Graco 3900 Paint Sprayer User Manual


 
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Spray Tip Selection Table
LineLazer Tip Selection Guide. Sprayer is supplied with tip LL5319. For additional applications, use the tip selec-
tion table as follows:
Note: the last three digits (LL5319
) of the tip part number identifies the line width and ti p orifice (opening).
For exa mple: the line width for tip LL5319 is 4 in. as shown in the table below . The tip orifi ce for tip LL5319
is .019 in.
LineLazer Tip Selection Table
Tip Size
Line Width Used For
221203* 2 inches Sport court -- light film build
LL5213* 2 inches Sport court -- heavy film build
LL5215* 4 inches Alkyd paints only -- light film build
LL5217 4 inches Alkyd paints only -- medium film build
LL5219 4 inches Alkyd paints only -- heavy film build
LL5315 4 inches Most traffic paints -- light film build
LL5317 4 inches Most traffic paints -- medium film build
LL5319 4 inches Most traffic paints -- medium film build
LL5321 4 inches Most traffic paints -- heavy film build
LL5323 4 inches Most traffic paints -- heavy film build
LL5327† 4 inches Most traffic paints -- heavy film build
LL5417# 4 -- 8 inches All paints and high solids traffic paints -- light film build
LL5419# 4 -- 8 inches All paints and high solids traffic paints -- medium film build
LL5421# 4 -- 8 inches All paints and high solids traffic paints -- heavy film build
LL5621 8 -- 12 inches All tra f fic paints -- light film build
LL5623 8 -- 12 inches All tra f fic paints -- medium film build
LL5625 8 -- 12 inches All tra f fic paints -- medium film build
LL5627 8 -- 12 inches All tra f fic paints -- heavy film build
* May requir e 100 mesh filter to minimize tip plugging.
Best for use with LineDriver.
# Best for cold weather applications.
How to Maximize Line Quality and Reduce Tip Wear. Observ e the following suggestions to increas e line quality
and minimize sprayer tip wear.
1. Select a larger tip orifice and run the sprayer at a reduced operating pressure.
2. Running larger ti p sizes (example: use ti p LL5321 @ 2000 psi instead of LL5317 @ 3300 psi) will significantly
increase tip life and reduc e tip plugging. It will also produce a more uniform film build acr oss the line.