
OPERATION
14
S20 Gas/LP 9006719 (8
−
2009)
CHARGING SYSTEM LIGHT
The charging system light comes on when the
alternator is not operating within normal range;
13.5 to 14.5 V. If the light comes on, stop
operating the machine. Contact a TENNANT
service representative.
ENGINE WATER TEMPERATURE LIGHT
The engine water temperature light comes on
when the temperature of the engine coolant is
more than 113
_
C (235
_
F). If the light comes on,
stop operating the machine. Contact a TENNANT
service representative.
CLOGGED DUST FILTER LIGHT
The clogged dust filter light comes on when the
hopper dust filter is clogged.
To clean the filter, hold the vacuum and filter
shaker lever in the
Filter shaker
position. If the
clogged dust filter light remains lit, manually clean
the hopper dust filter. See
HOPPER DUST
FILTER
in the
MAINTENANCE section of this
manual.
NOTE: The clogged dust filter light also comes
on when the hopper door is closed and the
vacuum fan is on.
HOPPER TEMPERATURE LIGHT
−
THERMO
−
SENTRY
The hopper temperature light comes on when the
Thermo
−
Sentry senses that there is excessive
heat in the hopper, possibly from a fire. The
Thermo
−
Sentry will also move the vacuum and
filter shaker lever to the
Vacuum fan off
position.
If this happens, stop the machine, eliminate the
source of the heat, and return the lever to the
Vacuum fan on
position.