Pahlen AUTODOS 5000 User manual

pH/chlorine monitor

for swimming pools

AUTODOS 5000

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

Eng_Autodos5000.doc ver 3.2 - page 2

Register ...................................................................................................................................................................... 2

1. Installation ............................................................................................................................................................ 3

1.1. Suggested Layout for Installation of AUTODOS 5000.............................................................................................. 3

1.2. Guide to Installation of an AUTODOS 5000 System................................................................................................. 4

1.3. Suggested Connections................................................................................................................................................ 5

2. Operation .............................................................................................................................................................. 6

2.1. Controls and Indicators................................................................................................................................................ 6

2.2. Text Messages ............................................................................................................................................................. 10

2.2.1. Run Time Texts ...................................................................................................................................... 10

2.2.2. Fault Texts .............................................................................................................................................. 10

2.3. Start-up Sequence ........................................................................................................................................................ 10

2.4. Description of on/off Dosing Control ......................................................................................................................... 11

2.4.1. Acid/Alkali Dosing (on/off) by pH Control........................................................................................... 11

2.4.2. Chlorine Dosing (on/off) by Chlorine Monitoring ................................................................................ 11

2.5. Description of Frequency Control Dosing with P-regulation..................................................................................... 12

2.5.1. Acid/Alkali Dosing (frequency) pH Control (P-regulation).................................................................. 12

2.5.2. Chlorine Dosing (frequency) by Chlorine Monitoring (P-regulation) .................................................. 12

2.6. Description of Frequency Control with PD-regulation............................................................................................... 13

2.6.1. Parameter Choice for PD-regulation...................................................................................................... 13

2.7. Dosing Control via Current Output............................................................................................................................. 13

2.8. Alarm High .................................................................................................................................................................. 14

2.9. Alarm Low................................................................................................................................................................... 14

2.10. Alarm and Flow Fault LED's .................................................................................................................................... 15

2.11. Reset .......................................................................................................................................................................... 15

2.12. Probe Check (display uncalibrated values) ............................................................................................................... 15

2.13. Set-up ......................................................................................................................................................................... 16

2.13.1. Change Opening Code for Code Level ................................................................................................ 16

2.13.2. Enter Selected Set-up Mode................................................................................................................. 16

2.13.3. Change Set-up Options ........................................................................................................................ 16

2.13.4. Common Set-up.................................................................................................................................... 17

2.13.5. Channel Specific Set-up (Free Chlorine)............................................................................................. 17

2.13.6. Channel Specific Set-up (Combined Chlorine) ................................................................................... 18

2.13.7. Channel Specific Set-up (pH- Acid/Alkali)......................................................................................... 18

3. Maintenance.......................................................................................................................................................... 19

3.1. Calibration ................................................................................................................................................................... 19

3.1.1. pH Calibration ........................................................................................................................................ 19

3.1.2. Free Chlorine Calibration (ProMinent chlorine electrode CLE 2.2) ..................................................... 20

3.1.3. Free Chlorine Calibration (ProMinent chlorine electrode 4-20mA CLE 3-mA-10ppm)...................... 21

3.1.4. Free Chlorine Calibration (PB-100 chlorine electrode)......................................................................... 22

3.1.5. Free Chlorine Calibration (Jesco chlorine electrode) ............................................................................ 23

3.1.6. Combined Chlorine Calibration (ProMinent chlorine electrode CTE 1-mA-10ppm) .......................... 24

3.2. Maintenance Schedule................................................................................................................................................. 25

3.2.1. Cleaning Electrodes................................................................................................................................ 25

3.2.2. Free Chlorine Cell Control..................................................................................................................... 25

3.2.3. Free Chlorine Cell Maintenance (Prominent)........................................................................................ 25

3.2.4. Chlorine Cell Maintenance (PB-100) .................................................................................................... 25

3.2.5. Chlorine Cell Maintenance (Jesco) ........................................................................................................ 25

4. General Description of Pool Water Cleaning..................................................................................................... 26

4.1. Wanted Regulation Result........................................................................................................................................... 27

4.2. pH Regulation.............................................................................................................................................................. 27

4.3. Measuring Free/Combined Chlorine........................................................................................................................... 28

4.4. Free Chlorine Regulation by Free Chlorine Measurement ......................................................................................... 28

4.5. Combined Chlorine Regulation................................................................................................................................... 28

5. General Description ............................................................................................................................................. 29

6. Box (Fibox Cardmaster PC21/18 CFC II).......................................................................................................... 31

7. Electrical Connections ......................................................................................................................................... 32

8. Factory Settings.................................................................................................................................................... 33

9. Fault Finding ........................................................................................................................................................ 35

10. Technical Data.................................................................................................................................................... 36

11. Program Versions............................................................................................................................................... 37

12. Disclaimer ........................................................................................................................................................... 37

13. AUTODOS 5000 PC Interface (optional) ......................................................................................................... 38

14. AUTODOS 5000 PLC Interface (optional) ...................................................................................................... 39

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

Eng_Autodos5000.doc ver 3.2 - page 3

1. Installation

1.1. Suggested Layout for Installation of AUTODOS 5000

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

Eng_Autodos5000.doc ver 3.2 - page 4

1.2. Guide to Installation of an AUTODOS 5000 System

Important points to note when installing an AUTODOS 5000 system.

Suitable component placement and connections are shown in the preceeding diagram.

Monitoring and dosing connections should be made according to the diagram.

The chlorine and acid/alkali injection points should be as far apart as possible to avoid any chemical interaction.

Both the control unit and the flow cell should be mounted in a vibration free and dry atmosphere. Suitable water flow

is found in the ‘Maintenance’ chapter.

Place the flow cell as near as possible to the monitoring point to avoid long reaction times. It is also advantageous if

the control unit is near to the flow cell to facilitate calibration.

The outlet from the flow cell should be free from pressure. Lead the outlet water to a drain or a pressure equalization

tank.

The dosing pumps should be controlled via the filter pump, electrically via a contactor.

A flow guard shall be used for preventing dosing in the event of no water flow in the flow cell.

The alarm relay is arranged to operate in a "fail safe" manner. Voltage is applied to the relay when no fault condition

exists and is disconnected if a fault condition occurs. This means that the relay may be used to indicate a power fail

condition. Electrical connections can be made as suggested in the following diagrams and should be carried out by a

qualified electrician.

When installing an AUTODOS 5000 with free chlorine electrode in swimming pools that have previously been

treated with organic chlorine (trichlor or dichlor), the pool water must be changed. This is because the cyanuric acid

content in the pool water, caused by the organic chlorine, results in an exceptionally high value of chlorine when

DPD1-testing, thus making a correct calibration impossible. The chlorine cells show the free chlorine value, whereas

a DPD1-test shows the free chlorine together with the cyanuric acid bound chlorine. Calibration shall be made with a

photometer.

Dosing relay is max. 1A.

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

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1.3. Suggested Connections

In the example below, connections for the three available regulation alternatives are shown.

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

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2. Operation

2.1. Controls and Indicators

This is a brief description of all functions and indicators.

Refer to the respective sections in this handbook for further information.

NORMAL DISPLAYS

Normally channel 1 displays free chlorine, channel 2 displays combined chlorine and channel 3 displays pH.

With start or set up or during error conditions short text messages may be displayed (refer to the 'text message'

section for further information).

CODE LEVELS

To avoid unintentional alterations and to prevent unauthorised personal from changing the settings, there are two

different code levels. In normal mode no settings or values can be altered, you can only RESET the alarms.

CODE LEVEL 1: Set values, alarm limits and regulation mode can be changed and calibration is possible.

CODE LEVEL 2: All available changes, including set-up are possible

If no codes are used, code level 2 is reached directly when the button ‘CODE’ is pressed.

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

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ENTER CODE LEVEL

CODE When the button 'CODE' is pressed down, the opening code can be entered by using the buttons ’0’

–’9’, ’RESET’ clears the display. If the entered code is the same as opening code 1, you will enter

code level 1and if the entered code is the same as opening code 2, you will enter code level 2 when

the button 'CODE' is released. This is indicated by LED ’CODE’, if the LED ’CODE’ is flashing

you are in code level 2 and if there is steady light, you are in code level 1. The opening code can be

altered in calibration mode, this is described in the calibration chapter. If you have forgotten the

code, it can be displayed during the startup sequence. If the button ’CODE’ is pressed during the

count-down time, the code for code level 2 is displayed. If no codes are used, code level 2 is reached

directly when the button ‘CODE’ is pressed.

VIEW/ALTER SET VALUES

SET

VALUE

When the button 'SET VALUE' is pressed down, the set values can be altered by using the buttons

'↓' or '↑' below the displays for the respective channels. At least code level 1 is required for alteration

of the values.

VIEW/ALTER ALARM LIMITS

ALARM

HIGH

When the button 'HIGH ALARM' is pressed down, the high alarm limits can be altered by using

the buttons '↓' or '↑' below the displays for the respective channels. At least code level 1 is required

for alteration of the values.

ALARM

LOW

When the button 'LOW ALARM' is pressed down, the low alarm limits can be altered by using the

buttons '↓' or '↑' below the displays for the respective channels. At least code level 1 is required for

alteration of the values.

OTHER DISPLAY

VIEW

UNCAL

The uncalibrated value for all electrodes can be shown by pressing the 'FUNCTION' and 'LOW

ALARM' buttons simultaneously.

VIEW

FLOW

GUARD

To display the current status of the flow guard input (’F-0’ = flow OFF, ’F-1’ = flow ON) , press the

'SET VALUE' and 'HIGH ALARM' buttons simultaneously. If no flow guard is selected, there

will be no display.

VIEW

VERSION

To display the current program version press the 'HIGH ALARM' and 'LOW ALARM' buttons

simultaneously.

VIEW

SERIAL

NUMBER

To display the factory programmed serial number, press the 'FUNCTION' and 'HIGH ALARM'

buttons simultaneously.

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

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DOSING MODE SELECTION

SELECT

FUNC.

When the button ’SELECT FUNCTION’ is pressed, the dosing mode switches between OFF-

AUTO-OFF-AUTO-OFF-......... Dosing can be deselected in set-up mode and if this is the case,

nothing happens when you press the button. To get manual dosing , press the buttons 'SELECT

FUNCTION' and 'SET VALUE' simultaneously. Manual dosing is deactivated by pressing the

button 'SELECT FUNCTION'. At least code level 1 is required for alteration.

OFF No dosing

AUTO Automatic dosing according to chosen parameters (normal selection)

DOS Continuos dosing (even when error but stops with dosing error)

OTHER BUTTONS

RESET Press to clear a current alarm condition. When this button is pressed a text is shown on the

appropriate channel to indicate the type of alarm, after 1 second the displayed alarm is acknowledged

and a new alarm displayed if there are any. When all alarms are acknowledged, the alarm relay is

always cleared and depending upon whether the fault condition(s) still exists, the alarm LED is

either cleared or goes over to a steady display. Active alarms are displayed while the 'RESET'

button is pressed.

CAL Use this button to enter the calibration mode. This button operates on a rotary basis selecting either

ACTIVE, ADJUST or OFF in turn.

↑ ↓ The arrow buttons are used for calibration or changing set values and alarm limits on all 3 channels.

If either of these buttons are held depressed for more than 1 second a 'fast stepping' mode is entered.

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

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LED’s (INDICATORS) FOR DOSING

OFF Dosing not active

AUTO Dosing with automatic control

DOS Dosing active

If not 'OFF' and not 'AUTO' then manual dosing is selected and if no dosing takes place, the dosing is deselected in

the set-up. It may also be off because of too long dosing time if this function is selected but in that case there will

also be an alarm.

If the pH value is outside its limits, there is an ’alarm’ on the chlorine regulation channels if chlorine dosing is active.

The chlorine dosing is stopped until the pH value is within its limits again. This is indicated by flashing AUTO

LED’s on the chlorine channels and alarm text ’PHF’.

LED’s (INDICATORS) FOR ALARM

LOW FLOW Insufficient water flow through the flow cell

ALARM High or low alarm, dosing alarm or flow alarm on the displaying channel

All alarms have a 5 second delay.

LED’s (INDICATORS) FOR CALIBRATION

ACTIVE Calibration mode entered. Possible to set chlorine zero calibration, pH7 and pH9 values

ADJUST Calibration mode entered. Possible to set chlorine calibration values

Note. If the 'ACTIVE' LED flashes then set up mode has been entered. Leave set up mode by stepping past the last

row until the 'ACTIVE' LED is cleared. Leaving set up mode automatically returns the unit to normal operation.

OTHER LED’s (INDICATORS)

CODE Indicates active code level 1 or active code level 2 (flashing)

STDBY Indicates input STDBY that stops alarm and dosing, alarm relay is activated at STDBY

⊗

pH/chlorine regulator AUTODOS 5000 - 2005-01-21

Eng_Autodos5000.doc ver 3.2 - page 10

2.2. Text Messages

Under certain conditions channels 1, 2 and 3 can display the following text messages.

2.2.1. Run Time Texts

The following texts can occur during normal programme operation.

--- EEP Er1 During a first start or with a fault in the EEPROM. Reset returns to the basic program.

dEL SEC ### During start-up, ### is the remaining start delay in seconds.

2.2.2. Fault Texts

These are the texts that can be displayed during calibration or after an incorrect calibration.

EL1 Active electrode fault 1 (low calibration point < min).

EL2 Active electrode fault 2 (low calibration point > max).

EL3 Active electrode fault 3 (high calibration point < min).

EL4 Active electrode fault 4 (high calibration point > max).

noC Chlorine value too low, calibration not possible.

These are the texts (in priority order) that can be displayed when the 'RESET' button is pressed.

FLo Active flow alarm.

Lo Active low alarm.

Hi Active high alarm.

doS Dosing error

PHF Chlorine dosing stopp because of pH exceeding limits

SbY Standby

--- No uncleared fault.

2.3. Start-up Sequence

At start-up the AUTODOS 5000 displays the text ' dEL SEC 059, 'dEL SEC 058'..... showing the remaining start-up

delay in seconds. By pressing the 'RESET' button the start-up sequence may be bypassed. The start-up delay is

intended to prevent false alarms due to unstabilised measured values.

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