BLACKMER SYSTEM ONE, Инструкции по установке, эксплуатации и обслуживанию

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1301-C00 page 15/56
Wear insulated gloves when using a
bearing heater. Hot bearings can cause
physical injury.
Extreme heat can
cause injury or
property damage.
Maximum Allowable Tightening Torque
For Bearing Locknuts
Bearing
Designation Locknut
Designation Maximum Allowable
Tightening Torque
5308 & 7306 N-08 35 ft-lbf (47 N-m)
7310 BEA N-10 70 ft-lbf (95 N-m)
7314 BEA N-14 170 ft-lbf (230 N-m)
7. Install the lockwasher (69) on the shaft with the tab in the
keyway. Fasten securely with the lock nut (22) and tighten
with a spanner wrench per the corresponding torque
shown in the chart above. When cooled, tighten again to
make certain the thrust bearing inner race is against the
shaft shoulder and the outer races do not turn against
each other. If the bearing has to be reset, remove the
locknut and use an arbor press with a sleeve to seat the
inner race of the bearing eliminating any clearance.
Finally, turn down the appropriate tab on the lock washer
into the matching slot on the lock nut.
8. Heat the radial bearing (16) in hot oil, or with an induction
heater, to a temperature of approximately 240°F (116°C).
Using clean insulated gloves, mount the hot radial bearing
on the impeller end of the shaft (6) and bottom against
shaft shoulder. Allow the bearing to cool on the shaft in
the vertical position so that the bearing will stay seated
against the shaft shoulder while it shrinks to the shaft.
9. Press in the new labyrinth seal stator (89) if replacement
is necessary. Press in until the face of the stator is flush
with the machined tooth in the housing. Make certain that
the oil return groove aligns itself with the oil return slot in
the I.D. of the cartridge. The side with the smallest I.D.
should face inside the cartridge.
10. Mount the new O-ring (405) in the groove on the O.D. of
the cartridge (33).
11. Mount the cartridge (33) over the thrust bearings (18) until
the outer race is seated against the shoulder inside the
cartridge. Slight heating of the cartridge and lightly oiling
the OD of the bearing will ease this assembly.
12. Fasten the bearing retainer cover (35) to the cartridge (33)
and evenly torque in an alternating pattern the quantity 8
socket head cap screws to the value shown in the bolt
torque chart. See section 11.0.
13. Mount the micrometer nuts (66) on the cartridge studs
(403) at the coupling end of the bearing frame (19). Make
certain that the hex nut portion is pointing toward the
bearing frame (19).
14. Locate the flinger (62).
Frame SD and S do not require a flinger.
Frame A/LD17 is 0.86 in (22 mm) from the radial bearing
shoulder with the hub facing the radial bearing.
Frame M is 2.0 in (51 mm) from the retainer cover (35).
Tighten the set screws.
Install Rotating Element in the Bearing Frame
See Pump Assembly Drawings section 8.0.
1.
The rotating element is now ready to install in the bearing
frame (19). Lubricate the machined bores inside the
bearing frame and the O.D. of the cartridge (33), including
the O-ring (405), with oil. Slide the rotating element into
the bearing frame.
IMPORTANT:
Make certain that the oil return groove inside the cartridge (33)
is located at the 6 o’clock position in the bearing frame (19).
The “blackmer” logo, which is cast into the outer face of the
cartridge, must be at the top. This is important, as it allows the
oil to return to the bearing frame through the groove at the
bottom of the cartridge, once it has passed through the thrust
bearings (18).
2.
Mount the cartridge lock nuts (404) onto the cartridge
studs (403). Maintain the lock nuts and micrometer nuts
(66) in a loose condition to allow a free floating rotating
element while the remainder of the pump is being
assembled.
3. Press the radial labyrinth seal stator (89D) into the frame
adapter (71) if replacement was necessary on the Frame
A/LD17 pump. Press in until the face of the stator is flush
with the machined tooth in the housing. Make certain that
the oil drain slot in the stator is in the 6 o’clock position
after the frame adapter is fastened to the bearing frame
(19).
4. For the Frame M, fit the labyrinth stator O-ring (89G) onto
the radial labyrinth seal stator (89D) and press into the
bearing frame (19).
5. Frame SD and S have an integral stator in the bearing
housing.
6. Mounting frame adapter
a.
Frame SD and S have no separate frame adapter.
b. Frame A/LD17 Mount the frame adapter (71) onto the
bearing frame (19) with O-ring (72) in place and
fasten securely.
c. Frame M Has a radial labyrinth seal stator which acts
as a radial bearing cover and contains an O-ring
(89G) to seal the bearing frame.
7. Lubricate the shaft surface with grease or oil to facilitate
mounting the thrust labyrinth seal rotor (89B). Mount with
two O-rings (89C) on the shaft (6) at the coupling end.
Push it all the way into the stator so that the grooves
mesh into one another.
8. Lubricate the shaft surface with grease or oil to facilitate
mounting the radial labyrinth seal rotor (89E). Mount with
two O-rings (89F) on the shaft (6) from the impeller end.
Push all the way into the stator so that the grooves mesh
into one another.