7
HEAD LOSS CURVES
PROBLEM
LOW WATER FLOW SHORT FILTER CYCLES
POOL WATER WON'T CLEAR UP
REMEDY
1. Check skimmer and pump
1. Check for algae in pool and 1. Check chlorine, pH and total
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.
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).
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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