Hayward 18 In Sand Filter W/Top Mt Vlv Expert Line ProSeries-High-Rate-Sand-Fi - Page 7

Head Loss Curves, Problem

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HEAD LOSS CURVES PROBLEM REMEDY LOW WATER FLOW 1. Check skimmer and pump 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. SHORT FILTER CYCLES POOL WATER WON'T CLEAR UP 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). 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. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS 7 7

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USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
7
HEAD LOSS CURVES
PROBLEM
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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.