AquaTools AT8550 Owner'S Manual Download Page 6

6

1. Short Cycle Time:

NOTICE: 

Cycle Time will vary with each installation

and between different areas of the country. The follow-
ing causes and remedies are for cycle times shorter
than normal for your area.
A. Chlorine residual too low; maintain proper 

residual (consult pool professional for 
recommendation).

B. Filter cartridge is dirty or plugged; thoroughly clean

the filter (see No. 4, “Plugged Cartridge”, and
“Cartridge Cleaning Procedure", Page 5).

C. Water is chemically out of balance; consult pool

professional.

D. Algae in the pool. Apply heavy dose of chlorine 

or algicide as recommended by the pool 
manufacturer.

E. Replace the cartridge.

2. Low Flow/High Pressure:

A. Cartridge plugged; clean filter thoroughly (see Page

5).

B. Pipe blocked downstream from filter; remove 

obstruction.

C. Piping too small; use larger pipe (consult dealer for

sizing).

3. Low Flow/Low Pressure:

A. Plugged pump or plugged hair and lint trap; clean

thoroughly.

4. Plugged Cartridge:

A. Insufficient cleaning; follow cleaning instructions

closely and clean thoroughly (see Page 5).

B. Water is chemically out of balance; consult pool

professional.

C. Excessive air in filter. Vent air from tank and check

for pump suction pipe leaks. Clean air bleed filter in
cartridge assembly with a hose and soft flow nozzle.

D. Pool water contains iron. Consult your pool 

professional.

E. Heavy or improper application of powdered chlo-

rine tablets using a binder. Consult your pool 
professional.

F. Algae in the pool. Apply heavy dose of chlorine or

algicide as recommended by the pool 
manufacturer.

G. Use of incorrect chemicals with PHMB sanitizers.

Replace filter cartridge.

H. Replace the cartridge.

5. Pool Water Not Clean:

A. Chlorine residual too low; maintain adequate chlo-

rine residual (consult pool service technician for
recommendation).

B. Filter cartridge torn, plugged, or punctured; 

replace cartridge.

C. Pool water contains iron. Consult your pool 

professional.

D. Heavy or improper application of powdered chlo-

rine tablets using a binder. Consult your pool 
professional.

E. Algae in the pool. Apply heavy dose of chlorine 

or algicide as recommended by the pool 
manufacturer.

F. Replace the cartridge.

6. Pool Cleaner Stops Working:

A. Clean filter and observe performance of cleaner.

B. If cleaner performs better after filter has been

cleaned, use a shorter cleaning cycle for the filter
(that is, clean the filter after a pressure rise of less
than 10 PSI).

TROUBLESHOOTING GUIDE

Summary of Contents for AT8550

Page 1: ...eet Delavan WI 53115 North America 800 752 0183 FAX 800 582 2217 International 262 728 5551 FAX 262 728 4461 TELEX ITT 4970245 2000 Printed in U S A AT530 10 31 01 This manual should be furnished to t...

Page 2: ...NPT Posi Ring TM Air Release Valve PressureGauge Behind Safety Latch Minimum Service Height Pressure Gauge Not Factory Installed 3648 0200 IN OUT SPECIFICATIONS FIGURE 1 Dimensions in inches mm Table...

Page 3: ...ol and operating filter A typical pool installation will require approximately one week to obtain and maintain the sparkle that your filter is capable of giving you Maximum pressure is 30 PSI 207 kPa...

Page 4: ...and all sealing surfaces Relubricate the O ring if necessary NOTICE Lubricate the O ring only with silicone grease as other lubricants may cause the ring to swell DO NOT lubricate the Posi Ring or the...

Page 5: ...move the drain cap and flush all foreign material from the inside of the tank before removing the filter cartridge 2 Allow the tank to drain 3 Lift out the cartridge and hose it down thoroughly Spray...

Page 6: ...xcessive air in filter Vent air from tank and check for pump suction pipe leaks Clean air bleed filter in cartridge assembly with a hose and soft flow nozzle D Pool water contains iron Consult your po...

Page 7: ...5 Tank lid assembly includes Key No 6 1 25200 0103S 25200 0103S 6 Tank lid O ring with silicone lube 1 25200 0011S 25200 0011S 7 Filter cartridge 1 25200 0150S 25200 0175S 8 Safety catch 1 25200 0007...

Page 8: ...t to negligence misappli cation improper installation or maintenance or other cir cumstances which are not in AquaTools direct control Full warranty coverage is in effect for one year after instal lat...

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