Tennant 7200, Service Manual

Page: 226 / 272

ELECTRICAL
4-70
7200 330045 (10--99)
Operating Mode Entry Sequence
(how to activate)
Normal Mode ; Normal operation. Default (when key is turned on)
NORMAL MODE
The purpose of the normal mode is for the general
operation of the machine. The machine will
normally start in this mode. What follows is a brief
description of each of the operations in the normal
mode.
SCRUB BUTTON
The purpose of the scrub button is to turn the
scrubbing operations on and off and adjust the
scrubbing down pressure. Pressing the scrub
button while the scrubbing operation is currently
inactive will initiate the following actions:
1. Illuminate the LED’s that indicate the default
down pressure. Note: Hold the scrub button
down to get another down pressure setting.
See note 4 below.
2. If the machine is not in reverse, the
vacuum fan will turn on, the squeegee will
drop, and the brushes will drop. Putting the
machine into reverse will raise the squeegee
and, after a slight delay, turn off the vacuum
fan.
3. If the machine is in forward, the brush
head will drop, water valve will turn on, and
the brushes will start turning. Putting the
machine into neutral while scrubbing will turn
off the brushes and, after a short delay,
slightly raise the scrub head.
4. If the operator holds the scrub button after
the LED’s become illuminated, the machine
will begin to scroll through the different scrub
down pressures. The controller stores the
pressure displayed as the new default after
the user releases the scrub button.
Pressing and releasing the scrub button while the
machine is currently in the scrub mode will initiate
the following actions.
1. The scrub motors will turn off and the scrub
head will start to raise.
2. The machine will delay a few seconds and
the squeegee will start to raise.
3. The vacuum fan will turn off after a slight
delay.