Pump Selection; Plumbing & Installation; Filter Location - Hayward Perflex® Extended-Cycle Owner's Manual

The Hayward-Perflex 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. It may be used on fresh or salt water swimming pools.
The Perflex 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 it can no longer efficiently
remove dirt from the water. Through the 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. The EC-50AC is equipped with a special, polished stainless steel clamp,
designed for easy access to the internals of 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 may be mounted on 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 ECX1055) is furnished with each unit for use
with pumps rated between 40 and 65 GPM (150-246
LPM). Install the flow controller in the filter body as
illustrated with an elbow adapter, union connector, or
adapter. The adapter both secures the controller in its
proper position, and completes the hydraulic balance
of the system.

FILTER LOCATION

1. Though the filter is designed for outdoor use, it is
advisable to protect electrical components from the
weather. Select a well-drained area, one that will not
flood when it rains. Locate the filter as close to the pool
as practical, keeping the number of fittings to a
minimum.
2. Set the filter on a level mounting platform or base. Keep
the filter bump handle, drain outlet, and pressure gauge
accessible for convenient operation.
3. Position the system so that the filter tank can drain by
gravity.
Page 4 of 12
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
PERFLEX
PLUMBING & INSTALLATION
1. To facilitate servicing of the filter system and to allow
for indoor storage during the winter months, installing
union connections at the suction and outlet ports is
recommended.
2. Use 1-1/4" or 1-1/2" I.D. flexible plastic pipe, or hose,
joined with insert fittings and stainless steel clamps.
3. All plumbing connections on the system are 1-1/2"
N.P.T. When making connections, use plastic male-end
adapters. Apply three turns of Teflon tape or plastic
pipe sealant compatible with ABS to the male threads.
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 damage
to components.
4. Refer to the diagrams for suggested valving. Ball-type
valves are recommended where needed.
™ Filtration Series IS50C REV C