Hydrotech Classic Series Stenner Basic Service Manual - Manual (Page 40)

39
Motor
How it works
A cylindrical rotor with shaft is encased within a magnetic
coil. When power is applied to the coil, the rotor rotates. The
rotor’s directional rotation is determined by the orientation of
the copper shaded poles on the coil. The helical end of the
rotor engages the series of gears in the gearbox.
Motor Failure
Definition
Power is applied to the motor and the rotor fails to rotate.
Motor Failure
Causes
Water intrusion
Allow ventilation to the fan-cooled motor while protecting
against water intrusion.
Chemical vapors
Can corrode or rust the coil, rotor, and bearings resulting in
the motor’s inability to rotate freely.
Burned motor coil
Motor voltage must match power supply. Use volt meter to confirm.
Damaged bearing brackets
Cracked or broken bearing brackets result in rotor misalignment,
which causes the rotor to bind to the magnetic coil causing a
humming sound.
BEST PRACTICE
Factory recommended
Avoid mounting pumps over
an open chemical solution
tank. Proper ventilation will
extend motor life. Use a
Stenner Rain Roof for
outdoor installations or in
a moist environment.