Shaft Maintenance/Replacement; Bearing Frame Mount; Pump Disassembly - Pentair Berkeley Manual Del Usuario

Maintenance • Shaft Maintenance/Replacement
Outer Bearing Cap
with Grease Seal
Procedure and parts may vary slightly
Procedure and parts may vary
depending on pump model.
slightly depending on pump model.
• Remove volute to expose impeller.
• Peel off old volute gasket (or O-Ring) and discard.
NOTICE: Certain models such as the B4EY, are constructed
with a suction cover which is removed first to access impeller.
GENERAL
• Shaft assembly of bearing frame pumps should be
periodically (annually minimum) torn down for inspection
of worn parts, cleaning, and re-greasing. Most importantly,
to check shaft sleeve and bearings for pitting. Replace
worn components as necessary. Parts may be ordered
sepa rately as required, or for some models, shaft kits are
available that are completely assembled and ready for
installation.

PUMP DISASSEMBLY

• Remove packing gland and packing arrangement as
described on Page 20.
• Remove pump volute and impeller as described on page 19.
• Remove outer bearing cap and slide shaft assembly from
bearing bracket.
• Clean and inspect all components.
Make sure bearings are clean;
pack with grease as shown.
Water
Slinger
Oil Seal
SHAFT INSTALLATION
• Thoroughly steam clean or solvent wash the bearing cavity
of bracket to remove old grease and dirt. Check surface of
bracket for cracks, extreme corrosion, or other defects.
• Pack bearings with a lithium-based NLGI No. 2 extra
pressure ball bearing grease. Force enough grease into
each bearing to fill internal space between the races.
• Coat the bearing bores of bracket with oil. Orient shaft
assembly in the direction shown above. Slide shaft and
bearing assembly into bearing bracket. Do not force them!
When end of pump shaft comes through inside opening of
bearing cavity, place oil seal, water slinger, and lantern ring
over end of shaft. If packing gland or seal retainer is not of
the split variety, place it over the shaft at this time as well.
Slide shaft on through stuffing box until the first bearing
makes contact with the bracket. Carefully align bearing with
the bearing bore and press or tap bearing assembly into
place. Do not use excessive force.
NOTICE: Be sure bearing bores and bracket area are clean
and free of contamination or early bearing failure may occur.
• Reinstall outer bearing cap and oil seal.
• Rotate pump by hand, 10-12 rotations.
• Reassemble pump parts and reinstall unit to piping system.
Refer to Installation section in this manual for correct
procedure.
Outer
Bearing
Cap
Inner
Bearing
Cap
Slinger
21
Bearing Frame
(Bracket)
6041 0609