Tennant 7200, Service Manual

Page: 233 / 272

ELECTRICAL
4-77 7200 330045 (10--99)
Operating Mode Entry Sequence
(how to activate)
Manual Mode; Manually operate discrete
functions without interlocks. In this mode, the
battery #3 LED will blink.
1. Push and hold the ES
t
button
2. Turn on the key
3. Hold the ES
t
button for 5 seconds
4. Release the ES
t
button
5. Battery #3 LED will begin to blink
MANUAL MODE
The purpose of the manual mode is to allow the
operator to exercise individual functions on the
machine. This mode disregards the effects of
various interlocks.
Do not
scrub with the
machine in this mode.
FOR SAFETY: When Servicing Machine,
Avoid Moving Parts. Do Not Wear Loose
Jackets, Shirts, Or Sleeves.
After entering the Manual Mode, the control
buttons assume the following functions:
SCRUB BUTTON
Pressing the Scrub button will turn on and lower
the main scrub head. Holding the Scrub button
while scrub is active will cause the down pressure
to scroll. The head will continue down as long
as the technician holds the scrub button. Care
must be exercised by the technician not to
hold the button too long. The actuator can
stall when fully extended. Damage to the
controller board and the actuator can result
from continuing to provide power to a stalled
actuator. The head will stay down with the
brushes running regardless of the state of the
propel pedal reverse switch. The head will
automatically rise when the user turns off the
brushes.
SQUEEGEE BUTTON
Pressing the Squeegee button will turn on the
vacuum fan and lower the squeegee. Reverse is
ignored.
ES
t
BUTTON
Pressing the ES
t
button will toggle the ES
t
pump on or off. In the on position, the ES
t
pump
will run regardless of the state of the floats. Care
should be taken not to run the ES
t
pump dry for
more than a few seconds. The ES
t
Air flush
valve will cycle on and off every 5 seconds.
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