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Simple Lubricator Troubleshooting Problem Possible cause Remedy Oil-Fog Lubricator No DripRate Oil adjustment knob fully Readjust knob. clockwise Sight dome Low oil level Check oil level. Body Airflow through lubricator too Use smaller size lubricator. low Remove bowl and sight feed Flow adjustment dome and clear sensor syphon tube. Check valve Blocked oil filter screen Remove sight feed adjustment dome and clean or replace screen located in dome Metal bowl Bowl assembly. sight glass Air leaks Check bowl, filler plug and sight Syphon dome seals. Tighten if neces- tube sary. Oil Foaming Over aeration Check bowl seals for slight Oil leaks. Oil Emulsified Water in lubricator Fit filter immediately upstream. Drip Rate changes after setting Fade Readjust drip rate. Drain (optional) Setting Lubricator Drip Rates What is the Correct Drip Rate Setting? The drip rate will depend on the application, the amount of lubrication required, the flow through the lubricator and the lubricator type. In Micro-Fog lubricators only 10% of the droplets in the sight dome are carried downstream. The drip rate in Micro-Fog lubricators therefore tends to be much higher. The following table can be used to estimate drip rate for required flow. This is very much a rule of thumb. In practice it is necessary to fine tune the oil drip rate in each application. Typical Drip Rate per Minute Typical Drip Rate per Approximate Flow Micro-Fog Oil-Fog SCFM (dm3/s) 20 2 10 (5) 40 4 20 (10) 60 6 30 (15) 80 8 40 (20) 100 10 50 (25) 120 12 60 (30) Can the Drip Rate be Shut Off? In lubricators with needle valve type sight dome, yes. Some Norgren sight domes use a felt pad which is soaked in oil at the point where the drops are formed. With this type of sight dome the oil droplets cease once the felt pad dries out. With the new style dome (L72/73/74 and L07) complete shut off is not possible. Minimum adjustment for the drip rate is around 1 drop per minute. 534 DPL108 pages518-554.pmd 534 10/5/2007, 10:29 AM
Goodyear Rubber Products
