Diagnoses and solutions to each type of problem
Symptoms
of
Problem
Location
of
Problem
Inspection Method
Cause of Problem
How to deal with
problem
What to do
Switch
■
Check if
contact(break) is
established when
switched on/off.
◆
Infiltration of foreign matter
◆
Overuse exceeding the durable
life
◆
Damage by impact
◆
Wear of contact point
◆
Damaged terminal in the lead wire
connection section
▶
Clean and remove
the
foreign matters
▶
Replace the switch
☞
Refer to
AS Manual
■
Check for connection
state in the switch
◆
Incorrect connection
▶
Reconnect
☞
Refer to
AS Manual
Cord
■
Check for any break
in the cord
◆
Breakage of wire near the cord
clip due to repetitive bending
during transit
◆
Cord was nipped or damaged by
careless handling during
operation
▶
Replace the cord
☞
Refer to
AS Manual
Armature
■
Check if the armature
coil has been broken
or burnt
◆
Overload occurred during
stressful operation
◆
Coil was damaged due to
infiltration of foreign matter
▶
Replace the
armature
▶
Clean & Replace
☞
Refer to
AS Manual
Stator
■
Check if the stator
coil has been broken
or burnt
◆
Overload occurred during
stressful operation
◆
Coil was damaged due to
infiltration of foreign matter
▶
Replace the stator
▶
Clean & Replace
☞
Refer to
AS Manual
Carbon
brush
■
Check if the carbon
brush makes contact
with armature
commutator
◆
Carbon worn off in excess of the
limit
◆
Effective contact is not made in
the armature commutator due to
infiltration of foreign matter into
brush holder
▶
Replace the
carbon brush
▶
Clean & Replace
☞
Refer to
AS Manual
Brush
holder
■
Check the mounting
state of the brush
holder
◆
Damaged brush holder due to
incorrect assembling
◆
Brush holder fell off
▶
Replace the brush
holder
☞
Refer to AS
Manual
Armature
■Check the teeth of A/R
■Check for any damage
in armature fan
◆
Wear of the teeth due to overuse
exceeding durable life
◆
Occurrence of damage of fan
during repair works
▶
Replace the
armature
☞
Refer to
AS Manual
Bearing
■Check for wear or
damage of bearing
◆
Wear due to aging of bearing
◆
Slip due to wear of bearing
mounting section
◆
Incorrect distance of pressed
insertion part of the bearing
▶
Replace the
bearing
▶
Replace the
incorrect part
☞
Refer to
AS Manual
Gear
■Check for wear or
damage of gear &
teeth
■
Abnormal noise is
generated
■
Check the state of
pushed-in gear
◆
Wear and damage due to overuse
in excess of durable life
◆
Defective teeth in teeth section
◆
Incorrect insertion of the gear
◆
Worn off gear due to lack of
lubricating Grease
▶
Replace the gear
▶
Correct the
pushed-in state
▶
Grease supplying
☞
Refer to
AS Manual
Rubber
packing
■
Check the rubber
packing to see if it is
missing or damaged
◆
Generation of noise/vibration from
the shaky armature
■
Assemble the
rubber packing
☞
Refer to
AS Manual
- 7 -
N
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p
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p
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V
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