Cartridge Filter Maintenance

Problem Cause  Remedy
Pool water not sufficiently clean. Pool chemistry not adequate to inhibit algae growth.

Obstruction in suction line to pump.

Dirty cartridge.

Inadequate turnover rate.

Maintain pool chemistry or consult pool service technician.

Clean cartridge. Use chemical cleaning of cartridge, if necessary.

Run system for longer time or consult dealer or pool service technician.
High filter pressure Dirty cartridge.

Partially closed valve or restriction in return.
Clean cartridge. Use chemical cleaning of cartridge, if necessary.

Open valve or remove obstruction in return line.
Short cycles Dirty cartridge.

Pool chemistry not adequate to inhibit algae growth.

Flow rate too high.
Clean cartridge. Use chemical cleaning of cartridge, if necessary.

Maintain pool chemistry or consult pool service technician.

Restrict flow to capacity of filter (see filter label).
Dirt returning to pool Cartridge element not properly located on center pipe.

Cartridge element ruptured.

Air strainer on cap assembly is damaged or missing.
Check element for proper location.

Ensure that cartridge is installed properly. Check for breaks in polyester material. Replace, if necessary.

Replace air strainer.
Leakage at clamp Improperly tightened clamp.

Dirt or contamination.

Damaged or cut O-Ring.


Dirt or contamination.


Damaged or cut O-Ring.

Shut off pump, relieve tank pressure, open air bleeder. Tighten clamp properly.

Shut off pump, relieve tank pressure, open air bleeder. Remove tank top and clean O-Ring sealing surfaces. Reassemble tank properly.

Same as above except replace O-Ring.

Return flow to pool diminished; low filter pressure Obstruction in pump hair and lint strainer.


Obstruction in pump.


Obstruction in suction line to pump.
Clean basket in strainer.


Disassemble and clean pump.


Clean skimmer basket. Remove obstruction in lines. Open valves in suction line.

Get a FREE consultation!

Get A Free Consultation
We take privacy seriously. We never share your data.