Sunex Tools SX76 User Manual [en, es, fr]

Operating Instructions • Warning Information • Parts Break down

SX76

HIGH PRESSURE SPRAY GUN

WARNING

ALWAYS READ AND KEEP INSTRUCTIONS BEFORE USING THIS EQUIPMENT

SPRAY GUNS CREATE FLYING PARTICLES. ALWAYS WEAR SAFETY GOGGLES AND BREATHING APPARATUS (USERS AND BYSTANDERS). FLYING PARTICLES CAN CAUSE INJURY

SPECIFICATIONS

Fluid Orifice .............................................. 1.4mm

Air Inlet .................................................. 1/4" NPT

Fluid (Water) Delivery .............. 180-240 ML/MIN

Avg. Air Consumption ......................... 12.5 CFM

Nozzle Pressure ........................................ 50 PSI

Cup Size .................................................1000 ML

SX76: Parts Breakdown & Operating Manual 01/07/13

To reduce the risk of injury, anyone using, repairing, maintaining, or changing accessories on this tool must

WARNING

read and understand these instructions before performing any of these tasks.

Read THIS INSTRUCTION MANUAL Carefully and understand ALL INFORMATION Before Operating THIS Tool. KEEP FOR FUTURE USE.

Always operate, inspect and maintain this spray gun in accordance with American National Standards Institute Safety Code of Portable Air Tools (ANSI B186.1) and any other applicable safety codes and regulations.

During use and while cleaning and ﬂushing spray gun solvents can be expelled. Some solvents can cause eye injury. Always wear eye protection.

Be sure all in the area are wearing impact-resistant eye and face protection.

Even small projectiles can injure eyes and cause blindness. High sound levels can cause permanent hearing loss. Protect

yourself from noise. Noise levels vary with work sur face. Wear ear pro tec tion.

Repetitive work motions, awkward positions and exposure to vibration can be harmful to hands and arms.

Air under pressure can cause severe injury. Al ways shut off air supply, drain hose of air pressure and disconnect tool from air supply when not in use, before changing accessories or when making repairs. Never direct air at yourself or anyone else. Whipping hoses can cause serious injury. Al ways check for damaged or loose hoses and ﬁttings. Never use quick change couplings at tool. They add weight and could fail due to vibration. Instead, add a whip hose and connect coupling between air supply and whip hose, or between whip hose and leader hose. Do not exceed maximum air inlet pressure of 50 PSI.

Always use spray gun at a safe distance from other people in work area.

Maintain spray gun with care. Keep tools clean and oiled for best and safest performance. Follow instructions for lubricating and chang ing accessories. Wiping or cleaning rags and other ﬂammable waste materials must be placed in a tightly closed metal container and disposed of later in the proper fashion.

Do not wear loose or ill-ﬁtting clothing; remove watches and rings. Do not over reach. Keep proper footing and balance at all times.

Slipping, tripping and falling can be a major cause of serious injury or death. Be aware of excess hose left on the walking or work surface.

Do not abuse hoses or connectors. Never carry spray gun by the hose or yank hose to disconnect from air supply. Keep hoses from heat, oil and sharp edges. Check hoses for weak or worn condition before each use, making certain that all connections are secure.

When possible, secure work with clamps or vise so both hands are free to operate tool.

Solvent and paint coatings can be highly ﬂammable when sprayed. Adequate ventilation exhaust must be provided to keep air free of accumulations of ﬂammable materials. Smoking must never be allowed in the spray area. Fire extinguishing equipment must be present in the paint spray area.

Certain painting solvent materials may be harmful if inhaled, or if there is contact with the skin. Always follow the requirements of the Material Safety Data Sheet supplied by your coating material manufacturer. Adequate exhaust ventilation must be provided to keep the air free of accumulations of toxic materials. Always use a mask or respirator whenever there is a chance of inhaling sprayed materials. The mask must be compatible with the material being sprayed and its concentration. Respirator equipment must be NIOSH approved.

Halogenated hydrocarbon solvents - for example: methylene chloride and 1,1,1,-Trichlorethene are not chemically compatible with the aluminum that might be used in spray gun components. The chemical reaction caused by these solvents reacting with aluminum can become violent and lead to an equipment explosion. Guns with stainless steel internal passageways may be used with these solvents. However, aluminum is widely used in other spray application equipment. Check all equipment items before use and make sure they can also be used safely with these solvents. Read the label or data sheet for the material you intend to spray. If in doubt as to whether or not a coating or cleaning material is compatible, contact your material supplier.

Spray gun operators should be given adequate training in the safe use and maintenance of the equipment. Users must comply with all local and national codes of practice and insurance company requirements governing ventilation, ﬁre precautions, operation, maintenance, and housekeeping. These are OSHA Sections 1910.94 and 1910.107 and NFPA-33.

Use of spray guns may cause cumulative trauma disorders (CTD's). CTD's, when using spray guns, tend to affect the upper extremities. Factors which may increase the risk of developing a CTD include:

1. High frequency of the activity.

2. Excessive force, such as gripping, pinching, or pressing with the hands and ﬁngers.

3. Extreme or awkward ﬁnger, wrist, or arm positions.

4. Excessive duration of the activity.

5. Vibration.

6. Repeated pressure on a body part.

7. Working in cold temperatures. CTD's can also be caused by sports activities. Pain, tingling, or

numbness in the shoulder, forearm, wrist, hands, or ﬁngers, especially during the night, may be early symptoms of a CTD. Do not ignore them. Should you experience any such symptoms, see a physician immediately. Other early symptoms may include vague discomfort in the hand, loss of manual dexterity, and nonspeciﬁc pain in the arm. Ignoring early symptoms and continued repetitive use of to a serious disability.

the arm, wrist, and hand can lead

SAFETY INSTRUCTIONS - DO NOT DISCARD - GIVE TO USER

SX76: Parts Breakdown & Operating Manual 2 01/07/13

WARNING

(

CONTINUED

)

To reduce the risk of injury, anyone using, repairing, maintaining, or changing accessories on this tool must read and understand these instructions before performing any of these tasks.

Some dust created by power sanding, sawing, grinding, drilling and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are:

- Lead from lead based paints

- Crystalline silica bricks and cement and other masonry products

- Arsenic and chromium from chemically-treated lumber Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to ﬁlter out microscopic particles.

Handling the brass parts of this product will expose you to lead, a chemical known to the State of California to cause birth defects and other reproductive harm. Wash hands after handling.

AIR SUPPLY

IMPORTANT PRECAUTION INFORMATION - READ BEFORE USING THIS SPRAY GUN:

SPRAY GUN DESCRIPTION

The SX76 is a light weight, general purpose conventional spray gun designed for use in various types of spraying applications.

IMPORTANT: This spray gun may be used with most common coating and ﬁnishing materials. It is designed for use with mildly corrosive and non-abrasive materials. If used with other high corrosive or abrasive materials, it must be expected that frequent and thorough cleaning will be required and the necessity for replacement of parts will be increased.

Pitch pipe back toward air receiver

Air Flow CFM

Length of Pipe (ft.)

50 100 150 200

1/2"

3/4"

1-1/4"

3/4"

1-1/4"

Compressor Unit

Drain

Install drain at

each low point

Oil & Water

Extractor

25 Feet

or More

Oil and Water Extractor should be at least 25 ft.

from the compressor, farther if possible.

Never mount oil and water extractor on or near the air com pres sor.

During compression, air temperature is greatly increased. As the air cools down to room tem per a ture, moisture condenses in the air line, on its way to the spray gun. Therefore, always mount the oil and water extractor at a point in the air supply system where the compressed air temperature is lowest.

Drain air lines properly.

Pitch all air lines back towards the com pres sor so that con densed mois ture will flow back into the air receiver where it can be drained off. Each low point in an air line acts as a water trap. Such points should be fitted with an easily accessible drain. See diagram above.

Drain

SAFETY INSTRUCTIONS - DO NOT DISCARD - GIVE TO USER

SX76: Parts Breakdown & Operating Manual 3 01/07/13

INSTALLATION

This spray gun is rugged in construction, and is built to yield exceptional value. The life of this product and the efficiency of its operation depend upon a knowledge of its construction, use and maintenance.

SUCTION FEED CUP HOOK UP

Air pressure for atomization is reg u lat ed at ex trac tor. Amount of fluid is adjusted by fluid control screw on gun, viscosity of paint, and air pressure.

HVLP

Fluid Suction Cup

Fluid Control Screw

Air Inlet

Atomization

Pressure

Gauge

Air Hose

FOR BEST PERFORMANCE, PLEASE BE SURE TO DO THE FOL LOW ING

BEFORE USING THIS SPRAY GUN

•Tightentheguntothecupsecurelywiththenutandfittingsupplied.

•Besuretohavetheproperairpressureattheguntooperate.Properairpressureforthistoolshouldnotexceed50PSI

•Adjustfluidcontrolscrewandspraywidthadjustmentscrewtoyourdesiredpatternbeforeusingonproduction.

•Cleanallpartsafteruse.

Oil and Water Extractor

ADJUSTMENTS

HIGH PRESSURE SPRAY GUN

The model you have purchased is a professional high volume spray gun. It is designed to spray very efﬁciently with virtually no overspray. To accomplish this, the inlet pressure regulation is critical. Please be sure to read pressure requirement carefully.

Spray width adjustment screw

Turn right for round, left for fan.

Fluid control screw

Turn right to decrease flow, left to increase.

SPRAYING

In normal use, the nozzle wings are hor i zon tal as shown here. This pro vides a ver ti cal fan-shaped pat tern which gives max i mum, even ma te ri al coverage as the gun is moved back and forth par al lel to the sur face being fin ished.

Set inlet pressure at no more than 50 PSI. For op ti mum per for mance, some ma te ri als may spray better at PSI ratings below 50 PSI. If unsure, always test at PSI ratings before using on final production. Try spray. If it is too fine, de crease the air pres sure or open fluid control screw. If the spray is too thick, close the fluid control screw. Reg u late the pat tern width and repeat ad just ment of spray as needed.

Spray pattern may be in fi nite ly adjusted from round to flat.

SX76: Parts Breakdown & Operating Manual 4 01/07/13

OPERATION

Proper han dling of the gun is essential for ob tain ing a good finish. The gun should be held at a right angle to the sur face being cov ered, and moved par al lel with it. For precise con trol of the gun and material, the trigger should be re leased before the end of the stroke.

Hold the gun from 6 to 12 inches away from the surface depending on ma te ri al and at om iz ing pres sure. For a uniform finish, lap each stroke over the pre ced ing stroke, making sure the spray is smooth and wet.

Light Coat Heavy Coat

Start

stroke

6 to 12 inches

Pull trig ger

RIGHT

Even and wet coat

Release

trigger

End of Stroke

CLEANING AND MAINTENANCE

SPRAY GUN

1. Submerge the front end of the gun in solvent just until the fluid connection is covered.

2. Paint that has built up on the gun should be removed using a bristle brush and solvent.

3. Never submerge all of the spray gun in sol vent be cause:  • Thiswilldissolvethelubricantinthepackingsandonwearsurfaces,causing them to dry out and resulting in difficult operation and faster wear.

 • Airpassagesinthegunwillbecomecloggedwithdirtysolvent.

4. Using a rag moistened with solvent, wipe down the outside of the gun.

5. Oil gun daily. Use a drop of lightweight machine oil on: A. fluid needle packing B. air valve packing C. trigger pivot point See Fig. 1 for Location of Above Points.

6. NOTE: Do not soak rubber o-rings or seals in paint thinner. O-rings and seals can be wiped clean with paint thinner but soaking can cause these items to deteriorate over time.

7. Caution: Do not use lubricants which contain sil i cone. Sil i cone may cause defects in the finish ap pli ca tion.

WRONG

FIG. 1

CAUTION…

To avoid cross-threading, all spray gun parts should be screwed in hand tight initially. If the parts can not easily be turned by hand, be sure you have the correct parts, un screw, re align, and try again. NEVER use excessive force in match ing parts.

AIR NOZZLE, FLUID NOZZLE, AIR VALVE ASSEMBLY

1. All nozzles and needles are made to exact stan dards. They should be han dled carefully.

2. To clean nozzles, immerse them in sol vent until any dried material is dissolved, then blow them clean.

3. Do not use metal or sharp instrument to probe any of the holes in the nozzles.

4. Air flow should occur before fluid-flow when the gun is triggered. It may be necessary to adjust the fluid control screw to make sure air flows before fluid.

5. Do not alter the gun in any way.

SUCTION FEED

Turn off air supply. Remove cover of cup. Empty the cup of material. Clean the cup and cover. Turn on air sup ply and spray with proper cleaning solvent. Repeat with clean solvent if nec es sary. Remove solvent, dis con nect gun, re move air cap and clean. Wipe gun and cup with rag dampened with sol vent.

SX76: Parts Breakdown & Operating Manual 5 01/07/13

TROUBLESHOOTING

CONDITION

Spitting

PROBLEMSPRAY PATTERN/

One side of nozzle wing is clogged.

A.) Loose air nozzle. B.) Material around outside of

air nozzle has dried.

A.) Atomization air pressure is set too high.

B.) Trying to spray a thin material in too wide a pattern.

A.) Packing around needle valve is dried out.

B. Fluid nozzle loosely installed, or dirt between nozzle and body.

C.) Loose or defective swivel nut on siphon cup.

SOLUTION

Soak nozzle in solvent to loosen clog, then blow air through until clean. To clean orifices use a broom straw or toothpick. Never try and detach dried material with sharp tool.

A.) Tighten air nozzle. B.) Take off air nozzle and wipe off fluid tip,

using rag moistened with thinner.

A.) Reduce air pressure. B.) Increase material control by turning fluid

control screw to left, while reducing spray width by turning spray width adjustment screw to right.

A.) Back up knurled nut, put a few drops of machine oil on packing, re-tighten nut.

B.) Take off fluid nozzle, clean rear of nozzle and seat in gun body. Replace nozzle and bring in tight to body.

C.) Tighten or change out swivel nut.

Improper spray pattern.

Unable to get round spray.

Will not spray.

Fluid leakage from packing nut.

Dripping from fluid tip.

A.) Gun improperly adjusted. B.) Dirty air cap. C.) Fluid tip obstructed. D.) Sluggish needle.

Fan adjustment screw not seating properly.

A.) No air pressure at gun. B.) Fluid pressure too low with

internal mix cap and pressure tank.

C.) Fluid control screw not open enough.

D.) Fluid too heavy.

A.) Packing nut loose. B.) Packing worn or dry.

A.) Dry packing. B.) Sluggish needle. C.) Tight packing nut. D.) Worn fluid nozzle or needle.

A.) Readjust gun. Follow instructions carefully. B.) Clean air cap. C.) Clean. D.) Lubricate.

Clean or replace.

A.) Check air supply and air lines. B.) Increase fluid pressure at tank. C.) Open fluid control screw. D.) Thin material or change to pressure feed.

A.) Tighten, but not so tight as to grip needle. B.) Replace packing or lubricate.

A.) Lubricate. B.) Lubricate. C.) Adjust. D.) For pressure feed, replace with new fluid nozzle

and needle.

A.) Gun held too far from surface.

Thin, sandy coarse finish.

Thick, dimpled finish resembling orange peel.

SX76: Parts Breakdown & Operating Manual 6 01/07/13

B.) Atomization pressure set too high.

Gun held too close to surface.

A.) Move gun closer to surface. B.) Adjust atomization pressure.

Move gun further from surface.

REF. DESCRIPTION QTY. NO.

1 Gun Body 1 2 Connector Screw 1 3 Sealing Seat 1 5 Gun Head 1 6 Material Nozzle 1 7 Locking Knob Sealing Gasket 1 8 Circlip 1 9 Air Nozzle Gasket 1 10 Air Cap Ring 1 11 Air Nozzle 1 12 Pattern Adjustment Stopper 1 13 Pattern Adjustment Stem 1 14 Pattern Adjustment Seat 1 15 Opening Stopper 4 2 16 O-Ring 4.0 x 4.8 1 17 Pattern Adjustment Knob 1 18 Needle 1 19 Needle Seat 1

REF. DESCRIPTION QTY. NO.

20 Needle Adjustment Spring 1 21 O-Ring 9.0 x 1.8 1 22 Needle Sleeve 1 23 Needle Adjustment Knob 1 24 Trigger 1 25 Trigger Pin 1 26 Air Valve Spring 1 27 O-Ring 4.5 x 1.8 1 28 Air Valve Seat 1 29 Air Valve Stem 1 30 Air Valve Sealing Gasket 1 31 Air Valve Body 1 32 O-Ring 10.0 x 1.8 1 33 Sealing Gasket 5 34 Air Valve Sealing Gasket 1 35 Gun Body Sealing Screw 1 36 Air Inlet Connector 1 37 Connector Nut 1

REF. DESCRIPTION QTY. NO.

38 Connector Screw 1 39 Material Tube 1 40 Pothook 1 41 Screw 2 42 Aerate Tube 1 43 Handwheel 1 44 Hex Head Nut 1 45 Cup Cover 1 46 Sealing Gasket 1 47 Nut 1 48 Material Tube 1 49 Cup Subassembly 1 50 Connector 1 51 Nut 1 52 Brush 1 53 Spanner 1 54 Rubber Boot 1

Only items identiﬁed by part numbers are available separately.

Replacement Parts Available:

RS76NK: 1.4mm Air Nozzle/Fluid Nozzle/Needle Kit (incl. #6-11, 18, 19) RS76AIC: Air Inlet Connector (#36) RS76LA: Lid Assembly (incl. #37-48) RS76SG: Gasket (#46) RS76C: Cup (#49) RS76RK: Repair Kit (incl. # 13, 15, 16, 22, 25-30, 32, 33)

SX76: Parts Breakdown & Operating Manual 7 01/07/13

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