Toro Aqua-Clear AC-40 Operation manual

IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS
Aqua-Clear™
Fiberglass Sand Filters
Installation & User's Guide
Aqua-Clear

© 2011 The Toro Company, Inc. All rights reserved.
This document is subject to change without notice.
1588 N. Marshall Ave., El Cajon, CA 92020 [phone] or [phone]
Aqua-Clear™ and the Toro® logo is a trademark and/or a registered trademark of The Toro Company and/or its affiliated companies in the United
States and/or other counties. Unless noted, names and brands of others that may be used in this document are not used to indicate an affiliation or
endorsement between the proprietors of these names and brands.Those names and brands may be the trademarks or registered trademarks of
those parties or others.
P/N 151002 Rev. A 02/25/11
Customer Service
If you have questions about ordering replacement parts, please use the following contact
information:
Customer Service / Technical Support (8 A.M. to 4:30 P.M. — Eastern and Pacific Times)
Phone: [phone] or [phone]
Fax: [phone] or [phone]
Web site
visit www.toromicroirrigation.com or www.toro.com

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Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Table of Contents
Important Warning and Safety Instructions ......................................................................... ii
Section 1: Introduction ..................................................................................................... 1
Aqua-Clear Fiberglass Sand Filters Overview ........................................................ 1
General Features..................................................................................................... 1
Additional Features .................................................................................................. 1
Section 2: Installation ....................................................................................................... 2
Installing the AquaClear Fiberglass Sand Filter .......................................................2
Introduction .......................................................................................................... 2
How the Filter Works ...........................................................................................2
Installing the Filter ....................................................................................................4
Construction of the Manifold System ....................................................................... 5
How to Configure a 3-Way Valve ......................................................................... 5
Initial Start-Up .......................................................................................................... 6
Section 3: Maintenance ..................................................................................................... 7
Filter Care ................................................................................................................ 7
Cleaning................................................................................................................... 7
Filter Procedure ....................................................................................................... 7
Backwash Procedure .............................................................................................. 8
Winterizing and Storing the Filter ............................................................................. 8
Section 4: Troubleshooting .............................................................................................. 9
Section 5: Replacement Parts .......................................................................................... 11

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Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Consumer Information and Safety
The Aqua-Clear Fiberglass Sand Filters are designed and manufactured to provide many years of safe and reliable
service when installed, operated and maintained according to the information in this manual and the installation codes
referred to in later sections. Throughout the manual, safety warnings and cautions are identified by the symbol. Be
sure to read and comply with all of the warnings and cautions.
WARNING — THIS FILTER OPERATES UNDER HIGH PRESSURE
When any part of the irrigation system, (e.g., closure, pump, filter, valve(s), etc.), is serviced, air
can enter the system and become pressurized. Pressurized air can cause the top closure to
separate which can result in severe injury, death, or property damage. To avoid this potential
hazard, follow these instructions:
1. If you are not familiar with your irrigation system filtering system:
a. Do NOT attempt to adjust or service without consulting your dealer, or a qualified irrigation
system technician.
b. Read the entire Installation & User’s Guide before attempting to use, service or adjust the
filtering system.
2. Before repositioning valve(s) and before beginning the assembly, disassembly, or any other
service of the irrigation system: (A) Turn the pump OFF and shut OFF any automatic controls
to ensure the system is NOT inadvertently started during the servicing; (B) open the manual
air bleeder valve; (C) wait until all pressure is relieved.
3. Whenever installing the filter closure FOLLOW THE FILTER CLOSURE WARNINGS
EXACTLY.
4. Once service on the irrigation system is complete FOLLOW INITIAL START-UP
INSTRUCTIONS EXACTLY.
5. Maintain irrigation system properly. Replace worn or damaged parts immediately,
(e.g., closure, pressure gauge, valve(s), o-rings, etc).
6. Be sure that the filter is properly mounted and positioned according to instructions provided.
IMPORTANT WARNING AND SAFETY INSTRUCTIONS
Important Notice:
This guide provides installation and operation instructions for the Aqua-Clear™ Series
Fiberglass Sand Filters. Consult Toro Micro-Irrigation with any questions regarding this
equipment.
Attention Installer:
This guide contains important information about the installation, operation and safe usage of
this product. This information should be given to the owner and/or operator of this equipment after installation or left on
or near the filter.
Attention User: This manual contains important information that will help you in operating and maintaining this
filter. Please retain it for future reference.
WARNING — Before installing this product, read and follow all warning notices and instructions which are
included. Failure to follow safety warnings and instructions can result in severe injury, death,
or property damage. Call [phone] for additional free copies of these instructions.

iii
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
IMPORTANT WARNING AND SAFETY INSTRUCTIONS
WARNING — This filter must be installed in accordance with the all applicable local codes and ordinances.
Improper installation could result in death or serious injury to users, installers, or others and may
also cause damage to property.
Always disconnect power to the irrigation system at the circuit breaker before servicing the filter.
Ensure that the disconnected circuit is locked out or properly tagged so that it cannot be switched
on while you are working on the filter. Failure to do so could result in serious injury or death to
service person, users or others due to electric shock.
WARNING — Do not operate the filter until you have read and understand clearly all the operating instructions
and warning messages for all equipment that is a part of the irrigation system. The following
instructions are intended as a guide for initially operating the filter in a general irrigation system
installation. Failure to follow all operating instructions and warning messages can result in
property damage or severe personal injury or death.
WARNING — To reduce the risk of injury, do not permit children to use this product unless they are closely
supervised at all times.
Never attempt to adjust any closures or lids or attempt to remove or tighten bolts when the system
is pressurized. These actions can cause the closure to blow off and could cause severe personal
injury or death if they were to strike a person.
WARNING — Never exceed the maximum operating pressure of the system components. Exceeding these
limits could result in a component failing under pressure. This instantaneous release of energy
can cause the closure to blow off and could cause severe personal injury or death if they were to
strike a person.

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Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Blank Page

1
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Section 1
Introduction
Aqua-Clear™ Fiberglass Sand Filter Overview
The Aqua-Clear™fiberglass sand filter provides years of dependable, low maintenance operation. Aqua-Clear
superior filtration performance delivers a level of dependability and ease of operation and maintenance. Aqua-
Clear features a special internal design that keeps the sand bed level, ensuring even water flow, and resulting in
the most efficient filtration possible.
Aqua-Clear Sand Filter
Features
• Proven internal design ensures that all water receives maximum filtration for maximum effectiveness.
• Unique manufacturing process creates a one-piece, fiberglass reinforced tank with a UV-resistant coating
for years of dependable, corrosion-resistant service
• Flow system design controls filtration quality and ensures maximum run times between backwashing to save
you time
• Full 2 in. drain
• 8 in. opening for easy access to sand bed
•Maximum Operating Pressure 75 psi
Additional Features
• Combination sand and water drain speeds servicing and winterizing
• All internal parts are threaded for ease of maintenance
• Swing-away water diffuser allows instant access to sand and all internal parts
•Can be installed as a single, dual, or multiple tank system
Aqua-Clear

2
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Section 2
Installation
Note: Before installing this product, read and follow all warning and safety notices and instructions
starting on page ii.
Installing the Aqua-Clear Fiberglass Sand Filter
Only a qualified service person should install the Aqua-Clear Fiberglass Sand Filter. This filter is
designed and intended for use to filter water.
Introduction
The following general information describes how to install the Aqua-Clear fiberglass sand filter. This filter operates
under pressure and if assembled improperly or operated with air in the water circulation system, the top closure
can separate and result in an accident causing property damage or serious bodily injury. A warning label has been
affixed to the top of the filter and should not be removed. Keep safety labels in good condition and replace if
missing or illegible.
How the Filter works
The Aqua-Clear fiberglass sand filter is designed to operate for years with a minimum of maintenance and when
installed, operated and maintained in accordance with these instructions, it will provide years of trouble free
operation.
Dirt is collected in the filter as the water is directed into the top bulkhead. Dirty water flows into the diffuser at the
top of the tank and is directed downward into the top surface of the filter sand bed. The dirt is collected in the
sand bed and the clean water flows through the laterals and lower piping at the bottom of the filter up into the
lower bulkhead. Clean water is returned through the piping system into the irrigation system.

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Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
WARNING — Failure to maintain and operate your filter system or inadequate filtration can result in clogging of the
irrigation system and crop damage.
WARNING — Filters should never be tested or subjected to air or gas under pressure. All gases are compressible
and under pressure create a danger. Severe bodily injury or property damage could occur if the filter
is subjected to air or gas pressure.
1. Check carton for any evidence of damage due to rough handling in shipment. If carton or any filter components
are damaged, notify the freight carrier immediately.
2. Carefully remove the accessory package and the filter tank from the carton.
3. Mount the filter on a permanent slab, preferably concrete poured in a form or on a platform constructed of
concrete block or brick. DO NOT use sand to level the filter or for the pump mounting, as it will wash away.
4. Provide space and lighting for routine maintenance access. Do not mount electrical controls over the filter. One
needs to be able to stand clear of the filter when starting the pump. Minimum space requirements may be found
on the large nameplate on the filter.
5. Position filter so that the port locations are in the desired final positions.
6. Use crushed silica sand in the filter. Sand and gravel specifications – be certain the proper sand and gravel
is used as described in Table 2. Before pouring the sand or gravel into the filter, look inside and check the lower
under-drain for broken or loose laterals (SEE item 15 on page 110), which may have been accidentally damaged
by rough handling during shipment. Replace any broken parts if necessary. USE #20 CRUSHED SILICA
SAND IN THE FILTERS. More coarse crushed silica sand may be used if required by the irrigation
device.
NOTE: The free board distance (distance between sand/gravel mixture and the top of the filter tank) is the most
important variable and should be maintained. Sand and gravel density will vary and therefore sand and gravel
amount are given as a reference.
‡ Pea Gravel to be 3/8” to 1/8” diameter.
* Sand to be No. 20 crushed silica
Table 2.
"X" FREE BOARD
SAND & GRAVEL
LEDOM
DRAOBEERF
"X"
†AIDEMRETLIF
)SDNUOP(
‡LEVARGAEPDNAS
04CA"4/1805521
06CA"2/10105572
001CA"4/111051054
041CA"2/131572056
The pressure will rise and the flow to the irrigation system will be lowered as the dirt is collected in the filter.
Eventually, the filter will become so plugged with dirt that it will be necessary to perform the backwash procedure.
It is important to know when to backwash the filter. Backwashing is discussed further under the subsequent sections
of this guide.
Please note that a filter removes suspended matter and does not sanitize the irrigation water. The irrigation water
must be sanitized and the water must be treated to remove organic materials and other contaminants. Your
filtration system should be designed to meet your local codes. It is recommended that the filtration system be
designed to provide the full water requirements of the irrigation system even during backflushing.

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Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
WARNING — Failure to position the Automatic Air Vent inside of the Closure will allow excessive trapped air to
accumulate in the filter. If the Closure is properly closed, trapped air can cause the Closure to
separate and could cause severe bodily injury and/or property damage.
7. Pivot the diffuser out of the center of the tank by rotating the diffuser assembly counter clockwise. Fill the tank
about half full of water. Pour pea gravel first and then the sand into the top of the filter at a slow rate so that the
impact of the filter media does not damage the laterals. See Table 2 for the proper amounts of sand and gravel.
Fill filter to the proper level to maintain freeboard, as shown in Table 2. Pivot the diffuser assembly back to its
vertical position. Be certain the automatic air vent is protruding into the top of the closure as indicated below in
Figure 1. Be sure that the automatic air vent is in the center of the filter closure and that the screen strainer is
attached.. Wash away all sand around the threaded opening at the top of the tank.
Installing the Filter
WARNING — Use care when installing closure. The closure should turn freely in the filter, if resistance to
closure insertion is felt, then slowly remove the closure by turning counter-clockwise. The
starting thread of the tank and closure must engage properly in order to secure the closure.
Do not cross-thread closure.
Failure to install the closure properly can cause the closure to separate and may could severe bodily
injury and/or property damage.
1. Assemble the pressure gauge and bleeder valve to the closure lid. Clean the lid o-ring and lubricate with silicone
grease such as Dow #33, 40 or GE 300, 623 lubricant. Place the closure lid on the filter and tighten, making certain
the air vent is up inside the dome of the closure.
2. With the plastic wrench, provided with the filter, tighten the closure as tight as possible using two hands on the
wrench handles. As a minimum, the closure must be hand tight + 1/4 turn.
3. Assemble piping and pipe fittings to pump and valve. All piping must conform to local and state codes.
4. Use sealant compounds on all male connections of pipe and fittings. Use only pipe compounds suited for plastic
pipe. Support pipe to prevent strains on filter, pump or valve.
5. Long piping runs and elbows restrict flow. For best efficiency, use the fewest possible number of fittings, and
large diameter pipe (at least 2”).
Figure 1.
MANUAL AIR
BLEEDER
VALV E PRESSURE
GAUGE
CLOSURE
TAN K
AUTOMATIC
AIR VENT
XX
XX
XX
XX
XX
CAUTION — Operating at excessive vacuum levels can cause the tank to crack and could cause property damage.
6. When installing backwash lines, it is recommended that a vacuum breaker be installed on installations where the
backwash line length exceeds 40 ft. or the backwash line discharges more than 10 ft. lower than the lowest portion
of the irrigation system where air can enter the system.
7. The maximum operating pressure of the unit is 75 pounds per square inch (psi). Never operate this filter above these
pressures or attach a pump to this filter that has more than 75 psi shut off pressure.
8. Always install a chemical and fertilizer injection systems upstream of the filter. Always install a check valve upstream
of the chemical injection system to protect the water source from being contaminated.
9. CAUTION — A positive shut off valve is not recommended at the outlet of the filtering system. If the system
is ever run with such a valve closed, the internal air relief system becomes inoperative and could create a
dangerous situation. Additionally, running the system with no flow will seriously damage the equipment.
10. Never store chemicals within 10 ft. of the filter. Chemicals should always be stored in a cool, dry well ventilated area.

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Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Construction of the manifold system
To construct the manifold system seen here, use only schedule 40 PVC pipe and fittings to construct it. Shown
below is an illustration of the manifold setup in filter position. Always support the long runs of PVC pipe to prevent
any added stresses on the filter bulkheads and glue joints and use as short of runs of PVC pipe as possible. Minimize
the number of fittings and elbows used in the system. This will reduce pressure drop in your system and improve
efficiency.
For pipe lengths and parts numbers see the table below:
4
7 36 5
128
DEDEENYTQ.ONTRAP/HTGNELLEDOMNOITPIRCSED.ONMETI
2"057.504-CA04HCSEPIPCVP1
2"573.806-CA04HCSEPIPCVP1
2"573.11001-CA04HCSEPIPCVP1
2"573.41041-CA04HCSEPIPCVP1
2"005.5104-CA04HCSEPIPCVP2
2"521.8106-CA04HCSEPIPCVP2
2"521.12001-CA04HCSEPIPCVP2
2"521.42041-CA04HCSEPIPCVP2
1"005.51LLA04HCSEPIPCVP3
2"057.5LLA04HCSEPIPCVP4
3287291LLAPILSxPILSxPILS"2EET5
5562251LLASXSGED09"2WOBLE6
2620362LLACVP"2EVLAVYAW-37
2290172LLATESNOINU"28
The 3-way backflush valves need to be re-configured prior to construction of the manifold system. In order to re-
configure the 3-way backflush valves, please follow these steps:
1. Remove the set screw from both of the valves.
2. Remove the two set-pins from the valve handle assembly.
3. Rotate the valve handle 180° from its original position. The word “OFF” should now be in line with the tee outlet
of the valve.
4. Replace the set screw in both of the valves.
5. Replace the set-pins as follows:
a. Right-hand valve: L-90 positions
b. Left-hand valve: R-90 positions
Table: Pipe Lengths and Part Numbers
How to Configure a 3-way Valve

6
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Initial Start-up
1. Connect the water source to the filter, but do not connect the filter to the downstream irrigation system until the
filter sand has been adequately cleaned. Always backflush the filter immediately upon start up to remove
out the small particles that are in the sand. If you start the system without cleaning the sand, the initial flow of
these small particles into the irrigation system can cause clogging.
2. Be sure the backwash line is open so that water is free to flow out the backwash line. Set the valve or the manifold
to the BACKWASH position.
WARNING — If the tank closure not installed properly, air entering the filter can cause the closure to separate and
could cause severe bodily injury and/or property damage.
3. Check closure on filter for tightness.
4. Open the manual air bleeder on the filter closure. Stand clear of the filter and start the pump allowing it to prime.
5. Close the air bleeder on the closure when all the air is removed from the filter and a steady stream of water emerges.
NOTE: Irrigation filter sand is typically not pre-washed and requires an extended backwash cycle at initial
start-up; continue to backwash until the backwash water is clear.
WARNING — To prevent equipment damage and possible injury, always turn the pump off before changing the valve
position.
6. Stop the pump. Set the valve or the manifold to the FILTER position.
7. Ensure at least one zone valve is open so that water is free to flow to the irrigation system.
8. Open the manual air bleeder on the filter closure. Stand clear of the filter and start the pump.
9. Close the air bleeder on the filter closure when all the air is removed from the filter and a steady stream of water emerges.
10. The filter has now started its filtering cycle. You should ensure that water is flowing to the irrigation system and take
note of the operating pressure when the filter is clean.
WARNING — Wash the pea gravel before it is inserted into the tank.
WARNING — For dual tank systems, only one valve should be in backflush position at a time.

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Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Section 3
Maintenance
This section describes how to maintain your Aqua-Clear Fiberglass Sand Filter.
Filter Care
The filter is a very important part of the system equipment and installation. Proper care and maintenance will add
many years of service to the system. Follow these suggestions for long trouble-free operations:
1. To clean the exterior of the filter of dust and dirt, wash with a mild detergent and water then hose off. Do not
use solvents.
2. If internal maintenance is required, sand may be removed by removing the sand drain from the bottom of the filter
and flushing with a garden hose.
3. If after a number of years, the filter tank appears foggy in color or rough in texture, the tank surface can be
painted. We recommend the use of a Quick Dry Spray Enamel. Do NOT paint the valve.
WARNING — Always visually inspect filter components during normal servicing to ensure structural safety. Replace
any item which is cracked, deformed or otherwise visually defective. Defective filter components can
allow the filter top or attachments to blow off and could cause severe bodily injury or property
damage.
4. The filter closure on your Aqua-ClearSand Filter was manufactured with high quality corrosion resistant
materials. This part should be carefully inspected whenever servicing your filter. If excessive leakage is
notedcoming from the closure/tank interface, the closure and o-ring should be carefully inspected and
replaced if any signs of deterioration exist.
5. Your filter is a pressure vessel and should never be serviced while under pressure. Always relieve tank pressure
and open air bleeder on the filter closure before attempting to service your filter.
6. When restarting your filter, always open the manual air bleeder on the filter closure and stand clear of the filter.
Cleaning
1. The filter should be backwashed when one of the following conditions is met:
a. A second pressure gauge, installed downstream of the filter, should be compared to the pressure gauge
located on the filter tank. The downstream pressure gauge should read a lower pressure under normal
conditions due to pressure lost in the filter. If this normal pressure differential increases 6 lbs., the filter
should be backwashed.
3. In addition, the filter should be backwashed on a regular basis depending on need. In order to determine the
minimum frequency of backwashing, start backwashing after every 8 hours of operation. If the backwash
water is clear, then the frequency can be extended. Keep in mind that factors like weather conditions, heavy
rains, algae blooms, groundwater levels and water temperature all affect the frequency of backwash. As you
use your irrigation system, you will become aware of these influences.
4. If at any time the starting pressure after backwashing the filter indicates 4 to 6 PSI higher than normal starting
pressure, inspect the sand for chemical or physical changes from its original condition. Raking of the sand or
replacement of the sand may be required.
Filter Procedure (see diagram on page 8)
1. Turn pump OFF.
2. Handles of the 3-way valves are to be set vertically (straight up and down)
3. Lock the handles in place by using the thumb screw lock
4. Note: Water enters the PVC tee located between the two 3-way valves. Water outlet to the field exits from
the threaded PVC tee located on the bottom manifold
5. Note: If water comes out of the upper manifold you are backflushing, not filtering. Turn the 3-way valve so
that the word "OFF" is at the top of the 3-way valve.

8
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
CAUTION — NEVER PUMP WATER WHEN BOTH 3-WAY VALVE HANDLES ARE HORIZONTAL!
Backwash Procedure
NOTE: The following Backwash instructions only apply for the manifold setup for two filters. For a single
filter setup, refer to your valve instruction manual.
1. Turn pump OFF before turning valve handle.
2. Close the outlet of the manifold using a plug or a gate valve in your irritation plumbing (if installed).
3. Turn the left 3-way valve. The valve will only turn in one direction. Do not force the valve handle. The word
"OFF" on the valve should rotate towards the other 3-way valve.
4. Turn pump ON and run the backflush until the water runs clear and clean (approximately 2 minutes).
5. Turn the 3-way valve to its vertical position. Backflushing then stops and the filter returns to normal filtration
operation.
6. Turn the right hand 3-way valve. The word "OFF" on the valve should rotate towards the other 3-way valve.
Run the backflush until the water runs clear and clean (approximately 2 minutes).
7. Turn the 3-way valve to its vertical position. Backflushing then stops and the filter returns to normal filtration
operation.
8. Backwash whenever the pressure increases by 5 - 10 psi.
CAUTION — NEVER PUMP WATER WHEN BOTH 3-WAY VALVE HANDLES ARE HORIZONTAL OR WITH THE
OUTLET BLOCKED!
Winterizing and Storing the Filter
1. After the growing season is over, make sure that you backwash the filter before turning off the irrigation system.
This helps protect the filter for future use.
2. Leave the manifold in the BACKWASH position.
3. Always drain the water from the filters, the 3 way valves and the manifold.
4. Remove the plug on the bottom of the filter. The filter will drain very slowly, and therefore, it is recommended
that the drain plug be left out.
5. Drain all appropriate system piping.
6. It is recommended to cover the equipment with a tarpaulin or store out of the weather to inhibit deterioration
from weather.

9
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Section 4
Troubleshooting
Use the following troubleshooting information to resolve possible problems with your filter.
WARNING — THIS FILTER OPERATES UNDER HIGH PRESSURE
When any part of the circulating system, (e.g., closure, pump, filter, valve(s), etc.), is serviced, air can
enter the system and become pressurized. Pressurized air can cause the top closure to separate which
can result in severe injury, death, or property damage. To avoid this potential hazard, follow these
instructions:
1. If you are not familiar with your filtering system:
a. Do NOT attempt to adjust or service without consulting your dealer, or a qualified
technician.
b. Read the entire Installation & User’s Guide before attempting to use, service or adjust the
filtering system.
2. Before repositioning valve(s) and before beginning the assembly, disassembly, or any other
service of the filter system: (A) Turn the pump OFF and shut OFF any automatic controls
to ensure the system is NOT inadvertently started during the servicing; (B) open the manual air
bleeder valve; (C) wait until all pressure is relieved.
3. Whenever installing the filter closure FOLLOW THE FILTER CLOSURE WARNINGS EXACTLY.
4. Once service on the irrigation system is complete FOLLOW INITIAL START-UP INSTRUCTIONS
EXACTLY.
5. Maintain irrigation system properly. Replace worn or damaged parts immediately, (e.g., closure,
pressure gauge, valve(s), o-rings, etc.).
6. Be sure that the filter is properly mounted and positioned according to instructions provided.
Note: Turn off power to unit prior to attempting service or repair.
Problems and Corrective Actions
PROBLEM CAUSE REMEDY
irrigation water not sufficiently clean 1. Break in the line. Repair breaks in system and flush all dirt from system
prior to restarting the system.
2. Too frequent a backwash cycle. Add additional tanks to increase filtration capacity
between backflush cycles.
3. Improper amount or wrong sand size. Check sand bed Freeboard and sand size or
consult a service technician.
4. Channeling of sand allows dirty water Rake the sand and consult your dealer to determine the
downstream of the filter. cause of channeling.
5. Air strainer is damaged or missing. Replace damaged components.
High filter pressure 1. Insufficient backwashing. Backwash until effluent runs clear.
2. Sand bed plugged with mineral deposits. Rake or replace sand.
3. Partially closed valve. Open valve or remove obstruction in return line.
Short cycles between cleaning 1. Improper backwash. Backwash until effluent runs clear.
2. Exceptionally dirty water. Install additional tanks to increase filtration capacity.
3. Plugged sand bed. Manually remove top 1” surface of sand bed,
replace with new sand.
4. Flow rate too high. Install additional tanks to increase filtration capacity.

10
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Flow to system diminished. 1. Break in line. Repair line and flush the system before restart.
2. Filter needs to be cleaned Backflush filter according to directions
3. Valve is closed Check pressures and valve settings.
Sand in irrigation lines 1. Broken under drain lateral. Replace broken or damaged laterals.
Sand loss to waste 1. Backwash rate too high. Reduce backwash flow rate.
2. Improper sand size. Change to proper sand.
3. Air strainer is damaged or missing. Replace damage components.
Leak at closure 1. Improperly tightened closure. Shut off pump, relieve tank pressure,
open air bleeder, tighten closure properly.
2. Dirt or contamination on sealing surface. Shut off pump, relieve tank pressure, open
air bleeder, remove closure and clean all sealing
surfaces. Reassemble closure properly.
3. Damaged part. Same as above except replace damaged o-ring,
closure, tank or any combination of parts as required.
Leak at bulkhead 1. Improper tightened bulkhead assembly. Shut off pump, relieve tank pressure, open air bleeder,
remove closure and remove sand to access leaking
bulkhead. Hold the 2” bulkhead and tighten the
2” internal locknut. Hand tighten plus 1/2 turn.
2. Dirt or contamination on sealing surfaces. Shut off pump, relieve tank pressure, open
air bleeder, remove closure and remove sand to
access leaking bulkhead. Remove attached tank
internals and remove bulkhead assembly. Clean all
mating surfaces and seals. Replace the bulkhead
assembly, being careful to assemble properly.
Tighten assembly as indicated above.
3. Damaged part. Same as above except replace damaged part or
combination of parts.
PROBLEM CAUSE REMEDY

11
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
Aqua-Clear Fiberglass Sand Filter
Replacement Parts
20
21 22
24
23
25
29
32
29
30, 31
28
17
18
26
14
16
15
11
13
12
10
9
8
35
27
6
4
3
1
19
33
18
26
17
★★
★★
★ Used on
AC-100 and
AC-140 filters.
LEDOM.MIDA.MIDB.MIDC.MIDD
CA - 04
.ni½03.ni½91.ni¾01.ni½23
CA - 06
.ni½53.ni½42.ni8/5-31.ni½73
CA - 001
.ni¾93.ni½03.ni¼61.ni¾14
CA - 041
.ni¼54.ni½63.ni¾81.ni¼74
Section 5
Replacement Parts

12
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
AC-40 and AC-60 Aqua-Clear Fiberglass Sand Filter Replacement Parts
metI
.oN .oNtraP SRETLIFDNAS noitpircseD
1986451.yssaeet/redeelbriA
2007451redeelbriassarb-retpadA
3184199DH-eguaG
4166451retpadaredeelbria-gnir-O
5466451s/s61-.ni8/3-tuN
6daerhtsserttub.ni6-erusolC
394451erusolcgnir-O
8530051reniartS
993005 AC-40feilerriaebuT
904005 AC-60feilerriaebuT
0189545 .yssaresuffiD
0199545 C-60A.yssaresuffiD
1130845104-CAreppu.yssagnipiP
1133545106-CAreppu.yssagnipiP
21630051ebutfeilerriarotcennoC
3110845104-CAr
ewol.yssagnipiP
3150845106-CArewol.yssagnipiP
31708451001-CArewol.yssagnipiP
31984451041-CArewol.yssagnipiP
metI
.oN .oNtraP SRETLIFDNAS
noitpircseD
5109225104-CAL.ni61/116-laretaL
51580051.qer6,06-CAnrut4/1-.yssAlaretaL
6122225106-CA.yssAbuH
6136745104-CAlaretaLbuH
71022251ni2niarddnaS ..
71896451iarddnasTPN.ni¾togipS nn
8116175306-CA/04-CAniardTPN.ni¼gulP
91725451erusolc.ni½8hcnerW
9121545106-CA/04-CAerusolc.ni6hcnerW
91015451munimulaerusolcni6hcnerW
02214451.qer2,lanretni.ni2tunkcoL
12614451.qer2,lanretni.ni2recapS
22294451.qer2,daehklub.ni2gni
r-O
32804451.qer2,lanretxe.ni2recapS
42835451.qer2,daehklub.ni2teksaG
52504451.qer2,.ni2daehkluB
62494472.ni8/52X.ni61/3gnir-O
62511291retpadaria21-2#gnir-O
72814451s/s.ni8/3rehsaW
8262945104-CA,.aid.ni61tooF
8202545106-CA,.aid.ni91tooF
92494472.qer2,.rtpdaevlavgnir-O
03290172tik.rtpda.dht.ni2
13490172ik.rtpda.dht.ni½1 tt
23690172tik.rtpdapils.ni2&.ni½1
33700151.klB,.dhtsserttub.ni6,erusolctiK
33800151.klB,.dhtsserttub.ni½8,erusolctiK
437864
51etelpmocegakcapgnittiF
5311645104-CA.ni¾3reniartstnevriarecapS
5321645106-CA.ni½4reniartstnevriarecapS
53316451001CA.ni½5reniartstnevriarecapS
53416451041-CA.ni5reniartstnevriarecapS
204451.qer3,06/04-CAgnitnuom.tfepaT
704451.qer3,041-CA/001-CAgnitnuom.tfepaT
206151.ni2hcnerwdaehkluB
41745152-02smetiedulcni,tikdaehkluB
AC-40
1
1

13
Aqua-Clear™Fiberglass Sand Filter Installation and User’s Guide
AC-100 and AC-140 Aqua-Clear Fiberglass Sand Filter Replacement Parts
metI
.oN
.oNtraP SRETLIFDNAS
noitpircseD
1465372.yssaydobfeilerrialaunaM
3050551eguagerusserP
2214451lanretni.ni2tuN
4494472..d.i.ni8/5-2X.ni61/3gnir-O
6575451sserttub.ni½8erusolC
7905251.ni½8gnirerauqS
9140051001-CAfeilerriaebuT
9240051041-CAfeilerriaebuT
01264451001-CA.yssaresuffiD
01609451041-CA.yssaresuffiD
11624451001-CAreppu.yssagnipiP
11005451041-CAreppu.yssagnipiP
51045451.qer8,041-CAL.ni21-laretaL
51202251.qer8,001-CAL.ni8/19-laretaL
61354451laretaLbuH
81178451.ni½1.dhtpaC
91806151munimulaerusolc.ni½8hcnerW
91725451erusolc.ni½8hcnerW
82695451041-CA/001-CA,.aid.ni42tooF
73690172 roftikretpadapilsni2&ni2/11
)riap(evlavo/w.tsni

P/N 151002Rev. A 02/25/11
*151200*