ELECTRICAL PRECAUTIONS
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then unplug the pump. Make sure you are not standing in water and
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disconnecting electrical service prior to pump removal
shut off power to pump
5
POSSIBLE CAUSES/SOLUTIONS
• Impeller is obstructed with debris and locked-up. Remove and clean
impeller.
• Low Voltage condition. Check voltage from mains power or 12V battery
depending on pump model.
• If all of the above are OK, then the motor could be malfunctioning.
• Impeller or volute openings are fully or partially clogged.
Remove hoses and clean inlet and discharge. Be sure entire hoses are
clear. Remove impeller and clean between vanes and behind impeller.
• Suction hose is collapsing under vacuum. Use hose with stiff walls.
• Pump is failing to prime. Ensure there are no leaks in suction hose
connection or in the hose itself. Even a pin-hole leak will allow air to
enter the system and prevent priming.
• Vertical pumping distance is too high. Reduce discharge height
• Vertical pumping distance is too high. Reduce distance.
• Impeller or volute openings are fully or partially clogged.
Remove pump and clean.
• Suction strainer is clogged. Clean the strainer inlet openings.
• Pump impeller is partially clogged causing motor to run slow and
overload. Remove pump and clean.
• Motor stator may be defective.
• Battery may be depleted. Recharge or replace battery as necessary.
PROBLEMS
PUMP DOES NOT RUN
AND MAKES HUMMING
SOUND
PUMP RUNS BUT DOES
NOT DELIVER WATER
PUMP RUNS BUT ONLY
DELIVERS A SMALL
AMOUNT OF WATER
FUSE BLOWS OR
CIRCUIT BREAKER
TRIPS WHEN
PUMP STARTS
MOTOR RUNS FOR A
SHORT TIME, THEN
STOPS
TROUBLE SHOOTING CHECKLIST