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MODEL S166T, S166T90
IS166T90 Rev E
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
PROBLEM SOLVING LIST
LOW WATER FLOW
SHORT FILTER CYCLES
POOL WATER WON'T CLEAR UP
REMEDY
1. Check skimmer and pump
1. Check for algae in pool and
1. Check chlorine, pH and total
strainer baskets for debris.
2. Check for restrictions in
intake and discharge lines.
3. Check for air leak in intake
line (indicated by bubbles
returning to pool).
4. Backwash filter.
superchlorinate as required.
2. Be sure chlorine and pH
levels are in proper range
(adjust as required).
3. Check surface of filter sand
for crusting or caking
(remove 1 " of sand if
necessary).
alkalinity levels and adjust
as required.
2. Be sure flow rate through
filter is sufficient.
3. Operate filter for longer periods.
4. Be sure Vari-Flo valve is set
on "Filter" position.
SUGGESTED POOL CHEMISTRY LEVELS
pH
7.2 to 7.6
TOTAL ALKALINITY
80 to 120 ppm
CALCIUM HARDNESS
200 to 400 ppm
COMBINED CHLORINE
0.2 ppm Maximum
CHLORINE (STABILIZED)
1.0 to 3.0 ppm
CHLORINE STABILIZER
(Cyanuric Acid)
60 to 80 ppm
DATE OF INSTALLATION ____________________
PURCHASED FROM _______________________
MODEL _______________
SERIAL NUMBER _______________________
▲Retain this Warranty Certificate in a safe and convenient location for your records.
MAXIMUM RECOMMENDED SYSTEM FLOW RATE BY PIPE SIZE
Pipe Size
[mm]
Flow rate
GPM [Liter/Min]
Pipe Size
[mm]
Flow rate
GPM [Liter/Min]
Pipe Size
[mm]
Flow rate
GPM [Liter/Min]
1”
[32]
20
[75]
1 ½”
[50]
45
[170]
2 ½”
[75]
110
[415]
1 ¼”
[40]
30
[110]
2”
[63]
80
[300]
3”
[90]
160
[600]
TABLE 2
PRODUCT REGISTRATION
(Retain For Your Records)
