AQUATROL AQT-275 User manual

AQT275
POWERFLO SERIES
SERVICE MANUAL
CONTROL VALVES

General Residential Installation 4
AQT-275 Timer Start-up Setting Procedures 5
AQT-275 Timer Delay Start-up Setting Procedures 6
Regeneration Cycle Program Setting Procedures 7
Water Conditional Diagrams 8
Dimensional Drawings 11
Body Valve Assembly 12
Body Valve Assembly Parts List 13
Control Drive Assembly 14
Control Drive Assembly Parts List 15
160 Brine System Assembly 16
160 Brine System Assembly Parts List 17
Troubleshooting 18
Wiring Diagram 20
Notes 21
TABLE OF CONTENTS
AQUATROL | P.O. Box 2235 Chino Hills, CA 91709 • USA
CONTROL VALVES

Page 4
CONTROL VALVES
General Residential
Installation
Installation Instructions
1. Place the softener tank where you want to install the unit making sure the unit is level and on a rm base.
(Maximum 4 feet apart for twin units.)
2. All plumbing should be done in accordance with local plumbing codes. The pipe size for the drain line should be the same size as the
drain line ow control female connection. Water meters are to be installed on soft water outlets. Twin units with (1) one meter shall be
installed on common soft water outlets of units.
3. Solder joints near the drain must be done prior to connecting the Drain Line Flow Control tting. Leave at least 6" between the DLFC
and solder joints when soldering when the pipes are connected on the DLFC. Failure to do this could cause interior damage to the
DLFC.
4. Teon tape is the only sealant to be used on the drain tting. The drain from twin units may be run through a common line.
5. Make sure that the oor is clean beneath the salt storage tank and that it is level
6. Place approximately 1" of water above the grid plate (if used) in your salt tank. Salt may be place in the unit at this time.
7. On units with by-pass, place in by-pass position. Turn on main water supply. Open a cold soft water tap nearby and let run a few
minutes or until the system is free from foreign material (usually solder) that may have resulted from the installation.
8. Place the by-pass in service position.
9. Manually index the softener control into "service" position and let water ow into the mineral tank. When water ow stops, open a
cold water tap nearby and let run until air pressure is relieved.
10. Electrical: All electrical connections must be connected according to codes. Use electrical conduit if applicable. See Wiring Diagram
section for more information.
11. Plug into power supply
Water Pressure A minimum of 0.2 Mpa of water pressure is required for valve to operate eectively
Electrical Supply Continuous current supply is required, check voltage compatibility
Existing Free of any deposits or build-ups inside pipes
Installation Location Locate close to drain and connect according to plumbing codes
Bypass Valves Always provide for the installation of a bypass valve
CAUTION
Do not exceed 0.8 Mpa water pressure
Do not exceed 100°F water temperature
Do not subject unit to freezing conditions

Page 5
CONTROL VALVES
AQT-275 Timer
Start-up Setting Procedures
How To Set Days On Which Water Conditioner Is To
Regenerate:
Rotate the skipper wheel until the number "1" is at the red pointer.
Set the days that regeneration is to occur by sliding tabs on the
skipper wheel outward to expose trip ngers.
Each tab is one day. Finger at red pointer is tonight.
Moving clockwise from the red pointer, extend or retract ngers to
obtain the desired regeneration schedule.
How To Set The Time Of Day:
Press and hold the blue button in to disengage the drive gear.
Turn the large gear until the actual time of day is at the time of day
pointer.
Release the blue button to again engage the drive gear.
How To Manually Regenerate Your Water Condi-
tioner At Any Time:
Turn the manual regeneration knob clockwise.
This slight movement of the manual regeneration knob engages
the program wheel and starts the regeneration program.
The black center knob will make one revolution in the following
approximately three hours and stop in the position shown in the
drawing.
Even though it takes three hours for this center knob to complete
one revolution, the regeneration cycle of your unit might be set
only one half of this time.
In any event, conditioned water may be drawn after rinse water
stops owing from the water conditioner drain line.
How To Adjust Regeneration Time:
1. Disconnect the power source.
2. Locate the three screws behind the manual regeneration knob
by pushing the blue button in and rotating the 24 hour dial
until each screw appears in the cut out portion of the manual
regeneration knob.
3. Loosen each screw slightly to release the pressure on the time
plate from the 24 hour gear.
4. Locate the regeneration time pointer on the inside of the 24
hour dial in the cut out.
5. Turn the plate so the desired regeneration time aligns next to
the raised arrow.
6. Push the blue button in and rotate the 24 hour dial. Tighten
each of the three screws.
7. Push the blue button and locate the pointer one more time to
ensure the desired regeneration time is correct.
8. Reset the time of day and restore power to the unit.

Page 6
CONTROL VALVES
AQT-275 Timer Delay
Start-up Setting Procedures
Typical Programming Procedure
Calculate the gallon capacity of the system, subtract the necessary reserve requirement and set the appropriate gallons available opposite
the small white dot on the program wheel. Note, drawing shows 10,000 gallon setting. The capacity (gallons) arrow denotes remaining
gallons exclusive of the calculated reserve.
Note: To set meter capacity at initial start-up, either:
1. Rotate the manual regeneration knob one full revolution.
or
2. Rotate the program wheel manual clockwise and align white dot with capacity arrow.
This procedure must be followed any time the program wheel setting is changed.
How To Set The Time Of Day:
Press and hold the white button in to disengage the drive gear.
Turn the large gear until the actual time of say is opposite of the time of day pointer.
Release the white button to again engage the drive gear.
How To Manually Regenerate Your Water Conditioner At Any Time:
Turn the manual regeneration knob clockwise one "click".
This slight movement of the manual regeneration knob engages the program wheel and starts the regeneration program.
The black center knob will make one revolution in the following approximately three hours and stop in the position shown in the drawing.
Even though it takes three hours for this center knob to complete one revolution, the regeneration cycle of your unit might be set for only
on half of this time.
In any event, conditioned water may be drawn after rinse water stops owing from the water conditioner drain line.
NOTE:
To set meter capacity
rotate manual knob
1-360º revolution to
set the gallons.

Page 7
CONTROL VALVES
How To Set The Regeneration Cycle Program:
The regeneration cycle program on your water conditioner has been factory preset, however, portions of the cycle or program may be
lengthened or shortened in time to suit local conditions.
Timer Setting Procedure :
How To Change The Length Of The Backwash Time:
The program wheel as shown in the drawing is in the service position. As you look at the numbered side of the program wheel, the group
of pins starting at zero determines the length of time your unit will backwash.
For example: If there are six pins in this section, the time of backwash will be 12 min. (2 min. per pin). To change the length of backwash
time, add or remove pins as required. The number of pins times two equals the backwash time in minutes.
How To Change The Length Of Brine And Rinse Time:
The group of holes between the last pin in the backwash section and the second group of pins determines the length of time that your
unit will brine and rinse (2 min. per hole).
To change the length of brine and rinse time, move the rapid rinse group of pins to give more or fewer holes in the brine and rinse section.
Number of holes times two equals brine and rinse time in minutes.
How To Change The Length Of Rapid Rinse:
The second group of pins on the program wheel determines the length of time that your water conditioner will rapid rinse (2 min. per pin)
To change the length of rapid time, add or remove pins at the higher numbered end of this section as required. The number of pins times
two equals the rapid rinse time in minutes.
How To Change The Length Of Brine Tank Rell Time:
The second group of holes in the program wheel determines the length of time that your water conditioner will rell the brine tank (2 min.
per hole).
To change the length of rell time, move the two pins at the end of the second group of holes as required.
The regeneration cycle is complete when the outer micro-switch is tripped by the two pin set at the end of the brine tank rell section.
The program wheel, however, will continue to rotate until the inner micro-switch drops into the notch on the program wheel.
Regeneration Cycle
Program Setting Procedures

Page 8
CONTROL VALVES
Downow
Flow Diagrams
1) Service Position
Hard water enters unit at valve inlet and ows down
through the mineral in the mineral tank. Conditioned water
enters center tube through the bottom distributor, then
ows up through the center tube, around the piston, and
out the outlet of the valve.
2) Backwash Position
Hard water enters unit at valve inlet and ows through
the piston and down the center tube, through the bottom
distributor and up through the mineral, around the piston
and out the drain line.
Air Check
Brine Level
Salt Level
Brine Tank
Flow Control
Brine Valve
Resin Tank
Inlet
Outlet
Resin Level
Air Check
Brine Level
Salt Level
Brine Tank
Flow Control
Brine Valve
Resin Tank
Inlet
Outlet
Drain
Resin Level

Page 9
CONTROL VALVES
Downow
Flow Diagrams
3) Brine Position
Hard water enters unit at valve inlet - ows up into injector
housing and down through nozzle and orice to draw brine
from the brine tank - brine ows down the center tube
through bottom of tank, up through the mineral to top of
tank, around the piston and out the drain line.
4) Slow Rinse Position
Hard water enters unit at valve inlet - ows up into injector
housing and down through nozzle and orice - around the
piston - down through center tube and bottom distributor
- ows up the mineral, around piston and out through the
drain line.
Air Check
Brine Level
Salt Level
Brine Tank
Flow Control
Brine Valve
Resin Tank
Inlet
Outlet
Resin Level
Air Check
Brine Level
Salt Level
Brine Tank
Flow Control
Brine Valve
Resin Tank
Inlet
Outlet
Resin Level

Page 10
CONTROL VALVES
Water Conditioner
Flow Diagrams
5) Rapid Rinse
Hard water ows directly from inlet down through the
mineral into the bottom distributor and up through the
center tube - around the piston and out the drain line.
6) Brine Tank Fill Position
Hard water enters unit at valve inlet -ows up through the
injector housing and through the brine valve to ll brine
tank.
Air Check
Brine Level
Salt Level
Brine Tank
Flow Control
Brine Valve
Resin Tank
Inlet
Outlet
Resin Level
Air Check
Brine Level
Salt Level
Brine Tank
Flow Control
Brine Valve
Resin Tank
Inlet
Outlet
Resin Level

Page 11
CONTROL VALVES
Dimensional
Drawings

Page 12
CONTROL VALVES
Body Valve
Assembly
12
13
14
Filter Body
11
PN A-60101-01
NHWB Piston, Includes spacers, A B & C.
1
2
3
4
3
5
9
10
6
7
8
A
B
C

Page 13
CONTROL VALVES
Body Valve
Assembly Parts List
Item No. Quantity Part No. Description
1 1 A-14749 Body, Valve, AQT-275
2 1 A-11710 O-ring, Body, Riser Tube
3 2 A-11208 O-ring, Body, Base
4 1 A-12461-01 Adapter Base, 2.5" - 8
5 1 A-11710-01 O-ring, Adapter Base, Riser Tube
6 2 A-11224 Screw, Hex Hd
7 1 A-60699-00 DLFC Brass, F 3/4" X F 3/4", No Washer
8* 1 DLFC Button/Washer
9 1 A-60121-10 Seals & Spacers, Kit, AQT275 & AQT-290 Upper
10 1 A-60090-HF Piston HW, Assy, AQT-275 & AQT-290 Upper
11 1 A-60101-01 Piston NHWB, Assy, AQT-275
12 1 A-14805 Injector, Body Gasket
13 1 A-11893 Injector, Cover
14 2 A-15137 Screw, Hex, Filter Body
* DLFC Button / Washer Options
A-17943 DLFC Washer Flow 8 gpm
A-17944 DLFC Washer Flow 9 gpm
A-16529 DLFC Washer Flow 10 gpm
A-16735 DLFC Washer Flow 12 gpm
A-16736 DLFC Washer Flow 15 gpm
A-16528 DLFC Washer Flow 20 pm
A-16737 DLFC Washer Flow 25 gpm

Page 14
CONTROL VALVES
Control Drive
Assembly
1
678910 11
12
13
14
18
19
20
21
22
13
23
24
15
16
13
25
26
28
29
30 31
27
17
5
4
3
2
PN A-60160
Drive Cam Assy

Page 15
CONTROL VALVES
Item No. Quantity Part No. Description
1 1 A-07190F Transformer, 24V, 60Hz, for Mechanical and NX
2 1 A-13547 Strain Relief, Cord, Back Plate
3 2 A-10300 Screw, Hex, Back Plate-Timer
4 1 A-19691 Plug, Back Plate
5* 1 Timer, Mechanical
6 1 A-10302 Insulator, Micro Switch
7 2 A-10218 Micro Switch
8 2 A-14923 Screw, Mirco Switch
9-14 1 A60160 Drive Cam Assy, AQT-275, 285 & Upper 290
15 1 A-60219 Cover, Valve
16 1 A-60219-01 Cover, Panel, Polycarbonate
17 2 A-10231 Screw, Hex, Bracket Motor
18 1 A-10774 Braket, Motor
19 2 A-10157 Bushing
20 1 A-16044-3G Gear Drive, AQT-275, 285 & Upper 290
21 1 A-10158 Axis Drive, AQT-275, 285 & Upper 290
22 1 A-16043-3G Pinion Drive, AQT-275, 285 & Upper 290
23 1 A-10338 Roll Pin
24 3 A-10016S Screw, Motor Mounting
25 1 A-12777 Cam, Shut-o Valve
26 1 A-30018F Motor 24V, AQT-275, 285, 290 Up, 315, 390 Up & Low
27 3 A-02002 Screw
28 1 A-11826-01 Bracket, Brine Valve Side
29 1 A-18697 Back Plate
30 4 A-02115 Back Plate, Knob Screw
31 1 A-19048 Cable Gland Connector
Control Drive
Assembly Parts List

Page 16
CONTROL VALVES
160 Brine System
Assembly
14
15
13
12
11
10
12
34
17
23
22
21
20
19
1816
9
5
67
8
PN 1 - 23 -------- A-60029 --- Brine Valve, Short Stem, Less BLFC, 3/8” for AQT-275
PN 15 - 23 ------ A-60480 --- Inyector Body, 3/8” for AQT-275

Page 17
CONTROL VALVES
Item No. Quantity Part No. Description
1 1 A-10250 Retaining Ring
2 1 A-10249 Spring, Brine Valve
3 1 A-12552-02 Stem, Brine Valve
4 1 A-11749 Stem Guide, Brine Valve
5 1 A-10329 Fitting Nut, 3/8", Brass
6 1 A-10330 Fitting Sleeve
7 1 A-10332 Fitting Insert
8 1 A-56060 Screen, Brine
9 1 A-12748 Body, Brine Valve
10 1 A-11982 O-Ring
11 1 A-60020 End Plug, Brine Valve
12** 1 A-120XX BLFC, Button
13 1 A-13245 BLFC, Retainer
14 1 A-16508 Tube, Brine Valve
15 1 A-10328 Fitting, Elbow
16 1 A-11893 Injector Cover
17 2 A-14804 Screw, Injector Cover
18 1 A-10229 Injector Cover Gasket
19*** - 20*** 1 A-18272-X Injector Assy
21 1 A-10227 Screen, Injector
22 1 A-17776 Injector, Body
23 1 A-14805 Injector, Body Gasket
160 Brine System
Assembly Parts List
** BLFC Button Options
A-12094 BLFC Button - 0.25 gpm
A-12095 BLFC Button - 0.5 gpm
A-12097 BLFC Button - 1.0 gpm
*** Injectors
A-18272-0 Injector Assy #0, Red (12" and 13" Tank)
A-18272-1 Injector Assy #1, White (14" and 16" Tank)
A-18272-2 Injector Assy #2, Blue (18" Tank)
A-18272-3 Injector Assy #3, Yellow (20" Tank)

Page 18
CONTROL VALVES
Troubleshooting
Problems, Cause & Corrections
Problem Cause Correction
1) Softener fails to regenerate. A) Electrical service to unit has been
interrupted.
A) Assure permanent electrical service
(check fuse, plug, pull chain or switch).
B) Timer is defective. B) Replace timer.
C) Power failure. C) Reset time of day.
2) Hard water. A) By-pass valve is open. A) Close by-pass valve.
B) No salt in brine tank. B) Add salt to brine tank and maintain salt
level above water level.
C) Injector screen plugged. C) Clean injector screen.
D) Insucient water owing into brine
tank.
D) Check brine tank ll time and clean
brine line ow control if plugged.
E) Hot water tank hardness. E) Repeated ushing of the hot water tanks
required.
F) Leak at distributor tube. F) Make sure distributor tube is not
cracked. Check O-ring and tube pilot.
G) Internal Valve Leak. G) Replace seals and spacers and/or piston.
H) Service Adapter did not return to
service.
H) Check drive motor and switch.
3) Unit used too much salt. A) Improper salt setting. A) Check salt usage and salt setting.
B) Excessive water in brine tank. B) See problem No. 7.
4) Loss of water pressure. A) Iron buildup in line to water conditioner. A) Clean line to water.
B) Iron buildup in water conditioner. B) Clean control and add mineral cleaner
to mineral bed. Increase frequency of
regeneration.
C) Inlet of control plugged due to foreign
material broken loose from pipes by recent
work done on plumbing system.
C) Remove piston and clean control.
5) Loss of mineral through drain line. A) Air in water system. B) Assure that well system has proper
air eliminator control. Check for dry well
conditions.
B) improper size drain line ow control. B) Check for proper drain rate.
6) Iron in conditioned water. A) Fouled mineral bed. A) Check backwash, brine draw and
brine tank ll. Increase frequency of
regeneration. Increase backwash time.
7) Excessive water in brine tank. A) Plugged drain line ow control. A) Clean ow control.
B) Plugged injector system. B) Clean injector and screen.
C) Timer not cycling. C) Replace timer.
D) Foreign material in brine valve. D) Replace brine valve seat and clean valve.
E) Foreign material in brine line ow
control.
E) Clean brine line ow control.

Page 19
CONTROL VALVES
Problem Cause Correction
8) Softener fails to draw brine. A) Drain line ow control is plugged. A) Clean drain line ow control.
B) Injector is plugged. B) Clean injector.
C) Injector screen plugged. C) Clean screen.
D) Line pressure is too low. D) Increase line pressure to 20 P.S.I.
E) Internal control leak. E) Change seals, spacers and piston
assembly
F) Service adapter did not cycle. F) Check drive motor and switches.
9) Control cycle continuously. A) Misadjusted, broken or shorted switch. A) Determine if switch or timer is faulty and
replace it or replace complete power head.
10) Drain ows continuously. A) Valve is not programming correctly. A) Check timer program and positioning
of control. Replace power head assembly if
not positioned properly.
B) Foreign material in control. B) Remove power head assembly and
inspect bore. Remove foreign material
and check control in various regeneration
positions.
C) Internal control leak C) Replace seals and piston assembly.
Troubleshooting Continued
Problem, Cause & Corrections
General Service Hints for Meter Control
Problem: Softener delivers hard water
Reason: Reserve capacity has been exceeded.
Correction: Check salt dosage requirements and reset program wheel to provide additional reserve.
Reason: Program wheel is not rotating with meter output.
Correction: Pull cable out of meter cover and rotate manually. Program wheel must move without binding and clutch must give positive
"clicks" when program wheel strikes regeneration stop. If it does not, replace timer.
Reason: Meter is not measuring ow.
Correction: Check meter with meter checker.

Page 20
CONTROL VALVES
Wiring
Diagrams
TM Time Motor
VDM Valve Drive Motor
SW1 Timer Homing Switch
SW2 Timer Program Switch
SW3 Valve Homing Switch
SW4 Valve Step Switch
THCAM Timer Homing Cam
TPCAM Timer Program CAM
HCAM Valve Homing Cam
SCAM Valve Step Cam