Pentair BERKELEY B85580 Manuel Du Propriétaire page 15

Typical Swimming Pool Pump Suction Connection
Main Drain
• There must be at least two hydraulically balanced
main drains for each pump suction line. The main
drains must be at least three feet apart, center to
center.
• The pump suction system must provide protection
against the hazard of suction entrapment or hair
entrapment/entanglement. All main drain covers
must be maintained. They must be replaced if
cracked, broken, or missing.
• If 100% of the pump's flow comes from the main
drain system, the maximum water velocity in the
pump suction hydraulic system must be six feet per
second or less even if one main drain is completely
blocked.
BE839
Installation
Typical Swimming Pool
Flow Through Skimmer
Flow To
Pump Suction
Not
to
Scale
Pool Floor
T h
r e e
B e
F e
t w
e t
e e
( 3 '
n M
) M
a i n
i n i
D r
a i n
Pool Deck
Skimmer
Pool Side
Equalizer Fitting
Isolation
Valve
No shutoff valve
between Tee and
All main drains must have
Main Drains
correctly installed, screw-fastened
covers in place.
Main Drain
m u
m
C e
n t e
r s
• The system must not be able to operate with the
pump drawing water from only one main drain (that
is, there must be at least two main drains connected
to the pump whenever it is running). However, if two
main drains run into a single suction line, the single
suction line may be equipped with a valve which will
shut off both main drains from the pump.
5791 0208
Page 15