3M Series 55 Benutzerhandbuch

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Solvent left in the spray gun air passages could result 
in a poor quality paint finish. Do not use any cleaning 
method which may allow solvent into the spray gun air 
passages. Do not expose air regulators and gauges to
solvent as damage may occur.

Cleaning Process 
1.  Relieve the pressure from the spray gun before

servicing.

2.  Refer to your fluid source manual for removal and 

cleaning.

3.  To retain unused material or temporarily store mixed

material, see your Local, State, Federal and OSHA 
guidelines, along with material manufacturer’s
recommendations for storage.

4.  Flush the spray gun. To flush spray gun, run water or

compatible and compliant solvent into the spray gun 
fluid passage while triggering the  
spray gun.

5.  Remove the retaining ring and air cap.
6.  Unscrew the fluid needle tip with fingers.
7.  Dip the end of a soft-bristle brush into a compatible 

solvent. Do not continuously soak the brush’s bristles
with solvent, and do not use a wire brush.

8.  Clean the front of the spray gun, using a soft-bristle 

brush and solvent.

9.  Scrub the retaining ring, air cap and fluid nozzle

with a soft-bristle brush. To clean out air cap holes, 
use a small brush. 

10. Clean the air cap and fluid nozzle after each use. Do not

use metal tools to clean the air cap holes as this may 
scratch them; scratches can distort the spray pattern. 
Do not soak the retaining ring in solvent for prolonged 
periods of time.

11. Thread fluid needle tip on finger tight. Tighten the

nozzle securely to obtain a good seal.

12. Install the retaining ring and air cap.
13. Dampen a soft cloth with solvent and wring-out the 

excess. Wipe off the outside of the spray gun.

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