AmeriWater 2850 SXT User guide

Dealkalizers

Fleck Model 2850 SXT Series

Operation and Service Manual

www.ameriwater.com • 800-535-5585

AmeriWater • 13345 Stop 8 Rd. • Dayton, OH 45414

PN: 98-0133A

PN: 98-0133A

Table of Contents Page

1.0 INTRODUCTION & WARNINGS 1

2.0 Fleck 2850 SXT System Specifications 2

2.1 Series 2850 SXT Dealkalizer

3.0 Series 2850 SXT Dealkalizer Operation Summary 3

3.1 Description 3

3.2 How It Works 3

3.3 Monitoring 3

4.0 Fleck 2850 SXT System Installation 4

4.1 Installation Requirements 4

4.2 Installation Instructions 5-6

5.0 Fleck 2850 SXT Control Operation and Programming 7

5.1 Fleck 2850 SXT Operation 7

5.2 Master Programming Options 8-9

5.3 Fleck 2850 SXT Master Programming Mode 9-14

5.4 AmeriWater Programming Tables For Fleck 2850 SXT 15

6.0 Fleck 2850 SXT Valve Flow Diagrams 16-18

7.0 Troubleshooting 19-21

8.0 Loading Diagrams, Parts List and Repair Diagrams 22

8.1 Loading diagrams 22

8.2 Power Head Assembly 23-24

8.3 Valve Assembly 25-26

8.4 2850 SXT Timer Assembly 27

8.5 Seal& Spacer Tools & Replacement Parts 28

8.6 Seal & Spacer Replacement 29-31

8.7 Pre-Treatment Lockout 32

PN: 98-0133A

1.0 INTRODUCTION & WARNINGS

Congratulations on your decision to use AmeriWater Healthcare Water Purification Equipment!
Federal law restricts this device to sale by or on the order of a physician for use as a water
purification device for hemodialysis.

Your Water Purification Equipment was thoroughly tested and in excellent condition when it was
shipped to you. However, because damage during shipment is possible, please unpack and carefully
inspect as soon as you receive it. Please notify AmeriWater immediately if any problems or shipping
damage are identified.

Please read the Operations Manual before using the system. Contact AmeriWater Customer
Service with any questions at 1-800-535-5585 Monday through Friday 8:00 a.m. to 5:00 p.m. eastern
standard time. For after hours emergencies call 1-800-535-5585 and follow the instructions on the
recorded message. Our on-call technician will return your call as soon as possible.

NOTE: This entire Operations Manual should be read before operating or servicing the device. This

Operations Manual should then be kept near the device and used as a reference and
troubleshooting guide.

WARNING: The selection of water treatment equipment for dialysis and the maintenance of

the equipment following its installation is the responsibility of the dialysis
physician. The product water should be tested periodically to verify that all
equipment is operating within specifications.

WARNING: DO NOT operate the water purification system without properly functioning

carbon filtration! Suspend dialysis treatments immediately if chlorine or
chloramines level after the polisher tank exceeds 0.1 mg/L!

WARNING: Dealkalizers are intended to be used as pretreatment for reverse osmosis or

deionization; and are not meant to be used as the primary means of water
purification.

NOTE: Dealkalizer tanks that are less than 18” in diameter are loaded with media at the factory.

Tanks that have a diameter of 18” and larger must be loaded onsite during installation.
Reference Section 8.0 for loading diagrams.

WARNING: No person should attempt to operate or service the system without prior

authorization, instruction, and training from AmeriWater and/or your medical
facility director!

P/N: 98-0133 Rev. A 1

2.0 Fleck 2850 SXT System Specifications

SERIES 2850 SXT FLECK DEALKALIZER

Resin

Brine Tank

Brine Tank

Shipping

Series 2850 SXT Fleck

Dealkalizer

2.1 Series 2850 SXT Dealkalizer

Features:

A full flow 1-1/2" valve with flow rates up to 49 GPM
The control valve utilizes the time proven piston-seal-spacer technology for durable, maintenance free

service.

All plastic construction will not corrode.
Programmable electronic controller is flexible for all conditions. All times can be set to the minute.
Single tank design regenerates at off hours to prevent pressure loss caused by dual metered systems

regenerating during dialysis treatment.

Included with the dealkalizer is a reverse osmosis lock-out switch.

Choose either a 1" or 1¼" header that includes a three true union ball valve by-pass, stainless steel liquid
filled outlet pressure gauge and sample port. The header comes pre-assembled and can be installed using
PVC schedule 80 piping. The header can be oriented from left to right flow or right to left flow.

Model

Number

0095047 31,500 14 14 x 65 18 x 40 388 289 Yes
0095048 40,500 18 16 x 65 24 x 50 835 388 Yes
0095049 49,500 22 18 x 65 24 x 50 835 452 No
0095050 67,500 30 21 x 62 24 x 50 835 565 No
0095051 85,500 38 24 x 65 24 x 50 835 731 No
0095052 94,500 42 24 x 72 24 x 50 835 731 No
* Max flow based on 4 GPM per cubic foot.
** Capacity depends on water analysis. Contact AmeriWater.

Grain**

Capacity

Max*

Flow Rate

Tank Size

in Inches

Size in
Inches

Capacity in

Lbs.

Weight in

Lbs.

HEADERS

Part Number Description

009591 1" Header By-Pass Assy.
009592 1 1/4" Header By-Pass Assy.
009593 3/4" Header By-Pass Assy.

Media

Installed

P/N: 98-0133 Rev. A 2

3.0 Series 7000 SXT Dealkalizer Operation Summary

3.1 DESCRIPTION

The Dealkalizer reduces the alkalinity in the feed water present as bicarbonate, carbonate,
or hydroxide to prevent high pH water from interfering with the performance of the carbon
filtration and the reverse osmosis system.

3.2 HOW IT WORKS:

Dealkalizers are basically anion water softeners (standard softeners use cation resin rather
than anion resin). The Dealkalizer reduces the alkalinity of the water through an ion
exchange process. The water passes over resin beads charged with chloride ions. The
resin beads attract the bicarbonate, carbonate, and hydroxide ions in the water and
exchange them with chloride ions. The supply of chloride ions is progressively depleted
until reaching a state of exhaustion. Regeneration of the dealkalizer replenishes the supply
of chloride ions and eliminates the previously removed bicarbonate, carbonate, and
hydroxide ions.

3.3 MONITORING:

1. Verify at the beginning of each day that the control head timer is set to the correct time
of day and record that this verification was done. This prevents inadvertent regeneration

during clinical operation, which would cause the RO to shut down via the interlock
mechanism.

2. Test and record the pH level of the water at the dealkalizer inlet and outlet to ensure that

the pH level is lower at outlet. This testing must be done at least once per day at the end of
the treatment day.

3. Monitor the brine tank daily to ensure that the salt level fills at least half of the tank. Salt

added to the brine tank must be clean pellet type, cube, or solar salt only. Do not use rock
salt.

4. High pH results at the dealkalizer outlet may indicate a lack of salt in the brine tank

resulting in insufficient regeneration, dealkalizer not going into or exiting regeneration, a
degeneration in the chemical properties of the resin, or an open bypass valve. Notify the
medical director if high pH results are obtained at the dealkalizer outlet.

P/N: 98-0133 Rev. A 3

4.0 Fleck 2850 SXT System Installation

4.1 Installation Requirements
Water Pressure

A minimum 20 pounds per square inch of inlet water pressure, is required for the regeneration
valve to effectively operate .

Electrical Facilities

An uninterrupted alternating current(A/C) supply is required. Make sure:

• Voltage supply is compatible with unit before installation.

• Current supply is always hot and cannot be turned off with another switch.

Location of Dealkalizer

Locate the Dealkalizer close to a clean working drain after the water softener and prior to

carbon tanks. Then, connect according to the local plumbing codes.

Bypass Valves

Always provide for installation of a bypass valve, if unit is not equipped with one.

Note: This product should be installed by qualified personnal.
Comply with all plumbing codes when installing this product.
Comply with all electrical codes when installing this product.

P/N: 98-0133 Rev. A 4

4.2 Installation Instructions

1. Pace the tank where you want to install the unit. Verify that the tank is level and on a firm
base, and that the tank label and control face are visible.

a) Always install devices as shown on the AmeriWater Piping and Instrumentation Drawing

(P&ID) provided with the water purification system. Failure to do so may adulterate the
marketing clearance on the device and void all AmeriWater warranties.

2. Connect all plumbing in accordance to your local plumbing codes. The dealkalizer should be
installed using the appropriate AmeriWater Bypass Header. This allows the device to be
bypassed for service. The dealkalizer must be installed prior to the carbon filters.

HEADERS

Part Number Description
009591 1” Header, By-Pass Assembly
009592 1¼” Header, By-Pass Assembly
009593 ¾” Header, By-Pass Assembly

3. Place in the header in the BYPASS position.
a) Turn on the main water supply.
b) Open a sample port downstream and let the water run a few minutes or until the system

is free of foreign material resulting from installation. Close the water tap when the water
runs clean.

4. Make plumbing connections to the Fleck 2850 SXT valve.

5. Plug the Fleck 2850 SXT control valve into a 120-volt GFI receptacle.

6. Place the header in the SERVICE position and cycle the valve to the BACKWASH position.
Let the water flow slowly into the mineral tank until the air is purged from the system.

7. Add water to the brine tank until the top of the air check is covered. Manually step the valve to
the BRINE DRAW position, and allow the valve to draw water from the brine tank until it stops.

NOTE: The air check will check at approximately the midpoint of the screened intake
area.

a) Manually step the valve to the BRINE REFILL position, and allow the valve to
return to SERVICE automatically.

b) With the valve in SERVICE, check that there is at least 1” of water above the grid in the

brine tank, if used.

c) Fill the brine tank with salt. Allow the control to run automatically. Setup is now
complete.

P/N: 98-0133 Rev. A 5

8. Pre-Treatment lock-out must be set-up as shown in drawing on page 32.

P/N: 98-0133 Rev. A 6

5.0 Fleck 2850 SXT Operation and Programming

5.1 Fleck 2850 SXT Operation

Features of the SXT:

• Power backup that continues to keep time and the passage of days for a minimum of 48 hours
in the event of a power failure. During a power outage, the control goes into a power saving
mode. It does not monitor water usage during a power failure, but it does store the volume
remaining at the time of power failure.

• Settings for both valve (basic system) and control type ( method used to trigger a
regeneration).

• Day-of-the Week controls.

• While in service, the display alternates between time of day, volume remaining or days to

regeneration.

• The service Icon flashes, if a regeneration cycle has been queued.

• A regeneration can be triggered immediately by pressing the Extra Cycle button for five

seconds. During regeneration, the user can force the control to advance to the next step
immediately by pressing the Extra Cycle button. Do not press the Extra Cycle button until it has
entered the next cycle.

• The parameter display shows the current Cycle Step (BW,BF,RR,etc) during regeneration, and
the data display counts down the time remaining for that cycle step. While the valve is
transferring to a new cycle step, the display will flash.

P/N: 98-0133 Rev. A 7

5.2 Master Programming Options

P/N: 98-0133 Rev. A 8

CAUTION: Before entering Master Programming, please contact AmeriWater customer
service.

5.3 Fleck 2850 SXT Master Programming

Fleck 2850 SXT Master Programming Mode

When the Master Programming Mode is entered, all available option setting displays

may be viewed and set as needed. Depending on current option settings, some
parameters cannot be viewed or set.

Setting the Time of Day

1. Press and hold either the Up or Down buttons until the programming icon replaces
the service icon and the parameter display reads TD.

2. Adjust the displayed time with the Up and Down buttons.

3. When the desired time is set, press the Extra Cycle button to resume normal
operation. The unit will also return to normal operation.

Entering Master Programming Mode

Set the Time of Day display to 12:01PM. Press the Extra Cycle button(to exit setting
Time of Day mode). Then press and hold the Up and Down buttons together until the
programming icon replaces the service icon and the Display Format screen appears.

P/N: 98-0133 Rev. A 9

Exiting Master Programming Mode

Press the Extra Cycle button to accept the displated settings and cycle to the next
parameter. Press the Extra Cycle button at the last parameter to save all settings and
return to normal operation. The control will automatically disregard any programming
changes and return to normal operation, if it is left in Master Programming mode for
5 minutes without any keypad input.

Queuing a Regeneration

1. Press the Extra Cycle button. The service icon will flash to indicate that a regeneration is
Queued.

2. To cancel a queued regeneration, press the Extra Cycle button.

Regenerating Immediately

Press and hold the Extra Cycle button for five seconds.

Day of the Week Control

This control regenerates the system on a weekly schedule. The schedule is defined in
Master Programming by setting each day to either “off” or “on”. The control will initiate
a regeneration cycle on days that have been set to “on” at the specified time.

Control Operation During Regeneration

During regeneration, the control displays a special regeneration display. In this display, the
Control shows the current step number the valve is advancing to, or has reached, and the
time remaining in that step. The step number that displays, flashes until the valve completes
driving to this regeneration step position. Once all regeneration steps are complete, the
valve returns to service and resumes normal operation.

Pressing the Extra Cycle button during a regeneration cycle, immediately advances the
valve to the next cycle step position and resumes normal step timing.

Control Operation During Programming

The control only enters the Programming Mode when valve is in service. While in Program
Mode, the control continues to operate normally, keeping all displays up to date. Control
programming is stored in memory permanently, eliminating the need for battery backup
power.

Control Operation During A Power Failure

The SXT includes integral backup. In the event of a power failure, the control shifts into
a power-saving mode. The display and motor shut down, but it continues to keep track of
time and day for a minimum of 48 hours.

The system configuration settings are stored in a non-volatile memory and are stored
indefinitely with or without line power. The Time of Day flashes when there has been a
a power failure. Press any button to stop the Time of Day from flashing.

P/N: 98-0133 Rev. A 10

If power fails while the unit is in regeneration, the control will save the current valve position

before it shuts down. When power is restored, the control will resume the regeneration
cycle from the point where power failed. Note that if power fails during a regeneration cycle,
the valve will remain in it’s current position until power is restored.

The control will not start a new regeneration cycle without line power. If the valve misses
a scheduled regeneration due to a power failure, it will queue a regeneration. Once power
Is restored, the control will initiate a regeneration cycle the next time that the Time of Day
equals the programmed regeneration time. Typically, this means that the valve will
regenerate one day after it was originally scheduled. If the treated water output is
important and power interruptions are expected, the system should be setup with a
sufficient reserve capacity to compensate for regeneration delays.

1. Display Format(Display Code DF)

This is the first screen that appears when entering Master Programming Mode. The

Display Format setting specifies the unit of measure that will be used for volume and how the

control will display the Time of Day. This option setting is identified by “DF” in the

Upper left hand corner of the screen. There are three possible settings:

2. Valve Type(Display Code VT)

Press the Extra Cycle button. Use this display to set the Valve Type. The Valve Type
setting specifies the type of cycle that the valve follows during regeneration.Note that
some valve types require that the valve be built with specific subcomponants. Ensure
the valve is configured properly before changing the Valve Type setting. This option
setting is identified by “VT” in the upper left hand corner of the screen. There are 5
possible settings:

P/N: 98-0133 Rev. A 11

3. Control Type(Display Code CT)

Press the Extra Cycle button. Use this display to set the Control Type. This specifies
how the control determines when to trigger a regeneration. This option setting is
identified by “CT” in the upper left hand corner of the screen. There are four possible
settings:

4. Regeneration Time(Display Code RT)

Press the Extra Cycle button. Use this display to set the Regeneration Time. This setting
specifies the time of day the control will initiate a delayed, manually queued, or day
override triggered regeneration. This option setting is identified by “RT” in the upper left
hand corner of the screen. Use the Up and Down buttons to adjust the value as needed.

5. Regeneration Cycle Step Times

Press the Extra Cycle button. Use this display to set the Regeneration Cycle Step Times.
The different regeneration cycles are listed in sequence based on the valve type selected
for the system, and are identified by an abbreviation in the upper left hand corner of the
screen. The abbreviations used are listed below. Each cycle step time can be set from 0
to 199 minutes, or “OFF”. Setting a cycle step to “OFF” will disable all of the following
steps. Setting a cycle step to 0 will cause the control to skip that step during regeneration,
but keeps the following steps available. Use the Up and Down buttons to adjust the value
as needed. Press the Extra Cycle button to accept the current setting and move to next
parameter.

P/N: 98-0133 Rev. A 12

6. Day of Week Settings

Press the Extra Cycle button. Use this display to set the regeneration schedule for a
system configured as a Day of Week control. The different days of the week are identified
as D1, D2, D3, D4, D5, D6, and D7 in the upper left hand corner of the display. Set the
value to “ON” to schedule a regeneration or “OFF” to skip regeneration for each day. Use
the Up and Down buttons to adjust the setting as needed. Press the Extra Cycle button to
accept the setting and move to next day. Note that the control requires at least one day to
be set to “ON”. If all 7 days are set to “OFF”, the unit will return to Day One until one or
more days are set to “ON”.

7. Current Day(Display Code CD)

Press the Extra Cycle button. Use this display to set the current day on systems
configured as Day of Week controls. This setting is identified by “CD” in the upper left
hand corner of the screen. Use the Up and Down button to select from Day 1 through
Day 7.

P/N: 98-0133 Rev. A 13

8. Day Override (Display Code DO)

Press the Extra Cycle button. Use this display to set the Day Override. This setting specifies the

maximum number of days between regeneration cycles. If the system is set to a timer-type

control, the day override setting determines how often the system will regenerate. A metered

system will regenerate regardless of usage if the days since last regeneration cycle equal the

day override setting. Setting the day override value to “OFF” disables this function. This option

setting is identified by “DO” in the upper left hand corner of the screen. Use the Up and Down

buttons to adjust the value as needed.

P/N: 98-0133 Rev. A 14

5.4 AmeriWater Programming Tables For Fleck 2850 SXT

Model Number

0095047

0095

048

0095

049

0095

050

0095

051

0095

052

Programming

Step

Desc

ription

Table 5.4.1 Dealkalizers Fleck 2850 SXT

Tank Size (Dia x

Height)

Cubic Feet Resin 3.5 4.5 5.5 7.5 9.5 10.5

Injector Size #3 #3 #4 #4 #5 #5

Refill Flow Control 0.25 0.25 0.50 0.50 1 1

Backwash Flow

Control

1 US / Metric GAL GAL GAL GAL GAL GAL
2 Down Flow St2B St2B St2B St2B St2B St2B
3 Days of Week dAY dAY dAY dAY dAY dAY
4 Regen Time Set Set Set Set Set Set
5 Current Day of

Week

6 Regen Cycles

1 Backwash 10MIN 10MIN 10MIN 10MIN 10MIN 10MIN
2 BrineDraw 60MIN 60MIN 60MIN 60MIN 60MIN 60MIN

nd

3 2
Backwash
4 Fast Rinse 10MIN 10MIN 10MIN 10MIN 10MIN 10MIN
5 Brine Refill* 23MIN 30MIN 18MIN 25MIN 16MIN 18MIN

7 **Regen Days

of Week

**Regen Days of Week, Set to Desired Days:

D1 = Sun, D2 = Mon, D3 = Tue, D4 = Wed, D5 = Thurs, D6 = Fri,

D7= Sat

14 x 65 16 x 65 18 x 65 21 x 62 24 x 65 24 x 72

2.4 3.5 4.5 6.0 8.0 8.0

D2,D4,D6-OND2,D4,D6-OND2,D4,D6-OND2,D4,D6-OND2,D4,D6-OND2,D4,D6-

5MIN 5MIN 5MIN 5MIN 5MIN 5MIN

ON

D1 = ON or OFF, D2 = ON or OFF, D3, D4, D5, D6, D7 – Set which
days you want to regenerate, see note **

Example: Tues Backwash = D3-ON

8 Electrical

Frequency

* 5 Lbs. per Cubic Foot.

LF 60 LF 60 LF 60 LF 60 LF 60 LF 60

**IMPORTANT NOTE: AmeriWater’s current day of week settings are factory set to

Monday, Wednesday and Friday. If you are regenerating every 7 days, you will need to enter
the master programming to set up for 7-day regeneration. Once in master programming
mode, select “tc” – time clock. This puts controller into the time clock mode. Press the extra
cycle button to accept “tc”. Scroll through programming mode till you reach “DO”- Day
Override appears. Press the Extra Cycle button. Use this display to set the Day Override.
This setting specifies the maximum number of days between regeneration cycles. If the
system is set to a timer-type control, the day override setting determines how often the
system will regenerate. Select number of days between regeneration that you need in day
override screen, this will tell the control how many days between regeneration cycles.
Accept change by pressing the extra cycle button, and exit Master programming mode.

P/N: 98-0133 Rev. A 15

6.0 Fleck 2850 Flow Diagrams

Hard water enters unit at valve inlet and flows down through the mineral in the mineral
tank. Conditioned water enters center tube through the bottom distributor, then flows up
through the center tube, around the piston, and out the outlet of the valve.

Figure 4.1 In Service Position

Hard water enters unit at valve inlet, flows through piston, down center tube, through
bottom distributor, and up through the mineral, around the piston and out the drain line.

Figure 4.2 Backwash Position

P/N: 98-0133 Rev. A 16

Hard water enters unit at valve inlet, flows up into injector housing and down through
nozzle and throat to draw brine from the brine tank, brine flows down through mineral
and enters the center tube through bottom distributor and out through the drain line.

Figure 4.3 Brine Position

Hard water enters unit at valve inlet, flows up into injector housing and down through
nozzle and throat, around the piston, down through mineral, enters center tube through
bottom distributor, flows up through center tube, around piston and out through drain line.

Figure 4.4 Slow Rinse Position

P/N: 98-0133 Rev. A 17

Hard water enters unit at valve inlet, flows directly from inlet down through mineral
into center tube bottom distributor and up through center tube, around piston and
out through the drain line.

Figure 4.5 Rapid Rinse Position

Hard water enters unit at valve inlet, flows up through the injector housing, through
the brine valve to refill the brine tank.

Figure 4.6 Brine Tank Refill Position

P/N: 98-0133 Rev. A 18

7.0 Troubleshooting

Problem Cause Correction

1. Water conditioner
fails to regenerate.

2. Hard Water A. By-pass valve is open. A. Close by-pass valve.

A. Electrical service to unit has
been interrupted.
B. Timer is defective B. Replace timer

C. Power failure C. Reset time of day

B. No salt is in brine tank. B. Add salt to brine tank and

C. Injector screen plugged. C. Clean injector screen.

A. Check fuse, plug, pull chain,
or switch.

maintain salt level above water
level.

3. Unit used too much
salt.

4. Loss of water
pressure.

5. Loss of mineral
through drain line.

D. Insufficient water flowing into
brine tank.

E. Hot water tank hardness. E. Repeated flushings of the hot
F. Leak at distributor tube. F. Make sure distributor tube is

G. Internal valve leak. G. Replace seals and spacers
A. Improper salt setting. A. Check salt usage and salt
B. Excessive water in brine tank. B. See problem 7.

A. Iron buildup in line to water
conditioner.

B. Iron buildup in water
conditioner.

C. Inlet of control plugged due to
foreign material broken loose from
pipes by recent work done on
plumbing system.
A. Air in water system A. Check for dry well condition.

B. Improperly sized drain line flow
control.

D. Check brine tank fill time and
clean brine line flow control, if
plugged

water tank is required.
not cracked. Check O-ring and

tube pilot.
and/or piston.
setting.

A. Clean line to water
conditioner.

B. Clean control and add mineral
cleaner to mineral bed. Increase
frequency of regeneration.
C. Remove piston and clean
control.

B. Check for proper drain rate.

P/N: 98-0133 Rev. A 19

Problem Cause Correction

6.Iron in conditioned
water.

7. Excessive water in
brine tank.

A. Fouled mineral bed. A. Check backwash, brine draw,

and brine tank fill. Increase
frequency of regeneration.
Increase backwash time.

A. Plugged drain line flow control. A. Check flow 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.

8. Softener fails to
draw brine.

9. Control cycles
continuously.

10. Drain flow
continuously.

E. Foreign material in brine line

E. Clean brine line flow control.

flow control.

A. Drain line flow control is

A. Clean drain line flow control.
plugged.
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

20psi.
E. Internal control leak. E. Change seals, spacers, and

piston assembly.

F. Service adapter did not cycle. F. Check drive motor and

switches.
A. Misadjusted, broken, or

shorted switch.

A. Determine if switch or timer is

faulty and replace it, or replace

complete power head.

A. Valve is not programming
correctly.

A. Check timer program and

positioning of control. Replace

power head assembly, if not

positioning 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.

Note: Error codes appear on the In Service Display.

P/N: 98-0133 Rev. A 20

Error
Code Error Type Cause

Reset and Recovery

0 Cam Sense

Error

1 Cycle Step

Error

The valve drive took
longer than 6 minutes
to advance to next
regeneration position.

The control
experienced an
unexpected cycle
input.

Unplug the unit and examine the
powerhead. Verify that all cams
switches are connected to the circuit
board and functioning properly. Verify
that the motor and drive train
components are in good condition and
assembled properly. Check the valve
and verify that the piston travels freely.
Replace/reassemble the various
components as necessary. Plug the unit
back in and observe it’s behavior. The
unit should cycle to the next valve
position and stop. If the error re-occurs,
unplug the unit and contact technical
support.

Unplug the unit and examine the
powerhead. Verify that all cams
switches are connected to the circuit
board and functioning properly. Enter
Master Programming mode and verify
that the valve type and system type are
set correctly with regard to the unit
itself. Step through a manual
regeneration and verify that it functions
correctly. If the error re-occurs, unplug
the unit and contact technical support.

2 Regen Failure The system has not

regenerated for more
than 99 days(or 7

Perform a Manual Regeneration to reset
the error code. Check that at least one

day is set “ON” for regeneration.
days, if the Control
Type has been set to
Day-of-Week).

3 Memory Error Control board memory

failure.

Perform a Master Reset and reconfigure

the system via Master Programming

mode. After reconfiguring the system,

set the valve through a manual

regeneration. If the error re-occurs,

unplug the unit and contact technical

support.

P/N: 98-0133 Rev. A 21

8.0 LOADING DIAGRAMS, PARTS LIST, AND REPAIR DIAGRAMS

8.1 Loading Diagrams

Note: Contact AmeriWater for loading diagrams for tanks with a diameter smaller than 18”

P/N: 98-0133 Rev. A 22

8.2 Power Head Assembly

P/N: 98-0133 Rev. A 23

Power Head Assembly Parts List

Item No. Quantity Part No. Description

1 ....................1 .................... 18697-13................................Backplate, Hinged

2 ....................1 .................... 11838 .....................................Power Cord, 6’ Fleck

3 ....................1 .................... 13547 .....................................Strain Relief, Cord

4 ....................1 .................... 40400 .....................................Harness, Drive,

Designer/Enviromental

5 ....................2 .................... 10231 .....................................Scrw, Slot Hex, 1/4-20 x 1/2

6 ....................2 .................... 10218 .....................................Switch, Micro

7 ....................1 .................... 10909 .....................................Pin, Connecting Rod Spring

8 ....................1 .................... 60160-15................................Drive Cam Assy, STF, Blue, 2900

9 ....................2 .................... 10338 .....................................Pin, Roll, 3/32 x 7/8

10 ..................2 .................... 14923 .....................................Screw, Pan HD Mach, 4-40 x 1

11 ..................1 .................... 41543 .....................................Motor, Drive, 115V/60HZ

12 ..................1 .................... 12777 .....................................Cam, Shut-off Valve

13 ..................1 .................... 61502-3200............................Timer Assy, 3200 Clock(NOT

WITH SXT CONTROLLER!) See Section 10.4 for SXT parts list.

14 ..................7 .................... 19800 .....................................Plug (Hole Size: Dia .140)

15 ..................4 .................... 19801 .....................................Plug, Dia .190

16 ..................2 .................... 10300 .....................................Screw, Hx Wash Head, 8 x 3/8

17 ..................1 .................... 15806 .....................................Hole Plug, Heyco

18 ..................1 .................... 16493 .....................................Plug, Hole, Heyco, .88 Dia

19 ..................1 .................... 40306 .....................................Plug, 1.50 Hole, Dome, Heyco

20 ..................2 .................... 19691 .....................................Plug, .750 Dia. Hole, Flush

21 ..................1 .................... 10712 .....................................Fitting, Brine Valve

22 ..................1 .................... 10269 .....................................Nut, Jam, 3/4-16

P/N: 98-0133 Rev. A 24

8.3 Valve Assembly

P/N: 98-0133 Rev. A 25

Valve Assembly Parts List
Item No. Quantity Part No. Description

1 ................... 1 .................... 16250-01 .................Valve Body, 2850, Machd

2 ................... 6 .................... 16101 ......................Seal, 2850

3 ................... 5 .................... 16638 ......................Spacer, 9500/2850

4 ................... 1 .................... 16092 ......................Piston, 2850

5 ................... 1 .................... 16436 ......................Piston, 2850

6 ................... 1 .................... 16395 ......................End Plug Assy, 2850

16395-01 .................End Plug Assy, 2850, Hot Water

7 ................... 1 .................... 14805 ......................Gasket, Injector Body, 1600/1700

8 ................... 1 .................... 16455 ......................O-ring, -347

*9 ................. 1 .................... 13577 ......................O-ring, -226

10 ................. 1 .................... 19606 ......................Piston, 2850, NHWBP

11 ................. 1 .................... 19300 ......................Rod, Piston, 2850

12 ................. 1 .................... 10909 ......................Pin, Link

13 ................. 1 .................... 19339 ......................Spacer, 2850, NHWBP

14 ................. 2 .................... 13386 ......................Screw, Hex Hd Mach, 1/4 - 20x1

15 ................. 1 .................... 16395-02 .................End Plug Assy/2850, NHWBP

16 ................. 1 .................... 19298-01 .................Piston Assy, 2850, NHWBP, O-ring

Not Shown ... 1 .................... 60366-xx .................DLFC 1” NPT (not shown) - specify size

Not Shown ... 1 .................... 17996 ......................Disperser, Air, Injector

Not Shown ... 1 .................... 19608-15 .................Disperser, Commercial 1 1/2” 2850/2900/9500

Optional Side Mount:

17 ................. 1 .................... 40316 ......................Adapter, Sidemount

18 ................. 1 .................... 40368 ......................O-ring, -160, Sidemount, Flange

19 ................. 1 .................... 40372 ......................O-ring, -142

20 ................. 1 .................... 40310 ......................Base, 2850/2900/3930, Rotating

21 ................. 7 .................... 19768 ......................Screw, Hex Hd, 3/8-16x1, Cap 18-8

22 ................. 7 .................... 40375 ......................Washer, Flat, 3/8, Type A, N-SERS

* Do not use O-ring if control is side mounted.

P/N: 98-0133 Rev. A 26

8.4 2850SXT Timer Assembly

2850SXT Timer Assembly Parts List

Item No. Quantity Part No. Description

1 ................... 1 .................... 13881 ......................Bracket, Hinge Timer

3 ................... 1 .................... 14265 ......................Clip, Spring

4 ................... 1 .................... 27172 ......................Stand-off, Timer, 2510SXT, 2750SXT

5 ................... 1 .................... 21363 ......................Screw, Hex HD, M4 X 12 MM

7 ................... 1 .................... 27168 ......................Bracket, Timer, 2510SE/2750SXT

8 ................... 3 .................... 13296 ......................Screw, Hex Washer, 6-20 X 1/2

9 ................... 1 .................... 42778 ......................Timer, SXT, 2510/2750, DF

9A ................ 1 .................... 19889 ......................Housing, Circuit Board

9B ................ 1 .................... 42196 ......................Circuit Board, SXT

9C ................ 1 .................... 42635-01 .................Cover, Front, SXT, Square

9D ................ 1 .................... 42637 ......................Label, Display, SXT

9E ................ 1 .................... 42864 ......................Wire Harness, SXT

P/N: 98-0133 Rev. A 27

8.5 Seal & Spacer Tools & Replacement Parts

Tools Used in the Seal and Spacer Replacement

Seal & Spacer Tools & Replacement Parts List

Description Part No.

Nut Driver ............................12664

Socket Adapter ....................16906

Socket 7/16” ........................12665

Seal Hook ...........................12874

Puller ...................................13061, 1500/2510/5600/4650

.............................................17623, 2850/9500

.............................................12682, 2900/3180

Stuffer ..................................11098, 1500/2510/2750

.............................................12763, 5600/9000/9100/4650

.............................................12683, 2100/3150

.............................................16516, 2850/9500

P/N: 98-0133 Rev. A 28

8.6 Seal & Spacer Replacement

P/N: 98-0133 Rev. A 29

NOTE: Photos shown are for reference only for replacing the seal and spacer. Actual
valve may be different.

1. Turn off water supply to valve. Next, cycle valve to backwash position, then to service.
Now remove electrical plug from outlet.

2. Remove control box cover.

3. Disconnect the brine line from the injector housing to the brine valve (if your unit has
timed brine tank fill).

4. Remove the two capscrews that hold the back plate to the valve.

5. Grasp the back plate on both sides and slowly pull end plug and piston assembly
out of the valve body (see Figure 5) and lay aside.

6. Remove the seal first using the wire hook
with the finger loop (see Figure 6).

7. The spacer tool (use only for removing the spacers) has three retractable pins,
retained by a rubber ring, at one end. They are retracted or pushed out by pulling or
pushing the center button the opposite end.

8. Insert the pin end of the spacer tool into the valve body with the pins retracted (button
pulled back). Push the tool tight against the spacer and push the button in, (seeFigure 7).
When the button is pushed in, the pins are pushed out to engage the 1/4 dia. holes in the
spacer. Remove the tool from the valve body. The spacer will be on the end. Pull the center
button back, the pins will be retracted and the spacer can be removed from the spacer tool.

9. Alternately remove the remaining seals and spacers in accordance with steps No. 6
and 8.

10. The last or end spacer does not have any holes for the pins of the spacer tool to
engage, therefore if the end spacer does not come out on the first try, try again using
the wire hook with the finger loop.

11. To replace seals, spacers and end ring, use special tool with the brass sleeve on one
end. This is a double-purpose tool (seeFigure 8). The male end acts as a pilot to
hold the spacers as they are pushed into the valve body and the brass female end is
used to insert the seals into the valve body.

12. To restuff a valve body, first take the end ring (the plastic or brass ring without holes),
then with your thumb press the button on the brass sleeve end. The large dia. inner
portion is now exposed (see Figure 8). Place the end ring on this pilot with the lip
on the end ring facing the tool. Push the tool into the valve body bore until it bottoms.
While the tool is in the valve body, take a seal and press it into the inside diameter of
the exposed brass female end.

P/N: 98-0133 Rev. A 30

13. Remove the tool, turn it end for end and insert it into the valve body bore. While
holding the large dia. of the tool, slide it all the way into the valve body bore until
it bottoms. Then push the center button to push the seal of the tool and leave it in
place in the valve body.

14. Remove the tool from the valve body and push the center on the brass female end to
expose the pilot on the opposite end. Place a spacer on this end and insert the spacer
and tool into the valve.

P/N: 98-0133 Rev. A 31

8.7 Pre-Treatment Lockout

P/N: 98-0133 Rev. A 32