Hoover WindTunnel U8146-900 Owner's Manual page 12

Lubrication
The cleaner is equipped with bearings
that contain sufficient lubrication for the
life of the cleaner,
The
addition of lubri-
cant could cause damage,
Therefore,
do not add lubricant to any bearings.
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Thermal protector
An
internal thermal protector has been
designed into your cleaner to protect it
from overheating,
When the thermal protector activates,
the suction motor will stop running,
however the agitators will continue to
run.
If
this happens, pro_;eed as follows:
1. Turn the cleaner
OFF
and discon-
nect it from the electrical outlet.
2. Check dirt cup pre-filter,
HERA
cartridge filter and final filter for dirt
accumulation.
3. Refer to "Clearing blockages"
section.
4. When the motor cools,
the thermal
protector automatically resets and
cleaning may continue.
If the thermal protector continues to
activate after following the above steps,
your cleaner may need servicing (see
"Service" section).
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Hoover Cleaning
Perform a n c e
This Hoover Cleaning Performance Sys-
tem is for comparing the relative pro-
gressive performance of Hoover
uprights 0nly
and not for comparison
with any other brands.
The
majority of
this rating is based upon the American
Society for Testing and Materials
(ASTM)
Carpet Cleaning Effectiveness Test
(ASTM
Test
F608).
Other performance
factors include Hose Power
(ASTM
Test
F558), Surface Litter Cleaning, Hard
Floor Cleaning, Edge Cleaning, Cleaning
Width, and Air Filtration.
12
If a minor problem occurs, it usually can
be solved quite easily when the cause is
found by using the check list below.
Possible cause
Possible solution
• Not firmly plugged in
• Plug unit in firmly
• No voltage in wall plug
• Check fuse or breaker
• Blown fuse or tripped breaker
• Replace fuse or reset breaker
• Thermal protector activated
• Allow cleaner to cool (this will reset the
thermal p_otector) (see pg 12)
Possible cause
Possible solution
• Brush roll switch in OFF position.
• Turn brush roll switch ON
• Circuit breaker tripped.
• Reset circuit breaker as described in
Fig.
2-9
• Agitators are obstructed.
• Clear obstruction
Possible cause
Possible solution
• Thermal protector activated
• Allow cleaner to cool (this will reset the
thermal protector) (see pg. 12).
• Circuit breaker tripped
• Reset circuit breaker as described in
Fig.
2-9.
• Agitator brush rolls worn
• Replace [)rush rolls
• Dirt cup full
• Empty dirt cup
• Incorrect carpet height setting
•
Move
nozzle control knob to lower
setting
• Blockage in air flow passage
• Clear blockage
• HEPA cartridge filter clogged
• Clean HERA cartridge filter by either
tapping the side of the dirt cup or
removing the cartridge filter as de-
scribed in the "Filter assembly"
section.
• Pre-filter clogged
• Clean pre-filter as described in
"Filter assembly" section.
• Dirt cup not properly installed
• Position dirt cup properly (Fig. 3-5).
• Dirt cup lid not positioned properly
or missing
• Ensure that dirt cup lid is properly
positioned.
• Filter assembly not assembled
properly
• Ensure that filter assembly is
positioned properly
(Figs.
3-9 to 3-11).
Possible cause
Possible solution
• Incorrect carpet height setting
• Move nozzle control knob to a
higher setting
Possible cause
Possible solution
• Blockage in hose
• Clear blockage.
Possible cause
Possible solution
• Filter assembly not installed
properly
• Remove filter assembly from dirt cup
and ensure that
HERA
cartridge filter is
properly attached to pre-filter screen
and that entire filter assembly is
properly repositioned inside dirt cup.
(Figs.
3-6 through 3-11 ).
Note: Heavy
debris may settle to the
bottom of the dirt cup and prevent the
dirt from spinning without affecting
cleaning performance. The cleaner can
continue to be used even if the dirt is not
spinning inside the dirt cup.
However, if the dirt does stop spinning
AND
there is a noticeable decrease of
performance, check the items under
"Cleaner won't pick up'.
Possible cause
Possible solution
• Too much pressure being applied to
tool
• Continue using tool applying light
pressure.
• Blockage in turbine channel
• Remove blockage.
• Broken or worn belt
• Replace belt
• Low cleaner suction
• Check items under "Cleaner won't pick
up".