Trouble
MIXER RUNS WITH JERKY
CLATTERING NOISE ON
LOW
SPEED
LOUD RUMBLING NOISE
MIXER RUNS BUT WILL
NOT COME UP TO HIGH
SPEED. HAS POWER BUT
LABORS AND USES
EXCESSIVE WATTS
MIXER WILL NOT
SHUT
OFF
WITH
SWITCH KNOB
SWITCH KNOB CLICKS BUT
MIXER WILL NOT RUN
OR
BUZZ
ELECTRICAL SHOCK TO
OPERAT
OR
MIXER WILL NOT RUN AL-
THOUGH SWITCH CLICKS
AND MOTOR BUZZES
28
Possible Cause
Loose connection from center
top
of
resistor
to
control plate (two black
l
ea
d
s)
.
Tight bearing.
Ball in end
of
armature shaft worn
or flat.
Worn thrust ball bearing.
Tight bearing if no smoke
is
apparent.
Burned
out
armature
if
rriixer smokes.
Toggle switch
not
correctly adjusted
with control link
and
cam assembly.
Open electrical circuit.
Bare lead touching inside
of
housing.
Frozen bearing.
Remedy
Check this connection to make certain it
is
not
loose.
First check the bearing
in
the planetary
beater shaft.
If
the bearing can be easily
moved with a back-and-forth twisting
effort, it
is
satisfactory.
If
it binds,
re-
move the planetary and recheck the
mixer.
If
the mixer still uses excessive
watts, it must be disassem bled and the
other
bearings checked.
Disassemble the motor and replace the
ball.
Remove
the
gears from the gear case
and
the
armature from the
motor
hous-
ing, then replace the thrust ball bearing.
First check
the
bearing
in
the planetary
beater shaft.
If
the bearing can be easily
moved with a back-and-forth twisting
effort,
it
is satisfactory.
If
it binds, re-
move the planetary and recheck the
mixer.
If
the mixer still uses excessive
watts,
it
must be disassembled and the
other
bearings checked.
Disassemble the motor and replace the
armature assembly.
Remove trim and turn the switch hex
nuts until toggle switch arm properly
engages
point
on
control cam.
Progressively disassemble the speed con-
trol mechanism and
motor
and perform
the following checks until the open
ci
r-
cu
it
is
found:
Faulty plug.
Faulty
attachment
cord.
Bad connection in speed control mechanism.
Faulty speed control plate.
Bad connection
to
toggle switch.
Wire lead clip detached from brush holder.
Bad connection between field
and
cord.
Open-circuited armature.
Open-circuited field.
Pull
the
plug, turn the switch
on
and
check for a ground with a test lamp.
Touch one prong
of
the
test lamp
to
a
prong
of
th
e plug and the other prong to
an unpa
int
ed spot on the housing.
If
the
lamp lights
the
mixer is grounded.
Ex
-
amine
all the wiring in
the
order
of
its
accessibility until
the
grounded lead
is
fo
und
.
If
mixer has radio interference
condenser wired between stator
sc
rew and
power cord, remove and discard.
Examine a
ll
the
bearings in the order
of
th
eir accessibility until the frozen
bearing
is
found.
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