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24 - Electrical System
Troubleshooting
Onboard Charger Interlock
If the Main Machine Controller believes that the
onboard battery charger is active, it will disable
all machine function, including access to the
menu system In the event that the charger fails
or was removed, you will be locked out of the
system menus to change the configuration back
to no charger (If removing the charger, make
sure to change the configuration first.)
If for whatever reason, the machine believes it
is being charged when it is not, you will need to
temporarily jumper the green interlock wire to
battery-positive The green interlock wire is located
in the upper-left-rear corner of the battery bay
behind the operator’s seat
With the interlock wire temporarily jumpered to B+,
go into the Configuration menu and set Charger to
No When complete, remove the temporary jumper
Battery Testing
A battery problem is usually recognized by the machine operator as a decrease in the machine’s running
time. This condition is usually caused by one or more “dead cells” in the battery system. There are 2 ways to
find a dead cell:
• Use a hydrometer to check the specific gravity (or “state of charge”) of the fluid in each cell. A dead cell is
one that reads 50 points (or more) lower than the other cells
•
Use a volt meter to check the voltage of each battery Look for a battery with a voltage that is 1 or 2 volts
less than the other batteries. Check under the following conditions:
– With the batteries fully charged,
– With the scrub and drive motors running,
– With the batteries discharged, but still above the voltage cutoff threshold
If the batteries in the machine are more than 1 year old, it’s usually best to replace the whole set, rather than
replacing one or two batteries Mixing old and new batteries can result in over-charging problems
The Main Machine Controller also monitors the battery voltage, and progressively disables functionality
when the batteries are reaching a full depleted voltage These voltage thresholds will vary depending on the
type of battery installed (configured in the controller). For example, wet batteries are permitted to drain to a
lower voltage than AGM batteries
Green
Interlock
Wire
Configuration
Ecoflex
Cancel
Save
Edit
Opt Pump
Battery
Charger
Yes
None
Wet
No