23
Maintenance
86037810 Chariot iVacuum
Checking Battery Specific Gravity
Use a hydrometer to check the battery specific gravity.
NOTE: Do not take readings immediately after adding
distilled water, if the water and acid are not
thoroughly mixed, the reading may not be accurate.
Check the hydrometer readings against this chart.
NOTE: If the readings are taken when the battery
electrolyte is any temperature other than 80°F (27°C),
the reading must be temperature corrected.
To find the corrected specific gravity reading when the
temperature of the battery electrolyte is other than 80°F
(27°): Add (+) to the specific gravity reading 0.004 (4
points), for each 10°F (6°C) above 80° (27°C).
Subtract (-) from the specific reading 0.004 (4 points),
for each 10°F (6°C) below 80°F (27°C).
Charging Batteries
When servicing machine, avoid contact with
battery acid.
Batteries emit hydrogen gas. Explosion or fire can
result. Keep sparks and open flame away. Keep
covers open when charging.
Wear eye protection and protective clothing when
working with batteries.
Charge batteries in a well ventilated area.
Use a 36 volt, 20 amp maximum output DC charger
which will automatically shut off when the batteries are
fully charged.
1.
Empty recovery tank.
2.
Stop the machine in a clean, well ventilated area
next to the charger.
3.
Turn "OFF" machine.
FOR SAFETY: Before leaving or servicing
machine; stop on level surface, turn off machine
and remove key.
4.
Unplug the machine from the battery pack.
Remove front cover. Disconnect recovery hose
from "Y" tube. Raise recovery tank and verify prop
rod latch is safely engaged.
Batteries emit hydrogen gas. Explosion or fire can
result. Keep sparks and open flame away. Keep
covers open when charging.
5.
Check the electrolyte level in each battery cell.
Before charging, add just enough distilled water to
cover the plates. After charging is complete, add
just enough distilled water to bring up the level to
the indicator ring. If the water level is too high
before charging, normal expansion rate of the elec-
trolyte may cause an overflow resulting in a loss of
battery acid balance and damage the machine.
SPECIFIC GRAVITY @
80° F (27°C)
BATTERY CONDITION
1.265
100% CHARGED
1.225
75% CHARGED
1.190
50% CHARGED
1.155
25% CHARGED
1.120
DISCHARGED
