Kohler 12RES Operation And Installation

TP-6195 1/0416 Section 3 Scheduled Maintenance
3.8.3 Checking Electrolyte Specific
Gravity
Use a battery hydrometer to check the specific gravity of
the electrolyte in each battery cell. Use the
hydrometer’s test instructions, if available, or Figure 3-9
for bead-type testers.
Number of
Beads Floating
Battery
Condition
5 Overcharged
4 Full Charge
3 Adequate Charge
1, 2 Low Charge
0 Battery Dead
Figure 3-9 Electrolyte Testing Chart
Temperature affects specific gravity; correct the
indicated hydrometer readings for temperature. If the
hydrometer does not have a correction table, use
Figure 3-10. A fully charged battery should have a
specific gravity of 1.260 with the electrolyte at 26.7_C
(80_F). Charge the battery if the specific gravity from
cell to cell varies by more than 0.01. Charge the battery
if the specific gravity is less than 1.215 with the
electrolyte at 26.7_C(80_F).
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
-- 12.2
-- 6 . 7
-- 1 . 1
4.4
10
21.1
26.7
32.2
37.8
43.3
48.9
54.4
60.0
65.6
71.1
15.6
+ .032
+ .030
+ .028
+ .026
+ .024
+ .022
+ .020
+ .018
+ .016
+ .014
+ .012
+ .010
+ .008
+ .006
+ .004
+ .002
0
-- .002
-- .004
--. 006
-- .008
-- .010
-- .012
-- .014
-- .016
-- .018
-- .020
-- .022
-- .024
-- .026
-- .028
°C °F
Example 1:
Temperature below 26.7
°C(80°F)
Hydrometer Reading 1.250
Electrolyte Temperature
--6.7
°C(20°F)
Subtract .024 Specific Gravity
Corrected Specific Gravity is 1.226
Example 2:
Temperature above 26.7
°C(80°F)
Hydrometer Reading 1.235
Electrolyte Temperature
37.8
°C (100°F)
Add .008 Specific Gravity
Corrected Specific Gravity is
1.243
The temperature correction amounts to about .004 (4 points) of
specific gravity for each 5.5°C(10°F) change in electrolyte
temperature.
Correction
5810322
Figure 3-10 Specific Gravity Temperature Correction

Kohler 12RES Specifications

General

Voltage	120/240 V
Frequency	60 Hz
Power Output	12, 000 watts
Phase	Single
Starting System	Automatic
Transfer Switch	Optional