Pentair TRITON TR40 Installation And User Manual page 12

8
Filter Backwash Procedure
To prevent equipment damage and possible injury, always turn off pump before changing valve positions.
1. Stop the 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 position as follows:
a. If using a Multiport Valve, set valve to backwash position.
b. If using a Two Position Slide Valve, push handle down to backwash position and engage lock
by twisting handle.
3. Stand clear of the filter and start pump.
4. Backwash filter for approximately 3 to 5 minutes or until backwash water is clean.
5. Stop the pump.
a. If using a Multiport Valve, set valve to rinse position and continue with remaining steps.
b. If using a Two Position Slide Valve, skip to step 8.
6. Stand clear of the filter and start pump.
7. Rinse filter for approximately 30 seconds.
8. Stop the pump and set valve as follows:
a. If using a Multiport Valve, set valve to filter position.
b. If using a Two Position Slide Valve, raise handle to filter position and engage valve lock by
twisting handle.
9. Ensure that pool return line is open so that water may freely flow from the pool back to the pool.
10. Open manual air bleeder on Triton closure. Stand clear of filter and start pump.
11. Close manual air bleeder of the closure when all the air is removed and a steady stream of water
emerges from the bleeder.
12. The filter has now started its filtering cycle. You should ensure that water is returning to the pool
and take note of the filter pressure.
13. The filter pressure, in the above Step 12, 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.
TRITON Fiberglass Sand Filter Installation and User's Guide
®