TM 10-4320-344-10
2.5.3.1 Electric Manual Mode.
(Continued)
Suction and discharge pressures will vary depending on operating conditions
and engine speed.
h.
Use MANUAL THROTTLE INCREASE knob (6) to adjust engine speed as required to
obtain desired engine speed or pump discharge pressure.
Turn MANUAL
THROTTLE INCREASE knob (6) counterclockwise to decrease engine speed as
indicated on ENGINE TACHOMETER/HOURMETER (9) and pump discharge pressure as
indicated on PUMP DISCHARGE gauge (1).
Turn MANUAL THROTTLE INCREASE knob
(6) clockwise to increase engine speed and pump discharge pressure.
Downline pumping assemblies can be damaged if suction pressure falls below
10 psi.
All pumping assemblies can be damaged if discharge pressure rises
above 150 psi.
i .
Monitor suction pressure on PUMP SUCTION gauge (2).
Also monitor discharge
pressure on PUMP DISCHARGE gauge (1).
If suction pressure falls below 10
psi or discharge pressure rises above 150 psi, adjust MANUAL THROTTLE
INCREASE knob (6) as required, step h above.
If required, cut back to IDLE
until problem is corrected.
j .
Perform “During” PMCS (Table 2-12).
CAUTION
To prevent damage to engine, DO NOT shut down engine suddenly from
full-load running.
k.
l .
2.5.3.2
a .
b .
c .
d.
Shut down pumping assembly as follows:
(1) Turn MANUAL THROTTLE INCREASE knob (6) counterclockwise to IDLE
p o s i t i o n.
Let engine idle for 2 or 3 minutes.
(2) Push in START/STOP knob (3). Engine will shut down.
Perform "After" PMCS (Table 2-12).
Electric Automatic Mode.
Start and operate pumping assembly as follows:
Perform steps a through i of paragraph 2.5.3.1.
Turn MANUAL THROTTLE INCREASE knob (Figure 2-28, 3) clockwise to HIGH
p o s i t i o n.
Push MODE SWITCH (2) to NORMAL position.
Engine speed will adjust
automatically to changes in pump pressure rates.
Perform “During” PMCS (Table 2-12).
NOTE
CAUTION
2-106
