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Page 7

SB-2-546

*Most common problem.

Left or right side horn holes plugged.
Dirt on left or right side of fluid tip.

Remedies for the top-heavy, bottom-heavy, right-heavy, and left-heavy patterns:

1. Determine if the obstruction is on the air cap or the fluid tip. Do this by making a test

spray pattern. Then, rotate the cap one-half turn and spray another  pattern. If the defect
is inverted, obstruction is on the air cap. Clean the air cap as previously instructed.

2. If the defect is not inverted, it is on the fluid tip. Check for a fine burr on the edge of the

fluid tip. Remove with #600 wet or dry sand paper.

3. Check for dried paint just inside the opening; remove by washing with solvent.

Fluid flow too high for atomization air.

Material flow exceeds air cap's capacity. 
Spreader adjustment valve set too low.
Atomizing pressure too low.
Material too thick.

Atomization air pressure too high.
Fluid flow too low.
Spreader adjusting valve set too high.

*Loose or damaged fluid tip/seat.
Baffle seal installed incorrectly.
Material level too low.
Container tipped too far.
Obstruction in fluid passage.
Dry or loose fluid needle packing nut.

Spreader adjustment screw not seating
properly.
Air cap retaining ring loose.

No air pressure at gun.

Fluid needle adjusting screw not open
enough.
Fluid too heavy for gravity feed.

Fluid tip not tight.

Cup lid loose.
Dirty threads on cup or lid.
Cracked cup or lid.

Inadequate material flow.

Low atomization air pressure.

Too much atomization air pressure.
Gun too far from work surface.
Improper stroking (arcing, gun motion too
fast).

Too much or too fast-drying thinner.
Too much atomization air pressure.

Air pressure too high.
Gun tip too far from work surface.
Gun motion too fast.
Gun out of adjustment.

Packing nut loose.
Packing worn or dry.

Packing nut too tight.
Dry packing.
Fluid tip or needle worn or damaged.
Foreign matter in tip.
Fluid needle spring broken.
Wrong size needle or tip.

Clean. Ream with non-metallic point.
Clean.

Clean.

Clean. Ream with non-metallic point.
Clean.

Horn holes plugged.
Obstruction on top or bottom of fluid tip.
Cap and/or tip seat dirty.

TROUBLESHOOTING

CONDITION

CAUSE

CORRECTION

Heavy top or 
bottom pattern

Heavy right or left 
side pattern

Heavy center pattern

Split spray pattern

Jerky or fluttering spray

Unable to get round spray

Will not spray

Paint bubbles in cup

Fluid leaking or dripping from 
cup lid

Starved spray pattern

Excessive overspray

Excessive fog

Dry spray 

Fluid leaking from packing nut

Fluid leaking or dripping from
front of gun

Balance air pressure and fluid flow. Increase
spray pattern width with spreader adjustment
valve.
Thin or lower fluid flow.
Adjust.
Increase pressure.
Thin to proper consistency.

Reduce at transformer or gun.
Increase fluid flow (increases gun handling
speed).
Adjust.

Tighten or replace.
Install per directions.
Refill.
Hold more upright.
Backflush with solvent.
Lubricate or tighten.

Clean or replace.

Tighten.

Check air supply and air lines, blow out gun
air passages.
Open fluid needle adjusting screw.

Thin material and/or change to larger tip size.

Tighten tip to 12-15 ft-lbs.

Push in or tighten lid.
Clean.
Replace cup and lid.

Back fluid adjusting screw out to first thread,
or change to larger tip size.
Increase air pressure and rebalance gun.

Reduce pressure.
Adjust to proper distance.
Move at moderate pace, parallel to work
surface.

Remix properly.
Reduce pressure.

Reduce air pressure.
Adjust to proper distance.
Slow down.
Adjust.

Tighten, do not bind needle.
Replace or lubricate.

Adjust.
Lubricate.
Replace tip and needle.
Clean.
Replace.
Replace.

Содержание COM-G430-14-02

Страница 1: ...in SB 2 546 OPERATION MANUAL ADVANCED CONVENTIONAL GRAVITY FEED SPRAYGUN English Pages 2 9 MANUAL DE OPERACI N COMPACT PISTOLA PULVERIZADORA CONVENCIONAL AVANZADO CON ALIMENTACI N POR GRAVEDAD Espa ol...

Страница 2: ...logenated Hydrocarbons Static Electricity can be generated by fluid and or air passing through hoses by the spraying process and by cleaning non conductive parts with cloths To prevent ignition source...

Страница 3: ...5 Spreader Valve SP 403 K 1 6 Stud and Screw GTI 408 K5 5 7 Needle Adjusting Screw SP 614 K 1 8 Spring SP 622 K5 1 9 Needle SP 300S K 1 14 18 22 e g 14 1 4 mm 10 Airvalve housing seal SP 612 K 1 11 Sp...

Страница 4: ...Overlap each stroke a minimum of 50 Move gun at a constant speed 14 Always turn off air supply and relieve pressure when gun is not in use PREVENTATIVE MAINTENANCE 1 Turn off air and relieve pressure...

Страница 5: ...Service Tool SPN 7 engage groove behind the Valve Seat 6 Remove Valve Seat 7 Push out the Front Airvalve Seal with a finger 8 Turn the Gun upside down and let the Seal fall out 9 Fit New Front Seal t...

Страница 6: ...ent 14 Fit new Seal to Service Tool 15 Fit Seal to Housing 10 16 Replace Valve 11 17 Replace Valve Spring and screw in Housing 10 18 Tighten Housing 19 Fit Needle 9 20 Fit Spring 8 and Knob 7 21 Adjus...

Страница 7: ...om work surface Gun motion too fast Gun out of adjustment Packing nut loose Packing worn or dry Packing nut too tight Dry packing Fluid tip or needle worn or damaged Foreign matter in tip Fluid needle...

Страница 8: ...paint manufacturer s mixing instrs Properly clean and prepare Cup loose on gun Cup gasket worn or missing below cup Cup threads dirty Too much material flow Material too thin Gun tilted on an angle or...

Страница 9: ...s are a pre moistened hand cleaner towel for painters body men and mechanics that go where you go and no water is needed 29 3100 K6 Scrubs Hand Cleaner Towels HC 4700 1 4 NPT F HC 1166 1 4 NPT M HC 46...

Страница 10: ...nerada por el paso de fluido y o aire por los manguitos por el proceso de pulverizaci n y por la limpieza de piezas no conductoras con pa os Para impedir que las descargas est ticas produzcan fuentes...

Страница 11: ...403 K 1 6 Espiga y tornillo GTI 408 K5 5 7 Tornillo de ajuste de la aguja SP 614 K 1 8 Muelle SP 622 K5 1 9 Aguja SP 300S K 1 14 18 22 ej 14 1 4 mm 10 Alojamiento de la v lvula de aire SP 612 K 1 jun...

Страница 12: ...ecomendada es de 150 200 mm 13 Pulverice primero los bordes Solape cada pasada el 50 como m nimo Mueva la pistola a una velocidad constante 14 Cierre siempre el suministro de aire y alivie la presi n...

Страница 13: ...de la v lvula 6 Retire el asiento de la v lvula 7 Haga salir la junta delantera de la v lvula de aire empu jando con el dedo 8 Ponga la pistola boca abajo y deje que se caiga la junta 9 Instale una j...

Страница 14: ...ta de manten imiento 15 Coloque la junta en el alojamiento 10 16 Vuelva a colocar el husillo 11 17 Vuelva a colocar el muelle de la v lvula y el tornillo en el alojamiento 10 18 Apriete el alojamiento...

Страница 15: ...r pido Pistola desajustada Tuerca de la empaquetadura floja Empaquetadura gastada o seca Tuerca de la empaquetadura muy apretada Empaquetadura seca Punta de fluido o aguja gastada o da ada Materias fo...

Страница 16: ...ante de la pintura Limpie y prepare debidamente Cubeta floja en la pistola Guarnici n de la cubeta gastada o falta debajo de la cubeta Roscas de la cubeta sucias Demasiado flujo de material Material d...

Страница 17: ...Scrubs son toallas prehumedecidas para que pintores encargados de carrocer a y mec nicos se limpien las manos Van donde usted vaya y no se necesita agua 29 3100 K6 Scrubs Toallas para limpiarse las m...

Страница 18: ...Page 18 SB 2 546 NOTES...

Страница 19: ...P gina 19 SB 2 546 NOTAS...

Страница 20: ...S Canada Technical Service Office 195 Internationale Blvd Glendale Heights IL 60139 Toll Free Telephone 1 888 992 4657 U S A and Canada only Toll Free Fax 1 800 368 8401 DeVilbiss Worldwide Sales and...

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