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air-to-air heat exchanger of TEAAC motors should be cleaned using a supplied tube brush
having synthetic fiber bristles (not wire of any type). The standard cooler is equipped with steel
tubes, however, in special cases aluminum tubes may be used and wire brushes can seriously
erode the tube interiors over several cleanings. All tube brushing should be conducted from the
front (fan end) toward the drive end of the motor such that dislodged dirt will not fall into the fan
housing.
The stator windings of motors with open ventilation systems can become contaminated with
dirt and other substances brought into the motor by the ventilating air. Such contaminants can
impair cooling of the winding by clogging the air passages in the winding end-turns and vent
CAUTION
CAUTION
!
Water spray washing of motors is not recommended. Manual or compressed air
cleaning is preferred. If it becomes necessary to spray wash a motor, it should
be done with extreme care. Do not aim high pressure sprays directly at air inlet
openings, conduit connections, shaft seals, or gasketed surfaces to prevent the
possibility of forcing water inside the machine.