Corrective Action - Pentair Berkeley Manual Del Usuario

Troubleshooting • Engine Drive Pumps
SYMPTOM
Pump runs, but no water delivered
Not enough water delivered
Not enough pressure
Excessive vibration
Abnormal noise
Pump stops
Overheating
CAUSE
I. ENGINE
A. Speed too low
B. Rotating and/or
reciprocating parts drag
C. Speed too high
D. Loose or broken parts
E. Improper adjustment
F. Fuel supply
II. MECHANICAL
A. Flow through pump completely or
partially obstructed
B. Wrong direction of rotation
C. Pump not primed
D. Internal leakage
E. Loose parts
III. SYSTEM
A. Pressure required by system at design
flow rate exceeds pressure rating of pump
B. Obstruction in suction piping
C. Pressure rating of pump exceeds pressure
requirement of system at design flow rate
GROUP I
ENGINE
A B C D E
X
X X
X X
X X X
X X X
X X X
X X X X
Refer to engine manufacturer's manual.
Refer to engine manufacturer's manual.
Refer to pump and engine power curves. Adjust.
Refer to engine manufacturer's manual.
Check fuel and ignition systems. Adjust per engine manufacturer's manual.
Check fuel supply, fuel pump, filters, etc.
Locate and remove obstruction. Refer to Repair Instructions
for disassembly.
Reverse rotation of three phase motor by interchanging any two leads.
See manufacturer's Instructions for reversing single phase motor.
Re-prime. Inspect suction system for air leaks.
Check impeller for wear of controlled clearances (See Repair Instructions).
Inspect. Repair.
Compare pump pressure and flow rate against pump characteristic curve.
Check for closed or partially closed valve in discharge piping system.
Reduce system pressure requirement. Increase pressure capability of pump.
Locate and remove obstruction.
Compare pump pressure and flow rate against pump characteristic curve.
Inspect discharge piping system for breaks, leaks, open by-pass valves, etc.
If necessary, reduce flow rate by partially closing discharge valve.
PROBABLE CAUSE
GROUP II
MECHANICAL
F A B C D
X X
X X X
X X X
X X
X X X
X
X X

CORRECTIVE ACTION

GROUP III
SYSTEM
E F A B C
X X
X X
X X
X X X
X X X X
X X X
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