How does the 9524 apply a uniform coating with just one spray gun?
The 9524 Spray Unit uses a shuttle head that attains speeds of up to 160 feet per minute. This allows the single spray gun to sweep the width of the PCB while the board moves forward as little as half an inch. Because the spray pattern from the heated gun is approximately 2.5-3.0 inches wide, the entire PCB may receive as many as 8 coats of LPISM during the spray process. At typical conveyor speeds, the board will receive 4 coats of LPISM. Simplicity of setup, speed of operation and uniformity of performance all favor the use of a single spray gun system. This system is not subject to multiple gun spacing, placement, adjustment and pattern problems that can all lead to inconsistent coating thickness. The table below shows the mean result of a thickness uniformity test carried out across the surface of 10 panels 24 x 18 spray with 9524S spray system.