HAYWARD Pro Plus User Manual

IS311SX-00A

Your Hayward Pro Series high-rate sand filter is a high
performance, totally corrosion-proof filter that blends superior
flow characteristics and features with ease of operation. It
represents the very latest in high-rate sand filter technology.
It is virtually foolproof in design and operation and when
installed, operated and maintained according to instructions,
your filter will produce clear, sparkling water with only the
least attention and care.

HOW IT WORKS

Your filter uses special filter sand to remove dirt particles
from the water. Filter sand is loaded into the filter tank and
functions as the permanent dirt removing media. The pool
water, which contains suspended dirt particles, is pumped
through your piping system and is automatically directed by
the patented filter control valve to the top of the filter tank.
As the pool water is pumped through the filter sand, dirt
particles are trapped by the sand bed, and filtered out. The
cleaned pool water is returned from the bottom of the filter
tank, through the control valve and back to the pool through
the piping system. This entire sequence is continuous and
automatic and provides for total recirculation of pool water
through your filter and piping system.

After a period of time, the accumulated dirt in the filter causes
a resistance to flow, and the flow diminishes. This means it
is time to clean (backwash) your filter. With the control valve
in the backwash position, the water flow is automatically
reversed through the filter so that it is directed to the bottom
of the tank, up through the sand, flushing the previously
trapped dirt and debris out the waste line. Once the filter is
backwashed (cleaned) of dirt, the control valve is manually
resequenced to Rinse (Vari-Flo Control Valve only), and
then Filter, to resume normal filtering.

INSTALLATION

Only simple tools (screwdriver and wrenches), plus pipe
sealant for plastic adapters, are required to install and/or
service the filter.

The filter system should be installed, not more than 6
feet above pool water level, on a level concrete slab,
very firm ground, or equivalent, as recommended by
your pool dealer. Position the filter so that the piping
connections, control valve and winter drain are
convenient and accessible for operation, service and
winterizing.

Assemble filter control valve to filter. Align the two (2)
valve pipe connections, with O-rings in place, with the
two openings in the side of the filter tank and press in
firmly . Secure the assembly to the tank connections with
the two bulkhead locknuts.

Do not overtighten.

1.

2.

38-1/2” (S311SX)

(95 cm)

31” (79 cm) S311SX
36” (91 cm) S360SX

NOTE: If rigid return piping is used, installation of a piping union is

recommended for ease of future servicing.

Models S311SX, S311SXV, S360SX

PARTS

Models S311SX, S311SXV, S360SX

REF.
NO.

1
2
3
4

5
6a
6b
6c
6d
7a
7b

8

9

10a
10b

11a

11b
12a
12b

13
14a
14b
15a
15b

16

17

18

19
20a
20b

21
22a
22b

22c
23a
23b

24
25

26
27

---­28

NO.

REQ’D.

1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
2
2

10

1
1
1
1
1
1
1
1
2
4
2
2
2
2
1
1

2
1

1
1
1
1

PART

NO.

SX200G
SX200Z5
SX244KN
GMX600F
SX310N
SX311AA2
SX311AA2FW
SX360AA2
SX360AA2FW
SX311G
SX360G
SX311Z1
SX244G
SX311CD1
SX311CD1FW
SX311CD2
SX311CD2FW
SX360CD
SX360CDFW
SX310HA
SX311DA
SX242MA3
CX1100Z4
SX360Z2
SX200Z2
SX180G
SX180H
SX310J
SX220Z3
SX360Z1
SX360E
DEX360F
SX244P
SX311F
SP0710X62
SP0715X62

SX200Z4
ECX270861

ECX270861
DEX2400S
DEX2400Z3A
SX200Z5

DESCRIPTION

Manual Air Relief Cap
O-Ring, 3/16” O.D.
Top Closure Dome, Noryl

®

Valve/Tank O-Ring
Flange Clamp (Valve/Tank)
Filter Tank (S311 - 1995 and Prior)
Filter Tank (S311 - After 1996)
Filter Tank (S360 - 1999 and Prior)
Filter Tank (S360 - After 1999)
Label Plate with Label (S311)
Label Plate with Label (S360)
Label Plate Screws
Top Diffuser Assembly
Top Elbow Assembly (S311 - 1995 and Prior)
Top Elbow Assembly (S311 - After 1996))
Bottom Elbow Assembly (S311 - 1995 and Prior)
Bottom Elbow Assembly (S311 - After 1996)
Elbow Assembly, Top & Bottom (S360 - 1999 and Prior)
Elbow Assembly, Top & Bottom (S360 - After 1999)
Lateral
Folding Umbrella Lateral Holder Assembly (S311 - 1997 - ) ***
Folding Umbrella Lateral Holder Assembly (S360) - ***
Plastic Air Tube (S311)
Air Tube (S360)
Air Tube Lock Screw
Gasket
Drain Cap
Filter Support Stand
O-Ring (S311 - 1995 and Prior)
O-Ring (S311, S360 - After 1995)
O-Ring Spacer (S311, S360 - After 1995)
Bulkhead Fitting (S311 - 1995 and Prior)
Bulkhead Fitting (S311 - After 1996, S360 - After 1999)
Bulkhead Fitting (S360 - 1999 and Prior)
Vari-Flo Valve Assembly —1-1/2” FIP(Optional)
Vari-Flo Valve Assembly —2” FIP(Optional)
Slide Valve Assembly —2” SKT (Included for S311SXV,

Optional for S311SX & S360SX)

O-Ring
Pressure Gauge

Pressure Gauge
Relief Valve/Gauge Adapter Assembly
O-Ring for Relief Valve Stem (Set of 3)
Relief Valve Assembly O-Ring

Optional (Supplied with Model S311SXV Slide Valve Unit Only)

*Based on 20 GPM/ft2 (maximum allowable NSF rating).

**Also known as No. 20 or No. 1/2 Silica Sand.

SPECIFICATIONS

MODEL

NUMBER

S311SX/SXV

S360SX

EFFECTIVE

FILTRATION AREA

FT

2

M

2

4.95 0.46

6.68 0.62

DESIGN

FLOW RATE*

GPM LPM

99 375

133 503

PRESSURE LOSS AT
DESIGN FLOW RATE

PSI BAR

4.8 0.34

8.6 0.6

MAXIMUM WORKING

PRESSURE

PSI BAR

50 3.45
50 3.45

REQUIRED CLEARANCE

SIDE ABOVE

INCH MM INCH MM

18 457 18 457
18 457 18 457

MEDIA REQUIRED

TYPE AMOUNT

FILTER SAND** LBS KGS

0.45-0.55 350 159

0.45-0.55 700 318

*** See Diagram A

DIAGRAM A

23c SP0410X602S

1