FIGURE 3-18. Generator Set Start-up.

TM 55-1905-223-24-4

(5)

Start the generator set. (FIGURE 3-18)

(6)

Frequency adjustment (speed) (FIGURE 3-19).Adjust to the desired frequency (50 or 60 Hz) by adjusting

the speed potentiometer (pot) (clockwise to increase)-

FIGURE 3-19. Frequency Adjustment (Speed).

(7)

Performance adjustments.

(a) Once the desired frequency is obtained (50 or 60 Hz), the two performance adjustments, GAIN and

STABILITY, can be made as follows.

At no load, slowly rotate the GAIN adjustment on the SPEED CONTROL unit slowly clockwise

until the engine surges. IF SURGING DOES NOT OCCUR WITH THE GAIN ADJUSTMENT IN

THE FULLY CLOCKWISE DIRECTION, MOVE THE FUEL LEVER TO INDUCE SURGING.

Rotate the screw counterclockwise 30 degrees to retain stability. (FIGURE 3-20)

FIGURE 3-20. Gain Adjustment.

3-25