Miele S171i, Руководство по обслуживанию

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Technical Information
S171 i / S172 i
9
CONDITION
Motor fails to operate
(no noise is heard
at all).
CHECK POINT
Power cord
Motor continuity
Carbon brush not
contacting the
commutator
ON / OFF Switch
Power control
Thermal fuse
METHOD OF INSPECTION
Check power cord continuity.
Check continuity of motor and lead wires.
Check if there is gap between
carbon brush and commutator.
Check continuity across the switch
terminals.
Short-circuit yellow and black lead wires from the
power control and connect the vacuum cleaner.
Check thermal fuse continuity.
CAUSE/REMEDY
If there is no continuity, replace
it.
If there is gap between carbon
brush and commutator, replace
both carbon brushes.
If there is no continuity, replace
the switch.
If the motor works, replace the
power control.
If there is no continuity, replace
it.
Motor runs but no
suction
Hose or suction
pipe
Dust bag or central
filter
Check for clog in hose or suction pipe.
Check if dust bag or central filter is clogged or full.
If there is a clog, remove it.
If the paper bag is full, replace
it. If central filter is dirty clean or
replace it
Noise or vibration
Motor fan
Carbon brushes
Rotary brush
(bearing
support A-B).
Rotary brush
(bearings)
Check for dust accumulated in motor fan (It could
happen if the vacuum has been used with a
broken dust bag or without a filter).
Check for uneven wear of carbon brushes.
Remove the rotary brush assembly and check if
bearing support A-B is broken or
deformed.
Place the rotary brush assembly on a flat surface
and turn the rotary brush to check for bearing
noise or clearance.
In this case, replace the motor
and check filter condition (never
dismantle the motor fan).
Replace carbon brushes (be
sure to change both).
If bearing support A or B is
defective, replace it.
If there is bearing noise or
clearance, replace the rotary
brush assembly.
Rotary brush does
not turn
Belt
Beater bar selector
Remove the base plate and check if the
belt is broken or loose.
Remove the base plate and check if the lever
selector changes position. If the belt is broken, replace it. If
loose, re-install it.
If the lever selector does not
change position, replace it.
Rotary brush does
not stop.
Pulleys
Beater bar selector
Remove base plate and check if the two pulleys
are blocked or out of position.
Remove the base plate and check if the
lever selector changes position.
If the two pulleys are blocked,
replace the rotary brush
assemble.
If the lever selector does not
change position, replace it.