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Фрагмент инструкции
Spray so the material wets out nicely without running or sagging. 8. Use the pattern control knob to adjust the spray fan to your desired pattern. 9. Keep the gun tip perpendicular, parallel and 6-8" from the work at all times when spraying as shown in Figure 4. Do not allow your wrist to bend. This will cause the gun to arc across the surface and distribute the material unevenly, possibly creating sags and dry spots. 10. Begin spraying 2-3 inches before the work and continue to the end of the work. Continue the motion for a few inches past the work until you are ready for the return stroke. 11.Maintain an even speed when pray- ing. 12.Overlap e ch stroke by %. This will ensure even covera as shown in Figure 5. Less th 50% as shown in the figure to the right may lead to ........ missed spots or streaky results. ........ Figure 4. Spray technique. NoYes Figure 5. Overlap technique. 13. Spray stroke should have even consis- tency and parallel edges. If it doesn't please refer to Troubleshooting on Page 15. NOTICETipping spray gun may cause material to spill out of the cup. Always hold the spray gun perpendicular to the ground to avoid potential spills and gravity feed problems. Model H7673 HVLP Spray Gun -11 Atomizing Cap and Fan Adjustments The atomizing cap needs to be adjusted for horizontal or vertical spraying patterns. Spraying in the wrong direction may lead to material build up on the atomizing cap horn. Many performance problems are caused by clogged atomizing holes on the atomizing cap horns (see Cleaning on Page 13). Stroke Holes Figure 6. Set up for horizontal stroke direction with vertical fan pattern. Stroke Pattern Control Figure 7. Set up for vertical spray stroke with horizontal fan pattern. Rotating the pattern adjustment control in Figure 7will give you a range between the two patterns in Figure 8. 190 mm Figure 8. Fan adjustment. -12-Model H7673 HVLP Spray Gun SECTION 5: MAINTENANCE Disassemble the gun by unscrewing the fluid control knob, removing the spring and needle. Atomizing Cap Fluid Tip Strainer Spring & Needle Cup Fluid Control Knob EXPLOSION HAZARD! Chlorinated SolventslikeTricloroethaneand MethyleneChloride(methylchlo- ride) can chemically react with alu- minum and may explode. Many parts in spray guns are made of aluminum. Readsolvent label carefully before using solvent. Cleaning Proper cleaning is the best way to ensure trouble free performance from your spray gun. If your gun is not thoroughly cleaned, damage and poor spraying will result. Problems caused by improper cleaning will not be covered by the warranty. Clean the spray gun immediately after each use. To clean your spray gun: 1. Spray a small amount of solvent through the spray gun. Note: Check with local laws regarding this practice. If you are spraying on a regular basis, spraying solvents into the air may be illegal. A cabinet style spray gun cleaner may be required. 2. Disconnect the gun from the compressed air! 3. Unscrew the cup. 4. Figure 9. Disassembly for cleaning. 5. Unscrew the atomizing cap with your fingers and the fluid tip with the service wrench. The fully disassembled gun should look like Figure 9. 6. Rinse these parts thoroughly in solvent then dry with compressed air or let air dry. Note: If the small holes in the atomizing cap become blocked, soak in clean solvent. If the blockage still exists, clear the blockage with a small needle, taking great care to not enlarge or damage the hole. Damage to the hole will create a disrupted spray pattern. 7. Use the cleaning brush with solvent to clean the inner orifice and other hard to reach areas on the outside of the spray gun body. 8. Wipe the rest of the gun body with a shop towel and dry. NOTICE DO NOT soak the spray gun body in solvent. Prolonged exposure to solvent will rapidly deteriorate the spray gun washers and seals. Ignoring this notice will void your warranty. Model H7673 HVLP Spray Gun -13 Lubrication A B C D E F Figure 10. Lubrication points. Lubricate the following areas with spray gun lube after cleaning. A. Atomizing Cap Threads B. Air Valve Packing C. Trigger Pin D. Air Flow Control Valve E. Pattern Control F. Fluid Control Knob After each cleaning apply a thin film of petroleum jelly to the needle spring before reassembling. -14-Model H7673 HVLP Spray Gun Troubleshooting Model H7673 HVLP Spray Gun-15- SymptomPossible CauseSolutionFluttering or Spitting spray. 1. Dry or worn fluid tip seat per- mits air to seep into fluid pas- sage. 2. Material level too low. 3. Fluid tip or strainer obstructed. 4. Dry needle packing. 1. Tighten fluid tip or replace seat with new one. 2. Add material. 3. Clean 4. Lubricate needle. Uneven top or bot- tom pattern. 1. Atomizing cap holes are obstructed. 2. Build-up on top or bottom of fluid tip. 3. Build-up on atomizing cap is on needle seat. 1. Clear holes. 2. Clean. 3. Clean. Right or left arc pattern. 1. Left or right side horn holes are plugged. 2. Build-up on left or right side of fluid tip. 3. Build-up...