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DISENGAGING FIRE PUMP.
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TM-5-4210-224-14-P 250 6PM Mini-Pumper Firefighting Truck Model No.:CM-KFT-3 Manual
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OPERATING FROM WATER TANK (PUMP AND ROLL MODE).
TM5--4210-224-14&P
2-18. OPERATING FROM WATER TANK (STATIONARY MODE).
a.
Engage fire pump as described in paragraph 2-15.
b.
Close all drain and valve controls.
c.
Open tank to pump valve control handle (13, figure 2-1) to allow water to flow from tank to pump.
d.
Turn heat exchanger control switch (20, figure 2-1) to the "ON" position.
e.
Pull open desired discharge valve control(s).
f.
Turn engine throttle control knob (3, figure 2-1) counterclockwise to accelerate engine until master pressure
gauge (9) indicates desired discharge pressure.
g.
Turn pressure relief control knob (12, figure 2-1) counterclockwise to decrease pump discharge operating
pressure, clockwise to increase pump operating pressure.
CAUTION
Fire pump will heat up rapidly if pump is operated with all discharge valves closed. Prolonged
operation will cause damage from overheating.
NOTE
Periodically check engine temperature gauge (1, figure 2-1) for normal engine-operating
temperature range of 100F (55.5C) to 250F (138.8C).
If a shutdown is required for changing hoses or any other reason, slow the engine to decrease
water pressure to 30 psi and close the discharge valves.  Open tank-to-pump valve control
handle (13, figure 2-1) and tank fill control handle (14) to recirculate the water.
h.
Shut down fire pump by turning engine throttle control knob (3, figure 2-1) clockwise to throttle engine down.
i.
Turn heat exchanger control switch (20, figure 2-1) to the "OFF" position.
j.
Turn pressure relief control knob (12, figure 2-1) clockwise until tight.
k.
Close discharge valves and tank-to-pump valve control handle (13, figure 2-1).
l.
Disengage fire pump as described in paragraph 2-17.
2-49

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