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Flowserve RIS Seal User Manual

Page 10

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6.3.3 Tighten jam nut 9-1 on the impeller side of the clamp.

6.4

Fill the pump with process fluid or water ensuring air is purged

from pump to check for static leaks. Repair any leaks before

start-up.

6.5

Start the pump and closely monitor seal leakage for approxi-

mately two hours. Seal leakage can be initiated by dimensional

changes in the pump after start-up that may reduce seal com-

pression. Example:

Axial shaft movement due to bearing clearances and thermal

growth. If visible leakage is observed shortly after start-up,

adjust the seal one flat and wait 10 to 15 minutes for the full

effect of the change. If necessary, repeat the procedure no more

than 3 times (6 flat total or 1 complete turn of the nut). If the leak

has not been reduced, it is a static leak or the seal faces have

been damaged. Further adjustment may damage the seal.

For technical assistance or information pertaining to your particular

application, contact your nearest authorized Flowserve distributor.

10

6.3.2 Tighten 9 adjusting nut the number of flats in the table

below. (1 flat = 1/6 turn of the nut)

Stud Size

Compression (inches)

Compression

(inches)

0.040 / 0.050

Per Flat inches (mm)

3/8 - 16 UNC

4 Flats

0.010 (0.254)

1/2 - 13 UNC

4 Flats

0.013 (0.330)

5/8 - 11 UNC

3 Flats

0.015 (0.381)

3/4 - 10 UNC

3 Flats

0.017 (0.432)

1 - 8 UNC

2 Flats

0.021 (0.533)

Stud Size

Compression (Inches)

Compression

(metric)

0.040 / 0.050

Per Flat mm (inches)

M10 x 1.5

4 Flats

0.254 (0.010)

M12 x 1.75

4 Flats

0.279 (0.011)

M16 x 2.0

3 Flats

0.330 (0.013)

M20 x 2.5

3 Flats

0.406 (0.016)

M24 x 3.0

2 Flats

0.508 (0.020)