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10 Cards in this Set

  • Front
  • Back
Pump does not prime or losses prime- "SUCTION GAUGE INDICATING LOW VACUUM"
A- Air leaks
N- No priming fluid in reservoir
D- Defective priming valve

E- Engine speed is too low
P- Priming pump not operated long enough
I- Improper clearance in priming pump
Pump does not prime or losses prime- "SUCTION GAUGE INDICATING HIGH VACUUM"
S- Suction lift is to high
H- High point in the suction hose
E- End of the suction hose is not deep enough
D- Debris on strainer or clogged strainer
Pump does not prime or losses prime - "SUCTION GAUGE SHOWS GRADUALLY DECREASING VACUUM"
H- Height of the lift is decreasing (Rising tide from tidal waters)
A- Air is being drawn into the strainer
P- Partial blockage is disappearing
Pump does not prime or losses prime - "SUCTION GAUGE SHOWS GRADUALLY INCREASING VACUUM"
H- Height of the lift is increasing
P- Partial blockage of the strainer
Insufficient Pump Capacity - "ENGINE AND PUMP SPEED TOO LOW"
L- Low engine horsepower
A- Altitude
G- Governor improperly set
R- Relief valve set improperly
T- Transfer valve in the wrong position
T- Transmission in the wrong gear
Insufficient Pump Capacity - "ENGINE AND PUMP SPEED HIGHER THAN NORMAL"
W- Warm water
A- Aerated water
R- Reduced hydrant capacity limitations
F- Foreign matter in the pump

H- High altitude
A- Air leaks
S- Suction hose is too small

L- Lift is too high
E- Engine problems or damage
T- Transmission in the wrong gear

W- Worn clearance rings
I- Improper type of strainer
C- Clogged strainer

R- Reduced suction problems (mostly mentioned above)
C- Collapsed suction hose
INSUFFICIENT PUMP PRESSURE
P- Pump capacity limit pressure
P- Pump speed is too low
T- Transfer valve is in the volume mode rather than pressure
R- Relief valve set improperly
RELIEF VALVE WILL NOT OPERATE
C- Clogged strainer
D- Debris in the pilot valve
L- Long periods of non use
If you are pumping at draft and 30 minutes into the operation you begin to lose your prime. All obvious signs of losing your prime have been checked and found adequate. What could be the cause of the problem?
The tank to pump valve could have a small leak in it even though you thought you fully closed the valve. Your indicator light could tip you off but do not always rely on your lights. They may not work. Periodically, get up top and visually check the tank.
If you have a problem start from the intake side and work to the discharge side.
1. Check the suction gauge
2. Check the gate valve
3. Check drains
4. Step on the suction hose. If it is soft problem is most likely the water supply
5. Check for broken or leaking hose line
6. Check the hydrant.
7. If all the above are good, then most likely the cause is an engine problem
8. Check discharge valves and lines
9. Check engine gauges
10. Listen for engine problems
11. Notify the I.C. and firefighters on hose lines early