Kohler RZ Series User Manual

TP-5631 7/96 Scheduled Maintenance 3-5
Checking Specific Gravity
It is not possible to check the specific gravity of a
maintenance free battery. Use a battery hydrometer to
check the specific gravity of the electrolyte in each
batterycell. Whileholdingthehydrometervertical,read
thenumberontheglassbulbatthetopoftheelectrolyte
level. Use the correction table in Figure 3-3 if the
hydrometer used does not have a correction table.
Determine specific gravity and electrolyte temperature
of battery cells. Locate temperature in Figure 3-3 and
adjust specificgravity by amount shown. Thebatteryis
fully charged if the specific gravity is 1.260 at an
electrolyte temperature of 80°F (26.7°C). The
differencebetweenspecificgravities ofeachcellshould
not exceed±0.01. The battery shouldbechargedif the
specific gravity is below 1.215 at an electrolyte
temperature of 80°F (26.7°C).
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 NO. 1
Temperature below 80°F
(26.7°C)
Hydrometer Reading 1.250
Acid Temperature 20°F
(-6.7°C)
Subtract .024 Sp. Gravity
Corrected Sp. Gravity is 1.226
EXAMPLE NO. 2
Temperature above 80°F
(26.7°C)
Hydrometer Reading 1.235
Acid Temperature 100°F
(37.8°C)
Add .008 Sp. Gravity
Corrected Specific Gravity is
1.243
The temperature correction amounts toabout .004 (4 points) of
specific gravity for each 10°F (5.5°C) change in temperature.
Correction
Figure 3-3. Specific Gravity Temperature
Correction

Kohler RZ Series Specifications

General

Brand	Kohler
Model	RZ Series
Category	Portable Generator
Language	English