Clarke FG2000 Especificações descarregar pdf (Página 7)

Disassembly:

-After pressure is relieved from the gage glass, remove from the boiler drum and lay

flat on a workbench

-Loosen end bolting first, working from the opposite ends toward the center of the

gage.

-Remove all components including washers, finger clamps, cover plates, gaskets,

glass, and Mica shields. Retain the bolting and cover plates. Discard all gaskets,

glass, and Mica. Note: Never re-use these components, even when they appear to

be in perfect condition!

Reassembly:

-Inspect all glass kit components. Verify that the repair kit is the correct one for the

model gage that is being repaired. Carefully inspect the glass for any chips, cracks or

scratches. Do not use the glass if it is damaged! Inspect the Mica shields and gaskets

for any visible signs of damage, Do not use these components if damaged!

-Use a bronze or brass scraper to remove any bits of gasket material that may

remain, without causing damage to the gage body or cover plate(s).

-Examine body gasket surfaces for steam cuts or scratches. Gougedor scratched

gasket surfaces may be re-machined if necessary. See Clark-Reliance Form E190-A

for machining details and tolerances.

-Locate the gaskets, Mica (if on Flat Glass Gages), and glass centrally in the seat and

cover to avoid any glass-metal contact at the ends or sides.

-Clean and lubricate all fasteners with Molycote or similar high temperature anti-seize

lubricant.

-Tighten nuts ‘finger tight’ in the sequence shown in the sketch. Using a calibrated

torque wrench, tighten all nuts in the proper sequence in 1/3

increments.

-Torque values

70 Ft. Lbs. (95 Newton Meters)FG1500 or FG2000 Series

45 Ft. Lbs. (61 Newton Meters)FG400 or FG900 Series

40 Ft. Lbs. (54 Newton Meters)‘C’ and ‘S’ Prismatic

-Hot torque gage per instructions found on page 8 of this manual.

-Return gage to service

-Note: Conduct regular inspection of the gage glass. The gage must be repaired if

there are any signs of scratches, etching, erosion of the glass, clouding,or

deterioration of the glass or Mica shields.

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Clarke FG2000 Especificações Página 7