Kohler 20-2250 kW

TP-6161 1/1234 Section 3 Scheduled Maintenance
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-- 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 26.7
°C(80°F)
Hydrometer Reading 1.250
Acid Temperature --6.7
°C(20°F)
Subtract .024 Specific Gravity
Corrected Specific Gravity is 1.226
1.250 -- .024 = 1.226
Example No. 2
Temperature above 26.7
°C(80°F)
Hydrometer Reading 1.235
Acid Temperature 37.8
°C (100°F)
Add .008 Specific Gravity
Corrected Specific Gravity is
1.243
1.235 + .008 = 1.243
The temperature correction amounts to about .004 (4 points) of
specific gravity for each 5.5°C(10°F) change in temperature.
Correction
1-787
Figure 3-16 Specific Gravity Temperature Correction
3.10.4 Charging
Use a battery charger to maintain a fully charged battery
when the generator set is used in a standby application.
The engine battery-charging alternator charges the
battery only while the generator set is running.
Note: If the generator set is in a temporary prime power
application in which the generator set has periods
of inactivity, the controller circuitry may drain the
battery. If there is no power source for a battery
charger, place the controller in the prime power
mode, if equipped, or disconnect the battery from
the generator set.
3.11 Detroit Diesel Engine Control
Systems
Some generator sets equipped with Detroit Diesel
engines use a DDEC/MDEC system. Access the DDEC
control box inside the generator set junction box to
retrieve codes when performing routine maintenance or
troubleshooting the engine.
Note: DDC/MTU engines with MDEC requires the
following method:
D Use a personal computer software package available
from the manufacturer with a translator to access
stored codes. Follow the instructions provided with
the software.
Use the following data for informational purposes only.
Consult the engine literature for complete information
regarding operation and troubleshooting. See List of
Related Materials in the Introduction section. Contact
an authorized service distributor/dealer for service or
diagnostic equipment.
3.11.1 Features
The DDEC/MDEC system optimizes control of critical
engine functions and protects against serious engine
damage resulting from conditions such as the following:
D Low coolant level
D Low coolant pressure
D High coolant temperature
D Low oil pressure
D High oil temperature
The major components of the DDEC/MDEC system
include the electronic control module (ECM) and engine
sensors. The DDEC control box is located in the
generator set junction box.