How It Works; Installation; Initial Start-Up Of Filter - Hayward S166T Owner's 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 minimal
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 dirt removing media. The pool water, which contains
suspended dirt particles, is pumped through your piping system
and is automatically directed by the 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 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.
1. The filter system should be installed, not more than 6 feet
above pool water level, on
ground, or equivalent, as recommended by your pool
dealer. Position the filter so that the piping connections,
control valve and winter drain is accessible for operation,
service and winterizing.
2. Assemble pump mounting base, (if supplied) to the filter
according to instructions packed with the base.
3. Loading sand media. Filter sand media is loaded through
the top opening of the filter.
a. Loosen flange clamp and remove Filter Control Valve (if
previously installed). Cap internal pipe with sand shield
to prevent sand from entering it. Be sure pipe is securely
in place in bottom underdrain hub.
b. We recommend filling tank approximately 1/2 way with
water to provide a cushioning effect when the filter sand
is poured in. This helps protect the underdrain laterals
from excessive shock. (Be sure the winter drain cap is
securely in place on drain pipe).
NOTE: Check to confirm all laterals are in the down
position before loading with sand. (See Figure A.)
c. Carefully pour in correct amount and grade of filter sand,
as specified on Table 2. (Be sure center pipe remains
centered in opening). Because filter sand is not all the
same. THE LEVEL OF SAND MUST REMAIN A MIMIMUM OF
10" FROM THE TOP. Remove sand shield from internal
pipe.
4. Assemble Filter Control Valve to filter tank.
a level
concrete slab, very firm
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
a. Loosely pre-assemble both halves of the clamp with one
screw and one nut, turning the nut 2 or 3 turns. Do not
tighten. Wipe filter flange clean.
b. Insert Filter Control Valve (with valve/flange 0-ring in
place) into the tank neck, taking care that the center pipe
slips into the hole in the bottom of the valve. Install clamp
around tank and valve flange and assemble second screw
and nut. Tighten just enough so that the valve may be
rotated on tank for final positioning.
c. Wrap two turns of Teflon pipe sealant tape manufactured
for plastic pipe on the ¼" NPT male end of gauge.
Carefully screw pressure gauge, into 1/4"NPT tapped hole
in valve body. Do not over tighten.
d. Connect pump to control valve opening marked PUMP
according to instructions. After connections are made,
tighten valve flange clamp with screwdriver, tapping
around clamp with screwdriver handle to help seat valve
flange clamp.
5. Make return to pool pipe connection to control valve
opening marked RETURN and complete other necessary
plumbing connections, suction lines to pump, waste, etc.
6. Make electrical connections to pump per pump
instructions.
7. To prevent water leakage, be sure winter drain cap
is securely in place and all pipe connections are
tight.

INITIAL START-UP OF FILTER

1. Be sure correct amount of filter sand media is in tank and that
all connections have been made and are secure.
2. Depress Vari-Flo control valve handle and rotate to
BACKWASH* position. (To prevent damage to control valve
seal, always depress handle before turning.)
3.
Prime and start pump according to pump instructions (be sure
all suction and return lines are open), allowing the filter tank
to fill with water.
WARNING
: ALL SUCTION AND DISCHARGE
VALVES MUST BE OPEN WHEN STARTING THE
SYSTEM. FAILURE TO DO SO COULD CAUSE
SEVERE PERSONAL INJURY.
Once water flow is steady out the waste line, run the
pump for at least 2 minutes. The initial back-washing of the filter
is recommended to remove any impurities or fine sand particles
in the sand media.
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