User manual

Reelmaster 7000 Page 5 -- 43 Electrical System
Battery Testing
1. Conduct ahydrometertestofthebatteryelectrolyte.
IMPORTANT: Make sure thea rea around thecellsis
clean before opening the battery caps.
A. Measure the specific gravity of each cell with a
hydrometer. Draw electrolyte in and out of the
hydrometerbarrelpriortotakingareadingtowarm--
up the hydrometer. At the same time take the tem-
perature of the cell.
B. Temperature correct each cell reading. For each
10
o
F(6
o
C)above80
o
F(27
o
C)add0.004tothespe-
cificgravityreading.Foreach10
o
F(6
o
C)below80
o
F
(27
o
C)subtract0.004from the specific gravity read-
ing.
Example: Cell Temperature 100
o
F
Cell Gravity 1.245
100
o
F minus 80
o
F equals 20
o
F
(38
o
C minus 27
o
C equals 11
o
C)
20
o
F multiply by 0.004/10
o
F equals 0.008
(11
o
C multiply by 0.004/6
o
C equals 0.008)
ADD (conversion above) 0.008
Correction to 80
o
F(27
o
C) 1.253
C. If the difference between the highest and lowest
cell specific gravity is 0.050 or greater or the lowest
cellspecificgravityislessthan1.225,chargethebat-
tery. Charge at the recommended rateand timegiv-
en in Battery Charging or until all cells specific
gravity is 1.225or greater with thedifferencein spe-
cificgravitybetweenthehighestandlowestcellless
than 0.050. If these charging conditions can not be
met, replace the battery.
2. Perform a high--discharge test with an adjustable
load tester.
Thisisoneofthemostreliablemeansoftestingabattery
asitsimulatesthecold--crankingtest.Acommercialbat-
tery load tester is required to perform this test.
CAUTION
Follow the battery load tester manufacturer’s
instructions when using a load tester.
A. Check the voltage across the battery terminals
prior to testing the battery. If the voltage is less than
12.4 VDC, recharge the battery.
B. Ifthebatteryhasbeen charged,applya150amp
load for fifteen (15) seconds to remove the surface
charge. Use a battery load tester following the
manufacturer’s instructions.
C. Makesurebatteryterminalsarefreeofcorrosion.
D. Measure the temperature of the center battery
cell.
E. Connectabatteryloadtester tothebatterytermi-
nals following the load tester manufacturer’s in-
structions. Connect a digital multimeter to the
battery terminals.
F. Applyatestloadof330amps(onehalftheCrank-
ingPerformanceratingofthebattery)forfifteen(15)
seconds.
G. Take a battery voltage reading after the load has
been applied to the battery for fifteen (15) seconds,
then remove the load. Record the voltage reading.
H. Using the table below, determine the minimum
voltage for the cell temperature reading:
Minimum
Voltage
Battery Electrolyte
Temperature
9.6 70
o
F (and up) 21
o
C (and up)
9.5 60
o
F 16
o
C
9.4 50
o
F 10
o
C
9.3 40
o
F 4
o
C
9.1 30
o
F -- 1
o
C
8.9 20
o
F -- 7
o
C
8.7 10
o
F -- 12
o
C
8.5 0
o
F --18
o
C
I. If the test voltage is below the minimum, replace
the battery.Ifthetest voltage is at or above themini-
mum, return the battery to service.
Electrical
System