Ec- H2O System (Option); Ec- H2O Module Flush Procedure - Tennant 5680 Operator's Manual

ec- H2O SYSTEM (OPTION)

ec- H2O MODULE FLUSH PROCEDURE

This procedure is only required when an alarm
sounds and the ec- -H2O system indicator light
begins to blink red.
1. Drain the solution tank and recovery tank of
all water.
2. Pour 2 gallons (8 liters) of white or rice
vinegar into the solution tank at full strength.
Do not dilute.
(p/n 1050552 -- Vinegar, 2.5 gals/10 ltrs)
NOTE: Use white or rice vinegar only. The
acidity level should be between 4- -8%. Do not use
other acids for this procedure.
FOR SAFETY: When servicing machine, wear
protective gloves and eye protection when
handling vinegar.
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. Turn the key to the on position.
5. Press and release the ec- -H2O module flush
switch to start the flush cycle. The module is
located behind the front cover.
NOTE: The module will automatically shut off
when the flush cycle is complete (approx. 7
minutes). The module must run the full 7 minute
cycle in order to reset the system indicator light
and alarm.
Repeat flush procedure if the ec- -H2O
module does not reset. If module fails to
reset, contact an Authorized Service Center.
5680 330459 (10- -08)
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