Gravely 989003, Руководство по обслуживанию

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Another important check is the specific gravity.The
specific gravity should be checked with the hydrometer.
The reading on the gauge should be above 1.225. If
the reading is allowed to fall below 1.225 specific
gravity you will have an insufficient charge. If this
happens charge the battery until specific gravity of
1.265 is reached over 3 successive readings. This
check should be done monthly.
The state of charge can be determined approximately
by the cell specific gravity or the rested open circuit
voltage at room temperature and the charging time can
be estimated. For example:
If using an automatic tapering 12 volt charger, choosing
a good quality 5 to 10 amps 15VDC minimum output
charger and charge for 3 to 12 hours according to the
battery state of charge (see table above) or until the
specific gravity in each cell reaches 1.255 - 1.265
specific gravity at 80
o
F (27
o
C).
If using a constant current charger, charge at 1 to 2
amperes for the time given on the table above or until
full specific gravity is reached.
IMPORTANT: Charging at higher rates will damage the
battery and cause excessive gassing and acid
spewing.
Storage
During the off season it is important to have the battery
in the same good condition or it will not deliver power
when needed.
1. Make sure the battery is fully charged and the
electrolyte is to the proper level.
2. Make sure the battery is clean (both the case and
terminals).
3. After cleaning the terminals, spread petroleum jelly
on the terminals to prevent loss of charge and
prevent corrosion.
4. Leave the cables disconnected.
5. It would be best to leave the battery in a cool, dry
area during the off season. This will slow down the
loss of charge during non-use periods.
6. Check your battery monthly during the off season
and if the battery has a low specific gravity apply a
charge to it. The battery is a perishable item and it
should be stored properly to obtain a long, useful
life.
Batteries not in use will self discharge and plates will
sulfate permanently if not recharged. If the battery will
not be used for more than three months, it should be
removed and stored in a cool, dry place. Any collection
of dirt, grease or electrolyte should be removed from
the top of the battery. The battery must be recharged
monthly or when the cell specific gravity reads less
than 1.255 specific gravity before reinstalling the
battery in the spring. It should always be fully
recharged.
NOTE: The specific gravity should be checked in each
cell and should be the same for all cells. A variation in a
cell reading could be an indication of a problem. Sub-
tract .004 from 1.265 for each 10
o
F (12
o
C) below 80
o
F
(27
o
C) or add .004 to 1.265 for each 10
o
F (12
o
C)
above 80
o
F (27
o
C).
Jump Starting
Jump starting, battery charging, or replacement is
required when the starter motor will not crank the
engine.
OCV Specific
Gravity
% of
Charge
Charging
Time
12.60 1.265 100% ---
12.40 1.225 75% 3 hours
12.20 1.180 50% 7 hours
12.00 1.130 25% 10 hours
11.80 1.100 0% 12 hours
WARNING: When charging battery, remove it
from the unit and make certain that you
connect the positive (+) lead of the charger to
the positive (+) terminal and the negative (-)
lead to the negative (-) terminal. Reverse
connections can cause sparks and potential
unsafe conditions.
WARNING: FROZEN BATTERIES CAN
EXPLODE and result in death or serious
injury.
DO NOT charge a frozen battery. Let the
battery thaw out before putting on a charger.