G2030-II-S
Apr ‘19
- 5 -
AC Motor Maintenance Instructions
Cleaning.
To ensure that the Motor operates at optimum temperatures and provides years of trouble-free service,
periodically clean the outside of the Motor Housing of any build-up of dust, etc. Though it is not anticipated that, if
installed correctly and in a suitable environment, there should be much build-up on the Motor, keeping the
Housing clean will allow the Motor to operate more efficiently.
Lubrication.
This is a ball bearing motor. The bearings have been lubricated at the factory. Motors that do not have re-grease
capability are factory lubricated for the normal life of the bearings.
Some motor designs use different bearings on each motor end. Noted below is a chart outlining the interval at
which the bearings of Motor should be lubricated, this based on the Bearing Sizes. This must be part of a regular
maintenance schedule.
Motor HP
Interval
in Hours
Drive End *
Opposite Drive End **
Weight of Grease Volume of Grease Weight of Grease
Ounces (Grams) In
3
(Teaspoon) Ounces (Grams)
20 / 25 /30 2,000 0.61 (17) 1.2 (3.9) 0.23 (7.2)
*
Drive End would be the end that is connected to the driven device (air end).
**Opposite Drive End would be the end that is connected to the fan assembly.
The above chart is based on a standard environment in which the Motor is operating at 40°C (104°F). For other
conditions, please multiply the Hour Interval from the chart above by the factor as indicated below.
Severity of Duty Factor Environmental Conditions
Standard 1.0 40°C (104°F) , clean, little corrosion
Severe 0.5 50°C (122°F), moderate dirt, corrosion
Extreme 0.1 > 50°C (122°F), severe dirt, abrasive dust
Low Temperature 1.0 < 30°C (86°F)
Lubricant.
Baldor motors are pre-greased, normally with Mobil Polyrex EM. Equivalent and compatible greases are Texaco
Polystar, Chevron SRI #2, and Shell Dolium BRB.
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