Troubleshooting - Earthsafe M20 Installation, Operation And Maintenance Manual

INSTALLATION, OPERATION, AND MAINTENANCE
Troubleshooting — General
1. Pump does not start:
Check power to motor starters and controllers,
check emergency stop,
check motor overloads.
2. Overload trips:
Check relief valve settings.
Check for debris in pump head.
3. Excessive noise / vibration:
Cavitation due to inlet conditions.
4. Excessive inlet suction:
Check and clean strainer.
Check foot valve at tank.
Check suction pipe size and vertical lift.
5. Insufficient inlet suction:
Check for prime in suction piping.
Test inlet piping for leaks.
6. Fluttering Suction reading:
Check for prime in suction piping.
Test inlet piping for leaks.
Confirm inlet conditions to avoid pump cavitation.
7. Excessive Discharge pressure:
Check for closed valve or other blockage.
Check pipe relief valve settings.
Check for thermal expansion relief in discharge piping.
Model M20
Duplex Fuel Pump
EMERGENCY POWER FUEL SYSTEMS
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