Flowserve Tandem Seal - Manual (Page 2)

2
1. Equipment Check
1.1 Follow plant safety regulations:
• lock out motor and valves.
• wear designated personal safety equipment.
• relieve any pressure in system.
• consult plant MSDS files for hazardous material regulations.
1.2 Adjust the bearings, coupling, and impeller so that the shaft is in its
operating axial position. Disassemble equipment to allow access to
seal installation area.
1.3 Remove all burrs and sharp edges from the shaft and sleeve including
sharp edges of keyways and threads. Replace worn shaft or sleeve. Make
sure the seal housing bore, face, and sealing fluid flush taps are clean
and free of burrs and sharp edges that might damage O-rings, V-rings, or
Duraflex rings.
1.4 Check requirements for shaft, sleeve, and seal housing, see Figure 1.
1.5 Check assembly drawing included with the Tandem seal or specific seal
design, materials of construction, dimensions, and piping connections.
1.6 Check shaft or sleeve OD, box depth, box bore, and distance to the
first obstruction to ensure that they are dimensionally the same as shown
on the seal assembly drawing.
Seal Chamber Requirements Figure 1
To first obstruction
Face of seal housing to be square to the
axis of the shaft to within 0.0005 mm/mm
(0.0005 inch/inch) of seal chamber bore TIR
and have a 1.6
μ
m (63
μ
inch) R finish or better a
Gland pilot can be at either of these
register locations, concentric to within
0.125 mm (0.005 inch) of shaft or
sleeve OD TIR
Sleeve or shaft finish to be
0.8 μm (32 μinch) R or better a
Scribe
Mark A
Shaft or sleeve OD
+0.000 mm (+0.000 inch)
-0.050 mm (-0.002 inch)
+0.000 mm (+0.000 inch) API 610/682
-0.025 mm (-0.001 inch) DIN/ISO
• Bearings must be in good condition
• Maximum lateral or axial movement of shaft (end play) = 0.25 mm (0.010 inch) TIR
• Maximum shaft runout at face of seal housing = 0.05 mm (0.002 inch) TIR
• Maximum dynamic shaft deflection at seal housing = 0.05 mm (0.002 inch) TIR
Scribe
Mark B
Seal housing bore to have 3.2 μm
(125 μinch) R finish or better a
ANSI
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.