Toro Groundmaster 31900, Руководство по обслуживанию

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Inspecting, Maintaining, and Testing the Battery (continued)
D. Charge at the rate and time given in Battery Charge Rate (page 6–67)
or until all cells specific gravity is 1.225 or greater with the difference
in specific gravity between the highest and lowest cell being less than
0.050. If you can not meet these charging conditions, replace the battery.
3. Do a high-discharge test with an adjustable load tester. This is a very reliable
means of testing a battery as it simulates the battery cold-cranking capacity.
A commercial battery load tester is required to do this test.
CAUTION
Follow the manufacturer's instructions when using a battery load
tester.
A. Check the voltage across the battery terminals before testing the battery.
If the voltage is less than 12.0 VDC, charge the battery before continuing
the test.
B. If you charge the battery, apply a 150 A load for 15 seconds to remove
the surface charge. Use a battery load tester following the manufacturer's
instructions.
C. Ensure that the battery terminals are free of corrosion.
D. Measure the electrolyte temperature of the center cell.
E. Connect a battery load tester to the battery terminals following the
manufacturer's instructions. Connect a digital multimeter to the battery
terminals
F. Apply a test load of 1/2 the cold cranking amperage rating of the battery;
refer to Battery Specifications (page 6–63) .
G. Take a test voltage reading while still under load after 15 seconds, then
immediately remove the load.
H. Use Minimum Voltage (page 6–65) to determine the minimum voltage for
the center cell electrolyte temperature reading.
I. If the test voltage is below the minimum, replace the battery. If the test
voltage is at or above the minimum, return the battery to service.
Charging the Battery
Battery Charge Level
Battery Charge Level Specific Gravity Open Circuit Voltage
100% 1.265 12.68
75% 1.225 12.45
50% 1.190 12.24
25%
1.155 12.06
0% 1.120 11.89
Battery Charge Rate
Battery Charge Level (Percent of Fully Charged) Battery
Reserve
Capacity
(Minutes)
75% 50% 25% 0%
Groundsmaster ® 3200, 3300 and 3310 Page 6–67 Electrical System: Service and Repairs
19240SL Rev A