Velocity Edge GX325 Bedienungsanleitung PDF herunterladen (Seite 41)

Leakage Between the Plate Pack and the Frame

(See Figure 49, Item 1)

Leakage Between the Nozzle and the End Frame

(See Figure 49, Item 2)

Figure 50

Troubleshooting nozzle/end frame leaks.

PROCEDURES AND OBSERVATIONS SOLUTIONS

1. Use a felt tip marker to identify the area where the leakage

seems to be occurring and then open the plate pack.

2. If the leakage occurs in the area of a nozzle, then observe the

gasket condition of the “D” plate or “E” nozzle “O” ring.

Foreign matter, scars, other damage to the gasket surfaces

and any gasket dislocation may be the problem.

Remove all foreign matter, relocate the gasket, or replace the

damaged gasket.

3. Check the end frame for foreign objects, surface unevenness,

or any other condition which might interfere with the seal

between the gasket and the adjacent surface.

Remove any interference between the gasket and the surface

of the end frame.

4. Check the plate for cracks or holes. If a plate has perforation, it must be replaced.

PROCEDURES AND OBSERVATIONS SOLUTIONS

1. Fluid is ﬂ owing from the area between the nozzle and the

end frame (point A on Figure 50) and/or the interior of the

end frame and the seal plate (point B on Figure 50).

Check the integrity of the continuous pressure weld between

the stub end and the seal point (point C on Figure 50). Dye-

check for small cracks. If the dye-check reveals any linear

indication, the area needs to be ground down and re-welded

using TIG welding, and the appropriate welding wire. If the

weld damage occurred due to a blow to the nozzle, some of

the plate assemblies may be damaged. Damaged plates should

be replaced.

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Velocity Edge GX325 Bedienungsanleitung Seite 41