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
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.
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 out
let.
Instructions for changing the handle position are covered
later.
Position the filter so the tank can drain by gravity.
PLUMBING
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.
Ball-style control valves are recommended.
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.
IS50A-98
1.
2.
3.
1.
2.
3.
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.
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.
