Hayward Internal Diffuser Elbow Pipe ( Top ) | SX200C

Installation of the Sand WARNING
After testing has been finished and the system is 100% operational, add the filtration sand
required. Use #20 silica sand (.45 - .55 mm). Open the vent valve, remove the manway cover
and seal from the filter. See section 4.4 (page 11). Ensure the filter is full of water up to the
inlet port. The proper amount of sand is listed in Fig. 3-1, page 8. If a diffuser head is directly
underneath the manway opening, cover it with plastic and tape to prevent sand from entering
the plumbing.

Notice - Remove any plastic and tape from the diffuser after the sand is poured in the filter
and before starting the system.

Now, replace the manway cover and seal into the filter tank. See section 4.5 (page 11). Be
sure that the manway cover is free of debris. If the manway cover is not free of sand, the seal
will not seat properly and could cause the filter to leak at the manway cover. Use the vent valve
to remove air from the filter. Put the filter valves into the backwash mode, turn the pump ON,
(see next section) and run for about 3 to 5 minutes. This will level the sand inside the filter.
Turn pump OFF, put the valves into filter position and the system is ready for operation.