Filter Control Valve Functions; Winterizing; Service & Repairs - Hayward S166T Owner's Manual

4. Turn pump off and set valve to RINSE position. Start pump
and operate until water in sight glass is clear—about 1/2 to 1
minute. Turn pump off, set valve to FILTER position and restart
pump. Your filter is now operating in the normal filter mode,
filtering particles from the pool water.
5. Adjust pool suction and return valves to achieve desired
flow. Check system and filter for water leaks and tighten
connections, bolts, nuts, as required.
6. Note the initial pressure gauge reading when the filter is
clean. (It will vary from pool to pool depending upon the
pump and general piping system). As the filter removes dirt
and impurities from the pool water, the accumulation in the
filter will cause the pressure to rise and flow to diminish.
When the pressure gauge reading is 8-10 PSI (0.55-0.69 BAR)
higher than the initial "clean" pressure you noted, it is time to
backwash (clean) the filter (see BACKWASH under Filter
Control Valve Functions.)
NOTE: During initial clean-up of the pool water it may be
necessary to backwash frequently due to the unusually
heavy initial dirt load in the water.
KEEP SAFETY LABELS IN GOOD CONDITION AND
REPLACE IF MISSING OR DAMAGED.
IMPORTANT: To prevent unnecessary strain on
piping system and valving, always shut off pump
before switching Filter Control Valve positions.
To prevent damage to the pump and filter and for
proper operation of the system, clean pump strainer
and skimmer baskets regularly.

FILTER CONTROL VALVE FUNCTIONS

FILTER—Set valve to FILTER for normal filtering. Also
use for regular vacuuming.
BACKWASH—For cleaning filter. When filter pressure
gauge rises 8-10 PSI (0.55-0.69 BAR) above start-up
(clean pressure):
Stop the pump, set valve to BACKWASH. Start pump
and backwash until water in sight glass is clear.
Approximately 2 minutes or less depending on dirt
accumulation. Proceed to RINSE.
RINSE—After backwashing, with pump off, set valve to
RINSE. Start pump and operate for about 1/2 to 1
minute. This ensures that all dirty water from
backwashing is rinsed out of the filter to waste,
preventing possible return to the pool. Stop pump,
set valve to FILTER, and start pump for normal
filtering.
WASTE—To bypass filter for draining or lowering water level and
for vacuuming heavy debris directly to waste. RECIRCULATE—
Water is recirculated through the pool system, bypassing the
filter.
CLOSED—Shuts off flow from pump to filter. VACUUMING—
Vacuuming can be performed directly into the filter. When
vacuuming heavy debris loads, set valve to WASTE position to
bypass the filter and vacuum directly out to waste.

WINTERIZING

1. Completely drain tank by unscrewing drain cap at base of filter
tank. Leave cap off during winter.
2. Depress Vari-Flo control valve handle and rotate so as to set
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
pointer on valve top between any two positions. This will allow
water to drain from the valve. Leave valve in this "inactive"
position.
3. Drain and winterize pump according to pump instructions.
SERVICE & REPAIRS
Hayward
Consult your local authorized
returns may be made directly to the factory without the expressed
authorization of Hayward Pool Products, Inc.
PLEASE REALIZE.. .
Pure, clear swimming pool water is a combination of two factors—
adequate filtration and proper water chemistry balance. One
without the other will not give the clean water you desire.
Your filter system is designed for continuous operation. However,
this is not necessary for most swimming pools. You can
determine your filter operation schedule based on your pool size
and usage. Be sure to operate your filtration system long enough
each day to obtain at least one complete turnover of your pool
water.
To properly sanitize your pool, maintain a free chlorine level of 1
to 3 ppm and a pH range of 7.2 to 7.6. Insufficient chlorine or an
out of balance pH level will permit algae and bacteria to grow in
your pool and make it difficult for your filter to properly clean the
pool water.
*NOTE: For new concrete or gunite pools, or where there is a large amount of
plaster dust or debris—start filter in FILTER position (not BACKWASH) to prevent
clogging of underdrain laterals
MAXIMUM RECOMMENDED SYSTEM FLOW RATE
BY PIPE SIZE
Pipe Flow rate Pipe
Size GPM Size
[mm] [Liter/Min] [mm]
1" 20 1 ½"
[32] [75] [50]
1 ¼" 30 2"
[40] [110] [63]
TABLE 1
SUGGESTED POOL CHEMISTRY
pH
TOTAL ALKALINITY
CALCIUM HARDNESS
0.2 ppm Maximum
COMBINED CHLORINE
CHLORINE (STABILIZED)
CHLORINE STABILIZER
(Cyanuric Acid)
dealer or service center. No
Flow rate Pipe Flow rate
GPM Size GPM
[Liter/Min] [mm] [Liter/Min]
45 2 ½" 110
[170] [75] [415]
80 3" 160
[300] [90] [600]
7.2 to 7.6
80 to 120 ppm
200 to 400 ppm
1.0 to 3.0 ppm
60 to 80 ppm
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