SAND DOLLAR
®
and CRISTAL-FLO™ II
Top Mount Sand Filter Installation and User’s Guide
12
Return flow to
pool diminished,
low filter
pressure.
1. Obstruction in the pump hair and lint
pot.
2. Obstruction in pump.
3. 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.
Sand returning
to pool.
1. Broken underdrain lateral.
2. Backwash rate too high.
Replace broken or damaged laterals.
Reduce backwash flow rate.
Troubleshooting (Cont.)
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