Graco Inc 308612, 238338 manual Troubleshooting, Problem, Cause, Solution

Models: 238338

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Troubleshooting

NOTE: Check all possible solutions before disassembling the pump.

Problem

Cause

Solution

 

 

 

Uneven spray pattern

Bead pressure too low

Increase pressure to bead tank, or

 

 

adjust bead pressure regulator

 

 

 

Spray gun will not stop spraying

Gun needle binding

Clean, repair

 

 

 

 

Obstructed or worn needle seat

Clean or replace

 

 

 

Spray gun will not spray

Bead line clogged

Clear

 

 

 

 

Bead valve closed

Open

 

 

 

 

Clogged orifice or needle seat

Clean

 

 

 

 

No trigger or actuator air pressure

Check, clean air lines

 

 

 

 

Wet beads

Drain beads from tank and replace

 

 

with dry beads.

 

 

 

8308612

Page 8
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Graco Inc 308612, 238338 manual Troubleshooting, Problem, Cause, Solution