User manual GRACO 15X303 INSTRUCTIONS PARTS

[. . . ] 2 shows the dispense valves installed in an electronic 2-component proportioning system. In this example, the dispense valves are used as dose valves for components A and B (DVA, DVB), an air purge valve (APV), and a solvent purge valve (SPV). 3 shows a pneumatic schematic of a complete 2-component proportioning system, in which the dispense valves are also used as A and B dump valves, and color change valves. Accessories Connect the Air Lines Clean all lines and connections of dirt, burrs, etc. , and blow them out with clean air before connecting them to the system. The air supply line should contain an air filter to remove harmful dirt and moisture from the compressed air. [. . . ] Always use the lowest possible fluid pressure, and maintain firm metal-to-metal contact between the dispense valve and the pail during flushing to reduce the risk of fluid injection injury, static sparking, and splashing. Start the pump and flush the system with a compatible solvent as explained in the instructions for your pump. Check the system under pressure for leaks; if any are found, relieve the pressure and repair the leaks. Pressurize the system again and make sure the leaking has stopped. Pressure Relief Procedure Flushing Maintenance Clean the Dispense Valve Daily 6 312782C Troubleshooting Troubleshooting Before servicing this equipment always make sure to relieve the pressure. NOTE: Check all possible causes and solutions before disassembling. Solution Repair ON Port C Disassembly 1. Flush the valve with a compatible solvent. Relieve the pressure after flushing and disconnect the fluid and air hoses. Unscrew the cap (C) to remove spring pressure on the valve. NOTE: Another method of removing spring pressure is by applying air to the ON port, to lift the valve needle off the seat. Unscrew the dispense valve from the adapter (A). Also inspect the seat (S) in the adapter for damage. NOTE: See Fluid Mix Manifold Manual 312781 for seat replacement instructions and part numbers. Valve Adapter and Seat 312782C 7 Repair NOTE: See the parts drawings on pages 9 and 10. Hold the needle flats with a wrench to keep it from turning. Unscrew the piston (9, high pressure valves) or retainer (10, low pressure valves) from the needle. Remove the o-rings (7, 8) from the piston (9). Push the needle (22) from the top while pulling it from the bottom of the fluid body (3). Unscrew the needle ball assembly (23) from the needle (22). Unscrew the fluid body (3) from the air body (6). Remove the packing (19), bearing (5), and u-cup (4) from the fluid body. On high pressure valves, remove the o-ring (17) from the air body (6). [. . . ] In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the negligence of Graco, or otherwise. FOR GRACO CANADA CUSTOMERS The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite de ou en rapport, directement ou indirectement, avec les procédures concernées. Graco Information For the latest information about Graco products, visit www. graco. com. TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor. [. . . ]