30
Table 6. Lift Loss From Elevation – CONTINUED
Lift Loss In Head Ft (Head M)
6,000 (1828) 4.4 (1.34)
7,000 (2133) 5.5 (1.67)
8,000 (2438) 6.6 (2.01)
9,000 (2743) 7.7 (2.35)
10,000 (3048) 8.8 (2.68)
• Open the throttle gradually and, if equipped, watch the pressure gauge and the tachometer.
An increase in engine RPM without a corresponding increase in pressure indicates cavitation.
• Use a hard suction hose when pumping from draft and soft suction hose when pumping from
hydrant.
3.6. Post Operation Procedure
Perform the following steps at the end of all operations.
A. Return engine to idle.
B. Slowly close all valves.
C. Place transmission into neutral or park.
D. Drain pump (especially important in freezing weather):
Open discharge valves, remove suction tube caps, and discharge valve 1.
caps.
Open volute drain cocks or Hale multiple drain valve. If a multiple drain 2.
valve is used, all pump drain lines should be connected to this valve.
After pump is completely drained, replace all caps and close all valves. 3.
E. If any of the following was used, sea water, dirty water, alkaline water or foam
solution; flush pump with clean water.
F. Remove wheel chocks only when preparing to leave scene.
G. Fill out pump run log, indicating total pumping time and total out-of-station
time.
H. Report all pump, vehicle, and equipment malfunctions and irregularities to
proper authority.
I. Know and follow all local procedures.
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