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7.3 Trouble shooting
Problem
• Power Supply fault, disconnected or defective wiring.
• Fuses blown or thermal overload open.
Pump does not
• Check the rotation of the motor shaft for free movement and lack of obstruction.
start
• Because of long time lying idle. Unplug the power supply and manually rotate motor
rear shaft a few times with a screwdriver.
• Empty pump/strainer housing. Make sure the pump/strainer housing is filled with
water and the O ring of cover is clean.
• Loose connections on the suction side.
Pump does not prime
• Strainer basket or skimmer basket loaded with debris.
• Suction side clogged.
• Distance between pump inlet and water level is higher than 2m, the installa- tion
height of pump should be lowered.
• Pump does not prime.
• Air entering suction piping.
Low Water Flow
• Basket full of debris.
• Inadequate water level in pool.
• Air leak in suction piping, cavitation caused by restricted or undersized suction line
or leak at any joint, low water level in pool, and unrestricted dis- charge return lines.
Pump being noisy
• Vibration caused by improper installation, etc.
• Damaged motor bearing or impeller (need to contact the supplier for repair).
Possible causes and solution
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