Carver RS A, Installation, Operation And Maintenance Manual

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RS Series – Multi-Stage, Ring Section Pumps January 2001
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Table 10. Recommended Torque Values
Fastener Size Torque (foot pounds)
1/4-20 UNC 5
5/16-18 UNC 10
3/8-16 UNC 15
1/2-13 UNC 30
7/8-14 UNF 315
1-12 UNF 446
D. Disassembly and Assembly
Preparations
NOTE
Refer to Section V, paragraph H for oil
lubrication and water cooling
disassembly and assembly procedures.
During disassembly, match mark parts so they
can be replaced in their original position. All
parts should be thoroughly cleaned or replaced
with new, if necessary. Sealing faces should be
perfectly clean. Carver Pump Company
recommends that all o-rings and shims are only
used once.
NOTE
To avoid damage to o-rings, check to
make sure all parts are free of sharp
edges or burrs.
Close suction and/or discharge valves. The
pump cases should be cooled down to ambient
temperature. Cases must be empty and not
under pressure.
After prolonged operation, components may not
be easily removed from shaft. In such instances,
rust solvent may be used and suitable extracting
tools applied wherever possible. Do NOT use
force under any circumstances. Refer to Table
11, Recommended Tools, for proper tooling
during disassembly and assembly.
Refer to appropriate sectional drawing, for
location of parts followed by an item number.
Assemble the pump in accordance with
accepted rules of engineering practice. Coat
individual components with a suitable lubricant
before assembling. Assembly of unit should be
performed on a flat surface.
While assembling the pumping unit, Carver
Pump Company recommends that the following
parts be replaced with new:
•
O-rings
•
Shims
•
Bearings
•
Grease seals
•
Mechanical seals
If new impellers or new shaft protecting sleeves
are fitted, impellers must be axially aligned with
respect to diffusers. Refer to paragraph F of this
section for procedures regarding axial impeller
alignment.
Table 11. Recommended Tools
Tools Materials Testing Equipment
Spanner wrench Grease (Rykon) or oil Coupling alignment gauges
Rawhide or wood mallet
Wooden wedge
Allen wrench set
Socket, open, & box wrench set
Vice grips
“C” clamp