Flowserve MD-200 Series Durametallic - Manual (Page 2)

2
1 Equipment Check
1.1 Follow plant safety regulations prior to equipment disassembly:
• Consult the plant Material Safety Data Sheet (MSDS) files for
hazardous material regulation.
• Wear designated personal safety equipment.
• Lock out the mixer or agitator motor and valves to and from
the vessel.
• Relieve any pressure in the vessel.
• Use plant vessel entry procedures if it is necessary to enter
the vessel.
1.2 Secure the mixer or agitator shaft in accordance with the mixer
or agitator manufacturer’s instructions.
1.3 Remove the coupling and/or drive to access the seal area.
Follow the manufacturer’s instructions.
1.4 Remove the existing seal assembly.
1.5 Remove all burrs and sharp edges from the shaft and vessel
flange area. The shaft and vessel flange must be free of burrs,
sharp edges, cuts, dents, or corrosion that might cause leakage
past the sleeve packing O-rings and the vessel flange O-ring
gasket.
1.6 Check requirements for the shaft and the vessel flange.
They must agree with the dimensions shown in Figure 1.
1.7 Check the assembly drawing accompanying the seal assembly
for specific seal design data, materials of construction, dimensions,
and recommended piping connections.
1.8 Check the shaft OD, vessel flange bolt size, bolt circle, and
distance to the coupling or drive to ensure that these dimensions
agree with the seal assembly drawing provided.
1.9 Handle the seal assembly with care, it is manufactured to
precise tolerances. The sealing faces of the rotors and the stators
are of special importance. These sealing faces are lapped to rigid
specifications required for contacting face gas seals. If it becomes
necessary to disassemble the seal, keep these sealing faces
clean and dry at all times and protect them from damage
since they are subject to impact fracture.
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.