Flowserve High Temperature Metal Bellows Seals - Manual (Page 2)

2
1 Equipment Check
1.1 Follow plant safety regulations prior to equipment disassembly
including but not limited to the following:
• Lock out motor and valves.
• Wear designated personal safety equipment.
• Relieve any pressure in the system.
• Consult plant MSDS files for hazardous material regulations.
1.2 Disassemble equipment and remove existing sealing arrangement.
1.3 Check seal assembly drawing for seal design, materials of construction
and piping connections. Verify that the mechanical seal is designed for the
equipment currently being repaired.
1.4 Check seal assembly drawing for any modifications required to the
equipment before installation and act accordingly.
1.5 Check shaft or sleeve OD, seal chamber depth, seal chamber bore,
distance to the first obstruction, gland pilot and bolt holes to ensure
that they are dimensionally the same as shown on the seal assembly
drawing.
1.6 Thoroughly inspect and clean all mating surfaces, seal chamber and
shaft. Remove all burrs, nicks, scratches and sharp edges from the shaft
and sleeve including sharp edges of keyways and threads. Inspect for
corrosion or any defects. Replace worn shaft or sleeve. Make sure the
seal housing bore, face, and sealing fluid flush taps are free of burrs and
sharp edges that might damage gaskets.
1.7 Check requirements for shaft, sleeve and seal housing as described
in Figure 1. Any readings greater than what is allowed must be brought
within specifications.
1.8 Reassemble the equipment enough to allow access to the seal
installation area. Adjust the bearings and impeller so that the shaft
is in its axial and radial operating position.
1.9 Handle all seal parts with care; they are manufactured to precise
tolerances. The seal faces are of special importance. Sealing faces are
lapped flat to within two light bands (23.2 millionths of an inch, 0.59 mm).
Keep the seal faces perfectly clean at all times.
The images of parts shown in these instructions may differ visually from the actual
parts due to manufacturing processes that do not affect the part function or quality.