STA-RITE SR-2700 Betriebsanleitung

10 RELAY MULTI-STAGE

BACKWASH CONTROL

PROGRAMMING GUIDE

SR-2700

SR-2700M

Sta-Rite Pool/Spa Group

293 Wright Street, Delavan, WI 53115

North America: 800-752-0183, FAX 800-582-2217

International: 262-728-5551, FAX: 262-728-4461, TELEX: ITT 4970245

www.sta-ritepool.com

Union City, TN • Delavan, WI • Mississauga, Ont. • Murrieta, CA

READ AND FOLLOW

SAFETY INSTRUCTIONS!

This is the safety alert symbol. When you see this sym-

bol on your system or in this manual, look for one of

the following signal words and be alert to the potential for

personal injury.

warns about hazards that will cause death, seri-

ous personal injury, or major property damage if ignored.

warns about hazards that can cause death, seri-

ous personal injury, or major property damage if ignored.

warns about hazards that will or can cause

minor personal injury or property damage if ignored.

NOTE indicates special instructions not related to hazards.

Carefully read and follow all safety instructions in this man-

ual and on equipment. Keep safety labels in good condition;

replace if missing or damaged.

Use equipment only in a pool installation.

Explosion hazard. This controller is not

explosion proof. Do not install or use in an explosive

atmosphere.

Hazardous voltage. Can shock, burn or kill.

This controller is normally connected to either 230 VAC or

115 VAC electrical power. Take all proper precautions for

the voltages involved. Disconnect power before servicing

or making electrical connections to the controller. Do not

remove the controller’s front panel if the supply power is

connected to the controller.

Chemical burn hazard if chemicals feed at no

flow. See Programming pH, Page 21, #8, for details.

CONTENTS

Safety ........................................................................................................2

Introduction...............................................................................................3

Initializing the SR-2700 .............................................................................3

Window Navigating ..................................................................................3

Selecting Items.....................................................................................3

Changing Items ....................................................................................3

Main Menu ...............................................................................................4

Readings ..............................................................................................4

Data.....................................................................................................4

MPS Timers..........................................................................................5

Information ..........................................................................................5

Manual ................................................................................................6

Password..............................................................................................6

Programming .......................................................................................6

Programming an MPS .....................................................................6

Selecting an MPS to Configure .......................................................6

Select Specific Command to Change ..............................................7

Change Control Command .............................................................7

Calibration ...........................................................................................7

Calibrating Flow .............................................................................7

Calibrating pH................................................................................7

Calibrating ORP .............................................................................8

Calibrating Calculated PPM............................................................8

Calibrating Temperature .................................................................9

General................................................................................................9

Data Setup....................................................................................10

Sensors .........................................................................................10

Communication ......................................................................10

Pager Test ...............................................................................11

Pager Numbers .......................................................................11

System ...............................................................................................11

MPS Wizard .................................................................................12

Backwash Configuration .........................................................12

Display .........................................................................................12

Display Setup..........................................................................12

Sensor...........................................................................................12

Security ........................................................................................13

Disable ..............................................................................................13

Reset Menu........................................................................................13

Advanced Programming ..........................................................................14

Selecting an MPS to Configure...........................................................14

Change Control Command ................................................................14

Troubleshooting ......................................................................................15

Appendix A: Menu Tree ..........................................................................16

Appendix B: Chemical Standards ............................................................17

Appendix C: Programming Command List...............................................18

Appendix D: Default Programming .........................................................19

Backwash...........................................................................................19

Programming pH (SR-2700 with Chemical Kit) ..................................19

Programming ORP (SR-2700 with Chemical Kit)................................19

Programming Temperature (SR-2700 with Chemical Kit) ...................20

Relay 9 – Heater ................................................................................20

Main Menu Flow Chart ...........................................................................21

System Menu/General Menu Flow Chart .................................................22

INTRODUCTION

The SR–2700 is a programmable controller for commercial

swimming pool filters which allows very detailed control

that can be modified by the operator. This programming

guide introduces and describes all the available windows

and menus of the SR–2700, from navigating and initializing

the windows to programming and customizing specifica-

tions. Please read carefully and take notice of all WARN-

INGS and Notices to ensure safe operation. If there are any

questions after reading through the guide, please call your

local STA-RITE dealer or call STA-RITE directly.

INITIALIZING THE SR–2700 (Figures 1 and 2)

When initializing the SR–2700, it will perform a brief check

of its internal system and set up the memory for operation.

The SR–2700 window will open a window (Figure 1) show-

ing the model type, the current status and all connected

modules (including communication, memory and remotes

(External RAM, modem and printer)). If these items are

detected they will be configured to operate; if not, they will

be disabled.

NOTE: If a module was previously installed but is not

detected, the window will display the message: “WARN-

ING: External ram not detected”.

Once this check is complete, the window will then open to

the STA-RITE Information window (Figure 2). Touch this

window anywhere with the stylus to continue to the main

menu. If not touched, the Controller will automatically

cycle to the Readings window.

At the top of the face of the controller, above the digital

window, you will see two groups of red numbers. These

numbers change every two seconds between a)Influent and

Effluent Pressure and b)pH and ORP. The appropriate mea-

surement is indicated by an LED light.

WINDOW NAVIGATION

This section introduces “Window Navigation”, with guide-

lines to allow customizing window display options, entering

values and programming.

The SR–2700 has a Graphical User Interface (GUI) similar

to “Windows”, but with only one window displayed at a

time. The user interface is a touch-panel display, which

gives access to most of the controller’s functions and set-

tings through a series of menus, sub-menus and buttons.

NOTE: In this text guide, system menus will be indicated in

BOLD CAPITAL LETTERS and sub-menus will be in Bold

Regular Letters. On-window buttons will be displayed in

Bold Italic Letters.

Operate the SR–2700 touch-panel display with a plastic sty-

lus (or other non-marking instrument). When operating the

touch-panel display, hold the stylus as you would an ordi-

nary pen, being careful not to touch the display with your

fingers. Do not exert pressure when using the stylus, as the

panel will respond to a light touch.

NOTE: Using a pen or other sharp object could damage the

display. Do not exert pressure; the display will respond to a

light touch from the stylus. Excessive pressure could dam-

age the display and will void the warranty. To keep display

free of fingerprints, avoid touching it with your hands.

Selecting Items

There are three ways to select menu items on the interface.

1. Touch the menu item directly on the window. The

selected item will open another window to offer more

options.

2. Directly touch the on-window Buttons. The selected

button will open another window, which offers more

options, or will toggle to a different state.

3. Use the directional arrow keys to navigate through the

items (not all windows have arrows). The arrow keys

will usually highlight the selected item. Some windows

have directional arrow keys on the top of the window

which will allow you to change windows.

NOTE: Use the small xon the top right-hand corner of

the window to back out to the previous window.

Changing Items (Figure 3)

NOTE: There is no ‘undo’ function. Once a change is made,

the only way to change it back is to re-enter the original

value.

Figure 1

Model SR–2700R6 11-13-01

Backwash CL

Initializing

Ext RAM Detected

High speed modem detected

Printer installed

STA-RITE Backwash Control System

293 S. Wright Street

Delavan, WI 53115

(800)752-0183

F(800)582-2217

Figure 2

Press to Toggle Window d I 

Enter Value (#.##) x

- > -

Q W E R T Y U I O P < & 7 8 9

A S D F G H J K L : - = 4 5 6

Z X C V B N M , . / # 1 2 3

Cancel Space Enter 0 .

Figure 3

The SR–2700 allows you to make changes or customize the

windows. There are two methods for entering or changing

items on the interface.

The Change button will 1) cause a toggle-function menu to

appear or 2) cause a keyboard to appear.

1) If the item to be changed has only a couple of choices,

touch the Change button and toggle through the choic-

es. Directly touch your choices or use the directional

arrows (depending on the window you are viewing) to

select the item intended for change. After the item is

changed touch either the OK button or the xin the

upper right corner of the window to exit (use xto exit

when there is no OK button).

2) If the item to be changed needs to be entered or has

many choices, press Change and a full alphanumeric

keyboard window, with capital letters, numbers and

special characters, will appear. Touch the characters

needed for the change and then touch Enter. The format

for the value to be entered will be on the top line.

Touching Enter will change the value unless the format

is incorrect. If you touch Cancel, you will go back to the

preceding window and the value will not be changed.

NOTE: Touching the top line of this window gives

access to international characters.

MAIN MENU (Figure 4)

This section introduces the MAIN MENU and Sub-Menu

items, along with the functions available. Select the desired

sub-menu by touching it with the stylus. Other sub-menus

will become available when the selected window appears.

(Appendix A has a listing of the menu tree; Pages 23 and 24

have menu flow charts.)

Readings (Figure 5)

The READINGS Window displays an overview of the status

and on times for the sensors showing pressure, pH, ORP

and temperature.

An ‘x’ in the box after Flow 1, 2, or 3 indicates flow; an

empty box indicates no flow. The window’s mid-section

displays the sensor measurement information, which may

be arranged in any order.

When the flow switches are enabled in the programming,

they allow chemical feed while there is flow, but prevent

feed at no flow. Disable the flow switch in the program-

ming to allow chemical feed at no flow.

The Flow Window displays the following:

ITEM: Sensor names.

MEAS: Current measurement reading. The Overfeed box

follows this number. An ‘o’ in any box indicates that that

relay is in overfeed (see Page 9) and will not turn ON until

the overfeed timer is cleared.

SET: Sensor set point.

ON TODAY: Total time the MPS has been on since the last

overfeed clearing time.

RLY: The Relay number.

– more – Accesses FLOW INFORMATION window. See

the section Calibrating Flow (Page 7) in this manual for an

explanation of the Flow Information window.

BACKWASH CYCLE ON: This information is accessed by

pressing –Backwash Info- on the Reading Window. This

window shows various backwash information.

Data (Figure 6)

The DATA Window displays recorded data (history) from all

sensors. The sensor readings may be viewed on the front

panel of the controller or downloaded into a PC to print

through NotePad or Excel. The data recording time intervals

may be set by the operator. The range is from one second

(minimum) to eighteen hours (maximum). (See the GENER-

AL menu/Data Setup sub-menu for more information.) In

the absence of power, the SR–2700 retains all recorded

data and program values for up to ten years.

FLOW1⌧FLOW2FLOW3x

ITEM Meas Set ON Today RLY

P1 6.5

P2 0.0

dP12 0.00.0 00:00:00 7

pH1 7.527.50 00:00:00 6

ORP1 1009.99 00:00:00 2

Temp1 76.8a76.8 00:00:00 9

-more- -Backwash Info-

Figure 5

SN10102 STA-RITE

Thursday

10:38:57

Readings Manual General

Data Password System

Timers Programming

Info Calibration Disable

Figure 4

mm/dd hh:mm pH ORP P1 P2 x

09/10 12:00 7.35 74 0.0 5.4

09/10 08:00 7.42 749 0 0 0 0

09/10 04:00 7.3 751 0.0 0.0

00/00 00:00 000 000 0.0 0.0

DD DU PD PU 

Figure 6

The Data Window can be navigated using the buttons at

the bottom of the window. The data down DD or data up

DU buttons will scroll up or down to the beginning of the

previous or next day. The page down PD and page up PU

buttons will go to the beginning of the previous or next

window. The up and down arrows move the data one line

at a time. To see additional information on the same line,

use the left and right arrows.

The Data Window displays the following:

mm/dd hh:mm: The date and time that the recorded sensor

data is displayed.

Sensor readings: The readings for pH, ORP, PPM, tempera-

ture, high pressure, and low pressure are displayed through

the mid-section of the window. To view more readings use

directional arrows.

MPS Timers (Figure 7)

The TIMER window displays the status of the 36 Mini

Programs (MPSs) used to determine which relays, alarms

and pagers should be ON or OFF. Each MPS may be con-

figured for a specific type of control. (Setting up the pro-

gramming for each MPS is found under PROGRAMMING,

Select MPS Module.)

The behavior of the MPS Timers may differ one from anoth-

er depending on the control type for the MPS:

In all cases, the timer will count up when the MPS is OFF.

The timer for the chemical control will count down when

the MPS is ON. (The chemical control computes the

amount of chemical feed time and loads the timer.)

The timer for the heater control will count up when the

MPS is ON.

The MPSs can be viewed in groups of four at a time. Touch

NEXT 4 on the bottom of the window to access the next

four or touch PREV 4 to access the previous four. The

Timers window displays the following:

RLY#: The relay number.

TOTAL: This is the cumulative relay ON time since this

timer was last reset.

ON-TODAY: The current run-time since the last overfeed

clearing.

TIMER: The currently operating timer.

ON/OFF BOX: The current status of the relay is revealed

after the timer. (A box with an ‘x’ in it is ON; an empty box

is OFF.)

CNT: The count is the number of times the relay has turned

ON since it was last cleared.

DAY COUNT: Not used.

Information (Figure 8)

The INFORMATION Window displays important details

regarding the status of the SR–2700, listed as follows:

Software Version: The current software revision number and

the date the software was updated.

Power ON Cycles: Displays how many times the power has

been turned ON or OFF.

Total Hours ON: Displays the total hours the SR–2700 has

been ON.

Serial Number: The unique number for this controller. Enter

this number on the warranty registration card and return it

to STA-RITE immediately.

MPS Delay: When the SR–2700 is turned ON, the default

delay is set at thirty (30 seconds delay). To set the start

delay of an MPS, set the MPS Delay for the number of sec-

onds delay which you require. Set the power ON delay in

the GENERAL menu.

Relays ON: The number of relays ON.

Events: If this number is greater then 10 contact your dealer.

Password Forget: If any password placed on the controller is

forgotten, the number displayed here is required for the

code to clear all passwords. To get the code, please fax the

following information to STA-RITE: Password Forget

Number, Serial Number and Model Number. STA-RITE will

then give you the code to enter in the PASSWORD Menu.

NOTE: The code is a one-time entry and the code will be

different for each controller.

Faults/Warnings: The following faults may appear; if they

persist when power is cycled (except for No System Faults),

contact your dealer:

No System Faults: No faults in system (this is as it should be!)

Memory Checksum: Memory Test

Programming Error: Check the setup file.

Battery Low: Replace battery.

Display: Display not working properly.

Main Memory: Check the main programming – it indicates

that the software was upgraded incorrectly.

RLY# TOTAL ON-TODAY TIMER CNT x

1. 0000:12 00:11:56 00:00:0012

Day Count: 2

2. 0001:11 01:01:55 00:00:00196

Day Count: 5

3. 0004:46 04:49:32 00:00:00915

Day Count: 1

4. 0000:00 00:00:00 00:00:000

PREV 4 OK NEXT 4

Figure 7

Ver: SR–2700 R-3 (6/1/01) x

1. Power ON Cycles 116

2. Total Hours ON 50

3. Serial Number 10299

4. Languages:English/Spanish

5. MPS Delay

6. Relays ON 4

7. Events 0

8. Password Forget 0

9. FAULT: NO SYSTEM FAULTS

10.

11. Model: SR–2700

Figure 8

Line 10 is left open for Future Expansion.

Model: The SR–2700 is a backwash controller only; the

SR–2700M is the same as the 2700 with the addition of a

modem. For pH and ORP control capabilities, purchase a

Chemical Kit separately and install it with your SR–2700 or

SR–2700M.

Manual (Figures 9 and 10)

MANUAL offers the option to manually toggle the MPSs on

and off; however, you must provide for it when program-

ming the MPSs. Touching MANUAL opens the Select MPS

Module window. Selecting the desired MPS module group

will open the Manually Toggle MPS window which will

allow you to manually turn an MPS ON or OFF by touching

the box to right of the MPS code (for example, RLY02). If

the MPS is ON, it will turn OFF; if it is OFF, it will turn ON.

The length of time the MPS will stay ON is determined by

the manual MPS time entry in the Programming section. If it

is turning OFF, it will be OFF for the programmed OFF

time. The MPS will then go back to normal automatic con-

trol after the OFF time expires.

Password

Touch PASSWORD to open the keyboard window and type

in the password. See Security section for password levels.

When the security features are enabled, a number other

than ‘0’ will be displayed next to the xin the upper right

corner of the window. You must then enter your password

before you can access the controller for servicing and

reconfiguration.

Programming

The SR–2700 allows for complete custom programming.

The PROGRAMMING window accesses the configuring

and programming parameters available.

There are two types of programming: Basic, (discussed in this

section), and Advanced, (discussed later in this manual). The

controller may be programmed through the touch-panel dis-

play, by using a computer connected by modem, or through

the serial port with an RS232 cable. The MPS WIZARD and

factory default settings start the process, but ultimately it may

need adjusting or Advanced programming. There are a total

of 36 mini programs (MPSs) making up the main program.

Mini programs can be of the following types:

RELAY: Up to ten MPSs directly controlling the relays.

Relays not installed can be used as expansion MPSs.

SOFT RELAYS: The soft relays are software relays, not mechan-

ical relays. Up to 14 soft relays or expansion relays are used to

increase the capabilities of the mechanical relays when more

detailed control is required. You can have from 1 to 14 soft

relays, depending on how many relays are actually installed.

ALARMS: There are four alarms available. The first one con-

trols the red alarm Light Emitting Diode (LED) on the con-

trol panel. Any relay can be used for alarm purposes, but

only this one controls the alarm LED.

PAGERS: The pager MPSs dial the appropriate pager(s).

There are eight pager MPSs, one for each pager number.

To select the programming method, go to System/Prog Mode

and press change to toggle between Basic and Advanced.

LEAVE IT IN BASIC unless you are trained in Advanced; this

manual does not cover Advanced Programming.

Programming an MPS

To customize the program, you must change the commands

of the MPSs from the default values to your requirements.

The SR–2700 evaluates each MPS every second by calculat-

ing the list of commands that make up each MPS. The MPSs

will turn on, turn off, or perform other actions as the result

of these calculations. The MPSs can also skip commands,

depending on conditions specified in the MPS’s program-

ming. This allows multiple set points, shared heaters, super-

chlorination and many other combinations. In the MPS pro-

gramming this is called ‘Sequences’ and the sequence infor-

mation must be specified on each command.

Selecting an MPS To Configure

(Figures 11 and 12)

The first step to Programming is to select which MPS out of

the thirty-six MPSs available need to have commands pro-

grammed. The opening window, Select MPS Module

(Figure 11), displays MPSs in groups of four. Touch the

number group directly on the window to open the Select

MPS to Configure window (Figure 12).

Select MPS Module x

Relays 1-4 5-8 9-10

Soft 1-2 3-6 7-10 11-14

Alarms 1-4

Pagers 1-4 5-8

Figure 9

Manually Toggle MPS x

RLY01 Backwash Filters

RLY02 Backwash Filters

RLY03 Backwash Filters

RLY04 Backwash Filters

PREV OK NEXT 4

Figure 10

Select MPS Module x

Relays 1-4 5-8 9-10

Soft 1-2 3-6 7-10 11-14

Alarms 1-4

Pagers 1-4 5-8

Figure 11

Select A Specific Command to Change (Figure 13)

Use the ‘>’ to select the command you want to change:

Selecting ‘Enabled/Disabled’ will allow you to toggle

between the two.

Selecting ‘Initial Delay’ or ‘Time ON’ will allow you to access

the keyboard to enter the change (see the example at the top

of the window). Touch Enter when you have made the

change. Other commands can be changed in the same way.

Change Control Command

See “Advanced Programming”, Page 13.

Calibration (Figure 14)

Always balance the pool to the desired pH, ORP and PPM

levels by hand before calibrating any sensors. Touch CALI-

BRATION from the MAIN menu to open the ‘Select to

Calibrate’ window with the sensor listings. Touch on the

desired sensor to open its calibration window.

Calibrating Flow (Figure 15)

The SR–2700 is compatible with digital flow (square wave)

sensors, but not with analog type (sine wave). Digital flow

sensors improve accuracy, especially when measuring low

flows. The sensor sends out digital pulses to be converted to

engineering units read by the controller.

The flow rate is determined by counting the number of

pulses per unit of time. The SR–2700 uses the equation,

FLOW in GPM = 6X/K x GPM, where:

X = the number of Pulses in 10 seconds; and

K = Pulses/Gallon or Pulses/Liter

NOTE: K is the sensor manufacturer’s preset parameter for

the sensor and determines the sensor’s characteristics.

•The controller will not convert the flow between English

and metric units; the correct adjustment to the K factor

must be made to suit the units.

•The calibrated pulses per gallon are determined by the

actual inside diameter of the pipe it was installed on.

•Consult the sensor manufacturer’s guide for more infor-

mation on calculations.

NOTE: The lower the K factor, the higher the flow will be.

To calibrate the Digital Flow sensor, touch the on-window

button Change and enter the flow constant (K factor) on the

keyboard; touch Enter.

Return to the Calibrate Flow menu. The change will be record-

ed along with the sensor flow reading at the time the calibra-

tion was made. The display is updated every 10 seconds.

NOTE: The most common problems with digital flow sen-

sors are as follows:

•Astuck internal paddle wheel. If this is the problem,

switch to a sensor less likely to get stuck or evaluate the

installation location and make sure to use filtered water.

•Athree-wire sensor is wired incorrectly. Consult the

sensor manufacturer’s guide for more information.

The Calibrate Flow window displays the following items:

Name/Flow 1-3: Column listing of flow readings updated

every ten seconds.

K p/g: The K factor determined by counting the frequency

of pulses per gallon or pulses per liter.

Flow: The flow reading determined by counting the number

of pulses per ten (10) seconds.

Calibrating pH (Figure 16)

NOTE: A Chemical Kit must be purchased separately and

installed for this calibration.

Select MPS to Configure x x

RLY01 Backwash Filters

RLY02 Backwash Filters

RLY03 Backwash Filters

RLY04 Backwash Filters

PREV 4 OK NEXT 4

Figure 12

FILTER Bank Setup Relay#1 x x

>Enabled/Disabled: DISABLED

Initial Delay : 00:00:30

Time ON : 00:04:00

NOTE: The delay needs to be long enough to account

for the heater cool down or previous filters.

CHANGE 

Figure 13

Calibrate Flow x

Name K p/g Flow gpm

Flow 1: 5734.0 0.0 

Flow 2: 6451.0 0.0

Flow3: 6143.0 0.0 

Flow updates at 10 seconds!

Enter the Flow Constant,

K = Pulses/Gallon or Pulses/Liter

CHANGE

Figure 15

Select to Calibrate x

pH ORP PPM T

Flow Pressure

Figure 14

NOTICE: IF THE pH IS BELOW 7.4 OR ABOVE 7.6 THE

ORP READINGS WILL BE SIGNIFICANTLY AFFECTED. If

the pH is high, the ORP will not go up as fast as it should

when chlorine is added. This can lead to chlorine overfeed-

ing, which leads to high PPM readings. Be sure to set the

overfeeds (when you are programming) to prevent this. If

the pH is low, the chlorine will be very active with a high

ORP reading and a low PPM measurement.

Measure the pool water pH using a standard test kit. To cal-

ibrate the pH sensor go to the pH Calibration window,

touch the window under Hand Measurement and enter the

current hand calibration measurement values on the key-

board, based on the example at the top of the window.

Touch Enter.

The window will return to the Calibrate pH1 menu display-

ing the value entered; touch OK. The change will be

recorded along with the sensor reading at the time the cali-

bration was made. Touching Reset will clear the calibration

on this sensor.

The pH Calibration window displays the following mea-

surements:

Delta: pH factor used to determine whether or not the

probe is defective. Check probe if reading exceeds 128.

Hand Measure: The manual pH measurement to be

entered.

Current Measurement: The current calibrated sensor

measurement.

Calibrating ORP (Figure 17)

NOTE: A Chemical Kit must be purchased separately and

installed for this calibration.

For the ORP calibration, measure the PPM first using a stan-

dard test kit. Other factors affecting ORP are TDS, cryonic

acid, and ozone.

Make small changes in the calibration. Stop when the chlo-

rine is at the right value. The pH MUST remain constant for

this procedure.

To calibrate the ORP sensor:

1. Touch the window below Hand Measurement and enter

the current calibration measurement on the keyboard.

2. Touch Enter.

3. The window will return to the Calibrate ORP menu (dis-

playing the entered measurement).

4. Touch OK. The change will be recorded along with the

sensor reading at the time the calibration was made.

NOTE: Touch Reset to clear the calibration on this sensor.

Example: The default set point is 700, the measured PPM is

0.5 (1.5 PPM is desired), and the current display shows a

measurement of 710 mV. Using 10-15 mV per PPM as a

rule of thumb, the ORP should be calibrated down 30 mV

below the set point since the PPM is 1 PPM low.

The ORP calibration window displays the following

measurements:

Delta: pH factor used to determine whether or not the

probe is defective. Check probe if reading exceeds 128.

Hand Measure: The manual ORP measurement to be entered.

pH: The pH reading taken during the last calibration.

Current Measurement: The current sensor measurement.

NOTICE: The pH must be between 7.4 and 7.6 (see

“Calibrating pH”, above) when calibrating the ORP Sensor.

If the pH is outside these limits when calibrating the ORP

sensor, the chlorine feed, ORP reading , and PPM measure-

ment may all be incorrect.

Calibrating Calculated PPM (Figure 18)

NOTE: The PPM is automatically calculated from the

ORP and pH readings, so a Chemical Kit is required for

the calibration.

Measure the PPM using a standard test kit. If the PPM mea-

surement by test kit is lower than desired, decrease the cali-

bration. If the measurement by test kit is higher than

desired, increase the calibration.

From the PPM calibration window, touch the +or -buttons

at the bottom of the window to increase or decrease the

PPM reading. When the reading is far away from the manu-

al measurement use the ++or - - buttons to change the

reading quickly.

Calibrate pH1 x

Delta Hand Measure

0.00 6.89

Current Measurement: 7.22

Reset OK

Figure 16

Calibrate ORP x

Delta Hand Measurement pH

0700 7.5

Calibrated Reading: 645

Reset OK

Figure 17

Cal Calculated PPM1 x

PPM 1.48

ORP 710

PH 7.49

-- - + ++ Reset OK

Figure 18

The PPM calibration window displays the following mea-

surements:

PPM: The PPM measurement to be adjusted with correct

manual measurement.

ORP: The current ORP measurement used as a reference

point for calculated PPM.

pH: The current pH measurement used as a reference point

for calculated PPM.

Calibrating Temperature (Figure 19)

The Temperature Calibration window displays the follow-

ing items:

Hand Measure: The manual temperature measurement to

be entered.

Current Measurement: The current hand measurement.

Calibrate the Temperature Sensor as follows:

1. Touch the window under Measure;

2. Enter the current temperature (by thermometer)

3. Touch Enter.

4. Return to the Calibrate Temperature menu and touch

OK. The change will be recorded along with the sensor

reading at the time the calibration was made.

NOTE: Touch Reset to clear the calibration on this sensor.

NOTE: In general the temperature sensor is very accurate.

Note, however, that the temperature error may vary depend-

ing on the time of day and the location of the sensor.

If the un-calibrated temperature reading is more than a cou-

ple of degrees off from the temperature by thermometer,

there is a problem. Common problems with temperature

sensors are listed below:

1. The Sensor may need to be moved and reinstalled.

2. The sensor may be damaged. If so, replace it.

•The temperature sensor should have a resistance of

10,000 ohms at room temperature (75° F).

•If water gets inside the sensor it will not work proper-

ly; inspect the cable for damage.

General (Figure 20)

The GENERAL setup window accesses the settings for the

Global Alarm & Delay, Overfeed Clear Time, Filter, and

Power ON Delay, plus a variety of buttons across the bot-

tom of the window to offer more features all described in

the following pages.

Use the directional arrows to highlight the settings. Touch the

Change button to offer choices or to access keyboard input.

These settings must be entered correctly, as they are impor-

tant for calculating correct readings and troubleshooting.

Global Alarm %: Sets the percentage above or below the

set point that will trip the alarm. This can be disabled in the

programming for each specific relay.

Global Alarm Delay: The length of time the alarm waits

before activating the Alarm LED and pager. The MPS

Wizard uses this value as a default value.

Overfeed Clear Time 1: When the current time matches

this time, the overfeed timers will be cleared and any

appropriate data saved.

Overfeed Clear Time 2: When the current time matches

this time, the overfeed timers will be cleared and any

appropriate data will be saved.

NOTE: Set both Overfeed Clear times the same to clear the

overfeeds just once a day.

Filter: This value directly controls the digital filter’s time

constant. The larger the filter value, the slower the con-

troller’s response time. The smaller the filter value, the

faster the controller’s response time.

Power ON Delay: The time lag between turning the power

ON and having any relays turn ON. If it takes a long time

for the sensors to adjust, increase the delay time.

Data Setup – Press the Data Setup button to change the

Time Spacing on the keyboard window. Press Sensors and

the Sensors Setup menu appears. Sensors can be turned ON

or OFF by selecting the desired sensor with the up and

down arrows on the right of the window and pressing

Change at the bottom of the Data Setup window.

Calibrate Temperature x

Hand Measure

78.7

Current Measurement: 72.3

Reset OK

Figure 19

General Setup x

Global Alarm % :25

Global Alarm Delay :600 

Overfeed Clear Time 1 00:00:00

Overfeed Clear Time 2 00:00:00

Filter (Higher is less) :15000 

Power ON Delay 00:00:00

DATA SETUP Modem CHANGE

Figure 20

Data Setup (Figure 21)

The Data Setup button located in the lower left corner of

the General Setup window accesses the following list of

items, plus the Sensors button (all described in the follow-

ing pages). Use directional arrows to highlight the setting

and touch the Change button to access keyboard input.

Time Spacing: The amount of time between recordings. The

range is from two seconds to eighteen hours.

NOTE: This is the only value in this window which can be

changed.

% Used: The percentage of the data memory filled.

Number of Days: This number is automatically changed

based on the time spacing. When the time spacing is

changed the SR–2700 will calculate how many days of data

the memory can hold and display it here.

Line: The line the controller will record next. The SR–2700

has 3300 lines. When the data is filled up the SR–2700 will

delete the oldest line to make room for the new data.

Sensors (Figure 22)

Touching the Sensors button, located in the lower left corner

of the Data Setup window, will open the Sensor to Display

window. This window allows the selection of sensor measure-

ments to be displayed when viewing the data. The selections

have no effect on the data being recorded, only the data to be

displayed. Use the directional arrows to highlight the sensor

checkbox for each sensor. Touching the Change button in the

lower right hand corner of the window selects, or unselects,

the sensor box highlighted for each module.

Communication (Figures 23 and 24)

Access the Communication Setup Menu from the General

Setup Menu by pressing the Modem button at the bottom of

the window. This window contains important data details

listed below. It also has multiple windows accessible by a

variety of buttons, which offer more features.

When setting up ‘Communication’ for the first time, enter

the following settings. Use directional arrows to highlight

the settings and touch the Change button to toggle through

choices or to access the keyboard input window.

Rings to answer on: The number of rings required before

the SR–2700 will answer the call. The answering range is

from one to nine rings (1-9); 0 disables answering.

Long Hang-up Time: Specifies the length of time that the

SR–2700 will ignore incoming calls when AcuCOM uses

the ‘Long Hang-up’ command. This command allows

AcuCOM to call other controllers on the same line.

Sync Bytes: These must match the sync bytes in AcuCOM

for communication to be established. Since AcuCOM is a

freely distributed software package, without this command

in place others could call the controller and see the read-

ings. Using the sync bytes prevents all unauthorized access.

More: Pressing this button will access Modem Advanced

Diagnostics (Figure 24). Technical Support may ask for

information from this window.

Status: Modem status

Timer: Modem time

CMD: CMD (Command) status

From Modem: Modem initialization string

To Modem: Sending string (pager/voice numbers)

Reset: Resets timer and status. Resets and initializes the

modem.

Data Setup x

Time Spacing 04:00:00

% used 13.1 

Number of Days 385

Line 2315

Relay ON Times Line 2 

SENSORS CHANGE

Figure 21

Sensor to Display x

pH 

ORP 

PPM 

Temp 

Switch 1 

Switch 2 

Switch 3 

P1 

P2 

DP12 

P3 CHANGE

Figure 22

Communication Setup -more- x

Ring to Answer On :1

Long Hang Up Time :00:30:00 

Sync Byte 1: 0

Sync Byte 2: 0 

Pager Test

Pager #’s CHANGE

Figure 23

Modem Advanced Diagnostics x

Status: 32 PagDelay : 0

Timer: 9056 PagDelay : 0

CMD : 0 PagStatus : 0

From Modem:

11.1 9600,3360 O OK O OK O

To Modem:

Reset Levels – 112dBm, Q= 0

Figure 24

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