BLACKMER SYSTEM ONE, Инструкции по установке, эксплуатации и обслуживанию

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1301-C00 page 49/56
12.3 Double Row Bearing Assembly Procedure
The Frame S pump uses a double row, 5308 thrust bearing,
otherwise the procedure is the same as in steps 1 through 12
above. Locknut tightening torques are listed in the table
below.
Maximum Allowable Tightening Torque For Bearing Locknuts
Bearing Designation
Maximum Allowable
Locknut Designation
Maximum Allowable
Clamping Force (lbf)
Tightening Torque
(ft-lbf)
5308
7310 BEA
7314 BEA
N-08
N-10
N-14 1602.5 (7.1 kN)
2475.0 (11.0 kN)
4400.0 (19.6 kN)
35 (47 N-m)
70 (95 N-m)
170 (231 N-m)
Retainer Cover Screws Tightening Torque
Frame SD
Frame S
Frame A
Frame M
M4 x 0.7
8-32
10-32
0.31 -24
30 in-lbs (3.4 N-m)
13 in-lbs (1.5 N-m)
49 in-lbs (5.5 N-m)
18 ft-lbs (24.4 N-m)
13.0 PUMP COMPONENT INSPECTION
Casing
Pump and components are heavy.
Failure to properly lift and support
equipment could result in physical
injury or damage to pump. Steel toed
shoes should be worn at all times.
Heavy assemblies
can cause personal
injury or porperty
damage.
1. Inspect inner face where impeller runs for any deep
gouges made from impeller rubbing or material caught in
the impeller. Gouges up to .125 in. (3 mm) deep are
acceptable for pump operation as long as pump system
pressure is below 150 psig (10 bar).
2. If there are numerous gouges and scratches, original
performance characteristics may be affected. If damage
is severe the casing may not be able to handle the
system pressure and should be replaced.
3. The vortex pump has a separate suction cover that can
be replaced if necessary.
Impeller
Wear heavy gloves when handling
impeller as sharp edges may cause
physical injury.
Hazardous
machinery can
cause serious
personal injury.
1. Inspect face of impeller for gouges on blades. Clean up
any burrs with a file or grinding wheel. If the impeller has
severely rubbed against the casing face, it should be
replaced as the efficiency and flow will not be maintained
to original specifications.
2. If impeller is cut to a new diameter, it should be
rebalanced to ISO G6.3 balance specification.
3. If impeller was difficult to remove, impeller thread should
be re-chased with a tap. See section 11.0 for thread
sizes.
4. If the impeller shows excessive erosion, corrosion,
extreme wear or vane breakage, it should be replaced.
Back Cover
1. Inspect gasket face of stuffing box where mechanical
seal gasket seats. If the face is gouged or nicked, a cut
can be taken on a lathe duplicating the existing gasket
surface finish. Maximum stock removal .040 in.(1.0 mm).
2. Inspect back face for gouges or nicks and inner surface
of seal chamber for serious erosion, i.e. wall thickness
worn to less than .350 in. (9 mm) for Frame SD or S or
.420 in. (11 mm) for Frames A, LD17 and M. Unless
seriously damaged, remove any burrs and reuse cover.
Frame Adapter

Inspect faces to insure there are no cracks in flange rings
or extending from bolt holes. Inspect labyrinth seal stator
for signs of rubbing. If damaged seriously, i.e. rub more
than 1/3 of circumference, replace.
Bearing Frame

Inspect bearing bore dimensions per pump tolerance
chart, section 10.0.

Check sump for dirt or contaminants and clean as
necessary.
Cartridge

Inspect bore and O.D. of cartridge dimensions per pump
tolerance chart, section 10.0.

Inspect labyrinth seal stator for signs of rubbing. If
damaged seriously, i.e. rub more than 1/3 of
circumference, then replace cartridge.