The u2 is a robust, simple to operate and maintain multi-headed tap with an aesthetically striking design.
The under-counter dispensers supplied with this tap are manufactured with

the most modern and innovative technologies. All the materials and components are tested during the entire
production process in order to satisfy all expectations.

With its low noise characteristics this unit can be installed in any environment where limited space is an issue. It is controlled by microprocessor which, via specially fitted sensors, will notify the user of any malfunctions and automatically turn off the dispenser when dangerous conditions arise. A separate monitoring system will also let the operator know when the water filter needs to be replaced.

Using “Ice Bank” technology this unit can dispense up to 60 litres of water per hour, completely satisfying the demand of small, medium and large restaurants and catering areas with high performance and a compact design.

Please Note: Mains Installation Kit & Filters are supplied as extra items according to individual ordering requirement. Ambient water Pipe always Longest.

Contents:
1 no Undercounter Unit
1 no 2.0m Power Cord Set
1 no CO2 Regulator with Gauge

Contents:
1 no Undercounter Unit
1 no 2.0m Power Cord Set
1 no CO2 Regulator with Gauge
3 no Outlet Supply Pipes

When planning and providing for the connection to the services, always allow for easily accessible service isolator fittings and for the position of an external water filter.

Identify a suitable position for the tap. A 50mm (max) hole is required for a three headed tap, and a 35mm (max) hole for a two headed tap.

When positioning to drain over an existing sink bowl, allow for the reach of the tap levers or otherwise the position of any optional drip tray. 168mm to middle tap, 148mm to outside taps.

Also allow for the height of the tap levers under any overhanging cupboard/shelf.

Allow for the space needed for forming the required hole. Relate the selected position to the underneath of the counter and check for any obstructions.

Allow sufficient space for fitting a back nut to the faucet stem.

Carefully form the needed hole using the correct type of cutter for the work surface material.
Observe all local occupational health and safety requirements.

Remove the back nut from the tap and carefully feed the connecting pipe tails through the hole formed in the work surface. Ensure the rubber gasket is positioned correctly on the base of the tap.

With the tap in position carefully refit the nut. Take care not to over-tighten.

Fit optional Drip Tray at this stage (if selected).

NOTE:

• • Any temporary water connections are detrimental to the correct functioning of this dispenser.
  • During installation only new water supply pipes must be used. The water supply line for this dispenser must consist of an interception valve (tap) and non-return valve.
  • For the correct and safe functioning of this dispenser, the water mains must satisfy the criteria detailed in the specification section of this manual (see Specification-30 Litre).
  • If mains water is greater than 3.5 bar, a pressure reducing valve (PRV) needs to be fitted to bring the pressure down to 3bar.

• Fittings and pipes for connection to the water mains must be food certified. Optional accessories such as filters and pre-filters, to be assembled on the water mains after the interception valve, must also be certified for food compatibility.

1. Check the main components are present as per the Major Components Diagrams content lists
2. Pre-flush and fit the filter in an accessible position.
3. Position the unit in place, ensuring it is level and stable.
4. Connect the water supply pipe to the fitting supplied in the install kit.
5. Once connected to the mains, position a suitable container at the open end of the supply pipe and turn on the water to drain and clean the tube; clear the external filter and other outer accessories (if attached) by draining at least 2 litres of water. After this operation turn off the tap.
6. Connect the open end of the tube to the 8mm push fit located on the dispenser (see Fig1).
7. Connect the tap supply pipes to the outlet pipes of the undercounter unit. (see fig3)
8. Always allow adequate connecting pipe length to enable the unit to be sufficiently moved for any future disconnection.
9. Turn on the tap making sure there are no leaks along the supply line (see Fig2).

Fig 1

Fig 2

Fig 3

NOTE:

• Any temporary water connections are detrimental to the correct functioning of this dispenser.
• During installation only new water supply pipes must be used. The water supply line for this dispenser must consist of an interception valve (tap) and non-return valve.
• For the correct and safe functioning of this dispenser, the water mains must satisfy the criteria detailed in the specification section of this manual (see Specification – 60 Litre).
• If the pressure of the water mains is greater than 3.5 bar, it will be necessary to install a pressure reducer after the interception valve, setting the pressure to 3 bar. Pressure peaks greater than 6.5 bar may cause the safety valve to open.

• Fittings and pipes for connection to the water mains must be food certified.
  Optional accessories such as filters andpre-filters, to be assembled on the water mains after the interception valve, must also be certified for food compatibility.

1. Check the main components are present as per the Major Components Diagrams content lists
2. Pre-flush and fit the filter in an accessible position.
3. Position the unit in place, ensuring it is level and stable.
4. Screw the non-return valve on to the shut off valve along with the pressure reducer if necessary.
5. Use the 1/2” or 3/4” fitting to connect the water supply pipe provided with the install kit to the mains.
6. Connect the water supply pipe to the water supply fitting.
7. Once connected to the mains, position a suitable container at the open end of the supply pipe and open the shut off valve to drain and clean the tube; clear the external filter and other outer accessories (if attached) by draining at least 5 litres of water. After this operation close the shut off valve.
8. Connect the free end of the pipe to the water inlet point on the dispenser (see Fig1).
9. Remove the lid and fill the ice bath up to the fill markers. Once full ensure the lid is replaced (see Fig 3).
10. Always allow adequate connecting pipe length to enable the unit to be sufficiently moved for any future disconnection.
11. Connect the three tap supply pipes to the outlet pipes of the undercounter unit (see fig4).
12. Open the shut off valve making sure there are
    no leaks along the supply line (see Fig 2).

Fig 1

Fig 2

Fig 3

Fig 4

When Borg & Overström u2 undercounter units are installed inside a cabinet or housing, adequate ventilation is recommended to ensure that they operate satisfactorily.
During a cooling cycle it is normal for the unit to produce heat and the purpose of the ventilation is to provide a supply of air that can absorb the generated heat which otherwise will accumulate inside the cabinet or housing and reduce the cooling
performance of the unit. The amount of heat generated by the cooling cycle depends directly upon the amount of usage – the higher the usage, the more heat produced.

To provide adequate ventilation we recommend that air grilles/vents are fitted as supplied (or vent apertures formed) in the cabinet to allow an airflow as shown below. Normally this should be enough for all situations.

The air grilles fitted (or vent apertures formed) should each have a ventilation area equal to or greater than 25000mm2 and the air circulation path inside the cabinet/housing must be unobstructed. (eg: a vent grille with an overall size of 250mm x 100mm).

It is recommended that an inlet vent grille is set into the plinth with a corresponding vent grille in the base of the cabinet behind the undercounter unit to allow the air to flow past the condenser. An exhaust vent grille is

also required at the top if the cabinet. It is recommended either behind the tap in the work surface or at the side of the cabinet for a more unobtrusive appearance should this area be available.

Option 1 – Side View (Recommended air flow path from plinth to worktop).

Option 2 – Front View (Recommended air flow path from plinth to worktop).

Option 3 – Side View (Air flow from door or kick panel to worktop).

Option 4 – Front View (Air flow from side of cabient to worktop or opposite side panel).

We recommend you check the dimensions of the tap and driptray using the cutting template prior to cutting the work surface.

Download or order the cutting template here 

Use the valves on the sides of the taps to increase or decrease flow rate. Lever in the upright position is fully closed.

After carrying out the installation procedures detailed in the previous chapter, run the initial cold water operation as follows:

1. Ensure the CO2 bottle is properly connected to the dispenser (see 30/60-Litre – Refillable CO2 Bottle Installation).
2. Place a container with a capacity of 5 litres under the tap.

3. Dispense at least 3 litres of both ambient and chilled water.

The cold water temperature control has 3 settings – 4c, 6c and 8c. The undercounter unit is factory set to 6c.

If any adjustment is required, please carry out the following steps:
1. Locate the button on the back top left of the unit (see Fig1).
2. Press and hold the button for approximately 3 seconds until you hear the signal beep, continue to hold whilst counting the number of bleeps. Use adjacent table to set the temperature:

3. To change the setting, each additional press of the same button will select one of the alternative settings. This will be shown by the 3 LEDs in the above image.
4. Release the programming button to save the selected setting.
5. Press and hold the programming button again and count the number of bleeps to confirm the setting is saved.

Fig 1

Fig 2

After carrying out the installation procedures detailed in the previous chapter, run the initial cold water operation as follows:

1. Lift the upper plastic cover off of the dispenser by pulling it up.
2. If not done already, fill the ice tank with clean water paying special attention not to wet any of the electrical components.
3. Fill the ice tank to the arrow that indicates the maximum level (see Fig 1). After filling the tank do not move the dispenser as doing so could cause water to spill from the tank. NOTE: if this device is operated without water in the ice tank it will cause
serious damage to the machine.
4. Dry any drops or splashes caused by filling the ice tank.
5. Pull the ring of the safety valve on the carbonator, releasing gas for at least 2/3 seconds (see Fig 2).
6. Open the water shut off valve on the supply line.

7. Place a container with a capacity of at least 5 litres under the dispensing taps.
8. Dispense at least 3/4 litre of ambient still water, and at least 3/4 litre of chilled water.
9. Position the thermostat switch to number 7, and wait for 2 – 3 minutes.
10.Position the 5 litre container under the sparkling water tap and dispense until only gas comes out.
11.Replace the upper plastic cover and wait for 90 – 120 minutes before dispensing water again so ice may form in the tank.
12.Once started the device must be left operating permanently. If the power supply is interrupted for more than 2 – 3 hours it could cause faults within the ice tank and consequently freeze the water coil. NOTE: If a similar anomaly occurs follow ice bank
defrosting procedure (see Ice Tank Defrosting & Emptying – 60 Litre).

Fig 1

Fig 2

Turn clockwise to decrease water temperature

Unpack CO2 Regulator and fit elbow fitting to spigot outlet.

Attach the regulator to the disposable CO2 bottle, ensuring the small pressure relief vent in the stem is facing away from you or anyone else. Ensure the regulator is closed. Hand tighten securely.

Connect the assembled CO2 bottle and regulator to the 4mm CO2 inlet pipe.

Stand the cylinder in a suitable place.

After completing the water installation, turn on the soda power switch and the pump will run. Allow the carbonation tank to fill. (The carbonation pump will run for up to 2 minutes). We recommend between 3.5 – 5 bar (max). Do not exceed 5 bar pressure.

Flush through approximately 10 litres of water using the sparkling dispense lever, check and adjust the CO2 pressure accordingly.

It will be necessary to leave the machine for up to 1 hour for sparkling water to develop, by absorbing the CO2.

It will be necessary to leave the machine for up to 1 hour for sparkling water to develop, by absorbing the CO2.

NOTE:

• Before connecting the CO2 bottle ensure the gas being used is food certified.
• Do not lay the CO2 bottle on its side whilst attaching the pressure reducer, make sure it is always in an upright position when carrying out this task.
• Always ensure the reducer’s working pressure is higher than the cylinders max pressure.
• Do not place hands or any other part of the body near the gas as this may cause freeze burns.
• A small amount of gas leakage during set up/replacement is normal.

1. Connect the assembled CO2 bottle and regulator to the CO2 inlet on the rear panel (60L) using a 6mm pipe or side panel (30L) using the 4mm pipe (see Fig1)
2. In instances where a refillable CO2 bottle is being used screw the pressure reducer on to the gas bottle with a spanner (28mm). If however a singleuse gas bottle is in operation, screw the reducer on to the bottle by hand.
3. If using a refillable gas bottle open it by turning the upper hand grip counterclockwise (item1- fig 2).
4. Ensure the CO2 bottle is securely connected to the dispenser using the 4mm plastic tube.
5. Insert one end of the tube into the quick fit coupling at the rear or side of the machine, and the other connected to the reducer of the gas bottle.
6. Open the gas bottle by turning the upper hand grip counter-clockwise (item1- fig 2).
7. Turn the black handle of the pressure reducer clockwise (turning towards the + sign) (item 2- fig 2).
8. Check that any connection points are free of leaks using soapy water.

Adjusting Sparkling Water
By adjusting the pressure reducer it is possible to increase or decrease the amount the amount of CO2 present in the water; the optimal recommended values range from 2 – 5 bar. A higher pressure will increase the amount of carbonation in the water, with a lower pressure producing ‘slightly sparkling’ water. CO2 pressure must be set at +0.5Bar> incoming water pressure.

Replacing a Refillable CO2 Tank

1. Detach the CO2 bottle from any supporting chains or belts.
2. Close the valve at the top of the bottle by turning it clockwise until completely locked (item1- fig 2).
3. Close the pressure reducer by turning the knob anticlockwise (item2- fig 2).
4. Remove the CO2 pipe from the pressure reducer, and detach the other end from the dispenser.
5. Screw the adapter (optional) for the external CO2 bottle to the new pressure reducer and tighten it firmly.
6. Connect one end of the new CO2 pipe to the pressure reducer and the other to the appropriate connection point on the dispenser (see Major Components Diagrams).
7. Screw the ring nut of the adapter assembled on the pressure reducer to the CO2 bottle.
8. Open the valve at the top of the new CO2 bottle.
9. Reattach any chains or belts removed from the bottle and return it to its normal position.
10. Check for leaks using soapy water.

Fig 1

Fig 2

NOTE: All maintenance operations must be carried out with the dispenser switched off. This operation must only be carried out by trained staff. Every 6 months a sanitisation procedure is recommended as follows:

Turn off incoming mains water.

Briefly dispense cold/ambient water to release internal water pressure from the machine.

Remove the existing filter.

Use Bioguard Hand Gel and put on protective gloves.

Add 25 ml of Bioguard Internal Sanitisation fluid to a clean and empty service filter cartridge.

Connect to filter head.

Turn on incoming water, allow service cartridge/doser to fill.

Dispense water using the cold dispense lever until the water appears pink. Briefly dispense using the ambient lever too.

Leave the solution inside machine for sanitisation to take effect (minimum 5 minutes) while thoroughly cleaning the machine externally.

For this we recommend the use of Bioguard Foam Descaler & Sanitiser Spray.

Pay particular attention to the dispense faucets and the tap levers. For this use Bioguard External Sanitiser & Clear Spray and Sanitising Wipes.

Attend to any cosmetic marks with Bioguard Rejuvenator & Protector as needed.

Remember to include the drip tray. If a Waste Overflow System is fitted, empty this and flush through with a small amount of sanitisation fluid if needed.

When the external cleaning (minimum 5 minutes) is
completed, flush the machine using the cold dispense lever with clean water until the dispense water runs clear. Repeat briefly with the ambient button.

Turn off water and remove the service filter. Retain service filter for reuse.

Fit new filter. Turn on incoming water supply and reconnect the power.

Pre-flush the new filter to waste using the ambient dispense lever until the water appears clear and is free of air. Flush through a small amount of water to check
all functions.

NOTE: Chilled & Ambient models do not drain. Direct Chill water is situated in a factory sealed tank.

Turn off the water supply.

Pull and hold the Sparkling water dispense lever until all the water is expelled and only CO2 gas is being released.

The tank is empty of sparking water when only CO2 is being released.

Ensure to release the Sparkling water dispense lever and take care to avoid releasing excess amounts of CO2 gas as this may damage the tank.

Please make sure the machine is completely disconnected from electricity before carrying out any maintenance work.

Turn of the water supply.

Remove the top cover of the water dispenser.

Siphon the water from the cold tank into a suitable container.

Turn off the chilled and sparkling switch at the rear of the machine.

Turn off the water supply.

Pull and hold the Sparkling water dispense lever until all the water is expelled and only CO2 gas is being released.

The tank is empty of sparking water when only CO2 is being released.

Ensure to release the Sparkling water dispense lever and take care to avoid releasing excess amounts of CO2 gas as this may damage the tank.

Should the icebank require defrosting we recommend the following procedure:

1. Keeping the power switch on, turn the thermostat to 0.
2. Make sure water is frequently dispensed from the chilled water tap.
3. Leave the device turned on for at least 12 – 24 hours.
4. Check there is no ice in the tank.
5. Set the thermostat to 6 or 7 and wait at least 90 – 120 minutes before refilling the ice tank.
6. After defrosting shut off the water supply, the CO2 gas, and remove

the power plug.
7. Locate a rubber tube approximately 2m long and a large container.
8. Insert one end of the tube into the bottom of the ice tank and siphon the water through the tube letting it flow in to the container.
9. Ensure the ice tank is completely emptied.

NOTE: Do not remove water from the ice tank by tilting the machine. Water could spill from the tank and cause damage to electrical components within the machine.