What Preservation can be done on electric motors while in storage?

Answer 1

• Bearings - Static Indentation

Motors should be stored in an area free from any source of

vibration since this can cause premature bearing failure due to

static indentation

• Lubrication

Motor bearings are lubricated at the factory for the shelf life of the

grease (approximately 4 years).

• Condensation

Motors should be stored in a warmed, ventilated storage area to

minimize the risk of condensation.

• Motors provided with drain holes

The drain holes should be kept open and clean. In storage the

motors should be stood such that the drain holes are at the lowest

point so that any condensation which does form will escape.

• Motors without drain holes

Provided that the environment is warmed and ventilated, no action

is necessary, although a periodic insulation test is advisable

(approximately every three months) to ensure it is maintained

above 1 megaohm.

If motors are to be used or stored in cold and/or damp

environments, we would recommend the fitting of anticondensation

heaters; the heaters should be permanently

energised if stored in these conditions.

N.B. Heater circuit to be isolated before inspection