This dryer operates on an 8 hour cycle(4 hours drying, 4 hours regenerating) so I had to wait for an hour or so to make sure the regenerating tower was coming up to the proper temperature. I then asked the customer to bring the HB-5000 blower purge dryer on line. So how was moisture appearing downstream of the dryer? The puzzle was still not solved. In this case, the moisture indicator on the dryer was blue. Pink crystals indicate that wet air is exiting the dryer. Blue crystals mean the dryer’s outlet air is dry. This is a small clear tube filled with color changing silica gel crystals. Next, I looked at the visual moisture indicating stick on the dryer’s gauge panel. Too much pressure in a regenerating tower of heatless dryer causes problems. I needed to confirm that the each tower pressure gauge read zero during regeneration. Now, I watched the heatless dryer to make sure it was cycling properly. Next, I checked the automatic condensate drains on the after-cooler separators and pre-filters. I started by looking at the compressors to confirm operating pressures, temperatures, and flow rates to the dryers. Had I been in his shoes, I’d have felt the same way. The customer insisted something was wrong with our dryers. Still wet air was somehow getting downstream. The operator then put heatless dryer on line. When I arrived on site, the customer told me that he could not maintain the specified -40 dew point with the blower purge dryer. This customer has a 5000 SCFM Van Air Systems, model HB-5000, externally heated blower purge dryer and a 5000 SCFM Van Air Systems, model HL-5000, heatless dryer as a backup. Case 1: Wet air downstream of the dryerĪpplication: Dry 5000 scfm of compressed air to -40F Pressure Dew Point (PDP) Here are some descriptions of a few recent troubleshooting calls I have personally made, where the systems approach worked well. This means looking at a complex range of problems and solutions, not just what you suspect the problem to be. The key to helping the customer is to take your time and properly analyze the installation. I first try find a solution over the phone, but sometimes it actually requires a on-site inspection of the customer’s plant air system. Over the years we have built a great reputation for helping customers solve issues with their compressed air systems regardless of what brand equipment has been installed. I get calls on every make and model imaginable. Machinery Like Press Brakes, Lathes, Shears, Plate Rolls, Angle Rolls, Saws, Cold Saws, Vertical Band Saws, Horizontal Band Saws, Shears, Tube Benders, Grinders, OBI Presses, Hydraulic Presses, Drills, Heavy Duty Industrial Equipment, Vertical Mills, Horizontal Mills, Surface Grinders, CNC Machinery, Blast Cleaning Equipment, Vibratory Equipment and much more! We carry brands like Wysong, Niagara, Bliss, Clearing, Timesaver Belt Grinders, Amada Press Brakes, Amada Shears, Leblond Lathes, Clausing Lathes, Bridgeport Mills, Scotchman, Federal, Clausing Metosa, Hardinge, Dake, Hannifin, Greenerd Presses, Rousselle, Haeger, Brown And Sharpe, Blanchard Grinders, Cincinnati Press Brakes, Chicago Dries & Krump Press Brakes, Box and Pan Brakes, Di-Acro, Pacific Press Technologies Press Brakes, Denison Hydraulic Presses, Benchmaster Punch Press, Kenco, Minster Presses, Monarch Lathes, Webb Rolls, Lown rolls, Wysong Rolls, Wysong Shear, Pines Benders, Leblond Lathes, Powermatic Band Saws & Drills, fabricating equipment, forming, forming equipment, metalforming equipment, metal forming equipment, Pacific Press Technologies, Pacific Press and Shear, pressroom equipment, pressworking, press working, press brake, hydraulic press, and many more.I’m asked quite often to troubleshoot compressed air dryers when they're not working. Sterling machinery carries all types of New & Used fabricating, Metalworking, and Chipmaking machinery.
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