Governor Speed Setting; Governor Performance; Starting Fuel Adjustment; System Troubleshooting - KIRLOSKAR DV Series O & M Manual

Crank the engine with DC power applied to the governor system. The actuator will energize to the maximum
fuel position until the engine starts. The governor system should control the engine at a low idle speed.
If the engine is unstable after starting, turn the GAIN and STABILITY adjustments counterclockwise until
the engine is stable.

Governor Speed Setting

The governed speed set point is increased by clockwise rotation of the SPEED adjustment control. Remote
speed adjustment can be obtained with an optional 5K Speed Trim Control. (See diagram on Page 31)

Governor Performance

Once the engine is at operating speed and at no load, the following governor performance adjustment can
be made.
1. Rotate the GAIN adjustment clockwise until instability develops. Gradually move the adjustment
counterclockwise until stability returns. Move the adjustment one division further counterclockwise
to insure stable performance.
2. Rotate the STABILITY adjustment clockwise until instability develops. Gradually move the adjustment
counterclockwise until stability returns. Move the adjustment one division further to insure stable
performance.
3. Gain and stability adjustments may require minor changes after engine load is applied. Normally,
adjustments made at no load achieve satisfactory performance. A strip chart recorder can be used to
further optimize the adjustments.
If instability cannot be corrected or further performance improvements are required, refer to the section on

SYSTEM TROUBLESHOOTING.

Starting Fuel Adjustment

The engine's exhaust smoke at start-up can be minimized by completing the following adjustments.
1. Place the engine in idle by connecting Terminals M & G.
2. Adjust the IDLE speed for as low a speed setting as the application allows.
3. Adjust the STARTING FUEL CCW until the engine speed begins to fall. Increase the STARTING
FUEL slightly so that the idle speed is returned to the desired level.
4. Stop the engine.
One of two methods of operation for the ESD5500E may now be selected.
Method 1 : Start the engine and accelerate directly to the operating speed (Gen Sets, etc.).
or
Method 2 : Start the engine and control at an idle speed for a period of time prior to accelerating to the
operating speed. This' method separates the starting process so that each may be optimized
for the lowest smoke emissions.
Method 1
Remove the connection between Terminals M & G. Start the engine and adjust the SPEED RAMPING for
the least smoke on acceleration from idle to rated speed. If the starting smoke is excessive, the STARTING
FUEL may need to be adjusted slightly CCW. If the starting time is too long, the STARTING FUEL may
need to be adjusted slightly CW.
Method 2
Replace the connection between Terminals M & G with a switch, usually an oil pressure switch. Start the
engine. If the starting smoke is excessive, the STARTING FUEL may need to be adjusted slightly CCW.
If the starting time is too long, the STARTING FUEL may need to be adjusted slightly CW.
When the switch opens, adjust the SPEED RAMPING for the least amount of smoke when accelerating
from idle speed to rated speed.
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