FULTON FT-0080C, Инструкция по установке, эксплуатации, обслуживанию и каталог запасных частей

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FT-C Vertical Electric Thermal Fluid Heater Manual 12 2013 ISSUE 1
Page 22
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FIG. 15 BOLTING SEQUENCE FOR 4 AND 8 BOLT FLANGES
2.15
GASKET INSTALLATION INSTRUCTIONS
1. Lubricate nuts, bolts and washers with a graphite/oil mixture.
2. Assure that the flange surfaces are clean and free from damage.
3. Centre the gasket properly over the flange. In retrofit, use a pry bar to spread the flange apart
enough that the gasket will not be damaged when sliding in place.
4. Install all flange nuts and bolts.
5. Hand tighten.
6. Utilising a torque wrench, tighten all bolts to 20% final torque specification following a “star”
pattern. (This means do not tighten bolts in order as a clock. This will result in a poor seat
between 12 o’clock and 1 o’clock.)
7. Tighten all bolts to 40% final torque specification following a “star” pattern.
8. Tighten all bolts to 60% final torque specification following a “star” pattern.
10. Tighten all bolts to 80% final torque specification following a “star” pattern.
11. Tighten all bolts to 100% final torque specification following a “star” pattern.
12. Following a sequential pattern, ensure that all bolts are tightened to 100% final torque
specification.
13. It is important that all of the bolts are checked and re-torqued after the flanges have been
heated and cooled down for the first time.