Milnor MWT12E5, Installation And Service

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Motor Maintenance
PELLERIN MILNOR CORPORATION
Figure 1: Typical Data Plate on a Motor
1. Find the frame code and RPM on the motor data plate. Example:
Frame code = 215T, RPM = 1725
2. Find the standard interval in Table 1 . Example:
Standard interval = 12,000 hours
3. Find the rating and multiplication number in Table 2 for your worst operation condition.
Example: ambient temperature = 102°F (39°C). Moderate contamination.
Rating = bad, Multiplication number = 0.5
4. Calculate the correct interval (the number of hours of operation before it is necessary to add
grease). Example:
12,000 x 0.5 = 6,000 hours
Where:
12,000 is the standard interval
0.5 is the multiplication number for a rating = bad.
5. Find the quantity of grease for the frame code for your motor in Table 3. You can use the
bearing data in the table to do maintenance. Do not use this data to adjust the quantity of
grease. Example:
grease volume = 0.16 ounces (4.7 grams)
grease gun cycles = 2.5
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