Tennant 235D, User Manual

Page: 68 / 203

MAINTENANCE
235 MM331 (3--94)
3-32
4. Apply heat to the bottom of the Thermo
Sentry
t
with a match or lighter. The
vacuum lever should move to the “Wet
Sweeping”position, the hopper door should
close, and their circuit breakers should trip.
If they do not, the system is malfunctioning.
A
B
03393
THERMO SENTRY
t
A. Thermo Sentry
t
B. Shaker Motor
5. Replace the filter cover and check the
hopper cover seal. It should be slightly
compressed.
6. After the Thermo Sentry
t
has cooled,
reset the circuit breakers behind the control
panel.
HOPPER DUST FILTER
The hopper dust filter filters the air which is drawn
up from the main brush compartment by the
vacuum fan. It is located inside the dust filter
compartment. Shake the excess dust from the
filter daily. Inspect and clean or replace the dust
filter after every 100 hours of operation.
To clean the dust filter use one of the following
methods:
D
TAPPING -- Tap the filter gently on a flat
surface with the dirty side down. Do not
damage the edges of the filter element or
the filter will not seat properly in the filter
frame.
D
AIR -- Blow compressed air, 35 psi (240
kPa) maximum, through the dust filter
opposite the direction of the arrows. This
may be done with the filter in the machine.
Always wear eye protection when using
compressed air.
FOR SAFETY: When Servicing Machine, Wear
Eye And Ear Protection When Using
Pressurized Air Or Water.
D
WATER -- Soak the dust filter in a water and
mild detergent solution. Rinse the dust filter
until it is clean. The maximum water
pressure allowable is 40 psi (275 kPa). Air
dry the wet filter; do not use compressed air.
NOTE: Be sure the dust filter is dry before
reinstalling it in the machine.