HAYWARD S310T User Manual

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 pool 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, 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 pump and pump mounting base, No.
S160TPAK1 or S160TPAK3 (if supplied) to the filter
according to instructions packed with the base.

IS310T-99

1.

2.

(117 cm)

(122 cm)

(62 cm)

MODEL S310T

SPECIFICATIONS

MODEL

NUMBER

S310T

EFFECTIVE

FILTRATION AREA

FT

2 M2

4.9 0.46

DESIGN

FLOW RATE*

GPM LPM

98 371

PRESSURE LOSS AT
DESIGN FLOW RATE*

PSI BAR

4.7 0.33

MAXIMUM WORKING

PRESSURE

PSI BAR

50 3.45

REQUIRED CLEARANCE

SIDE ABOVE

INCH MM INCH MM

18 457 18 457

MEDIA REQUIRED

TYPE AMOUNT

FILTER SAND** LBS KGS

0.45-0.55 500 227

*Based on 20 GPM/ft.2or 814 LPM/m2(maximum allowable NSF rating).

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

PARTS

Model S310T

REF.

NO.

1a

1b

2

3

4

5

8

9

10

11

SP071113

SP071620

ECX27081

GMX600F

SX310N

SX202S

SX310HA

SX180G

SX180H

SX310J

PART NO.

DESCRIPTION

Vari-Flo Control Valve - 1-1/2”

Vari-Flo Control Valve - 2”

Pressure Gauge

Valve/Tank O-Ring

Flange Clamp (Valve - Tank)

Sand Shield

Filter Tank with Skirt,
Drain and Lateral Ass’y.

Lateral Assembly with
Center Pipe

Lateral

Gasket

Drain Cap

Filter Support Stand (Skirt)

6

7

SX310DA

SX310AA1

NO.

REQ’D.

1

1

1

1

1

1

10

1

1

1

1

1