Tennant 515, Operator'S Manual

Page: 17 / 84

OPERATION
15
515 MM420 (1--96)
SCRUB SWITCH
The scrub switch controls the scrubbing
operations. The scrub switch also sets the scrub
brush pressure.
The scrubbing operations include the following.
The scrub head lowers and the brushes turn on.
The rear squeegee will lower and the vacuum will
start. Also, the optional ES
t
system will start.
Start scrubbing: Press the switch. The indicators
will light to the preset brush pressure. The
scrubbing system will start when the machine
moves forward.
NOTE: The brush pressure setting, the edge
scrub, and the ES
t
system will default to the last
setting used when the scrubbing operations are
started again.
Stop scrubbing: Press the switch. The indicators
will go off. First the scrub brushes will stop and
raise, then the rear squeegee will raise and the
vacuum will shut off.
Scrub brush pressure: Press and hold the scrub
switch. The brush pressure will scroll through the
four settings. Whatever pressure setting is
selected when the switch is released, will be the
new default brush pressure setting.
The brush pressure has four positions. Under
normal conditions, the brush pressure should be
set in the minimum settings. Under heavy grime
conditions, the brush pressure should be set in
the maximum settings. Travel speed and floor
conditions will affect the scrubbing performance.
NOTE: The rear squeegee will raise and the
vacuum will shut off when the machine travels in
reverse. The squeegee will lower and the vacuum
starts again when the machine travels forward.
NOTE: The scrub brushes will stop when the
machine is stopped for a short time. The brushes
will start again when the machine travels forward.
10881