Inspect the brush drive motor carbon brushes for wear.
Replace the brushes when they are 1/2 in. (13mm.) in
length.
Inspect the vacuum motor carbon brushes for wear.
Replace the brushes when they are 7/16 in. (11mm.) in
length.
Battery Replacement Notes
Entire Pack.
It is always recommended to replace all batteries in the
pack at the same time.
One or more batteries out of the pack. This is not
recommended. Replacing just one or two batteries out of
the pack can lead to the following:
Overcharging the new, or the remaining original, batteries.
Undercharging the new, or remaining original, batteries.
Over discharging either the new or the remaining original
batteries.
If you wish to only replace some of the batteries in the pack,
follow these steps for best results:
Replacement batteries must always be of the same battery
manufacturer, model, and amp-hour rating as the
remaining batteries in the pack.
Never mix batteries from different manufacturers in the
same pack.
Fully charge both the new battery, and the remaining
original batteries. (specific gravity = 1.265 minimum, use a
hydrometer)
Use a replacement battery that is close to the same age as
the remaining original ones.
Do not run the machine as long for about 20 cycles. For
example, if you used to get 4 hrs runtime, only run it for 2.5
hrs, and then charge the batteries completely.
Opportunity charge whenever possible.
Equalize after 30 days.
Battery Charger
The onboard battery charger supplied with this machine is
capable of charging lead acid batteries from 185 to 350ah
capacity. There is no need to change algorithms or settings
based on battery manufacturer, or battery size.
The charger can also be set to charge flooded (wet) cell,
AGM, or Gel batteries. LED's on the charger indicate which
type of battery the charger is set to charge. One setting is
for Flooded and (most) AGM batteries, the other setting is
only for Crown and Trojan AGM and GEL batteries.
Depending on the battery charger model, the charger can
operate on 100/115/230 VAC 1ph 50/60 HZ power, and will
automatically detect these input voltages. Before
(Flooded only)
connecting the battery charger to power, check the label on
the battery charger to verify the proper input power.
Determining Your Battery Type
CAUTION: DIFFERENT BATTERY TYPES HAVE
DIFFERENT CHARGING REQUIREMENTS. FAILURE TO
PROPERLY IDENTIFY YOUR BATTERY TYPE AND SET
THE CHARGER ACCORDINGLY WILL RESULT IN
BATTERY DAMAGE, AND VOID THE WARRANTY.
Your machine may have been ordered with batteries
installed at the NSS factory. The standard battery type,
normally supplied by NSS, is the Flooded (wet) cell lead
acid battery. Gel and AGM sealed batteries may also be
available at customer request.
Flooded (wet) batteries can be easily identified by the
removable cell caps. Removing the caps allows inspection
of the liquid electrolyte (sulfuric acid) level in each cell.
AGM (Absorbed Glass Mat) batteries are sealed,
maintenance free batteries. The do not have cell caps
intended for removal. Look for "AGM" printed on the tops
or sides of the batteries.
Gel (gelled electrolyte) batteries are also sealed,
maintenance free batteries. The do not have cell caps
intended for removal. Look for "GEL" printed on the tops
or sides of the batteries.
Battery Charger Indicator LED's
Your battery charger is equipped with LEDs that indicate
the following:
Battery Type Setting. Either of these two LEDs will be
illuminated, anytime the charger is plugged in, to signal
which type(s) of batteries the charger is configured to
charge. The two options available are:
oWet / AGM: When this LED is illuminated, the
charger is configured to charge either flooded (wet),
or AGM batteries.
oGel Cell. When this LED is illuminated, the charger is
configured to charge Gel batteries ONLY.
EXCEPTION: Crown and Trojan AGMs are to be
charged with the Gel setting.
State of Charge Indicators. Four additional LEDs provide
information about the charge level of the batteries during
charging.
o30%, 60%, 90% and 100%.
Fault Indications. During charging, the charger provides
feedback about the charge process and any problems
detected. It will provide feedback and signal the type of
problem by flashing LEDs as described below: