Installation instructions

GEI-M1011A
Angular-contact bearings which are to be stacked together
should have their high points of eccentricity (indicated by a
burnished spot on the inner race) lined up. All bearings
should be of the same manufacturer and of the type that
permits stacking.
Some motors with angular-contact ball bearings are supplied
with removable spacer rings under the outer race of the
thrust bearing so that the thrust capacity can be increased by
adding an extra bearing or bearings. When these bearings are
installed, the high points of eccentricity should be lined up
with the keyway in the lower half-coupling. If the original
bearings have been in service, they should be replaced at the
time this conversion is made.
G. Oil Cooling Coil Maintenance
See general description of cooling coil connection fittings
and Figure 3.
As part of ongoing preventative maintenance check for oil
leaks around the cooling coil fittings, and check for possible
internal water leakage as indicated by an unexplained rise in
oil level or a change in oil color. Parts A, B, E and F should
always be tight and part B should always be seated against
part A to ensure the sealing O-Ring is properly compressed.
If cooling coil is to be removed, first remove supply pipes
and drain water out of coil. Next remove parts F, B, E and A
in that order. Then remove the end shield cover and
unscrew the inlet and outlet pipes (part C) from the cooling
coil, being careful to hold the elbows on the ends of the
cooling coil to prevent damage. Finally, remove the oil-
baffle and the cooling coil.
To reinstall the cooling coil proceed as follows:
1. Obtain a new o-ring unless you are certain the old
o-ring is undamaged and has not aged or taken a
compression set.
2. Place coil (without inlet/outlet pipes C) in end
shield and secure loosely.
3. Stick inlet/outlet pipes C through holes in end
shield wall and check line up of pipes and end shield holes
by screwing pipes loosely into cooling coil elbow . . . pipes
should be centered in holes in end shield wall. Adjust
cooling coil as needed but Do Not Tighten Parts Yet.
4. Thread Part A over pipes and screw A into end
shield loosely. Adjust position of cooling coil as necessary
to let pipes exit without strain and then secure cooling coil
into end shield.
5. Remove parts A and C and put pipe joint
compound on threads. Inspect outer end and slots in C pipes
and remove any burrs or sharp edges to prevent damage to
O-Ring during assembly. Then screw pipes C hand-tight
into cooling coil elbows, being careful not to bend or
damage the cooling coil when tightening C. Next, tighten C
by using wrench on hex fitting at inner end of C.
6. Next, slide part A into place and screw tightly
into end shield, being careful not to damage outer surface of
C where O-Ring will seat.
7. Check gap between end shield wall and inner
surface of A, if this exceeds 6.35 mm (1/4 in.), the end
shield hole should be tapped deeper.
8. Check position of end of C with respect to outer
face of A. See Figure 3 for limiting dimensions.
9. Install three (3) setscrews E in A 120° apart and
tighten securely to lock A into position and keep it from
unscrewing. Setscrews should bite into surface of end
shield.
10. Be very careful not to damage or mar outer
surface of C where O-Rings seats.
11. Recheck outer end and slot of C and remove any
burrs or sharp edges to prevent damage to O-Ring during
assembly. Then lubricate O-Ring and slide it into position
shown in Figure 3. Be sure to push it in until it seats against
A.
12. Slide Part B into place and secure with three (3)
socket-head screws. Tighten F screws until flange of B seats
solidly against A. There should never be a gap between A
and B. Use “Loc-Tite” on threads of F screws to prevent
their unscrewing.
Parts A and B compress the O-Ring against C and seal oil
into the motor and water into the coil.
13. Pressure check the entire system.
H. Insulation and Winding Maintenance
1. General
For long life and satisfactory operation, insulated windings
should be kept clean and free of dirt, oil, metal particles, and
other contaminants. A variety of satisfactory and acceptable
methods are available for keeping equipment clean. The
choice of method will depend greatly on time, availability of
equipment, and on the insulation system. However, vacuum
and/or compressed air cleaning with nonmetallic hose tips
should precede cleaning with water and detergent or with
solvents. Tightly adhering dirt may require gently brushing
or wiping to get it loose.
WARNING: To prevent injury to eyes
and respiratory organs, safety glasses
and suitable ventilation or other
protective equipment should be used.
2. Vacuum and Compressed Air Cleaning
Compressed air may be used to remove loose dirt and dust
from air passages such as air ducts.
17