Bell & Gossett AC8584D Series HSCS Base Mounted Centrifugal Pumps - Manual (Page 29)

2
9
To install the oil ring, place the oil ring in the bearing housing
directly under the pipe plug hole. Run a wire through the pipe
plug hole, around the oil ring and back through the pipe plug
hole once again. Tie the wire to a metal washer (being a larger
diameter then the hole) causing the oil ring to become tight
against the inside top of the bearing housing. Then assemble
the bearing housing over the bearing. Untie the wire and the
oil ring will drop down onto the shaft. Check the position of
the oil ring through the pipe plug hole at the top of the bearing
housing. The oil ring must be resting on the shaft for correct
operation. A screwdriver can be used to correct the oil ring
position, if required.
The following steps describe how to change the oil for oil
lubricated bearings. Figure 27 shows a typical oiler assembly.
1. Remove the vent assembly from the top of the bearing
housing.
2. Remove the pipe plug from the bottom of the bearing
housing.
3. Unscrew the reservoir and remove.
4. Flush the oiler and bearing housing with a light grade of
oil. Flush until all foreign particles have been removed.
5. Screw the pipe plug and vent assembly back into place.
6. Fill the reservoir with a good grade of filtered mineral oil.
Refer to oil lubrication instructions given previously in this
manual for type of oil.
56;,! You must fill through Trico reservoir.
7. Place thumb over reservoir spout, invert and place reser-
voir on lower casting while removing thumb. Allow reser-
voir to empty, filling the bearing housing. Several fillings
of the reservoir may be required before the actual level is
reached, no more oil will run out of the reservoir.
8. When reservoir stays full, screw reservoir back into lower
casting.
Aperiodic filling of the reservoir is required. When the oil
becomes dirty, repeat steps 1 through 8.
3040;,+,5+-36(;*6<7305.
For units with drivers having sleeve bearings the coupling
halves are set to limited total shaft axial movement to less
than one-half of the motor rotor assembly end float. This is
accomplished by inserting a phenolic disc, or equivalent, of a
specified thickness between the motor and pump shaft (See
Figure 28).
Most HSCS pumps installations use the all metal, gear type
coupling. Where limited end float gear type couplings are
used, the coupling hubs are slip-fit onto the pump and motor
shafts. After installation of the coupling covers and hubs; with
the motor set on its Magnetic Center, butt the pump and
motor shafts with the phenolic disc inserted between them.
(The pump thrust bearing limits end float towards the motor.)
The thrust bearing of the pump is large enough to carry any
magnetic thrust developed by the motor when aligned prop
erly.
Once the above instructions have been followed out com-
pletely, the
(SPNUTLU[7YVJLK\YLZ starting on page 6 should
be followed.
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