10
TROUBLESHOOTING
(CONT.)
Low Flow – Generally, Check For:
1. Clogged or restricted strainer or suction line; undersized pool piping.
2. Plugged or restricted discharge line of filter, valve partially closed (high gauge reading).
How to correct: Sand filters – backwash as per manufacturer’s instructions; D.E. filters – backwash
as per manufacturer's instructions; Cartridge filters – clean or replace cartridge.
3. Air leak in suction (bubbles issuing from return fittings). Re-tighten using Teflon tape.
4. Plugged or restricted impeller or impeller sheared off. Replace including new seal assembly.
Noisy Pump – Check For:
1. Air leak in suction piping causing rumbling in pump.
2. Cavitation due to restricted or undersized suction line or leak at any joint, low water level in pool,
and unrestricted discharge return lines. Correct suction condition or throttle return lines, if practical.
Holding hand over return fitting will sometimes prove this point or putting in a smaller eyeball
fitting.
3. Vibration due to improper mounting, etc. Put a rubber pad under metal mounting feet.
4. Foreign matter in pump housing. Loose stones/debris hitting impeller could be cause, remove any of
the above.
5. Motor bearings noisy from normal wear, rust, overheating, or concentration of chemicals causing
seal damage which will allow chlorinated water to seep into bearings wiping out the grease causing
bearing to whine. All seal leaks should be replaced at once.
6. Equipment base vibrating.
Maintenance
• Clean strainer basket regularly. Do NOT strike basket to clean. Inspect strainer cover gasket
regularly and replace as necessary
• Advantage pumps have self-lubricating motor bearings and shaft seals. No lubrication is
necessary
• Keep motor clean. Insure air vents are free from obstruction
• Occasionally, shaft seals must be replaced, due to wear or damage
