Operation 4-1Part 1075735-02 2016 Nordson CorporationSection 4OperationWARNING: Allow only qualified personnel to perform the following tasks.Follow the safety instructions in this document and all other relateddocumentation.StartupWARNING: This equipment can be dangerous unless it is used inaccordance with the rules laid down in this manual.WARNING: Do not operate the spray gun if the resistor and multiplierresistances are not within the ranges specified in this manual. Failure toobserve this warning may result in personal injury, fire, and propertydamage.Before turning on the control unit, make sure that the booth exhaust fan is on, powder recovery system is operating, and powder supply in the feed hopper is adequately fluidized.Refer to the appropriate equipment manuals for startup procedures.1. Make sure the cable, feed hose, and air tubing are correctly connectedto the spray gun, powder pump, and control unit.2. Turn the control unit main power switch to the on position.3. Adjust the control unit air pressure regulators:NOTE: The pressures given are average starting points. Pressures willvary according to required film build, line speed, and part configuration.Adjust the pressures to obtain the desired results.Air Pressure Typical Setting DescriptionFlow rate 1.4 bar (20 psi) Controls the volume of thepowder delivered to the spraygun.Atomizing 2.1 bar (30 psi) Controls the velocity anddensity (powder-to-air ratio)of the powder.