Flowserve ISC2 Series Manual de usuario descargar pdf (Pagina 5)

Figure 4

2.8 Assemble the equipment per manufacturer specications. Avoid pipe

strain. Align the coupling per manufacturer specications.

2.9 With the impeller, shaft, coupling and bearings in their nal operating

position, tighten the drive collar set screws. See Figure 4. Note: in designs

that have two smaller screws, these are quarter dog screws that hold the

collar to the sleeve and should not be tightened. A hex key was provided

for the set screws, not for the quarter dog screws.

Recommended ISC2 seal minimum set screw torque by size range:

Seal mm 25 - 60 67 - 70 75 - 203 75 - 203

Size (inch) (1.000 - 2.500) (2.625 - 2.750) (2.875 - 8.000) (2.875 - 8.000)

Gland Size All All Standard Bore Enlarged Bore

Torque 4.5 N-m 13.5 N-m 16.9 N-m 27.1 N-m

(40 in-lbs) (120 in-lbs) (150 in-lbs) (240 in-lbs)

2.10 Remove the setting devices from the drive collar by loosening the cap

screws. See Figure 5. Save the setting devices and fasteners for future use

when the pump impeller is reset or when the seal is removed for repairs.

2.11 Turn the shaft by hand to ensure unobstructed rotation.

2.12 See Operational Recommendations before start-up.

3 Piping Recommendations

3.1 Install and maintain an adequate piping plan. The ISC2 seal requires a

clean, cool environment for maximum seal life. Typical piping plans are

listed below. Contact Flowserve for additional piping plan information

or technical support. Important: All red plastic caps/thread guards are

for shipping protection only and should be replaced with either a piping

connection or a metal plug in the same metallurgy as the gland.

Figure 5

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Flowserve ISC2 Series Manual de usuario Pagina 5