PUMP
19
Instruction & Operation Manual
800.789.1718
Motor Maintenance
Proper motor maintenance is a critical part of maintaining the entire motor/pump assembly. If the motor is not properly maintained,
the potential failure of the motor’s mechanical components can transmit to the pump and possibly cause issues with sealing and
general pump operation.
Recommended Maintenance
NEMA Frame Size
Rated Speed (RPM)
3600
1800
1200
900
Up to 210
5500 hrs.
12000 hrs.
18000 hrs.
22000 hrs.
Over 210 to 280
3600 hrs.
9500 hrs.
15000 hrs.
18000 hrs.
Over 280 to 360
2200 hrs.
7400 hrs.
12000 hrs.
15000 hrs.
* Relubrication intervals are for ball bearings.
** For motors operating at speeds greater than 3600 RPM, contact motor manufacturer for relubrication recommendations.
Severity of Service
Hours per day
of Operation
Ambient Temperature
maximim
Atmospheric
Contamination
Standard
8
104°F (40°C)
clean, little corrosion
Severe
16 Plus
122°F (50°C)
moderate dirt, corrosion
Extreme
16 Plus
> 122°F (50°C)*
or Class H Insulation
severe dirt, abrasive dust,
corrosion, heavy shock or
vibration
Low Temperature
<-21°F (-29°C)**
* Special high temperature grease is recommended (Dow Corning DC44).
** Special low temperature grease is recommended (Aeroshell 7).
Note: Different grease types are generally incompatible and should not be mixed. Mixing different types can cause lubricant
and bearing failure. Thoroughly clean bearing and cavity before changing grease type.
NEMA Frame Size
Volume of Grease per Bearing
Inches
3
Teaspoon
56C to 143/145TC
0.15
0.5
143/145TC
0.20
0.8
182/184TC
0.30
1.0
213/215TC
0.60
2.0
254/256TC
0.70
2.5
284/286TSC
1.20
3.9
