Husky HDS790 Troubleshooting Chart, Storing, Symptom Possible Causes Corrective Action

Manual de Instrucciones y Lista de Piezas Pistola Pulverizadora HVLP Alimentada por Gravedad

Operating Instructions and Parts Manual HVLP Gravity Feed Spray Gun

Para ordenar repuestos, sírvase llamar al concesionario más cercano a su domicilio

Sírvase darnos la siguiente información:		Puede escribirnos a:
-	Número del modelo	Campbell Hausfeld
- Número de Serie o código con fecha (de haberlo)		Attn: Parts Department
-	Descripción y número del repuesto según la lista de repuestos	100 Production Drive
		Harrison, OH 45030 U.S.A.

Maintenance

(Continued)

3.Remove and check the fluid needle for excessive wear at the tip and straightness.

IMPORTANT: If the needle tip is worn more on one side than the other, either the needle is bent or the gun body has been dropped or knocked out-of-line. There are no adjustments that can be made to a bent gun body. Test the needle by rolling on a flat surface. Replace if necessary.

5.Unscrew packing nuts and replace the packing ONLY if a leak will not stop when the nut is tightened (See Figure 5). Do not over-tighten a packing nut because this will restrict movement of the needle.

6.Re-assemble in reverse order of above and use a non-silicone oil on moving parts. Apply Vaseline® or light grease on threaded joints and hose connections.

STORING

1. When not using spray gun, turn the

fluid adjustment knob counter-

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8

9

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4.Check and replace any damaged o- rings and seals. O-rings and seals can be wiped clean but not soaked in solvent.

clockwise to open which will reduce

spring tension on needle fluid tip.

2. Spray gun MUST BE well cleaned

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10

and lightly lubricated.

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4

13 14

11

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14

6 18

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Troubleshooting Chart

Symptom	Possible Cause(s)		Corrective Action
Right or left	1.	Holes in left or right side of the air	1.	Clean. Use only non-metallic point
heavy spray		cap are plugged
pattern	2.	Dirt on left or right side of fluid tip	2.	Clean
Top or bot-	1.	Dried material at top or bottom of	1.	Clean

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31

tom heavy	fluid tip
spray pat-	2. Loose air cap or dirty seat	2. Clean and tighten

	26	22	21
2

125

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28

33

29 30

HVLP Test Cap Kit Kit de test de capuchon HVLP Juego de tapa de prueba HVLP

	tern	3.	Air cap plugged	3.	Clean. Use only non-metallic point
	Split spray	1.	Fan pattern open too far	1.	Partially close the pattern adjustment
	pattern	2.	Fluid turned in too far	2.	Increase fluid
		3.	Atomization air too high	3.	Reduce atomization air pressure
	Center	1.	Fan adjustment partially closed	1.	Open fan pattern adjustment
	heavy spray			2.	Thin to proper viscosity
		2.	Material too thick
	pattern			3.	Increase atomization pressure
		3.	Atomization pressure too low
	Sputtering	1.	Material level too low	1.	Refill
	spray	2.	Container tipped too far	2.	Hold more upright
		3.	Loose fluid inlet connection	3.	Tighten
		4.	Loose or damaged fluid tip/seat	4.	Adjust or replace
		5.	Dry or loose fluid needle packing nut	5.	Lubricate and or tighten
		6.	Air vent clogged	6.	Clear vent hole
Fluid leaking from packing		1.	Packing nut loose	1.	Tighten, but do not restrict needle
nut		2.	Packing worn or dry	2.	Replace or lubricate (non-silicone oil)
Air leaking from air cap		1.	Sticking air valve stem	1.	Lubricate
without pulling trigger		2.	Contaminate on air valve or seat	2.	Clean
		3.	Worn or damaged air valve or seat	3.	Replace
		4.	Broken air valve spring	4.	Replace
		5.	Bent valve stem	5.	Replace

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