Operating Instructions and Parts Manual

HVLP Gravity Feed Spray Gun

Instructions d’Utilisation et Manual de Pièces

Pistolet Vaporisateur à Alimentation par Gravité HVLP

Manual de Instrucciones y Lista de Piezas

Pistola Pulverizadora HVLP Alimentada por Gravedad

Operating Instructions and Parts Manual

HVLP Gravity Feed Spray Gun

 

 

Notes Notas

Preparation (Cont.)

properly.

2Strain material through cheese cloth or a paint strainer.

3.

Fill the canister about 3/4 full and

 

start the air compressor.

4.

Set up a piece of cardboard or

 

other scrap material to use as a tar-

WATER/OIL IN COMPRESSED AIR

All compressor pumps discharge some condensed water, oil or contaminates with the compressed air.

IMPORTANT: This condensation will cause “fish eyes” to appear in the paint job. Install appropriate water/oil removal equipment and controls as necessary for the intended application. Locate filter as close to spray gun as possible.

 

NOTICE

Failure to install appropriate water/oil removal equipment

 

may result in damage to machinery or workpiece.

get and adjust for best spray pat-

tern.

5. Test the consistency of the material

by making a few strokes on a card-

board target. If material still

appears too thick, add a small

amount of thinner. THIN WITH

CARE!! Do not exceed paint manu-

factuer’s thinning recommenda-

tions.

FAN DIRECTION

The direction of the fan (horizontal or vertical) can be changed by loosening the lock ring and turning the air cap 90 degrees (See Figure 3). Hand tighten lock ring after adjustment.

Air Cap

Horizontal Fan

Vertical Fan

Lock Ring

Air Control

Knob

Increase

Decrease

Air Flow

Air Flow

Figure 4 - Air Adjustment on Spray Gun

2.Set pattern size to desired shape. For full pattern, open pattern con- trol knob by turning counterclock- wise. For a round pattern, turn pat- tern control knob clockwise

(See Figure 6).

3.Turn fluid control knob fully clock- wise until closed (See Figure 6).

4.Trigger a short burst while turning fluid control knob counterclock- wise. Observe the spray pattern on the target and adjust the fluid con- trol knob until the desired pattern (atomization) is obtained (See Figure 7).

If the spray is too fine (excessive over- spray), caused by too much air for the

Pattern control knob

Fluid control knob

Figure 6 - Pattern Size

Paint too

Correct

Paint too

fine

 

coarse

Figure 7 - Pattern Consistency

(Atomization)

amount of paint being sprayed, reduce the air pressure or open the fluid con- trol to spray more material.

If the spray is too coarse (spitting globs), reduce the amount of material with the fluid control knob or thin the

Figure 3

PATTERN ADJUSTMENT

1.Adjust air pressure to the spray gun according to the recommendations supplied with the spray material.

This air pressure usually falls between 40 - 60 psi.

Do not exceed

! WARNING spray gun maxi-

mum pressure.

Adjust air pressure with the trigger pulled and air control knob (if applicable) fully open. If reduced air pressure is desired for some areas of the spray job, use the air com- pressor regulator or air control knob to reduce pressure as neces- sary (See Figure 4).

 

Vent Hole

 

Cup

Air Cap

 

 

Pattern Control Knob

 

Fluid Control Knob

Fluid Tip (Nozzle)

Air Valve Packing Nut

 

Fluid Packing Nut

1/4” NPS Air Inlet Fitting

Trigger

Figure 5 - Gravity Feed Spray Gun

 

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Husky HDS790 specifications WATER/OIL in Compressed AIR, FAN Direction, Pattern Adjustment