Preventive Maintenance - Hayward Perflex® Extended-Cycle Owner's Manual

PRECOATING
Scoop 5 lbs. (2.3 kgs.) of 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
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 vent valve
(under bump cover), open the filter drain (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
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. Push in tab at
base of handle. Carefully pry the bump cover
from the retaining groove and slide the cover off
the handle.
Page 6 of 12
"precoat
suction
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
PERFLEX
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.
GAUGE/INSPECTION PORT ADAPTER
The gauge/inspection port adapter provides an easy way
to look into the filter, at the top area of the tube nest
assembly. It gives a quick inspection capability to check
tube nest conditions (algae, calcium or D.E. build-up, ect.)
without requiring the removal of the filter head. It also
allows you to wash off trapped debris and excess D.E.
from between the Flex-Tubes; and from under the tube
sheet, by spraying with a garden hose, or utilizing
Hayward's Jet-Action Cleaning Wand (EC2024) that
attaches to the end of a garden hose.
To remove adapter- shut off the pump and valves. Open
the air relief. Drain the water in the filter to a level below
the adapter port. Unscrew the adapter, with the pressure
gauge, counterclockwise.
To Reinstall the adapter - thread the adapter, with the
adapter o-ring in place, securely into the filter housing.

PREVENTIVE MAINTENANCE

While Perflex filters are basically resistant to the
difficulties often encountered as a result of chemical
build-up in swimming pools, it is important to keep in
mind that the mineral content in a pool increases every
day as a result of the chemicals and the normal water
evaporation process. If the concentration of minerals is
allowed to get too high, the minerals will form deposits on
the Flex-Tubes inside the filter, and will eventually result
in shortened filter cycles.
The filter elements can be cleaned by washing with a
garden hose. For best results, carefully brush the surface
to remove fine particles. Do Not Pressure wash as it can
damage the filter elements.
You may find some debris on the filter elements , which
may not be removed with hosing.
After cleaning, thoroughly flush all affected parts with
cold water.
™ Filtration Series IS50C REV C