Campbell Hausfeld HV2100, HV2105 Spraying Technique, Running Multiple Spray Guns with a Turbine

Operating Instructions and Parts Manual HV2100, HV2105

HVLP Paint Sprayers

Operation (Cont.)

13.Pull the trigger. Notice the pattern has become smaller. (You can continue reducing the material flow and move the spray gun even closer to the surface and the pattern will keep getting smaller).

14.Rotate the air cap to a diagonal position (See Figure 2).

15.Every so often, turn the material flow knob to a different position. Also, change the distance of the spray gun from work surface. Notice how doing this changes pattern size.

There is one additional control to know. If you loosen the air cap locking ring, approximately 1-2 turns, you can control the fan pattern size and trim or feather the edge of the fan pattern itself. This should be considered a secondary control, the primary fan pattern size being adjusted between fluid flow and distance of the spray gun from the work piece.

!WARNING

Even when the turbine is turned off, pressure will remain in the spray cup. When trigger is pulled back, a stream of fluid will flow. To prevent accidents, turn material flow knob clockwise until it is completely closed, locking trigger in closed position.

NOTE: It is not necessary to empty and clean your spray gun when you pause between applications. Be sure, however, to clean your spray gun thoroughly at the end of your work session.

NOTICE	Clean spray gun
	thoroughly at end

of work session. Do not allow coating to dry in spray gun overnight or at any time when not in use.

Extra caution should be taken when spraying coatings that have a catalyst or hardener added since many of these coatings have short pot life. These

coatings can harden in your spray gun quickly, making cleaning difficult or impossible. Read manufacturer’s coating instructions to help determine how quickly a particular coating will harden in your spray gun.

SPRAYING TECHNIQUE

Practice is the key element in achieving a proper spray technique. Never try to rush the spray finishing process. Learn the properties of the coating you will be spraying. Build up layers of material (3-4 applications, or more if needed). Sand between coats, if needed, and allow proper drying time between applications.

Remember to keep the distance of the spray gun the same when moving across your work (called a “pass”). Do not rotate or turn your wrist from side to side (See Figure 3). Move the spray gun across your work from end to end. Be sure to maintain the same speed of movement. This will ensure an even application of coating. Always release the trigger at the end of a pass.

Figure 3 - Proper Spray Technique

Continue spraying in the opposite direction overlapping your previous coat by 1/3 to 1/2. When finished, you should have an even wet coat on your work. If you have dry spots, you have overlapped too widely.

If you have heavy or wet spots, you have overlapped too much. When spraying a large or pre-assembled piece, start at the top and work down. Try to spray the hard-to-reach surfaces first. Keep in mind that a light, wet film will generally produce better results than a heavy, wet coat. When spraying a vertical surface, apply a thin“tack” coat first, followed by a normal light wet coat. This technique will help prevent “runs” and “sags.”

When using your Spray Gun you control five variables.

1.Fluid flow

2.Distance of the spray gun from your work. (4"–8" is average. Closer if necessary.)

3.Pattern Direction (vertical fan, horizontal fan and round)

4.Speed of application

5.Fan pattern control (adjust air cap ring)

NOTE: Items 1, 2, and 4 directly relate to each other.

RUNNING MULTIPLE SPRAY GUNS WITH A TURBINE

It is possible to run the 4-stage turbine system with two spray guns at the same time by installing “Y” Connector to the turbine outlet port. IMPORTANT: If the “Y” connector is installed and only one spray gun operated, the 2nd outlet must be capped or closed so that performance to the single spray gun will not be affected.

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