Kohler 12EFKOZD User Manual

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High Exhaust Temperature. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down immediately when
the engine exhaust temperature exceeds the default setting.
High Intake Air Temperature. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down because of high
intake air temperature. The shutdown occurs 5 seconds after the engine intake air reaches the temperature shutdown range.
The engine intake air temperature shutdown does not function during the first 30 seconds after startup.
High Generator Frequency. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down when the frequency
is above the overfrequency setting. See Figure 19.
Overfrequency Setting Range
Time Delay
Overfrequency Default Setting
102%-140% of nominal
10 sec.
110% of nominal
Figure 19 Overfrequency Specs
High Generator Voltage (Each Phase). The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down when
the voltage exceeds the overvoltage setting for the preset time delay period. See Figure 20 for overvoltage specifications.
Note:
Overvoltage can damage sensitive equipment in less than one second. Install separate overvoltage protection on online
equipment requiring faster than 2-second shutdown.
Overvoltage Setting Range
Time Delay Range
Overvoltage Default Setting
105%-135% of nominal
2-10 sec.
120% at 2 sec.
Figure 20 Overvoltage Specs
High Lube Oil Temperature. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down because of high
engine oil temperature. The shutdown occurs 5 seconds after the engine oil reaches the temperature shutdown range. The high
engine oil temperature shutdown does not function during the first 30 seconds after startup.
Locked Rotor (failed to crank). If none of the speed sensing inputs show engine rotation within the preset time delay of initiating
engine cranking, the ignition and crank circuits turn off for the preset period and the cycle repeats. The fault lamp illuminates
red, the alarm horn sounds, and the unit shuts down after the second cycle of the preset period of cranking.
Low Coolant Level. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down because of low coolant
level. Shutdown occurs 5 seconds after low coolant level is detected.
Low Engine Oil Level. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down because of low engine
oil level. This fault feature requires an optional low engine oil level sensor for the lamp to function.
Low Engine Speed. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down immediately when the
governed frequency on 50 and 60 Hz models drops below the under speed setting.
Low Fuel Level (diesel-powered models only). The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down
when the fuel tank level on diesel-fueled models approaches empty. This fault requires an optional low fuel level switch for the
lamp to function.
Low Fuel Pressure. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down when low fuel pressure
occurs. This fault requires an optional low fuel pressure switch for the lamp to function.
Low Generator Frequency. The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down when the frequency
drops below the underfrequency setting. See Figure 21 for underfrequency specifications.
Underfreq. Setting Range
Time Delay
Underfrequency Default Setting
80%-95% of nominal
10 sec. (short term)
60 sec. (long term)
90% of nominal
Figure 21 Underfrequency Specs
Low Generator Voltage (Each Phase). The fault lamp illuminates red, the alarm horn sounds, and the unit shuts down when
the voltage drops below the undervoltage setting for the time delay period. See Figure 22 for undervoltage specifications.
Undervoltage Setting Range
Time Delay Range
Undervoltage Default Setting
70%-95% of nominal
5-30 sec.
80% of nominal at 10 sec.
Figure 22 Undervoltage Specs

Kohler 12EFKOZD Specifications

General

Brand	Kohler
Model	12EFKOZD
Category	Portable Generator
Language	English