations: one on the bottom of the

hand le for non-bleeder set up and the second directly behind the air control

valve. To set up the gun in bleeder sp ray mod e, remove the air control knob

and replace it with th e air inlet fitting from the bottom of the gun . Close the

air inlet fitting w ith the plug sup plied w ith the gun. The air hose can now be

attached to the gun . When using this location, the gun becomes a bleeder gun

by always discharging air. This location is particularly helpful spr aying inside

lockers or cabinets.

Anoth er area to utilize the top air inlet is to imp rove atomization w ith very

heavy m aterials. This can be d one by byp assing the air valve so air is d irectly

channeled to the air cap.

Patented conversion feature allows you to changeto a bleeder gun if the job requires it.

8


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Maxum I HVLP Spray Gun Adjustments

Air Control Va lve

M aterial FlowAdjustment

Ex ternal Pack ing Nut

One-Way Valve

To produce the highest-quality finish possible, the spray gun requires the

proper air and m aterial adjustments. You control the air flow with the air

control valve, located at the rear of the gun .

Note the n otch that is cast into th e control knob on the valve. Air flow is at itsfullest when the knob is set at th e 12:00 position. Rotating th e valve 180 either

direction cuts off the air.

The air control valve is used w hen sp raying w ith light viscosity materials or

in confined areas, such as cabinets or lockers. When spray ing light material,

full air is not needed. Restrict the valve un til you achieve proper atomization

without excess overspray.

The amoun t of paint fed

from the cup out the nozzle

is controlled by the material

adjustment knob located atthe heel of the gun, just above

the hand le. To decrease paint

flow, turn the fluid

adjustment knob clockwise.

To increase the paint flow,

turn the knob

counter-clockwise. A little

experimentation will give

you the correct combination

of paint and air necessary

to achieve the desired finish

and fan size. The materialad justm ent can also be used to set a specific trigger pu ll, so the same p attern

size and m aterial flow are consistently obtained on each pass.

The external packing n ut, located d irectly in front of the trigger, is used to

adjust the packing so a seal is maintained aroun d the needle.

The one-way valve, or

serviceable check valve, is

designed to allow air into the

cup, putting the material und er

pressu re, yet not releasing the

cup pressure. CAPspraysone-way valve prevents paint

from seeping up the air tube

into the air passages of the gu n.

It also eliminates any delay in

material flow w hen the gu n

is triggered.

CAPsprays one-way valve is

easily detached for cleaning p urp oses. The valve simply rotates to open for

cleaning and contains a d isk that can be removed and cleaned w ith soap and

water for waterborn e materials or a comp atible solvent for other materials.

MAX

M aximum Air Flow

MinimumAir Flow

MinimumAir Flow

Material flow

Air controlPacking N ut

9


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Maxum I Air Cap Adjustments

Air Cap

Spray Pattern

The Fan Size

10

CAPsprays exclusively designed gu ided a ir cap m akes it virtua lly impossible

for the painting contr actor to misalign. This translates to better spray

pattern control.

The air cap determ ines the spray pattern . It is crucial the air cap rem ains

clean and free of dr ied pa int.

The Sherwin-Williams CAPspray HVLP gun offers a choice of three spr ay

patter ns: horizon tal flat, vertical flat and roun d. To select the desired pattern ,

simply rotate the tw o air cap ears u ntil they click into the d esired p osition.

An u p an d d own position gives you a horizontal pattern. When the ears are

side by side, you w ill get a vertical pattern. And wh en the ears are d iagonal,

the pattern is round . Never trigger the gun while adjusting the spray pattern.

To change fan size, change the distance from the

surface to the gun nozzle. The closer you are to

the sur face, the smaller the pattern becomes.

Moving back increases the fan size.

Trigger pu ll will also vary the fan size.

The greater the trigger pull, the greater

the material flow and fan size.

Another w ay to ad just fan size is to move th e

air cap in (clockwise) for a larger p attern or out

(coun ter-clockwise) for a smaller pattern.

When getting started, the air cap should be flush

with the fluid nozzle. This will give you th e full

range of pattern size control.

Largerpattern

Smaller

pattern

Spray pattern width is adjustablefrom 1/4 '' to 12''.

DiagonalCa p Position

HorizontalCap Position

VerticalCap Position

Round SprayPattern

Vertical SprayPattern

Horizontal SprayPattern


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14/30

Spray Techniques

Spraying Large Areas

Spraying the Outside

Edges of Corners

Spraying the InsideEdges of Corners

Spra ying Slender W ork

12

Spr ay a long p anel or w all in sections. Use horizontal or vertical strokes. Keep

stroke length to 3 feet. Spraying a longer pa ttern may cause uneven coverage

and excessive overspray. Overlap each section by 4 inches. Na rrow pan els are

best sprayed u sing vertical strokes to help prevent too mu ch overlapp ing.

Hold the gun directly facing the corner ed ge

so that the surfaces which form the corner aresprayed along the edge.

Spr ay hor izontally for vertical edges,

and spray vertically for horizontal edges.

Each surface that forms the corner shou ld be

sprayed separately. Spray one surface

vertically. Spr ay the oth er surface with sh ort,

even, horizonta l strokes. When spray ing each

surface, overlap slightly into corner.

Picket fences are sprayed with single strokes,

mad e vertically at an ang le. This motion will

cover the front and one edge. Spray the other

side of each p icket at the opposite angle.

Place a piece of cardboard behind the fenceto catch oversp ray.

3 6 " 4 " 3 6 " 4 " 3 6 " 4 "


15/30

Adjust the material adjustment knob to

the desired sp ray width . Spray tw o

ad jacent surfaces at the same time.

Hold the gun at a sharp angle. Deflect the paint

passing th rough the gr ill or fence with a flat

surface. This will help coat the oth er side.

For cylinders up to three feet high or w ide, spray vertically. For larger

cylind ers, such as storage tanks, spray horizon tally. For small pipe w ork or

tubu lar furn iture, use the round spray p attern set to the proper diameter.

Cutting a line in is a technique best explained w ith an examp le.

Sup pose you are spraying horizontally on a w all, and you are approaching a

door frame. Do not sp ray horizontally to the ed ge of the door frame.

LEAVING TH E AIR CAP H ORNS SET AT HORIZON TAL, CUT IN BY

MOVING TH E GUN IN A VERTICAL FASHION.

This hides the p attern created by cutting in. Feather the spray or red uce paint

flow to gu n before cutting in. Use horizon tally after spraying vertically, leave

air cap ho rns for vertical spray.

Spray Techniques

Spra ying SquarePosts or Steel

Grills and W ire Fences

Spra ying Round W ork

Cutting In

13


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Choosing a Projector Set

Projector Set

14

The projector set determ ines wh at mater ials and viscosities can be sp rayed

from the gu n. A larger projector set has a larger nozzle opening, allowing you

to spray thicker, heavier ma terials.

A p rojector set consists of a need le assembly, fluid nozzle an d air cap.

The Maxum I spray gun comes standard w ith a #3 guided projector set.

You shou ld choose a projector set based on tw o things: type of ma terial to

be sprayed and finish desired. The chart below w ill help you make the

correct choice.

Projector OrificePart Number Set Size Size Inches Type of Coating

0276254 #2 .031 in. Fine Finish

0276227 #3 .051 in. All-Purpose

0276228 #4 .070 in. High Output

0276229 #5 .086 in. Heavy Viscosity Material

0276245 #6 .097 in. Heavy Viscosity Materialand Texture Finishes

N eedle Assembly

Fluid N ozzle Air Cap


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Percent Smallest Unit Projector Set Projector SetMaterial Reduction Recommended Recommended Orifice Size (in.

Pro Mar 200 10-15% 9100 4 to 5 .070 to .086

Pro Mar 400 10-15% 9100 4 to 5 .070 to .086

Super Paint 5-15% 8100 3 to 4 .051 to .070

Classic 99 5-15% 9100 3 to 4 .051 to .070

Ceiling Paint 5-10% 5100 3 to 4 .051 to .070

DTM Water Base 0-5% 5100 3 to 4 .051 to .070Acrylic

Chem Lack 2-4% 9100 3 to 4 .051 to .070

Metal Latex 5-10% 9100 4 to 5 .070 to .086

Style Perfect 10-15% 8100 3 to 4 051 to .070

Classic 99 Alkyd 5-15% 5100 3 to 4 .051 to .070

Industrial Enamel 5-15% 5100 3 to 4 .051 to .070

Quick Dry 5-15% 5100 3 to 4 .051 to .070Enamel

DTM Alkyd 2-5% 5100 3 to 4 .051 to .070

Polane Mfg. Rec. 5100 2 to 3 .031 to .051

Water Base Epoxy 5% 9100 3 to 4 .051 to .070

Nitrocellulous Mfg. Rec. 5100 2 to 3 .031 to .051Lacquer

Opex Production 10% 5100 3 to 4 .051 to .070Lacquer

Water White 10% 5100 3 to 4 .051 to .070Lacquer

Multi Spec 0% 8100 4 to 5 .070 to .086

Tile Clad 10-15% 9100 4 to 5 .070 to .086

Polyurethane 0% 5100 3 to 4 .051 to .070

Sealer 0% 5100 3 to 4 .051 to .070

Latex Primer 5-10% 5100 3 to 4 .051 to .070

Incredicoat 5-10% 8100 3 to 4 .051 to .070

Projector Set Recommendation Chart

15

Notes: All wa ter like coatings require no thinning.

Because of variations in m aterial, recomm endations in this chart shou ld be u sed as

starting p oints. You m ay achieve acceptable results using d ifferent combinations.


18/30

Cleaning Your Equipment

Spray Gun

Filter

16

It is important to clean your spray gu n thorou ghly after each use.

1.Empty the spray material from cup.

2. Pour a small amount of the appropriate solvent in the cup and attach the cup to

the spray gun.

3. Shake and spray t he gun in a well-ventilated area. Back-flushing of the system

is not necessary, so do not restrict the nozz le when cleaning.

4.Repeat the steps above until the solvent appears clear.

5. Wipe the exterior of the cup and the spray gun with the appropriate solvent

until it is clean.

6.M ake sure the air holes and material passages are completely clean.

Never use metal tools or picks to clean the air cap or nozzle.

7. Thoroughly clean the check valve and hoses. Do not soak check valve hoses in

hot solvents. Failure to clean check valve will result in problems the next timeyou use the gun.

It is a good idea to lubricate any threaded parts on

the sprayer with p etroleum jelly wh en you p ut them

back together. This helps keep them working

properly. However, do not use any lubricants

containing silicone, which can cause problems when

used w ith some paints.

The cup gasket must be replaced periodically due to

norm al wear. It is imp ortant to inspect the gasket

du ring each cleaning.

If material leaks from around or through the packing

nu t, tighten th e packing nu t slightly. Squeeze the

trigger to see if the leaking has stop ped . If it has not,

continue to tighten the packing nut until the leaking

stops. Be careful not to over-tighten the packing nu t

or the need le will stick in the packing. If ad justing the packing nu t does not stop

the leak, replace the packing.

1.Remove the filter as shown.

2. Use air to blow material residue from the filter,

or tap the particles out. For material that is not

easily blown or knocked loose, try soapy wateror mineral spirits. Allow filter to dry before

placing back in unit. Filters should not be

cleaned with highly flammable solvents. If the

filter does not come clean using these methods,

install a new filter.

3. Once the filter is cleaned, insert it back into the

end from which it was removed. Note that the

two-stage filter found on the gun atomizing air

chamber needs to go in with the green side on the inside.

CupGasket


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HVLP Spray Equipment Troubleshooting

17

Little or no material out of nozzle. Out of paint. Fill cup or pot with paint.

Air cap screw ed clockw ise too far. Ad ju st air cap .Check valve plugged. Clean or replace check valve assembly

Material viscosity too heavy. Thin material. Try Paint Mate as an

additive for latex.

Nozzle plugged. Clean nozzle.

Cup or pot lid is loose. Tighten cap lever or pot wing nuts.

Pressure Pot System:

Fluid hose clogged. Clean by flushing with water or solvent

or replace hose.

Regulator not ad justed. Adjust regulator properly (10-15 psi).

Pot gasket worn. Replace.

Pick-up tube bottomed out on gallon can. Pour paint into pot or shorten tube.

No air pressure in pot. Inspect air tube or pot gasket;

clean or replace.

Paint leaking from front of gun. Needle or nozzle worn. Replace.

Needle sticking. Adjust needle packing; check for

bent needle.

Im prop er need le or nozzle size. Rep lace w ith correct size for mater ial.

Loose nozzle. Tighten.

Loose packing nut. Tighten.

N eed le not closing properly. Loosen packing nut, replace need le

spring, remove dried paint from needle

Paint leaking from packing nut. Packing damaged. Replace.

Poor spray pattern. Air holes in air cap ears are clogged. Remove and clean air holes.

Nozzle is clogged. Clean with appropriate solvent.

Damaged nozzle or needle. Remove and replace.Air cap screwed in too far. Adjust air cap to proper setting.

Gun too far from surface. Move gun closer (within 6").

Pulsating spray pattern. Loose or damaged packing. Adjust or replace packing.

Pattern off center; heavy to one side. Air cap holes plugged. Clean holes in cap.

Gun not held perpendicular to surface. Posit ion gun correct ly.

Damaged air cap. Replace.

Pattern heavy in the middle. Too much fluid pressure. Reduce pressure.

Gun spitting paint. Check valve not operating properly. Clean or replace valve assembly.

Material too thick. Thin material. Try Paint Mate

as an add itive for latex.

Paint build-up on air cap. Improper ad justment of the cap. Adjust per manual instructions.

Excessive overspray. Gun too far from surface. Move closer.

Air pressure too high. Reduce air pressure to level that

adequately atom izes coating.

Material too thin. Add unthinned material.

Restricted or no air flow. Air control valve turned off. Adjust air control valve.

Air filters clogged. Clean or replace filters.

Problem Cause Solution


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HVLP Spray Equipment/ Finish Troubleshooting

18

Note: For fast-drying automotive materials and some lacquers, prepare material to be

sprayed according to ma nufacturers recommendation. The hot air produ ced by the

turbine qu ickly dries the solvents required to thin these materials. We recommend

that you thin these m aterials 5% to 10% more than the recommend ed instructionsof the man ufacturer, or use a retarder.

Filter warning light on. Air filters clogged. Clean or replace filters.

No trigger pull. Material ad justment knob too tight. Turn counter-clockwise.

Unit has no power. Blown fuse. Check and replace fuse.

Cup doesn't retain power. Worn cup gasket. Replace.

Cup ears bent. Straighten (do not over-tighten).

Excessive arcing/ sparking. Worn turbine brushes. Replace brushes.

Damaged commutator. Replace turbine.

Finish Troubleshooting:

Orange peel. Paint drying too fast. Use slower solvent or retarder.

Gun too far from surface. Move closer.

Material too heavy. Reduce viscosity. Try Paint Mateas an add itive for latex.

Dry spray with lacquer. Solvent flash too fast. Add retarder to slow flash time.

Runs and sags. Material too thin. Add unthinned material.

Moving gun too slow. Speed up passes.

Too much material. Reduce material flow by adjusting

material adjustment knob.

Pinholing and solvent pops. Trapped solvents. Apply material in lighter coats allowing

solvents time to evaporate.

Pigment settling. Possible bad product. Replace.

System contamination. Thoroughly clean all parts.

Fish eyes. Possible silicone contamination. Use solvent to clean all parts.

Blistering. Moisture in/ on spray surface. Dry surface completely.

Incompatib le topcoats or undercoats. Ensure coat ings compatib ility.

Lumpy, coarse surface. Dirt on spray surface. Thoroughly clean surface.

Mottled surface finish. Too much thinner. Reduce thinner.

Poor spray technique. Always square gun with spray surface.

Problem Cause Solution


21/30

Sherwin-Williams CAPspray 5100 SM IS No. 176-5064

19

A comp act un it for mid -size jobs, the 5100 offers the

pain ter a great deal of versatility in the typ e of work,

yet is comp act and completely portab le. Increased

performance allows the contractor to spray stains,sealers, lacquers, oil-based and finish-grad e latex.

A ru gged, two-stage by-pass tu rbine delivers amp le air

pressure and volume to handle higher viscosities better

than any comp arable un it. The 5100 features a

lightweight, tough cast and aluminu m and steel

housing, center mou nted h and le for easy carrying, and

an integrated gu n/ cup holder. Cart mounting is optional

The 5100 offers the p ainting contractor m any op tions for

a var iety of jobs. For residen tial work: cabinets, doors

and woodwork, appliances, porcelain, wicker, louvers,

etc. For comm ercial work: elevators, metal cabinets,

woodwork, equipment, multi-color finishes, dividers,

etc. And for the ma intenance painter, the 5100 will make

short work of lockers, metal structures, equipment,

framing, metal dividers, pipes and many more items.

Features:

Maxum I spray gun, which includes a 1-quart cup with multi-position pick-up tube

15-foot high-flex air hose

Two-stage tangential by-pass turbine

Portable unit or power pack with carrying handle

Int egrated cup holder

Built-in noise reduction system

Specifications:

Number 3 guided air cap system for most coatings. Number 3 provides

.051-inch orifice size.

5 PSI

9.0 AM PS (15 AM P circuit, 110V)

Weight: 18 lbs.


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Sherwin-Williams CAPspray 8100 SMIS No. 176-5072

2 0

The 8100 is ideal for jobs that require continuous sp raying an d the ability to

handle d ifficult-to-atomize m aterials. It sp rays stains, clear coats, lacquer s,

oil-based epoxies and mu lti-color coatings. Also app lies most w ater-reducible

coatings, including waterborne lacquer and finish-grade latex.The large or sm all contractor tak ing a w ide var iety of jobs w ill benefit from

the 8100. Meant for continuou s use, the 8100 will become an invaluable

painting partner for residential, commercial or maintenance painting. Meant

for large jobs, the 8100 comes with 30 feet of air hose (can be upg rad ed to 60

feet) giving the contractor a great deal of m aneu verability.

Features:

Maxum I spray gun, which includes 1-quart cup with

multi-position pick-up tube

Filter warning light tells you when to clean or change

air filters


Three-stage tangential turbine


Tough metal housing


Optional cart mounting

Specifications:

Number 3 guided air cap system for most coatin gs.

Number 3 provides .051-inch orifice size. 6 PSI

10.5 AM PS (15 AM P circuit, 110V)

Weight: 22.5 lbs.


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Sherwin-Williams CAPspray 9100 SM IS No. 176-5080

21

The 9100 is the most p owerful portab le turbine system available. It has an

exclusive, 4-stage tangential turbine that p rodu ces the kind of performance

needed to spray continu ously and to atomize coatings with a minimal

amou nt of reduction. Sprays stains, clear coats, lacquers, oil-base, andmu lti-color coatings. Also app lies most w ater-reducible coatings, includ ing

waterborne lacquer and finish-grade latex.

The 9100 offers you versatility, since it mounts d irectly to th e Portable Car t

and uses up to 60 feet of air hose. With the qu iet, paten ted, noise-reduction

system, you can use the 9100 in places where other tu rbine systems would be

too noisy. And the integrated gun holder prevents gun d amage w hen

transporting or storing.

Features:Maxum I spray gun, which includes 1-quart cup with multi-position pick-up tube

Filter warning light tells you when to clean or change air filters


Four-stage tangential by-pass turbine



Specifications: Number 3 guided air cap system for

most coatings. Number 3 provides

.051-inch orifice size.

8 PSI

12.4 AMPS (15 AM P circuit, 110V)

Weight: 23.5 lbs.


24/30

Sherwin-Williams Portable Cart SM IS No. 176-5098

2 2

The Portable Cart is compatible with the 5100, 8100 or 9100 for complete

mobility around job sites. Built-in air comp ressor and 2 1/2-gallon pressure pot

allows fast, continu ous sp raying for larger jobs. Higher fluid PSI results in

faster application rates with the pressure pot.Features:Lightweight construction

Semi-pneumatic tires (no flats)

30-foot fluid hose

Fold-down handle for storage or t ransportin g

Compressor filtered for longer life

Wide cart for better stability

Set-up for the Portable Cart is fast and simple.

1. Convert the spray gun from the Maxum I cup gun to a pressuregun (see cart manual).

2.Mount the cart bracket to the bott om of the turbine as shown in

the diagram on p. 23.

3. Plug turbine power cord into cart outlet.

4. Connect the compressor air hose into the pressure pot inlet.

5.Attach the material hose to the material outlet fitting of

the pressure pot, and to the material inlet of the gun.

6.Attach the turbine air hose to the air outlet fitting of the turbine,

and to the air inlet fitting on the handle of the gun.7. Place up to 2.5 gallons of paint int o the pressure pot.

Note: When using a 1-gallon can in the pressure pot, make sure the pick-up

tube does not bottom out on the can, obstructing the flow of paint to the gun.

In this instance the pick-up tube must be reduced by 1/4''. If using a pot liner,

pour the paint directly int o the liner and secure the pressure pot lid.

8. Plug the cart power cord into a 110-volt power supply. Turn

cart and tu rbine power switches to ON position.

9.Adjust the power regulator to approximately 6 PSI for

light-viscosity materials (lacquers or stains). Use 8 to 15

PSI for heavier paints (enamels to latex).

The correct pressure setting is critical when using the

pressure pot. Always start w ith the lowest p ossible

setting depend ing on you r material viscosity.

The fluid pressu re is adjusted by the regu lator located

on th e lid of the pressu re pot. Turn clockwise for higher

PSI and counter-clockwise for lower PSI.

Materi al Vi sco si ty Gau ge Settin g Flu id Pres su re

Light 3-10

Medium 6-15

Heavy 10-25

Decrease

Increase


25/30

Mounting Models 5100, 8100 or 9100

M ounting a Turbineon Your Car t

Attaching theM ounting Plate

Placing the Turbine

on the Cart

23

Your cart mou nting hard ware includ es two sp ring clips, four screws and a

mou nting plate.

If you r tur bine looks like this:

you w ill need to use the

mounting plate only.

1. Remove the two screws and foot pads from un derneath the tu rbine exhaust

pipe side of the turbine.

2. Insert the screws through th e foot pads and moun ting plate and thread

them in to the hou sing. Tighten securely. Be sure to keep the curved edge of

the plate pointing u p.

1. Insert the curved ed ge of the mounting p late through the slot on the front

edge of the cart base and set the u nit dow n on the cart.

Spring C lip Screw M ounting Plate

Turbine Exhaust Pipe

Foot Pads

Screws

M ounting Plate


26/30

2 4

The 3100 is designed to be u sed in conjunction with any H VLP un it.

It consists of a compressor, two-qu art cup and connecting hoses. A 30-foot air

hose prov ides air from the comp ressor to the two-qua rt cup, and a 6-foot

fluid hose feeds m aterial from th e cup to the gun . Air to the gun is suppliedby the host H VLP turbine.

The 3100 doub les the reservoir capacity of standard HVLP gun s and red uces

arm an d hand fatigue by removing the reservoir from the gu n. This also

provides greater freedom to paint inside cabinets and in other areas.

Features: 2-quart pressure cup assembly

30-foot air hose

6-foot fluid hose


Can be used with any HV LP unit

Sherwin-Williams CAPspray 3100


27/30

For ordering, ap plication, technical and service informa tion,

Sherwin-Williams store personnel can speak d irectly to SprayTech techn ical

specialists by calling toll free:

1-800-U-CALL-SW (1-800-822-5579)

Contractor custom ers with qu estions concerning ap plications, technical or

service information can call toll free:

1-800-292-4637

The Tough Customer Guarantee is an exclusive in th e spray equ ipment

industry. This maintenance warranty covers all parts and repairs, including

labor, for one year from the d ate of purchase. The contractor simply need s to

send in th e conven ient registration card tha t accomp anies each unit. Store

person nel assist the contractor in completing th e Free-Maintenan ce I.D. card.

Tough Customer

does n ot cover unit clean-up, hoses, filters, check valves,gaskets, projector sets or packings or repairs for m isuse or neglect.

CAPspray also offers a one-year limited warranty covering defects in material

or w orkmanship. See the equipment own ers man ual for details.

Assistance/ Warranty

W hen a CustomerNeeds Help

Tough Customer

Guarantee

2 5


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2 6

Notes


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2 7

Notes


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Notes

Coating HVLP Training

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