Operation and maintenance manual BOX units rev.08
page 25 of 26
TROUBLE SHOOTING
PROBLEM
POSSIBLE CAUSES
REMEDY (1)
REMEDY (2)
the motor doesn't start
a)
problems in the power supply.
b)
faulty electrical wiring.
c)
faulty motor.
d)
wrong size of the motor
check the connections and the
power supply
replace the motor.
the current absorption of the
electric motor is too high
a)
wrong motor size.
b)
motor faulty.
check the
installation/application
replace the motor and
eventually also the gearbox
the temperature of the motor
frame is too high
a)
wrong motor size.
b)
motor faulty.
check the
installation/application
replace the motor and
eventually also the gearbox
the temperature of the gearbox
housing is too high
a)
Wrong gearbox size.
b)
Wrong mounting position.
c)
Not enough lubricant
check the
installation/application
correct the mounting position or
the lubricant level
output speed is different from
expected
a)
wrong reduction ratio.
b)
wrong motor polarity.
a)
verify the reduction ratio.
b)
verify the motor polarity
replace the gearbox and/or the
electric motor
oil leaks from the shafts
a)
defective seals.
b)
seal seats on the shafts
a)
replace the seals.
b)
replace the seals and install
them in a very slightly
different position or replace
the shafts.
send the unit to Motive
The output shaft turns in the
wrong sense
wrong electric motor wiring
invert the position of the 2
phases of the electrical motor
power supply
cyclical noise in the gearbox
damaged gears
no practical problem if the
noise is not important in the
specific application.
send the unit to Motive if the
noise is important in the
specific application
not cyclical noise inside the
gearbox
dirty inside the gearbox
no practical problem if the
noise is not important in the
specific application, or if it
disappears after 3 working
hours
send the unit to Motive if the
noise is important in the
specific application
a whistling noise is coming from
the gearbox
a)
defective bearings or not correctly
assembled.
b)
defective gears.
c)
not enough lubricant
a)
reassemble or replace the
bearings
b)
replace the gears
c)
put the correct quantity of
lubricant
send the unit to Motive
vibrations of the electric motor
coupling geometrical errors
a)
check the geometrical
tolerances of the electric
motor flange. Eventually
replace
b)
check geometry and
tolerances of the electric
motor shaft key. Eventually
replace
c)
Check the motor vibration
replace the motor with a Motive
one.
