Sierra Series 830/840/860 Side-Trak™ and ... - Sierra Instruments

Chapter 4 MaintenanceSeries 830/840/860 Instruction ManualFigure 4-3. High Flow Transducer LFE CleaningHigh Flow Transducers:The high flow LFE is similar to the honeycomb element used in themedium flow body but larger in diameter. The high flow body consistsof four parts: inlet tube, inlet cap, main flow body and end cap.The inlet tube is only removed to inspect and replace the sealing O-ring between the inlet tube and inlet cap. To access the components:1. Remove the unit from the system.2. To remove the inlet screen, remove the four 1/4-28 socket head capscrews on the inlet side of the flow body and separate the inlet capfrom the main flow body.3. Inspect the inlet screen for damage and corrosion and replace if necessary.Light to medium particulate contamination can be cleaned by backwashing with a suitable solvent. Air dry thoroughly.4. Inspect the sealing O-ring for damage and replace if necessary.The inlet screen is mounted with the fine mesh side facing the inlet.5. To remove the LFE loosen and remove the four threaded rods holdingthe end cap to the main flow body. Separate the end cap from themain flow body and remove the LFE assembly. The LFE assemblyconsists of: 6-32 x 31/8 inch long screw, a #6 washer, two rangingwashers, honeycomb LFE, spacer, inlet filter and 6-32 nut.6. Inspect the honeycomb element for damage and replace if necessary.Replacement of the LFE or inlet screen requires transducer recalibration.`7. Re-assemble components. When the transducer is re-installed in the system,leak test the connection.8. Check transducer calibration.4-4 IM-83/84/86-H