P/N 99223000
3
Rev. E 2-22-02
P/N 99223000
10
Rev. E 2-22-02
Section I. How Your Filter Works.
Your high rate sand filter is designed to produce clear,
sparkling water and operate for years with a minimum
of maintenance when installed, operated and main-
tained in accordance with these instructions.
Your filter uses special filter sand to remove dirt par-
ticles from the water. Dirt is collected in the filter by
the sand bed as water flows through the filter. Water
enters the filter through the valve on top of the filter
and is distributed evenly downward across the sand
bed. The dirt is removed by the sand and the clean
water flows through the piping (laterals) at the bottom
of the filter, up through the standpipe, back to the
valve on top of the filter, where the clean water is
returned to the pool through the piping or hoses.
After a period of time, dirt will accumulate in the fil-
ter causing a resistance to the flow of water through
the filter. This resistance results in a diminished flow
of water and a rise in the pressure of the filter.
Eventually the filter sand will have removed so much
dirt and the filter pressure risen to such a point that it
will be necessary to clean (backwash) your filter.
By setting the valve on top of the filter to the back-
wash position, the flow of water is automatically
reversed through the filter so that the flow of water is
directed to the bottom of the filter, up through the sand
bed flushing, the dirt and debris out through the waste
line. Once the backwash procedure is complete, the
valve is manually returned to its filter position to
resume normal filtration.
The filter’s function is to remove suspended matter
from the water. It does not sanitize the water. For
sparkling clear water the water must be sanitized as
well as balanced. Pool chemistry is a specialized area,
and you should consult your local pool service spe-
cialist for specific details. In general, proper pool san-
itation requires a free chlorine level of 1 to 2 PPM and
a PH range of 7.2 to 7.6.
Your filtration system should be designed to meet
your local health codes. As a minimum, you must be
sure that your system will turnover the total volume of
water in your pool at least twice in a twenty-four hour
period.
WARNING
Failure to operate your filter system or inadequate filtration
can cause poor water clarity obstructing visibility in your
pool. Poor water clarity may obscure objects in the water
which while swimming and diving could cause severe
personal injury or death. Never swim in a pool with poor
water clarity.
▲
!
WARNING
Failure to operate your filter system or inadequate filtration
can cause poor water clarity obstructing visibility in your
pool and can allow diving into or on top of obscured
objects, which can cause serious personal injury or
drowning.
▲
!
WARNING
This filter operates under high pressure. When any part of
the circulating system (e.g., clamp, pump, filter, valves,
etc.) is serviced, air can enter the system and become pres-
surized. Pressurized air can cause the lid or control valve to
blow off which can result in severe injury, death, or proper-
ty damage. To avoid this potential hazard, follow these
instructions.
1. Before repositioning valves and before beginning the
assembly, disassembly, or adjustment of the clamp or
any other service of the circulating system: (a) Turn the
pump off and shut off any automatic controls to ensure
the system is not inadvertently started during the servic-
ing; (b) Open manual air relief valve; (c) Wait until all
pressure is relieved, pressure gauge must read zero (0).
2. Whenever installing the filter clamp, follow the filter lid
and clamp installation instructions exactly.
3. Once service on the circulating system is complete,
follow system restart instructions exactly.
4. Maintain circulation system properly. Replace worn or
damaged parts immediately (e.g., clamp, pressure gauge,
relief valve, o-rings, etc.).
5. Be sure that the filter is properly mounted and positioned
according to instructions provided.
▲
!
Section IX. Technical Data
Replacement Parts System
Item No.
Part No.
Description
1
272531
Valve
2
152165
Clamp Assmy
3
155050
Gauge
4
272541
O-Ring
5
150055
Drain Assmy, complete
6
152229
Standpipe Assmy SD35
6
152228
Standpipe Assmy SD40
6
152227
Standpipe Assmy SD60
6
152226
Standpipe Assmy SD80
7
150084
Lateral (SD35, SD40)
7
150085
Lateral, Xlong (SD60, SD80)
8
154526
Base, (SD35)
8
154520
Base, Large (SD40, 60, 80)
9
145339
SD 35, Tank Almd
9
145340
SD 35, Tank Gray
9
145345
SD 35, Tank Black
9
145341
SD 40, Tank Almd
9
145342
SD 40, Tank Gray
9
145346
SD 40, Tank Black
9
145343
SD 60, Tank Almd
9
145344
SD 60, Tank Gray
9
145347
SD 60, Tank Black
9
145334
SD 80, Tank Almd
10
155051
Sand Guide
Clamp Assmy includes 2 halfs of clamp, 2 screws & 2 nuts
Model
SD35
SD40
SD60
SD80
Filter Area
Sq. Ft.
1.23
1.9
2.3
3.4
Lbs. Of Sand
Required
100
150
200
350
Max. Working
Pressure
30
35
40
50
Vrtl Clearance
Required
45
49
55
60
Design Flow
Rate GPM
35
40
60
75
Max Water
Temp.
95 F
95 F
95 F
95 F
