Filter Backwash Procedure - Pentair STA-RITE SAND DOLLAR Installation And User Manual

8

Filter Backwash Procedure

obscure objects in the water which while swimming and diving could cause serious injury or
death. Never swim in a pool with poor water clarity.
1. Stop pump.
2. Ensure that the suction and backwash lines are open so that water
is free to come from the pool and flow out the backwash line. Set
control valve to "Backwash" position.
3. STAND CLEAR OF FILTER and start pump.
4. Backwash filter for approximately three (3) minutes or until
backwash water is clean.
5. Stop pump and set valve to "Rinse" position.
6. STAND CLEAR OF FILTER and start pump..
7. Rinse filter for approximately 30 seconds.
8. Stop pump and set valve to "Filter" position.
9. Ensure the pool return line is open so that water may flow freely
from the filter back to the pool.
10. Open manual air bleeder on filter. STAND CLEAR OF FILTER and
start pump.
11. Close manual air bleeder on filter when a steady stream of water
emerges from the bleeder.
12. The filter has now started its filtering cycle. Verify the water is
returning to the pool and take note of the filter pressure.
13. The filter pressure in Step 12 above should not exceed the
pressure originally observed on the filter when it was initially
started. If after backwashing, the pressure is 4 to 6 psi above the
start condition it will be necessary to chemically clean the sand
bed.
SAND DOLLAR and CRISTAL-FLO™ II Top Mount Sand Filter Installation and User's Guide
®
Failure to operate your filter system or inadequate filtration can cause
poor water clarity obstructing visibility in your pool. Poor water clarity may
To prevent equipment damage and possible injury, always turn
pump off before changing valve position.