Troubleshooting 6-1 1998 Nordson CorporationAll rights reserved 106 588DIssued 8/98Manual 1-12Section 6TroubleshootingWARNING: Allow only qualified personnel to perform thefollowing tasks. Observe and follow the safety instructions inthis document and all other related documentation.WARNING: High-pressure fluid injection into skin may causeserious injury or death. Always shut the pump off and relievesystem pressure before breaking any hydraulic connections.This section contains troubleshooting procedures. These procedurescover only the most common problems that you may encounter. If youcannot solve the problem with the information given here, contact yourlocal Nordson representative for help.Problem Page1. Pump stops or fails to start 6-22. Pump strokes irregularly when gun is triggered 6-23. Pump output is below specifications or pump surges 6-34. Pump does not siphon properly 6-35. Pump does not stroke when circulation valve is opened 6-46. Pump discharges material into solvent chamber 6-47. Spray pattern fading or narrowing 6-48. Tails appear in spray pattern 6-41. Introduction