309029D Automatic Delta Spray Air Spray Gun ... - Graco Inc.

Setup6. Adjust the Spray PatternWARNINGCOMPONENT RUPTURE HAZARDDo not exceed the 100 psi (0.7 MPa,7 bar) maximum fluid and air pressureof this gun. Higher pressures can cause partsto rupture and result in serious injury.Follow these steps to establish the correct fluid flowand air flow:A. Adjust the fluid flow using the fluid pressureregulator (L) installed in the gun fluid line. Typicalindustrial flow rates will vary with regulator pressuresfrom 5 to 30 psi (34 to 210 kPa, 0.3 to2.1 bar).NOTE: A larger fluid nozzle at a reduced fluid pressurewill maintain the same flow rate, but slow down thefluid stream (velocity). When air is applied, this allowsthe air to act on the fluid longer and improve the atomization.B. Using the air pressure regulator (F), set the fanand atomizing air supply pressure at about 50 psi(345 kPa, 3.4 bar). On manifolds 241696 and241697, the fan and atomization air must be suppliedand regulated separately. On manifold243950, one air line supplies both atomization andfan air. Adjust the pattern length and shape by alteringfan air pressure (or adjusting the fan adjustmentvalve on manifold 243950). Refer to thePressure Drop Chart on page 11 for the regulatorsetting vs gun inlet pressure.If available, use the fluid manufacturer’s recommendationsto set the air line pressure for air sprayapplication.LFig. 87019AFig. 9Continued on page 11.F0199710 309029