Tennant 5680 Operator's Manual page 74

MAINTENANCE
Continue with the freeze protection procedure if
machine is equipped with the ec- -H2O system.
ec- H2O Model:
4. Press and release the flush switch on the
ec--H2O module to cycle the antifreeze
through ec--H2O system.When the
antifreeze is visible, press the switch again
to turn off the module. The module is located
behind the front cover.
IMPORTANT: Before operating machine, the
antifreeze must be flushed from the module as
described below.
If the antifreeze is not properly flushed from the
ec- -H2O system, the ec- -H2O module may detect
an error and not function (ec- -H2O switch indicator
light will turn red). If this occurs, reset key and
repeat the flush procedure as described below.
Flushing antifreeze from ec- -H2O module:
1. Drain the antifreeze from the solution tank
into a bucket.
2. Fill the solution tank with cool water until full
(See FILLING SOLUTION TANK).
3 Disconnect the black connector fitting at the
scrub head and place the hose into a bucket.
To access the connector fitting, you may
have to remove the front cover from the
machine.
4. Press and release the ec- -H2O module flush
switch to start the flush cycle. The module is
located behind the front cover.
When the water turns clear, press the
module switch again to stop the flush cycle.
Dispose the antifreeze in an environmentally safe
way according to local waste disposal regulations.
5. The machine is now ready for scrubbing.
72
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