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Atlantic MD550 - Troubleshooting Guide; Pump Does Not Run; Pump Stops After Starting; Diminished Flow Rate or No Water Flow

Atlantic MD550
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Problem Possible Cause Possible Solution
Pump does
not run
Power is o Turn power on
Power failure
Check power supply or
contact local power company
Power cord is not
connected
Connect power cord
Impeller is stuck Remove debris/clean impeller
Pump stops after
starting
Pump is
overheating
Submerge pump/Raise water level/
Allow pump to cool/Clean impeller
Power/Current
overload
Check length/size of power cable. Check
or replace GFI
Intake is blocked/
Impeller needs cleaned
Remove debris from the pump
intake. Refer to page 4 for
cleaning instructions.
Diminished
flow rate or
no water flow
Impeller needs cleaning Refer to page 4 for cleaning instructions
Obstruction in pump
or piping
Clear obstruction
Low water level Stop operation/Raise water level
Air-lock in the
impeller chamber
Place pump in water. Turn the pump ON/
OFF intermittently 2 or 3 times.
Troubleshooting Guide
Always turn o power before inspecting the pump. Failure to observe this precaution can
result in a serious accident.
Before ordering repairs, carefully read through this instruction booklet. If the problem persists,
contact your dealer.
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