SPF DESIGN CHARACTERISTICS:

Swimming Pool Filter System (SPF Series) Design Characteristics ­ Diamond SPF Series pool filters are designed around the principal use of vertical filter vessels, high quality sand filter media, and three cycles of operation. Our use of vertical filter vessels offers easy installation and superior flow characteristics when compared to horizontal filter vessels. Our media selection ensures consistency and high quality filtered water. The three cycles of operation ensures no contamination in the pool. Diamond SPF Series filter systems can be designed for manual or automatic operation.

MULTI-VESSEL VERSUS SINGLE VESSEL CONCEPT:

Diamond Water Systems designs multi-vessel systems. Our multi-vessel design allows for redundancies not offered by single vessel systems. More importantly, Diamond’s multi-vessel design promotes greater control over the filter operation. Our common manifold system allows for the efficient backwashing and rinsing of individual filter vessels. This backwash efficiency is the key to long-term filter life. Additionally, smaller vessels use less backwash water, as the volume is more concentrated and controlled. This takes into consideration waste discharge problems.

INSTALLATION "WHERE SIZE DOES MATTER":

One of the most important advantages with using multi-vessel systems is the use of smaller vessels that facilitate installation in close quarters. This modular concept avoids confined-space entry restrictions. Smaller vessels mean easier access through existing doorways.

FILTER MEDIA:

Diamond Water Systems uses only high quality natural, refined quartz silica sand and gravel. The characteristics of this media enable SPF Series pool filters to remove particles down to 5.0 microns. The filtration media is NSF listed and certified to ANSI/NSF Standard 61.

MANUAL OR AUTOMATIC OPERATION:

Whether the filter system is manually or automatically operated, it should be inspected on a weekly basis. This should coincide with the operator check and balance of the chemical feed system requirements. Because the backwash/rinse cycles do not require much time, the procedures may be accomplished while the operator balances the chemicals.

CYCLES OF OPERATION:

FILTER CYCLE:

From the common inlet manifold, the flow of water in the filter cycle is down through the filter media in each filter vessel. Filtered water exits through a common manifold at the discharge of the filters. Contaminants are collected on the surface of the filter media.

BACKWASH CYCLE:

In the backwash cycle, the flow of pool water is diverted to a backwash feed line, connected to the bottom of each filter vessel. Flow during backwash is counter-current, entering the bottom of the backwashing vessel and flowing up through the filter media. The backwash flow rate is regulated at a specific rate so no media is lost. Contaminants collected during filter cycle are discharged through the backwash waste outlet pipeline. For maximum backwash efficiency, only one filter vessel will backwash at a time, for 5 minutes.

RINSE CYCLE:

The rinse cycle immediately follows the backwash cycle. In the rinse cycle, pool water flows down through the filter media. The rinse cycle re-stratifies the filter media after a backwash and flushes additional contaminants not backwashed from the filter to waste. This ensures that contaminants left in the piping are flushed before the system returns to filter cycle. All filter vessels are rinsed at the same time, for one minute.