“Source”Freestanding DME Refrigeratorwith Dispenser for Plain and Soda Water

SOURCE & GLACIER

GLACIER SOURCE

Source

Mariestad factory (ABF)

180 cm freestanding refrigerator with DME (Dynamic Mini Evaporator), electronic control ERF2000

Colours: stainless steel and white

R.H. door hinge, not changeable (not even by service), but L.H.-hinged PNCs can be defined in case of market demand

new unit for water cooling and carbonation

new dispenser in the door

SOURCEBrands and Models

927 770 960 ERES 3500 Electrolux EU927 770 961 ERES 3500 X Electrolux EU927 771 240 ERES 3500 Electrolux UK927 771 241 ERES 3500 X Electrolux UK927 771 140 ARES 3500 ArthurMartin-Electrolux FR927 771 141 ARES 3500 X ArthurMartin-Electrolux FR927 771 340 QR 2519 W Husqvarna-Electrolux SE927 771 341 QR 2519 FX Husqvarna-Electrolux SE

Interior

New components

•Wire basket

•Glass shelf, to be used in front of cooling unit and as Quick chill shelf

New Door Seal

Water Connection

PEX hose 1,5 m long opaque (hose of 4 m length available under part No. 1503885-02/0)

static pressure at connection point has to be between 2,5 and 5 bar

if more than 5 bar, a pressure-reducing valve has to be used (part No. to be defined)

minimum pressure of 2,5 bar is critical for soda preparation (adequate pre-sale information is very important to avoid complaints to which there is no solution)

Cooling & Carbonation System, Main Components

Cover

Adapter with strap

Index/Reference for correct

position of filter

Lid/Door

Water filter

Ventilation gridCO2 Cylinder

Channel to access/clean

the fridge evaporator drainage.

Cooling & Carbonation System, Main Components

2 way dividerDouble valve

Difference pressure valve

CoverWater filter with filter head and bracket

Water tank

Soda tank Single check valve

Cooling & Carbonation System, Exploded View

Cooling & Carbonation System

Cooling & Carbonation System, Function

Cold water (2-7°C), with a pressure of 2,5 bars or higher, and gas are through the differential pressure valve and the separate non-return valves and via a split-connector led to the soda tank. In order to ensure that the pressure drop in the supply line immediately before the soda tank is large enough, a restriction is introduced flow wise after the non-return valve.

During dispensing a pressure drop large enough to allow carbon dioxide to enter occurs in the soda tank. During and after finished dispensing the soda tank is refilled by water until supply water pressure is regained.

Diff.pressure valve = Device allowing the incoming water pressure to pilot the gas pressure. The gas pressure shall be 0,4 - 0,8 bars lower than the water pressure.

Inlet Valve and Float Switch

Water Connection Box

Single solenoid

valve 230V

Plastic box

Floater and micro switch

Double Valve

Plain-water valve has red insert

Restriction(Flow Limiter)

0,8 mm

Dispensing Valve, Door-Mounted, 12 Volts

Dispenser Unit, Main Components

Insert bay, foamed into the door.

Prepared for both arched and flat

door type

Drip tray

Dispenser body.Prepared for both

arched and flat door type

Flap

Pushrod/light guide

DecorBracket for PCB

PCB, with LED light

Dispenser head valve

Outlet tube

Spring

Screws 2x

Screws 2x

Activation of the ValvesCold (Plain) Water Demand

Select cold water on the user interface, and then press cup against flap to activate microswitch (only light pressure to avoid jamming the actuator)The following valves will open simultaneously : (1) main fresh water valve,(2) cold water valve (red insert), (4) dispenser valve;

to end, release flap, and the valves close in the following order(1) and (2) immediately(4) after 150 ms

Activation of the ValvesSoda Water Demand

Select soda water on the user interface, and then press cup against flap to activate microswitch

The following valves will open simultaneously : (1) main fresh water valve,(3) soda water valve (grey insert), (4) dispenser valve;

to end, release flap, and a valve activation sequence is started:(3) closes immediately(2) opens for 400 ms to flush riser tube - this is to avoid pressure build-up when soda water in the tube is getting warmer (4) closes 150 ms after (2)(1) stays open for 90 seconds to fill soda water tank

(1)

(4)

(2) (3)

Dispensing ofCold Water

CO2

cold watersoda water

valve open

Dispensing End

Dispenser valve (4) closes 150 msafter main fresh water valve (1) and cold water valve (2)

CO2

cold watersoda water

valve open

No DispensingAction

CO2

cold watersoda water

valve open

Dispensing ofSoda Water

freed volumen is first filledwith CO2 gas;The differential pressure valvekeeps the gas pressure 0,4 barlower than the water pressure

CO2

cold watersoda water

valve open

Tube Flushing

Riser tube in door is flushed for400 ms with cold water, to avoidpressure rise when warming up;Resstriction allows water from thecold water tank to fllow only slowly into the soda water tank

CO2

cold watersoda water

valve open

End of Soda Water Dispensing

CO2

cold watersoda water

valve open

main fresh water valve (1) stays openfor 90 s to allow water to fill the sodawater tank through the restriction

No Action,Soda Tank not fully refilled

CO2

cold watersoda water

valve open

Pressure Balancingin Soda Water Tank

CO2

cold watersoda water

valve open

main fresh water valve (1) opens every15 min for 60 s, to allow for refill and pressure balancing in the soda watertank.This automatic operation is dis-continued after 12 hours without any dispensing action.

Balanced State

CO2

cold watersoda water

valve open

Activation of the Valves

Maximum opening time for the valves (2), (3) and (4) is 2 minutes, after which they will be closed by the software indifferent of flap position

If required, they can be re-activated by releasing and pressing the flap again

the main fresh water valve opens every 15 minutes for 60 seconds to balance the pressure, but this action will stop if no dispensing action takes place for 12 hours

User Interface, Control Panel

Func

tions

desc

ribed

on st

icker

place

d ins

ide of

door

, and

in

the I

FU

Float Switch

Float switch in water connection box is intented primarily to detect a leak from bad tightening of the hose nut (it can‘t work as an overall water protection)

If the float switch is activated, the light flashes to alert the user

The flashing of the light can be stopped by pressing any button, but theLED continues flashing until the fault cause disappears

After repairing the leak, the connection box has to be drained by pulling the plug from the drain hole

Filter Change

The carbon filter has a capacity of about 1000 litres, or 1 year, whichever comes first

The water quantity is estimated from the cummulated opening time of the main valve (750 minutes approx.)

The filter change LED will start lighting steadily when 20% of the capacity is left, and flashes when the filter is used up

To reset is the filter change LED, press the R.H. button for 5 seconds; resetting is possible only in the warning phase (LED lit or flashing)

Water quality permitting, the appliance can be operated without the carbon filter (which is connected into the water circuit via a crossflow valve)

Installation description

Water connectionConnect to a water ejector using standard connection hose.

Tighten by hand only.

Flush system for 2 – 3 minutes to evacuate air and to rinse system.

Installation of carbondioxide cartridge.Remove cabinet interior in front of service lid.

Mount adapter to cartridge, tighten by hand only.

Place cartridge in position.

Turn lever to secure bottle.

Installation of water filter cartridgePlace filter cartridge in position

Turn filter cartridge half a turn to lock (index in the plastic showing the correct position)

Preparation before use.Dispense 1,5 liters with “Carbonated water” as choice (to allow gas to enter)

Wait specified time before use to obtain maximum carbonation.

Changing and Installation of the CO2 Cartridge

Quick-manualChange/InstallClosed Open

Wiring

Component carrier, water control board. Position in top

SOURCEUser Interface („Water Module“)

SOURCEWater Control Board

is located under topcover

Self Test

After power reset, or after a power failure, the water module will always perform a self test

If all connections to the water module are OK, all LEDswill light sequentially, after which the dispenser lighting remains on, dimmed to 50%

CO2 Concentration vs Dispensed Volume at Different Pressures

Carbonation level vs. volume dispensed

4,0

4,5

5,0

5,5

6,0

6,5

7,0

7,5

8,0

0 0,5 1 1,5 2 2,5 3 3,5 4 4,5

Volume dispensed (litres)

Car

bond

ioxi

de c

onte

nt (

g/l

Carbonation level at 2,5 bar

Carbonation level at 4 bar

Capacity

Water system capacity

20

25

30

35

40

45

8 10 12 14 16 18 20 22 24 26 28

Capacity (litres/24 h)

Am

bien

t tem

pera

ture

(°C

)

Plain water maximum capacityCarbonated maximum capacityPlain water minumum capacityCarbonated water minumum capacity

Pull Down

Pulldown water system

20

22

24

26

28

30

32

34

36

38

40

42

44

46

2,00 2,50 3,00 3,50 4,00 4,50 5,00 5,50 6,00 6,50 7,00

Time (hours)

Am

bien

t tem

pera

ture

(°C

)

Plain water at 10 °CCarbonated water at 6 °C

Target Formulation, Water capacity – Update 00

• Capacity carbonated water 24h => 3,5 liter x 5 => 17,5 liter or;

• Capacity plain water 24h => 2 liter x 12 = 24 liter

• Mass dispensing carbonated water => 3,5 liter (1,75 liter - wait 5min –1,75 liter) recovery time < 5 h

• Mass dispensing plain water => 2,5 liter recovery time < 2 h

• Combination capacity 2,5 liter of plain water together with 2 liters of carbonated water recovery time < 5 h

• Dispensed carbonated water temp below 6 °C

• Dispensed plain water temp below 10 °C

• Tap water temperature 20 °C and ambient temperature 25 °C

Water Solubility CO2, Function of Pressure and Temperature

Quelle: Wikipedia

FAQ : Door

Can the consumer reverse the door himself?– No, not even a service engineer, but the tools will be prepared

so both left and right hinge definition can be supplied from thefactory.

– To start with, only 1 PNC will be available (right hinged) from the factory

Is the system off when the door is open?– No

46

FAQ : Water Filter

Filter specification?–Standard claims (Odour and taste, chlorine, sediments and rust) 1micron

Can I replace it easily?–Yes (Cost 40-50 Euro for a new one)

Is there a system to block the water when I am replacing the filter?Yes a “cross flow system”

How often shall it be replaced?1000l or 1 year

Where can I find it?At the retailers via Distriparts

Can the system still work if I do not put a filter in place?Yes

How do I know I have to change the filter?Filter Indicator

47

FAQ : CO2 Cartridge

Can I replace it easily?Yes

How often shall it be replaced?Every 75-100 liters

Where can I find it?At the retailers via Distriparts

How much does it cost?10 Euro (to buy new one 23 Euro)

Can the system still work if I do not replace the CO2 cartridge?Yes but without CO2

Does it make noise?Yes slightly bubbling noise when filling

How do I know I have to change the CO2 cartridge?Flat water without gas

Can the consumer adjust the carbonation level himselfOnly lower the CO2 level by “manually” adding plain water

48

FAQ : Refrigerator

•Is there an impact on the energy class?

• No, we will still be able to declare A-class, despite the loss of net volume

•What capacity do I loose in the fridge?•Approx. 24 liter

49

Problems and Solutions

If the pressure is <2,5 bars– Unstable carbonation process risk for no carbonation

If the pressure is > 5 bars– To much gas, decreased capacity of carbonated water

Solution– Communicate to the end consumer

– Sticker visible at the moment of buy» In order to have a stable carbonation process and good sparkling water, make sure

that your water pressure is between 2,5-6 bars. If you are unsure about your water pressure at home please contact…….

– Informing retailer, sales force/sales desk

– IFU

Planned Improvements

Actions to increase carbonation level at low water pressure– Increase overall flow by using larger riser tube

– New insert in the double valve and dispenser head valve + increased inner diameter of hinge pin + new insert of dispenser head valve orifice

– Adjustable restriction– New component and change of cover

– Smaller difference pressure– Variant of existing valve

Improved overall flow, possibility for end consumer to adjust carbonation level and higher lowest level of carbonation.

Pre-set from factory, but end consumer can adjust with the support from IFU

Timing => Verification ready Jan-06

Water Pressure Mapping, Conclusion

With a range of 2,5 – 6 bars we cover about 80% of the households in Europe– Based on the answers from the survey

UK and Ireland– Could be problem, larger part of the households with

pressure <2,5 bars