Toro ProForce Debris Service Manual page 49

PRELIMINARY – For Toro Distributor and Toro Company use only.
Charging
To minimize possible damage to the battery and allow
the battery to be fully charged, the slow charging meth-
od is presented here. This charging method can be ac-
complished with a constant current battery charger
which is commonly available.
Follow the battery charger manufacturer's
instructions when using a battery charger.
NOTE: Using specific gravity of the battery cells is the
most accurate method of determining battery condition.
1. Determine the battery charge level from either its
specific gravity or open circuit voltage.
Battery Charge
Level
100%
75%
50%
25%
0%
2. Determine the charging time and rate using the bat-
tery charger manufacturer's instructions or the fol-
lowing table:
Battery
Reserve
Capacity Capacity
75%
(Minutes)
80 or less 3.8 hrs
@
3 amps
81 to 125 5.3 hrs
@
4 amps
126 to 5.5 hrs
170 @
5 amps
171 to 5.8 hrs
250 @
6 amps
above 6 hrs
250 @
10 amps
ProForce Debris Blower
CAUTION
Specific Open Circuit
Gravity Voltage
1.265 12.68
1.225 12.45
1.190 12.24
1.155 12.06
1.120 11.89
Battery Charge Level
(Percent of Fully Charged)
50% 25%
7.5 hrs 11.3 hrs
@ @
3 amps 3 amps
10.5 hrs 15.8 hrs
@ @
4 amps 4 amps
11 hrs 16.5 hrs
@ @
5 amps 5 amps
11.5 hrs 17.3 hrs
@ @
6 amps 6 amps
12 hrs 18 hrs
@ @
10 amps 10 amps
Do not charge a frozen battery because it can ex-
plode and cause injury. Let the battery warm to
o
60 F (15.5
Charge the battery in a well−ventilated place to
dissipate gases produced from charging. These
gases are explosive; keep open flame and elec-
trical spark away from the battery. Do not smoke.
Nausea may result if the gases are inhaled. Un-
plug the charger from the electrical outlet before
connecting or disconnecting the charger leads
from the battery posts.
3. Following the battery charger manufacturer's
instructions, connect the charger cables to the battery.
Make sure a good connection is made.
4. Charge the battery following the battery charger
manufacturer's instructions.
5. Occasionally check the temperature of the battery
electrolyte. If the temperature exceeds 125
or the electrolyte is violently gassing or spewing, the
charging rate must be lowered or temporarily stopped.
6. Three hours prior to the end of the charging, mea-
sure the specific gravity of a battery cell once per hour.
The battery is fully charged when the cells are gassing
freely at a low charging rate and there is less than a
0.003 change in specific gravity for three consecutive
readings.
0%
15 hrs
@
3 amps
21 hrs
@
4 amps
22 hrs
@
5 amps
23 hrs
@
6 amps
24 hrs
@
10 amps
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CAUTION
o
C) before connecting to a charger.
Electrical System
o o
F (51.6 C)