IS50A-98
MODEL EC50 SERIES
The Perflex Model EC50 is a high performance swimming pool filter with a filtration rating of 3,000 gallons (11 KL) per hour. Manufactured from durable, corrosion-proof materials, it is designed for continuous operation, for installation above or below the pool water line, and for fresh or salt water swimming pools. The EC50 filter uses diatomite filter powder (commonly called D.E.). D.E. is the most efficient dirt remover known. It is normally fed into the system through the skimmer when the filter is initially started; then drained from the filter when its dirt holding capacity has been reached. Through Perflex’s exclusive “BUMP” action, the D.E. is periodically regenerated and the filter cycle extended without changing the powder. When the filter powder is totally used, the “BUMP” action makes it possible to drain the used diatomite without backwashing or dismantling the filter.
PUMP SELECTION
To power your Perflex filter, select a continuous duty pump designed for swimming pool service. The filter may be used with a variety of Hayward bases and plumbing connections, or with other suitable surfaces.
It is important to determine whether the pump will be located above or below the normal pool water line. If the pump is going above the water line, a self-priming centrifugal pump must be used. Self-priming pumps can lift water from a lower level and prime automatically. There is another type of pump simply called the centrifugal. Unlike self-priming centrifugals which can lift water from a lower level, a centrifugal must be located below the water line for dependable priming.
Select a pump with an output rating of between 30 and 65 GPM (114-246 LPM). Since 50 GPM (189 LPM) is the desired maximum filter flow, a flow controller (part number EC1055) is furnished with each unit for use with pumps rated between 40 and 65 GPM (151-246 LPM). Install the flow controller in the filter body as illustrated
with an elbow adapter (part number SP1105Z4) or similar adapter. The adapter secures the controller in its proper position.
FILTER LOCATION
1.Since plumbing fittings offer a resistance to water flow, locate the filter as close to the swimming pool as
practical. Keep the number of fittings to a minimum. Select a well-drained area, one that will not flood when it rains.
2.Set the filter on a level platform or base. Keep the filter “BUMP” handle, drain outlet, and pressure gauge accessible for convenient operation. There is an alternate “BUMP” handle location on the other side of the filter outlet. Instructions for changing the handle position are covered later.
3.Position the filter so the tank can drain by gravity.
PLUMBING
1.Use 1-1/2” flexible plastic pipe, or hose, joined with insert fittings and stainless steel clamps. If rigid pipe is used, be sure to provide unions for easy servicing.
2.Ball-style control valves are recommended.
3.All plumbing connections on the EC50 filter are 1-1/2” N.P.T. When making connections to the filter, use plastic male-end adapters. Apply three turns of Teflon tape or plastic pipe sealant to the male threads.
NOTE: ANSI/NSPI-4 Article V, standard for above-ground and on-ground pools, advises that components such as the filtration system, pumps and heater be positioned so as to prevent their being used as a means of access to the pool by young children.
Screw the fitting into the thread hand tight; then, using a wrench, tighten one more full turn. Additional tightening is unnecessary and could result in broken or damaged fittings.
4.Refer to the diagrams for suggested valving.
5.Connect the pool suction plumbing between the skimmer, pool outlet, etc., and the pump.
6.Connect pool return plumbing.
7.If pressure gauge is not installed, apply Teflon tape to the gauge threads, and carefully screw the gauge into the threaded hole in the 1-1/2” access plug/gauge adapter.
8.A drain plug is furnished with each filter and is all that is needed for complete filter draining. If desired however, drain piping may be extended from the filter by using the optional Ball Drain Valve and an appropriate length of 1-1/2” pipe. Piping must slope away from the filter so the tank can drain by gravity. DO NOT use roll-flat type hose for drain piping.
9.Check for joint leaks before operating the system.
BEFORE STARTING THE FILTER
1.Obtain a supply of operating chemicals, diatomite, and a pool test kit. Use only the swimming pool grades of diatomite, such as:
CELATOM . . . . . . . . . . . Eagle-Picher Industries, Inc.
AQUA-CEL . . . . . . . . . . Johns-Manville Products Corporation
DICALITE 4200 . . . . . . . Grefco, Inc.
WITCO . . . . . . . . . . . . . Witco Corporation
The EC-50 filter uses a 5 lb. (2.3 kgs.) charge of diatomite, roughly 7 leveled coffee cans full, or 5 leveled scoops using Hayward’s EC-10SC.
2.Superchlorinate the pool water by adding unstabilized granular or liquid chlorine. Stabilized forms of chlorine are recommended for normal daily use after the initial clean up of the water. Follow chemical manufacturer’s recommendations for superchlorination and daily use.
STARTING THE FILTER
Close the filter drain and the vent valve. All suction and discharge valves must be open when starting the pump. Failure to do so could cause severe personal injury and/or property damage.
Prime and start the pump following the manufacturer’s instructions. Air trapped in the system will automatically vent to the pool. When there is a steady flow of water returning to the pool, the filter is ready for precoating. DO NOT operate the filter for more than one minute without the precoat charge.
PRECOATING
Scoop diatomite into the system through the skimmer as fast as the plumbing will take it. Note and record the pressure gauge reading after the diatomite has been added. This is the
“precoat pressure.”
FILTERING
Filtration starts as soon as the filter has been precoated. As the filter removes dirt from the pool water, the accumulated dirt causes a resistance to flow. As a result, the gauge pressure will rise and the flow will decrease. When the pressure rises 7-10 psi (.49-.70 Bar) above the precoat pressure, regenerate the filter.
REGENERATION (Extending the Cycle)
Stop the pump. Move the bump handle down slowly, then up briskly. Repeat 3 times. Restart the pump and filtration will resume at near the original flow and pressure.
After each regeneration, and until the filter is cleaned, there may be a slight increase in the starting pressure. This is the result of dirt accumulating within the filter and is completely normal.
CLEANING
Cleaning is recommended when the gauge pressure rises more than 10 psi (.70 Bar) in less than a 24 hour period or when cloudy water returns to the pool for more than 30 seconds after regeneration. To clean, first stop the pump; then move the bump handle down slowly, then up briskly. Repeat 8 times. Open the filter drain and open the vent valve (Note: if the filter is installed below the pool water line, close the suction and return valves) and allow water and dirt to empty completely.
After the filter has drained, and with the drain still open, run the pump for a few seconds to flush out any dirt remaining in the bottom of the filter. (Note: If the filter is installed below the pool water line, opening the suction valve for a few seconds with the pump off will adequately flush the unit.)
Close the filter drain and the vent valve. Open the suction and return valves (when used). Start the pump and let the filter fill with water and repeat the CLEANING procedure. This completes the cleaning phase. The filter is now ready for recharging. Proceed as in STARTING THE FILTER and PRECOATING.
VACUUMING
Vacuuming can be performed directly into the filter whenever needed. For fastest results, regenerate the filter before and after each vacuuming operation.
TO CHANGE BUMP HANDLE POSITION
1.Remove the bump handle grip. Carefully pry the bump cover from the head retaining groove and slide the cover off the handle.
2.Using a drift (or 10 penny nail), tap the pivot pin out of the filter head anchor point, freeing the end of the handle.
3.Rotate the bump handle to the alternate position and align the handle and the head anchor holes. Tap the pivot pin in place.
4.Reinstall the bump cover and grip.
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