TM 10-4320-344-24
The correct setting is 6.31 ± 0.05 V between pins 8 and 9 when the engine is
running.
e .
Measure voltage between pins 8 and 9 of process control while engine is
running.
f .
Refer to TM 10-4320-344-10 and stop engine.
g .
Carefully reconnect wire pin 16 of process control.
Remove and discard tag.
For the remaining steps the pumping assembly must be connected to a water
source capable of supplying adequate water to maintain inlet pressure up to
30 psi (207 kPa) and discharge pressure of 150 ± 5 psi (1033 ± 34 kPa).
h.
i .
j .
k.
l .
Refer to TM 10-4320-344-10 and restart engine manually, and again slowly
increase control panel speed potentiometer setting to fully clockwise
p o s i t i o n.
Set inlet pressure above 20 psi (142 kPa) and outlet pressure to approximately
150 psi (1033 kPa) at pumping assembly.
Move control mode toggle switch to “NORMAL" position.
The engine should be controlling at 150 ± 5.0 psi (1033 ± 34 kPa).
Slowly lower inlet pressure to just above 20 psi (138 kPa); and slowly adjust
high limit potentiometer counterclockwise until engine speed decreases.
Move high limit potentiometer clockwise until engine returns to previous speed
s e t t i n g.
The “GAIN= potentiometer can be used to help stabilize the engine when
pumping at 150 psi (1033 kPa) discharge pressure and approximately 30 psi
(207 kPa) inlet pressure.
m.
Slowly lower the inlet pressure to 10 psi (69 kPa) and adjust low limit
potentiometer so that engine is idling at 900 ± 50 RPM.
3-57
NOTE
NOTE
NOTE
NOTE
