Hayward S166T Owner's Manual page 7

PROBLEM
LOW WATER FLOW
1. Check skimmer and pump
REMEDY
strainer baskets for debris.
2. Check for restrictions in intake and
discharge lines.
3. Check for air leak in intake line
(indicated by bubbles
returning to pool).
4. Backwash filter.
HEAD LOSS CURVES
SHORT FILTER CYCLES
1. Check for algae in pool and
superchlorinate as required.
2. Be sure chlorine and pH levels are in
proper range (adjust as required).
3. Check surface of filter sand for crusting
or caking (remove 1" of sand if
necessary).
POOL WATER WON'T CLEAR UP
1. Check chlorine, pH and total
alkalinity levels and adjust as required.
2. Be sure flow rate through filter is
sufficient.
3. Operate filter for longer periods.
4. Be sure Vari-Flo valve is set in the
"Filter" position.
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