V-Belt
1.
Lock out power to the driver.
2.
Remove the V-belt guard.
3.
Make sure the sheaves are securely fastened to shafts.
4.
Unlock driver power.
5.
Make sure everyone is clear. Jog the driver just long enough to determine direction of rotation.
Rotation must correspond to an arrow on bearing housing.
6.
Lock out power to driver.
7.
Replace the V-belt guard.
Check Impeller Clearance
Check impeller clearance before installing the pump. The impeller must not rub when the shaft is turned
by hand, therefore it is recommended that the
4.6 Impeller alignment worksheet on page 34
is filled out
and filed with the pump maintenance records for future reference.
Check for free turning
Before the pump is started, rotate the pump by hand to be sure it turns freely, and does not rub or bind.
Bearings
The bearing assembly uses spherical roller or ball bearings to carry the radial load, and angular contact
ball or tapered roller thrust bearing to carry the axial thrust load from the impeller. The bearing housing
has a horizontal split along the centerline for ease of assembly and inspection.
Lubrication
The bearing uses oil bath lubrication. Oil lubricated bearing assemblies are shipped without oil. Oil must
be added to the bearing housing before starting.
Table 6: Axial Flow Pump Approx Oil Volume
Pump Size
Quarts
Liters
42" / 1200mm / 54"
74
70.5
60" / 66"
62
59
Approximate values only. Always fill using sight glass to verify level. Oil level should be at the center of
the sight glass. See comments in this section.
Remove the bearing housing breather (113A) and add oil until oil level is at the center of the sight glass.
If the unit has an external oil lube system, fill the bearing housing and the reservoir to satisfy the system
requirements. Replace the breather. Table:
Axial Flow Pump Approx Oil Volume
, shows the oil volume
required.
Bearings must be lubricated properly in order to prevent excess heat generation, sparks and prema-
ture failure. Run the pump for 1 minute to fill the oil galleys and in and around each bearing. Check the
sight glass and add oil accordingly. Monitor the oil level indicator for the first 24 hours of operation and
maintain fill level.
Oil Type
Use an industrial quality lubrication oil such as Mobil DTE series, Exxon Teresstic, or similar of ISO
VG68. ISO VG46 may be used in ambient temperatures below 4°C | 40°F .
In any case the operating temperature viscosity must be a minimum of 150SSU.
5.1 Preparation for start-up
Model AF (42"/1200mm/54"/60"/66") LM/LMR Bearings Installation, Operation, and Maintenance Manual
37
