Algas SDI Direct Fired F6-ASME, Руководство по эксплуатации и техническому обслуживанию

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Maintenance
Algas-SDI Operation and Maintenance Manual – P/N – 54000 22
14. Install inlet valve cap (large flange nut) and tighten into valve body. You may
apply NEVER-SEEZ compound to the flange nut to allow for easy removal of
the flange nut in the future.
15. Once the internal components of the valve are replaced perform a “water
test” to ensure your inlet valve is sealing properly. To perform this test:
apply a 1/8” plug in the top of the inlet valve cap using Teflon tape to ensure
it is leak-proof. Using an air hose, apply 80-100 psi of air pressure at the
inlet of the valve and completely submerge the valve in a bucket or sink full
of water. Wait approximately 5-10 seconds and observe for air bubbles
exiting the valve around valve stem that protrudes from the middle of the inlet
valve. If not bubbles are present, the valve is sealing properly.
16. Remove any remnants of the old inlet valve flange gasket from the surface of
the flange on the inlet valve itself and on the flange at the heat exchanger.
17. Lightly spray new inlet valve flange gasket with a dry lubricant (graphite)
before installing it on the unit.
18. When re-installing the inlet valve on the vaporizer, place flange gasket on the
gasket surface and slide the stem under the float ball inside the heat
exchanger. Slightly tighten the bottom two flange bolts allowing the flange
gasket to be supported by the two bottom bolts. Working your way around
the valve, hand tighten the remainder of the bolts inspecting as you tighten
them to ensure the position of the inlet valve flange gasket is correct.
19. To tighten the inlet valve bolts, torque the 6 bolts to 30-35 ft.-lbs. in a
cross/star pattern.
20. Leak test inlet valve flange bolts prior to re-starting the vaporizer.