CONTROL DESCRIPTION PU CONTROL²

Table of Contents 1 General Information.................................................................................................. 5

1.1 Sander Hansen PU Control² ..................................................................................... 5 1.2 Short Cut Buttons .................................................................................................... 5 1.3 Screen Overview ..................................................................................................... 5

2 Alarms (F1) ................................................................................................................ 7

2.1 Alarm History .......................................................................................................... 8

3 Mimic Diagram (F2)................................................................................................... 9

4 Main Functions (F3)................................................................................................ 10

4.1 ”Filter Conveyor”.................................................................................................... 10 4.2 ”Drain Pasteuriser” ................................................................................................ 10 4.3 ”Starvation Override” ............................................................................................. 10 4.4 ”Light on Pasteuriser” ............................................................................................ 11 4.5 “Reset Alarms” ...................................................................................................... 11 4.6 ”Fill-up Pasteuriser” ............................................................................................... 11

5 PU/Temperature (F4) .............................................................................................. 12

6 Product Change (F5) .............................................................................................. 13

6.1 Product Change .................................................................................................... 13 6.2 Boil-out Product – Product Number 999 .................................................................. 14

7 Process Data (F6) ................................................................................................... 16

8 Main Selection (F7) ................................................................................................. 17

9 Production (F8) ....................................................................................................... 18

9.1 ”Stop/Start Pasteuriser”.......................................................................................... 18

10 WinAC Service ........................................................................................................ 19

11 IO Control ................................................................................................................ 20

12 Service Functions ................................................................................................... 21

12.1 ”Override Alarms Stopping Main Conveyor” ......................................................... 21 12.2 ”Automatic Water Filling” .................................................................................... 21 12.3 ”Lamp Test” ...................................................................................................... 22 12.4 ”Insert Follow Line” ............................................................................................ 22 12.5 ”System Reset” ................................................................................................. 22 12.6 ”Remote Reset Circuit Breakers” ........................................................................ 22

13 Language ................................................................................................................. 23

14 Date/Time ................................................................................................................. 24

15 Utilities ..................................................................................................................... 25

15.1 ”Reset Accumulators” ........................................................................................ 25

16 Operator Panels at the Infeed and Discharge End ............................................. 26

16.1 Conveyors ........................................................................................................ 26 16.2 Infeed Conveyor ................................................................................................ 27 16.3 Main Conveyor .................................................................................................. 27 16.4 Discharge Conveyor .......................................................................................... 27

17 Optional Features ................................................................................................... 28

17.1 SANDER HANSEN Sweeper.............................................................................. 28 17.2 Disinfection Dosing ............................................................................................ 29 17.3 Water Treatment ............................................................................................... 30 17.4 ”Filter Conveyor”................................................................................................ 31 17.5 ”Drain Pasteuriser” ............................................................................................ 31 17.6 ”Remote Reset Circuit Breakers” ........................................................................ 31

18 Installation of Software .......................................................................................... 32

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1 General Information

This Contol Description is a user’s guide to the SANDER HANSEN PU Control² of the pasteuriser. A copy of this description should always be kept near the pasteuriser so that it is at hand when needed by the operator.

1.1 Sander Hansen PU Control²

All the screen displays of the PU Control² have been designed according to KRONES standards. This means that a traditional layout of the screen displays with a blue background and an alarm bar displayed on all screen displays has been used. In the following, all screen displays will be explained in detail.

1.2 Short Cut Buttons

All main screen displays can be selected by means of the buttons shown below. These buttons can be selected from all screen displays.

F1 F2 F3 F4 F5 F6 F7 F8 Figure 1: Main buttons with short cuts can be selected from all screen displays.

Once a screen display has been selected, the corresponding button is highlighted in green. In the example in Figure 1, the screen display F6 has been selected. In the following chapters the screen displays will be explained one by one. However, in brief, the main screen displays can be described as follows:

F1 - Alarms F2 - Mimic Diagram F3 - Main Functions F4 - PU/Temperature F5 - Product Change F6 - Process Data F7 - Main Selection F8 - Production

1.3 Screen Overview

Figure 2: Date, time and screen heading.

The title of every screen along with the time and date are displayed on all screen displays. Set the time by pressing the “Date/Time Adjustment” button on the Main Selection screen (F7) (see Figure 12).

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Figure 3: Alarm bar with indication of an alarm.

The alarm bar is visible on all screens. Here the active alarms are displayed, alternating in two-second intervals. Further details concerning the alarm are displayed on the Alarm screen (F1) (see Figure 5).

Figure 4: Product in/out and Follow Line information.

Figure 4 shows the products currently present in the infeed and discharge area. At the same time, information about the mode of the machine - manual/automatic/forced - is displayed. When the Follow Line (product tracking) function has been selected, it will be displayed as a yellow line (see Figure 4). This line also indicates the number of PUs obtained by the row of products that is tracked by the Follow Line function. The yellow line will move across the screen with the same speed as the main conveyor and will disappear when it reaches the discharge area. (For more information on the Follow

Line function, please refer to section 12.4).

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2 Alarms (F1)

Figure 5: Example of an alarm screen display showing an active alarm.

Figure 5 shows all active alarms at a given time. On the list to the right, the numbers of the active alarms are displayed. The active alarms can be selected by pressing the arrow keys up or down. Non-active alarms can be displayed by means of the “#”

button. When activating this button, a numeric keypad appears on the screen display. Use this keypad to enter the number of the desired alarm. Subsequently, the alarm text will be displayed. The button “Reset Alarms” is used to acknowledge active alarms, which are deleted after being read by the operator. The operator will be prompted if an alarm reset is necessary. A history of active alarms can be displayed by pressing the “Alarm History” button. An example of this display is illustrated in Figure 6.

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2.1 Alarm History

Figure 6: Alarm History screen.

Figure 6 shows all active alarms from the time they have been registered to the time they have been reset. From this screen display it is possible to reset the ”Clear Alarm History” button. If additional information about an alarm is required, the “Show Alarm Text” button is activated. The alarm text shown on the screen display in Figure 5 will appear.

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3 Mimic Diagram (F2)

Figure 7: Mimic Diagram screen.

The Mimic Diagram is designed according to existing EU regulations and the Machinery Directive. This means that the symbols are white when the component is “OFF”, and green when the component is “ON” without errors. The component will be red if it is defective. Additional information about the error can be found on the alarm screen display shown in Figure 5.

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4 Main Functions (F3)

Figure 8: Main Functions screen.

Figure 8 shows the Main Functions for the operation of the machine.

4.1 ”Filter Conveyor”

This feature is optional. Please refer to section 17.4.

4.2 ”Drain Pasteuriser”

This feature is optional. Please refer to section 17.5.

4.3 ”Starvation Override”

A starvation signal sent to the pasteuriser from the line control can be ignored by pressing the “Starvation Override” button. When activated, the button is green. When deactivated, it is white.

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4.4 ”Light on Pasteuriser”

By pressing the “Light on Pasteuriser” button, the light in the discharge end of the pasteuriser will be turned on. The light will remain on for five minutes or until this button is reactivated. If the button is activated for more than two and a half seconds, the light will remain on for eight hours or until the button is reactivated.

4.5 “Reset Alarms”

By pressing the "Reset Alarms" button, the list of active alarms will be cleared. If any alarm conditions are still active, the corresponding alarm number will reappear in the active alarms list. While most alarms will reset themselves, once their alarm condition is no longer active, critical alarms will not (e.g. mechanical overload of the main drives). Therefore, the corresponding alarm number will remain in the active alarms list until the "Reset Alarms" button is pressed.

4.6 ”Fill-up Pasteuriser”

Before the pasteuriser can start, the buffer tanks must be filled up with water. To fill up the pasteuriser once, press the “Fill-up Pasteuriser” button on the Main Functions screen. This will open the main water supply and add fresh water to the buffer tanks to a level indicated by the level switch ”WATER LEVEL OKAY TO START PASTEURISER”. When the level is reached, the pasteuriser is ready to start. NOTICE: This function can only be used when the pasteuriser is not in operation

(off) and the “Automatic Water Filling” button is deactivated (see section

12.2).

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5 PU/Temperature (F4)

Figure 9: PU and temperature data shown on a cross section of the machine.

Figure 9 shows a cross section of the machine with regard to the different process data. Below the graph is a black bar containing a number. This number corresponds to the point where the product in question is expected to be in the machine. If there is a minus in front of the number, it signifies that the machine assumes that no products are present in this section. The colours of the graphs are as follows: Yellow line: PU pick-up Red line: Inner temperature of product Blue line: Spray temperature

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6 Product Change (F5)

Figure 10: Product Change screen.

Figure 10 shows the screen display for product change.

6.1 Product Change

The product to be pasteurised is selected by means of the arrow keys. By pressing the ”Select Product” button, a window appears and the selection is confirmed by pressing “OK”. After this, the new product will be selected and the new product number will be shown on the right side of the screen display. When the product change has taken place, the infeed conveyor(s) will stop immediately to create a gap between the “old” and the “new” products in the pasteuriser. The length of this gap will correspond to the length of the longest zone. When the length of this gap has been reached, the infeed conveyor(s) will restart automatically. The gap is used to prepare the zone for the “new” products so that the temperature corresponds to the demands of the “new” products. This is referred to as “Flying Product Change”, which does not interrupt production. The Control System automatically registers the PUs obtained, so that no products leave the machine underpasteurised.

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The procedure for a product change is as follows:

1. Push the last of the ”old” products over the dead plates in the infeed end. (If a

Sweeper has been installed, this will happen automatically. For more information

regarding the Sweeper, please refer to section 17.1) 2. The product is selected as described above. 3. The infeed conveyor is stopped until the main conveyor has run a distance corresponding to the length of the longest zone. 4. When the last of the ”old” products reaches the dead plates in the discharge end, the main conveyor will stop. 5. Push the last of the ”old” products over the dead plates in the discharge end. (If a Sweeper has been installed, this will happen automatically). 6. The main conveyor will now restart.

If a brand change is needed (shift from one product to the same product of another brand), the same product number is selected, and the “Select Product” button is activated. Every product to be pasteurised is found in the product database, which can be found on the control PC. In order to see the parameters for a specific product with regard to alarm limits, temperature set points etc., the “View Product Parameters” button is activated.

6.2 Boil-out Product – Product Number 999

When the machine is to be cleaned (boil-out), the Product Number 999 is selected. This product is special because it opens all valves and forces the conveyors to stop. Because of these settings, the Product Number 999 cannot be selected in connection with a Flying Product Change. It is recommended to perform a boil-out once a week. The boil-out is important in order to keep the microbiological growth at a minimum. Especially the regenerative zones are exposed to microbiological growth since the temperature in these zones varies between 20-50°C. This means that the perfect living conditions for algae are present. In order to perform a boil-out, the following steps must be executed:

1. Select the service program from the product list on the screen Production Change (F5) (see Figure 10). The product number is 999.

NOTICE: By choosing the Product Number 999, all product data is deleted by

means of an automatic system reset. Therefore, the Product Number 999 may only be selected when no products are in the machine.

2. Press the button "Select product" on the screen Product Change (F5) (see Figure

10) and confirm the selection by pressing “OK”.

3. In order to ensure that the boil-out is loaded for all zones, press the button "System Reset" on the Service Functions screen (see Figure 16).

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4. On the screen Process Data (F6) (see Figure 11) it must be ensured that all set points have been set at 70°C or 80°C according to the selected product file. The product file can be displayed by pressing the button “View Product Parameters” on the screen Product Change (F5) (see Figure 10).

5. If the machine is stopped, press the button "Start pasteuriser" on the screen

Production (F8) (see Figure 13).

6. During the boil-out the temperature will rise to 70°C or 80°C in the zones. When these set point temperatures are achieved, the machine must continue to run for at least 15 minutes.

7. In order to avoid flooding the floor with hot water, the pasteuriser must NOT be

stopped after a boil-out.

8. Select another product on the screen display Product Change (F5) (see Figure 10) and press the button "Select Product".

9. In order to ensure that the boil-out function is no longer active, perform a system

reset by pressing the button “System Reset” on the screen display Service Functions (see Figure 16).

10. In order to cool the pasteuriser down, it must continue to run for 10 minutes.

11. Press the button "Stop Pasteuriser" on the screen Production (F8) (see Figure

13).

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7 Process Data (F6)

Figure 11: Process Data screen.

Figure 11 shows the data screen displaying all of the accessible machine data in detail. All zones are represented including the set points and the current temperatures. The CHESS and buffer system are represented, including the relevant current temperatures. Furthermore, the fluctuations of the speed control are shown compared to the set point from the product database.

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8 Main Selection (F7)

Figure 12: Short cuts for all accessible screen displays.

Figure 12 shows the Main Selection screen display which contains short cuts for all accessible screen displays of the Control System.

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9 Production (F8)

Figure 13: Production screen.

Figure 13 shows the temperature bars of the specific zones compared to the current set points.

9.1 ”Stop/Start Pasteuriser”

When the machine is not running, the “Start” button is white. When the “Start” button is activated, it turns green. If the machine cannot start, possibly due to a low water level, it will be in standby mode and the button will flash green and white. When the water level is correct, the machine will start automatically. The machine is stopped by pressing the “Stop Pasteuriser” button. Due to the shutdown sequence of the pumps, the pasteuriser will not stop immediately. NOTICE: The shutdown process can take several minutes.

The horizontal bar shows the capacity. Below the bar, data such as the discharge temperature and the PU pick-up for the products currently leaving the machine is displayed.

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10 WinAC Service

Figure 14: The WinAC Service screen display shows the mode of the PLC.

Figure 14 shows the mode of the PLC. Additional information about the cause of the stop can be found in the text in the “Event” column. The graphic display is minimised or shut down by pressing either the “HMI Minimise” button or the “Close Down Visualisation” button respectively.

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11 IO Control

Figure 15: IO Forcing screen.

Figure 15 shows the screen display to force all IOs. Forcing must be activated before it can take place. This is done by pressing the button “Enable Forcing”. Next, a password (*****2) is entered, and the “Force ON/OFF” buttons are highlighted. The IO to be forced is selected, and either “Force ON” or “Force OFF” is activated. Afterwards, the “#” sign is displayed together with the IO status. By pressing “Clear Forcing”, the IO

will automatically return to automatic mode. In order to make all IOs return to automatic mode, forcing must be deactivated. This is done, by pressing the “Disable Forcing” button.

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12 Service Functions

Figure 16: Service Functions screen.

Figure 16 shows the Main Functions that are needed to operate the pasteuriser. The functions are as follows:

12.1 ”Override Alarms Stopping Main Conveyor”

This button is used to force the pasteuriser to run, even though a given fault condition normally would not allow this. This function is to be used with care, and it is password-protected (*****3).

12.2 ”Automatic Water Filling”

The pasteuriser does not make use of the Automatic Water Filling function by default. In order to fill up the pasteuriser before start, the operator must therefore press the

“Fill-up Pasteuriser” button on the Main Functions screen (F3) (see section 4.6 and Figure 8). If, however, Automatic Water Filling is desired, the “Automatic Water Filling” button on the Service Functions screen must be activated. When “Automatic Water Filling” is activated, the PU Control2 regulates the water filling, and it is therefore not necessary to activate the “Fill-up Pasteuriser” button on the Main Functions screen display. The “Automatic Water Filling” button will give out a green light when activated.

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12.3 ”Lamp Test”

To test the correct function of the light bulbs, press the “Lamp Test” button. If they are functioning properly, they will light up. This will make it possible to check whether or not one or more bulbs have blown.

12.4 ”Insert Follow Line”

By pressing this button, a Follow Line is inserted showing the amount of PUs obtained by the test product. In order to show a specific row of products going through the machine, the “Insert Follow Line” button must be activated at the very moment spraying of the row of products begins. The purpose of this function is not only to be able to follow a specific row of products, but also to find out when a SANDER HANSEN PU Logger or the first line of “new” products are coming out of the pasteuriser after a product change has taken place. On the ”PU/Temperature” screen display, a yellow line shows the position of the product in question as long as it is inside the pasteuriser. Furthermore, this line is displayed on all screen displays. The line is illustrated in Figure 4 (see section 1.3).

If the ”Insert Follow Line” button on the “Service Functions” screen display is activated while a product is being followed or tracked, another Follow Line is displayed. Up to five Follow Lines can be displayed at the same time. The oldest Follow Line is reset when a new line is displayed. The minimum distance between two successive lines is 10 seconds. The button ”Insert Follow Line” is used to indicate activated Follow Lines if present. The button is green when one or more Follow Lines are active. When a product being tracked leaves the pasteuriser, the button flashes for 10 seconds. The same function, with integrated light indication, is found on the operator panel A3 at the infeed end of the pasteuriser. Both buttons will always light up at the same time.

12.5 ”System Reset”

All calculations are reset, and all products are treated as new products with 0 PU and an inner temperature of 4˚C.

12.6 ”Remote Reset Circuit Breakers”

Remote Reset Circuit Breakers is an optional function. Please refer to section 17.6.

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13 Language

Figure 17: Language Selection screen.

From the “Language Selection” screen display either English, German or the customer-specific language (if ordered) is selected by pressing the corresponding button.

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14 Date/Time

Figure 18: Setting the date and time.

The date and time is changed by pressing the ”Password” button and entering the password (*****4). Subsequently, the date and time are changed by pressing the relevant fields. Finally the “Set Date and Time” button is activated.

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15 Utilities

Figure 19: Utilities screen.

Figure 19 shows all of the current and accumulated utilities. All of the data is summarised, to provide a good overview of the different utility parameters such as electricity, fresh water, steam (or HTHW) or cold water.

15.1 ”Reset Accumulators”

If a summary is needed from a given time forward, the ”Reset Accumulators” button is activated. Hereby, all accumulators are reset and a date is displayed in the “Last Reset Accumulators” field. This date corresponds to the last reset. At start-up the date is set to “NA” until the “Reset Accumulators” button has been activated for the first time.

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16 Operator Panels at the Infeed and Discharge Ends

From the operator panel at the infeed end the following actions can be taken:

Control of the infeed conveyor(s) on deck 1 (and 2 if available).

Start of Follow Line.

Start of Sweeper. Manual control of the infeed Sweeper(s) on deck 1 (and 2 if available).

Emergency stop. From the operator panel at the discharge end the following actions can be taken:

Control of the main conveyor(s) on deck 1 (and 2 if available).

Control of the discharge conveyor(s) on deck 1 (and 2 if available). Manual control of the discharge Sweeper(s) on deck 1 (and 2 ifavailable).

Light on pasteuriser.

Emergency stop.

16.1 Conveyors

The conveyors are controlled automatically by the control system or manually by means of the buttons on the panels. When the pasteuriser is running, the conveyors on the deck(s) will run synchronously in order to secure a proper pasteurisation. If the pasteuriser has more than one deck, a stop of one of the decks results in a stop of all decks. The controls of the infeed, main and discharge conveyors are interdependent. If the main conveyor stops, the infeed conveyor will stop as well. If the discharge conveyor stops, both the infeed and the main conveyor will stop. Each conveyor has a push button with a light indicator. When the pasteuriser is running, each conveyor can be stopped, by pressing the “Stop” button of the conveyor in question. The other conveyors will stop as described above. When activated, the “Stop” button stops a conveyor. The conveyor will not restart, until the “Start” button of the conveyor in question has been activated. The light indicators on the buttons are similar for all conveyors and are as follows: Green: Conveyor is running.

The Control System has started the conveyor. Flashing green: Conveyor is ready to start.

Conveyor is not running, but is controlled by the control system. An information text on the alarm bar will describe why the conveyor has stopped.

CAUTION: In this mode the conveyor can start at any time without the operator

taking action.

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Red: Conveyor has stopped. Conveyor has been stopped from the infeed or discharge panel. As mentioned above, the conveyor will not start until the “Start” button of the conveyor in question has been activated. When the pasteuriser is not running, the light indicators for the conveyor are red.

Flashing red: Error detected on the drive.

The conveyor has been stopped due to an error on the drive or on one of the other components controlling the conveyor. The active alarm is checked, the error is corrected, and the alarms are reset on the alarm screen display shown in Figure 5

During maintenance, the conveyors can run when the pasteuriser is not in production mode (pasteuriser stopped). In this case the “Start” and “Stop” buttons can be used to start and stop the conveyors without any interaction with the other conveyors. The light indicators will still be as described above.

16.2 Infeed Conveyor

The infeed conveyor will stop due to the following circumstances: The main conveyor has stopped.

A line signal has sent a stop signal.

The infeed Sweeper has been started.

A product change has been performed.

Other alarms can stop the conveyor as well (see the alarm bar).

16.3 Main Conveyor

The main conveyor (and thereby also the infeed conveyor) will stop due to the following circumstances in automatic mode:

The discharge conveyor has stopped.

An alarm stopping the main conveyor has been detected (see the alarm bar).

16.4 Discharge Conveyor

The discharge conveyor (and thereby the main and infeed conveyors) will stop due to the following circumstances in automatic mode:

A proximity switch at the discharge end has been activated (build-back). The line signal indicates a build-back on the line (external standby).

The PU Logger has activated the logger detection arm in the discharge end.

Other alarms can stop the conveyor as well (see the alarm bar).

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17 Optional Features

This section describes optional features of the pasteuriser.

17.1 SANDER HANSEN Sweeper

The Sander Hansen Sweeper is an optional component.

17.1.1 Start the SANDER HANSEN Sweeper

The Sweeper is activated by pressing the “Sweeper” button. Hereby, the entire Sweeper cycle is started. The “Sweeper” button is green as long as the Sweeper is running. The following takes place:

1. The infeed conveyor(s) will stop immediately and they will not restart until the main conveyor(s) has (have) run a distance corresponding to the length of the longest zone. 2. The infeed Sweeper immediately pushes the products in the infeed end over the dead plates. 3. When the products pushed into the machine reach the dead plates in the discharge end, the Sweeper automatically pushes them over the dead plates.

NOTICE: The discharge Sweeper will start automatically if the infeed Sweeper has

functioned properly. If problems occur while the products are taken from the infeed to the discharge, the Sweeper will not push the products out of the machine. Examples of potential problems include failure of a proximity switch, overload of the circuit breaker, switch off of an isolating switch or manual operation of individual Sweepers.

17.1.2 Manual Operation of a SANDER HANSEN Sweeper:

The Sweeper can be operated manually by turning the manual key switch for the Sweeper. If the key switch is turned to the right, the Sweeper will move forward. If the key switch is turned to the left, the Sweeper will move backwards. The light will indicate if the Sweeper is in start position. NOTICE: When the Sweeper has been operated manually, it must be run

backwards into start position where it will activate the proximity switch. The Sweeper will not start automatically if it is in a position where the proximity switch is not activated. (The light at the key switch is not on).

When a Sweeper is run backwards towards start position, it will stop automatically when the proximity switch is activated. A Sweeper in operation will not be able to continue after a power failure or an emergency stop. In this case the Sweeper must manually be moved backwards into resting position. If this is not possible due to operation errors, the production can only continue if the isolating switch of the Sweeper is switched off, and the Sweeper bar is moved into a position where it is out of the way.

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All operation errors of the Sweepers will be displayed as alarms on the Alarm screen display. Besides the normal alarms for overload of the motors, the Sweeper also has alarms for overload of the torque clutch between a motor and its drive shaft and “Time-out” alarms. Every step in the operation sequence of a Sweeper has a maximum time. If this maximum time is overrun, the Sweeper will stop, and a “Time-out” alarm will be displayed. If for example a proximity switch fails so that the sensor is constantly activated, the Sweeper will only run for a few seconds. The Sweeper should go through the entire Sweeper cycle due to the fact that the proximity switch is activated. Since the signal from the sensor is not switched off when the Sweeper leaves the start position – as during normal operation – a “Time-out” alarm is given. NOTICE: The display of the Sweeper alarms for overload of the torque clutch and

time run-out must be reset manually. NOTICE: When the Sweeper is operated from the panel, either by means of the

button or the key switch, it must be ensured that the main conveyor is running and that the deck is not loaded with products. If this precautionary measure is not taken, the products as well as the Sweeper can be damaged.

17.2 Disinfection Dosing

Disinfection Dosing is an optional component.

Figure 20: Disinfection Dosing screen.

The operator can enter the following values:

Dosing Cycle Time (in hours)

Volume of Chemical Tank (in l)

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The operator can push the following buttons :

“Stop/Start Automatic Dosing” to stop/start the Disinfection Dosing

“Reset Level Chemical Tank”. When replacing an empty water treatment tank with a new one or when refilling a tank to the top, the operator pushes this button to set the estimated level back to 100%

The bar graph at the bottom of the screen shows the estimated level of the tank in percentages.

17.3 Water Treatment

Water Treatment is an optional component. The operator can enter the following values:

Desired Concentration (in kg/m3) Density of Chemical (in kg/l)

Volume of Chemical Tank (in l) The operator can push the following buttons:

“Reset Level Chemical Tank”. When replacing an empty water treatment tank with a new one or when refilling a tank to the top, the operator pushes this button to set the estimated level back to 100%

Please see Figure 21.

Figure 21: Water Treatment screen.

The bar graph at the bottom of the screen shows the estimated level of the tank in percentages.

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17.4 ”Filter Conveyor”

The automatic Filter Conveyor is an optional component (see section 4.1). The Filter Conveyor is a fine-meshed stainless steel wire belt running the entire length of the pasteuriser. It provides a double filtering of the water and thereby prevents any foreign matter from entering the pumps. Start the Filter Conveyor by pressing “1” on the “Filter Conveyor” button on the Main

Functions screen display (F3) (See section 4, Figure 8). When the Filter Conveyor is turned on, it will automatically run slowly every time the cold buffer pump is running, carrying any foreign matter towards the infeed or discharge ends of the pasteuriser. Press “0” on the “Filter Conveyor” button to stop the Filter Conveyor.

17.5 ”Drain Pasteuriser”

The automatic drain is an optional component (see section 4.2).

By pressing the “Drain Pasteuriser” button all drain valves will be opened, and the pasteuriser will slowly be emptied of water. The draining is stopped by pressing the “Stop” button.

17.6 ”Remote Reset Circuit Breakers”

The “Remote Reset Circuit Breakers” button is an optional feature for automatic control

of circuit breakers (see section 12.6 and Figure 16) In order to add this function, an auxiliary unit is built onto the circuit breaker. This unit can be operated in automatic or manual mode. In automatic mode it is possible to control the circuit breaker from a remote location - in this case from the control PC. The “Remote Reset Circuit Breakers” button only functions when the thumb-grip handle on the auxiliary unit is in “Auto” (automatic mode). The circuit breaker can be activated three times within eight hours by means of the “Remote Reset Circuit Breakers” button. If it is necessary to activate the button more than three times within eight hours, the thumb-grip handle on the auxiliary unit must be pulled from “Auto” to “Man” (manual mode) and back to “Auto”. By doing this, the eight hours timer is reset and the circuit breaker can once again be controlled three times within eight hours. When the thumb-grip handle on the auxiliary unit is in “Man”, the circuit breaker cannot be operated from the control PC meaning that the circuit breaker functions as a normal circuit breaker.

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18 Installation of Software

After commissioning, the commissioning engineer must hand over a CD-ROM containing a backup of the entire system together with a start-up floppy disc for installation of the software. If a reinstallation of the software should become necessary, the following procedure must be followed:

1. Insert the floppy disc in the disc drive and restart the PC. 2. At start-up all ghost software is installed automatically. 3. When the blue ghost screen is displayed, the CD-ROM is inserted in the CD- ROM disc drive. 4. Select ”Disc from IMAGE” from the menu. 5. Select the path for the CD-ROM drive. 6. Subsequently, the software asks for a serial key which is found on the label of the floppy disc. Enter this key. 7. Press ”OK” twice. 8. A yellow bar will indicate how far the reinstallation of the software is. 9. The reinstallation is complete when the message appears on the screen. 10. Remove the CD-ROM and the floppy disc and restart the PC. 11. The system is hereafter started with the most recent software.