Table des Matières
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RUNNING THE ENGINE
Refer to engine operation part of this manual for starting and
operating instructions.
Pump performance varies depending on engine R.P.M.
Refer to engine operation to adjust engine speed.
Depth
to Water
15 PSI
0 ft.
141
5 ft.
130
10 ft.
121
15 ft.
113
20 ft.
105
25 ft.
80
SYMPTOM
No water delivered
Not enough water delivered
Not enough pressure
Engine heats excessively
Abnormal noise and/or vibration
Pump works for a while, then stops
CAUSE
1. ENGINE
A. Speed too low
B. Rotating and/or reciprocating parts drag
C. Speed too high
D. Loose or broken parts
2. PUMP
E. Not primed
F. Pump takes too long to prime
G. Flow through pump completely
or partially blocked
H. Internal leakage
I. Rotating parts drag
J. Loose or broken parts
3. SYSTEM
K. Pressure required by system at design
flow rate exceeds pressure rating of pump
L. Obstruction in suction piping
M. Suction lift too high
N. Discharge head too low
O. Suction inlet not immersed deep enough
P. Leaky suction line or connection admitting air
Performance Chart
Gallons per Minute at Discharge Pressure
25 PSI
35 PSI
120
110
100
90
80
60
Troubleshooting Guide
ENGINE
A
B
C
D
E
X
X
X
X
X
X
X
X
Refer to engine section
Refer to engine section
Maximum engine speed not to exceed engine manufacturer's recommendation.
Refer to engine section
Reprime, inspect suction system for air leaks, and or clack assembly.
Check for air leaks or defective check valve.
Locate and remove obstruction. Attach strainer.
Check clearances between face of vanes and case. Should not exceed 1/32".
Inspect. Repair.
Inspect. Repair.
Compare pump pressure and flow rate against pump performance chart.
Reduce system pressure requirement. Increase pressure capability of pump.
Locate and remove obstruction. Attach strainer.
Check with gauge or measure vertical distance between water surface and
center line of pump, allowing for friction loss in suction pipe. Reduce rate of
flow to obtain desired lift. Refer to pump performance chart.
Decrease rate of flow
Refer to "Installation"
Repair or replace suction line. Tighten connections.
MAINTENANCE
PUMP LUBRICATION
Pump liquid end does not require any grease or oil for lubri-
cation. The mechanical seal is lubricated by water when the
pump is operating.
45 PSI
95
65
85
55
75
45
65
30
55
7
40
2
PROBABLE CAUSE
PUMP
F
G
H
I
J
X
X
X
X
X
X
X
X
X
X
X
X
X
CORRECTIVE ACTION
3
Maximum
50 PSI
PSI
50
58
40
55
25
52
2
50
–
48
–
45
SYSTEM
K
L
M
N
O
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
P
X
X
X
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