Borg & Overstrom U2 User manual

Install & Operation Manual
GB
Dispense options
Telephone
[phone]
Email
[e-mail]
borgandoverstrom.com
Synergy House
Fakenham Road
Morton On The Hill
NR9 5SP
Chilled
Ambient
Chilled & Ambient
Chilled, Ambient & Sparkling
Contents 2 Model Overview
4 Component/Feature Overview
6 Installation
16 Operation
21 Maintenance & Cleaning
26 Advanced Troubleshooting
27 Exploded Diagrams & Parts List
32 30-Litre - Technical Information
35 60-Litre - Technical Information
38 Declarations of Conformity

Install & Operation ManualBorg & Overström GB2
Model Overview
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.
Introduction
COOLING SYSTEM High efciency compression
system with capillary control.
Environmentally friendly R134A
refrigerant.
COLD TEMPERATURE 4°C to 8°C.
OUTPUT PER HOUR 30 litres cold and sparkling.
DISPENSE Multi-Neck Faucet with
ergonomically designed lever
controls for each tap.
MAX RUNNING POWER
CONSUMPTION
150 watt.
POWER SUPPLY IEC Power – Fused Socket.
WATER CONNECTION Mains in (5bar max) - 8mm quick
tting.
CO2 CONNECTION 4mm Quick Fitting.
DIMENSIONS (w x h x d) 245 x 365 x 375 mm
WEIGHT 16kg
CUPBOARD VENTILATION Recommended
30-Litre:
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 tted 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
lter needs to be replaced.

Borg & Overström GB3Install & Operation Manual
Introduction - Continued
COOLING SYSTEM High efciency compression
system with capillary control.
Environmentally friendly R134A
refrigerant.
COLD TEMPERATURE 2°C to 11°C.
OUTPUT PER HOUR 60 litres cold and sparkling at 10°C.
DISPENSE Multi-Neck Faucet with
ergonomically designed lever
controls for each tap.
MAX RUNNING POWER
CONSUMPTION
360 watt.
POWER SUPPLY IEC Power – Fused Socket.
WATER CONNECTION Mains in (5bar max) - 8mm Quick
Fitting.
CO2 CONNECTION 6mm Quick Fitting.
DIMENSIONS (l x w x h) 269 x 467 x 510mm
WEIGHT 26kg
CUPBOARD VENTILATION Recommended
60-Litre:
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.

Install & Operation ManualBorg & Overström GB4
Component/Feature Overview
Contents:
1 no Tap Tower
2/3 no Tap Spacers
2/3 no Tap Lever sets
1 no u2 Dispense Label Set
1 no u2 Tap Nut
1 no u2 Mounting Gasket
Please Note:
Mains Installation Kit & Filters are supplied as extra items according to individual ordering requirement.
Ambient water Pipe always Longest
u2 Tap - Major Components
Dispense
Lever
Threaded Stem
& Back Nut
Chilled Water Pipe
Main Body
Cold Water Tap
Ambient Water Tap
Sparkling Water Tap
Gasket
Ambient
Water Pipe
Sparkling Water Pipe

Borg & Overström GB5Install & Operation Manual
30-Litre - Major Components
Front Panel
Side Panels
Top Cover
Start-up Menu Key
Contents:
1 no Undercounter Unit
1 no 2.0m Power Cord Set
1 no CO2 Regulator with Gauge
60-Litre - Major Components
Side Panels
Contents:
1 no Undercounter Unit
1 no 2.0m Power Cord Set
1 no CO2 Regulator with Gauge
3 no Outlet Supply Pipes
Outlet Ports (Left to right):
• Sparkling Water Outlet
• Ambient Water Outlet
• Chilled Water Outlet
Front Panel
Top Cover
Power Connection
Back Panel
White pipe = Chilled Water Outlet
Blue pipe = Ambient Water Outlet
Black pipe = Sparkling Water Outlet
Water Inlet
CO2 Inlet
Cold Thermostat
On/Off Switch (For Chilled & Sparkling)
Power Connection
Water Inlet
CO2 Inlet Pipe

Install & Operation ManualBorg & Overström GB6
Installation
Tap Installation
1
2
Identify a suitable location for the undercounter unit. It
should be positioned within 1.0m of the faucet, and
within 2.0m of a suitable services connections:
Position correctly with at least 150mm behind
the unit, at least 150mm each side and 100mm
above.
Service Requirements
Water: Mains potable water – 2.0bar recommended. Min 1.0bar
Electricity: 13A supply – Earth Leakage Protected.
345
When planning and providing
for the connection to the
services, always allow for
easily accessible service isolator
ttings and for the position of an
external water lter.
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.
50mm/35mm
148mm
168mm

Borg & Overström GB7Install & Operation Manual
Also allow for the height
of the tap levers under any
overhanging cupboard/shelf.
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
ret the nut. Take care not to
over-tighten.
6
109
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 sufcient space for tting a
back nut to the faucet stem.
7
70mm
8
11
Fit optional Drip Tray at this
stage (if selected).
12
470mm

Borg & Overström GB8Install & Operation Manual
Tap Dimensions
Footprint Dimensions
126.5mm
120mm
Three Head
Tap 108mm
103mm
Two Head
Tap
240mm
470mm
200mm
150mm
215mm 240mm
470mm
200mm

Borg & Overström GB9Install & Operation Manual
Driptray Dimensions
400mm
A
250mm
430mm
220mm
56 mm 30 mm
1mm
Section A - A
12.7mm
Waste Spigot

Borg & Overström GB10Install & Operation Manual
30-Litre - Undercounter Unit Installation & Water Connection
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
specication section of this manual (see
page 44).
• If mains water is greater than 3.5 bar, a
pressure reducing valve (PRV) needs to
be tted to bring the pressure down to
3bar.
• Fittings and pipes for connection to the
water mains must be food certied.
Optional accessories such as lters and
pre-lters, to be assembled on the water
mains after the interception valve, must
also be certied for food compatibility.
1. Check the main components are present
as per the lists on pages 4 - 5.
2. Pre-ush and t the lter in an accessible
position.
3. Position the unit in place, ensuring it is
level and stable.
4. Connect the water supply pipe to the
tting 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 lter
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 t located on the dispenser
(see Fig1).
7. Connect the tap supply pipes to the outlet
pipes of the undercounter unit. (see g3)
8. Always allow adequate connecting pipe
length to enable the unit to be sufciently
moved for any future disconnection.
9. Turn on the tap making sure there are no
leaks along the supply line (see Fig2).
Fig 2Fig 1 Fig 3
Co2 Pipe
Tap
Elbows
Co2 Bottle
Water Pipes

Borg & Overström GB11Install & Operation Manual
60-Litre - Undercounter Unit Installation & Water Connection
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 specication
section of this manual (see page 47).
• 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 certied.
Optional accessories such as lters and
pre-lters, to be assembled on the water
mains after the interception valve, must
also be certied for food compatibility.
1. Check the main components are present
as per the lists on pages 4 & 6.
2. Pre-ush and t the lter 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” tting to connect
the water supply pipe provided with the
install kit to the mains.
6. Connect the water supply pipe to the
water supply tting.
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 lter 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 ll the ice bath up to
the ll markers. Once full ensure the lid is
replaced (see Fig 3).
10.Always allow adequate connecting pipe
length to enable the unit to be sufciently
moved for any future disconnection.
11.Connect the three tap supply pipes to the
outlet pipes of the undercounter unit (see
g4).
12. Open the shut off valve making sure there are
no leaks along the supply line (see Fig 2).
Fig 1
Water Inlet
Connection
(8mm PF)
Fig 3 Fig 4
Fig 2

Borg & Overström GB12Install & Operation Manual
Co2 Pipe
Tap
Water Pipes
Elbows
Co2 Bottle

Borg & Overström GB13Install & Operation Manual
Ventilation Grill Installation
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 tted
as supplied (or vent apertures formed) in
the cabinet to allow an airow as shown
below. Normally this should be enough for
all situations.
The air grilles tted (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 ow
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.
235mm
87mm
250mm
102mm

Borg & Overström GB14Install & Operation Manual
Option 3 - Front View (Air ow from side of cabient to worktop or opposite side panel).
Option 1 - Side View (Recommended air ow path from plinth to worktop).
Option 2 - Side View (Air ow from door or kick panel to worktop).
Airow via back
of unit past the
condensor
Vent grille in plinth
4
3
2
1
Option 1 - Front View (Recommended air ow path from plinth to worktop).
Vent grille behind tap
Vent grille in plinth
Vent grille behind tap
Vent grille behind tap
Airow via back
of unit past the
condensor
Vent grille in plinth

Borg & Overström GB15Install & Operation Manual
General Safety
• Always place the dispenser in its
vertical position, on a surface which
can capably support its weight.
• During use this machine must remain
in its upright position.
• Always leave a space no less
than 15cm between the wall and
dispenser.
• Keep the machine away from
sunlight, heat and moisture.
• Power and water supply points must
be available near the dispenser,
and must meet the criteria specied
in the ‘Specication’ section of this
manual.
• The environment where this machine
is installed must be free of dust and
corrosive/explosive gases.
• After extended disuse (more than
15 days) of the dispenser it may be
necessary to unplug and thaw the
machine.
• Ensure adequate ventilation if the
unit is placed in a cupboard.
15cm

Install & Operation ManualBorg & Overström GB16
Operation
Use the valves on the sides of the taps to increase or decrease ow rate. Lever in the upright position is fully closed.
Ambient Water
Tap
Functions & Controls
SparklingWater Tap
Cold Water Tap
Flow Restrictor Lever
OPEN OPEN
CLOSED

Borg & Overström GB17Install & Operation Manual
30-Litre - Initial Cold Water Operation
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 page 20).
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.
30-Litre Controls
Power Connection Socket
Note: the 30-Litre undercounter unit
automatically powers up when the
power lead is connected.
30-Litre - Temperature Control
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:
1 bleep 4°C
2 bleeps 6°C
3 bleeps 8°C
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
conrm the setting is saved.
Fig 1 Fig 2
3
secs

Borg & Overström GB18Install & Operation Manual
60-Litre - Initial Cold Water Operation
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, ll 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 lling
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
lling 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 page 26).
Fig 1 Fig 2
0
1
2
3
4
5
6
7
Cold Thermostat
Turn clockwise to decrease water
temperature
60-Litre Controls
On/Off Switch
(For Chilled & Sparkling)

Borg & Overström GB19Install & Operation Manual
30-Litre - Disposable CO2 Bottle Installation
It will be necessary to leave the machine for
up to 1 hour for sparkling water to develop,
by absorbing the CO2.
Unpack CO2 Regulator and t elbow tting
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.
Stand the cylinder in a suitable place. Flush through approximately 10 litres of
water using the sparkling dispense lever,
check and adjust the CO2 pressure
accordingly.
Connect the assembled CO2 bottle and
regulator to the 4mm CO2 inlet pipe.
After completing the water installation, turn
on the soda power switch and the pump
will run. Allow the carbonation tank to ll.
(The carbonation pump will run for up to 2
minutes).). We recommend between 3.5 - 5
bar (max). Do not exceed 5 bar pressure.
5 Max bar
2 3
456
7
1
hour
10 L
1

Borg & Overström GB20Install & Operation Manual
30/60-Litre - Rellable CO2 Bottle Installation
NOTE:
• Before connecting the CO2 bottle ensure
the gas being used is food certied.
• 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 rellable CO2
bottle is being used screw the pressure
reducer on to the gas bottle with a
spanner (28mm). If however a single-
use gas bottle is in operation, screw the
reducer on to the bottle by hand.
3. If using a rellable gas bottle open it
by turning the upper hand grip counter-
clockwise (item1- g 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
t 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- g 2).
7. Turn the black handle of the pressure
reducer clockwise (turning towards the +
sign) (item 2- g 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 Rellable 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- g 2).
3. Close the pressure reducer by turning the
knob anticlockwise (item2- g 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 rmly.
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 page 5 or 6).
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
2
1