Deck 20: Paint Spray Guns

Question 1

Technician A says the size and shape of the part being sprayed often dictates the size of the spray pattern. Technician B says air pressure has little effect on the size and shape of the spray pattern and the resulting surface appearance. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Answer 1

A

Question 2

HVLP guns reduce overspray, ____________________ emissions and reduce material use.

Answer 2

VOC

Question 3

HVLP spray guns not only cut material costs, but that they are also required in some areas.

Answer 3

True

Question 4

Technician A says that a spray gun must be adjusted each time it is used even though the material being sprayed is the same each time. Technician B says that an air cap pressure gauge reading will be the same as the pressure on the wall regulator. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 5

Technician A says that a charcoal vapor respirator is required only when spraying urethane finishes. Technician B says paint manufacturer will specify which respiratory protective equipment should be used when spraying their product. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 6

Technician A says the air flowing out of the air cap on the spray gun determines the size and shape of the spray pattern. Technician B says atomization breaks down the surface tension of a liquid and converts it into numerous tiny droplets making it sprayable. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 7

A spray gun should not be lubricated because it will contaminate the finish when spraying.

Question 8

Technician A says that when cleaning a spray gun manually requires the painter to use leather gloves for PPE. Technician B says respiratoy protective equimpment should be worn when manually cleaning the spray gun. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 9

Technician A says some spray guns may have a pressue gauge built into the handle. Technician B says some spray guns produce an ellipitical spray pattern while others produce a fan shaped or tapered pattern. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 10

Technician A says CFM is a term commonly used to describe the volume of air required for spraying operations. Technician B says that only HVLP spray guns offer a transfer efficiency 35% when used properly. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 11

Technician A says the fluid needle and the fluid nozzle usually come as a set and are matched to each other. Technician B says that the fluid control knob controls the amount or distance the trigger can be moved thus controlling the fluid flow. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 12

HVLP stands for ____________________ Volume Low Pressure.

Question 13

A shop uses 3.5 quarts of solvent per month in a spray gun cleaner to clean the refinish department's spray guns. In a year, the shop will use a total of ____________________ gallons of solvent.

Question 14

Technician A says that a gravity feed spray gun requires a large of pressure to lift the paint from the cup and move it into the fluid stream inside the paint gun. Technician B says that gravity largely replaces air pressure to move the paint from the cup and into the gun fluid passage. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 15

Atomization starts inside the gun at the needle and nozzle.

Question 16

Technician A says that a rotating bell paint system offers a very high level of transfer efficinecy using centrifugal force instead of air flow to apply the paint to the surface. Technician B says that electrostatic painting uses positive and negative charges on the paint and object being painted to attract paint to the part. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 17

While hand cleaning paint guns, the solvent you are using evaporates at the rate of 1/4 ounce per minute, and it takes you one-half hour to clean the gun. You started with 32 ounces of solvent. ____________________ ounces of solvent will be left when three guns have been cleaned.

Question 18

If the air cap horns are set at the horizontal position, the spray pattern will be vertical.

Question 19

Volatile _______ Compounds are gasses released during paint application

Question 20

Looking at the pattern when the product is sprayed into the air will tell the technician if the gun is adjusted properly.

Question 21

Explain what transfer efficiency is and how it reduces environmental impact.

Question 22

List and explain the advantages and disadvantages of using an HVLP spray gun.

Question 23

Explain the steps for hand cleaning a spray gun.

Question 24

Explain the places that need to be lubricated on a spray gun.

Question 25

Write the description for the steps necessary to adjust a spray gun.