Driver
Slide to fit
Figure 25: Slide driver-half of coupling guard towards motor
10. Use a nut, a bolt, and two washers to secure the coupling guard halves together.
11. Tighten all nuts on the guard assembly.
5.6 Bearing lubrication
WARNING:
Pumps are shipped without oil. Oil-lubricated anti-friction bearings must be lubricated at the job
site.
Risk of explosive hazard and premature failure from sparks and heat generation.
Ensure bearings are properly lubricated prior to startup.
Lubrication requirements
Pump type
Requirements
Close coupled Close-coupled pumps do not have bearings that require lubrication.
Frame mounted
•
The oil level is measured through the sight glass.
•
The oil level must not fall below the center of the sight glass.
•
An increase in oil level may be noted after startup due to oil circulation within the bearing
frame.
5.6.1 Lubricating-oil requirements
Oil quality requirements
Use a high-quality turbine oil with rust and oxidation inhibitors with rated viscosity shown below at 38°C |
100°F.
Oil requirements based on temperature
For the majority of operating conditions, bearing temperatures run between 49°C | 120°F and 82°C | 180°F,
and you can use an oil of ISO viscosity grade 68 at 38°C | 100°F. If temperatures exceed 82°C | 180°F, refer to
the table for temperature requirements.
Temperature
Oil requirement
Bearing temperatures exceed 82°C | 180°F Use ISO viscosity grade 100. Bearing temperatures are generally
about 11°C | 20°F higher than bearing-housing outer surface tempera-
tures.
5.6 Bearing lubrication
46
Model 3296 EZMAG Installation, Operation, and Maintenance Manual
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