Borg & Overstrom b4 User manual

Contents
Install & Operation Manual
AU
Dispense options Chilled & Ambient
Chilled, Ambient & Hot
Chilled, Ambient & Sparkling
Chilled, Hot & Sparkling
Telephone
[phone]
Email
[e-mail]
borgandoverstrom.com
Synergy House
Fakenham Road
Morton On The Hill
NR9 5SP
Chilled
Ambient
2 Model Overview
2 Introduction
3 Controls
4 Floor standing Version
5 Installation
5 Major Components
5 Water and CO2 Connection
6 Level Sensor Assembly
7 Operation
7 Water Connection & Operation
9 CO2 Bottle Installation
10 Functions & Controls
10 General Safety
11 Maintenance
11 Isolation & Removal
12 Sanitisation Guide
13 Leak Detection
14 Emptying the Carbonation Tank
16 Advanced Troubleshooting
21 Exploded Diagrams
28 Technical Information
28 Electrical Circuit Diagrams
32 Flow Diagrams

B4.2 Install & Operation ManualBorg & Overström AU2
Model Overview
© Copyright Borg & Overström.
This manual is printed by Borg & Overström and shall not be reproduced or copied in anyway.
All Models
All models are self-contained machines with
robust steel framed cabinets and attractively
injection moulded plastic
front, side and top panels. An IEC Power
Lead is supplied for connection to the IEC
socket located at the rear of all models (
An additional Schuko type is supplied for
the European market).
The B4 must be tted with Watermark
compliant ttings included in Part
No. 461263 - AU Installation Kit.
This kit is in accordance with
AS/NZS 3500.1 & AS/NZS 3500.2.
This must contain a dual check valve
& a pressure limiting valve regulated
to 350kPa.
The incoming water supply should
be between 5-25 degrees Celsius.
Chilled
Water is fed into the insulated cold
tank under mains pressure. The cold
tank is chilled via the evaporation coil
of the capillary controlled refrigeration
compression system. The cold temperature is
thermostatically controlled via the adjustment
screw on the cold thermostat. This is factory
set and it is not necessary
to adjust in most cases (see Controls).
Ambient
Water bypasses the cold tank for the
ambient dispense.
Sparkling
Water is chilled as it passes through the
Direct Chill coil. It is pumped under pressure
into the carbonator which is tted within the
Direct Chill coil. The carbonator is also level
controlled. The Deep Sparkle effect occurs
through saturation with CO2.
All models also incorporate a leak detection
device within the unit which disables the
dispense function until rectied.
Hot
Hot water is provided by a hot water tank
with an integrated heater element. The
water is supplied directly into the tank under
the pressure as connected into the back
of the unit. The water lls the tank and hot
water is dispensed by displacement. The
water ow is controlled by a solenoid.
Direct Chill
Borg & Overström Direct Chill utilises
innovative technology to chill water
instantly. We recommend this system for
more demanding environments because
of its optimum dispense performance and
unrivalled hygienic qualities. Superior to
the gravity fed Reservoir system, Direct Chill
technology chills water on demand for the
ultimate drinking experience.
Introduction
A range of compact water dispensers, available in the following operational types:
• Direct Chill Chilled & Ambient (Low Pressure Tank System)
• Direct Chill Chilled, Ambient & Hot (Low Pressure Tank System)
• Direct Chill Chilled & Ambient
• Direct Chill Chilled, Ambient & Hot
• Direct Chill Chilled, Ambient & Sparkling
• Direct Chill Chilled, Hot & Sparkling
The B4 model is available as a countertop with a matching base cabinet in three colours.

B4.2 Install & Operation ManualBorg & Overström AU3
Controls
Factory set to:
Cold Thermostat
NB: Turn clockwise to decrease water temperature
-C
+C
Chilled
Chilled On/Off Switch: at upper rear of
machine, switches cooling operation on/off.*
Cold Thermostat: at rear of machine.
Chilled Button: Press to dispense cold water.
Chilled LED: Indicates chilling application is
switched on.
10A Fuse: On rear of machine, integral with
IEC socket.
*All Direct Chill variants incorporate an
auto-ll system
Ambient
Ambient Button: Press to dispense
ambient water.
Sparkling
Carbonation On/Off switch: Switches sparkling
operation on/off.
Sparkling Button: Press to dispense sparkling water.
Sparkling LED: Indicates sparkling application
is switched on.
Hot
Hot On/Off Switch: The hot water heating
mode is controlled by a switch on the back of
the unit, next to the cooling mode switch.
Hot Thermostat: regulated by a pre-set, non-
adjustable sensor on the tank.
Hot Button (incorporates safety lock): Press once
to unlock. Press again to dispense hot water.
(Note: Machine will revert to locked after 5
seconds if dispense is not activated.)
Hot LED: Indicates hot application is switched on.
Before installation
Allow adequate space to install the appliance.
Ensure the services are in place prior to installation.
Minimum
1340mm Minimum
590mm
Minimum
590mm
Minimum
420mm
Minimum 420mm
Minimum 420mm
1/2” Shutoff
Valve 13 Amp
Socket
13 Amp
Socket
1/2” Shutoff
Valve

B4.2 Install & Operation ManualBorg & Overström AU4
Floor standing Version
1
2 3
All models are designed to t straight
onto the top of the base cabinet to create
a oorstanding model.
Ensure the feet are in the nesting
positions.
The Door Panel is hinged and fastened
with Magnetic Catches. The cabinet
can be levelled using the adjustable
feet. Service entry is at the back of the
machine.
Every Base Cabinet is supplied with a
Level Sensor Kit, comprising of:
• A water container.
• Sensor unit (c/w 2 no. CR3032
batteries). (Requires some assembly – see
page 7.
• Drip Tray with Drainage Outlet.
• Interconnection kit between unit
and cabinet – see page 25.

B4.2 Install & Operation ManualBorg & Overström AU5
Installation
Major Components
Water & CO2 Connection
Lid
Sparkling Water Tank
Cold Water Tank
Control Panel Hot Water Tank
(Behind the front panel)
Carbonation Switch
On/Off Switch
IEC Power Socket
CO2 Connector (1/4”)
Inlet Water (1/4”)
Cold Drain Port
Hot Drain Port
Caution when draining hot tank
Drip Tray

B4.2 Install & Operation ManualBorg & Overström AU6
Level Sensor Assembly
PANASONIC
CR 2032
3V PANASONIC
CR 2032
3V
Check all parts are present. Unscrew lid. Fit both batteries and ret lid.
Exchange the drip tray. Connect the drainage tubing that is
pre-tted down the front left hand side of
the cabinet.
Level sensor positioned in container.
1 2 3
4 5 6
NOTE: A WARNING TONE WILL SOUND WHEN THE WATER RISES (3 BEEPS EVERY
15 SECONDS REPEATED). UPON EMPTYING THE CONTAINER THE WARNING TONE
WILL STOP. CONTINUAL BEEP INDICATES LOW BATTERY POWER.

B4.2 Install & Operation ManualBorg & Overström AU7
Operation
4
Water Connection & Operation
All hot & sparkling tanks must
be purged of air by holding the
corresponding button. Do not
switch the hot system on until
tank has been purged.
4
borg&overström
The relevant indicator lights will
be lit.
6
Connect and turn on the water
supply. Then connect the power
supply.
1
Press and hold the cold water
button until water comes out.
3
On sparkling models turn on the
carbonation switch on the back
of the unit.
COLD
5
To avoid damage do not turn on
the cold or hot power switches
until water ows out of the
machine. (If applicable)
2
COLD
HOT
NOTE: Water supply to the product must be within 1.5 - 3.5 bar.
A pressure limiting valve and dual check valve in accordance with
AS/NZS 3500.1 & AS/NZS 3500.2 must be used for all incoming
water supplies. This is included in Part No. 461263 - AU Installation Kit.
If the product is installed where the mains water pressure is less than 1.5 bar
then a pressure boost pump must be installed prior to the water inlet bulkhead.
Failure to comply with this will invalidate your warranty.

Borg & Overström AU8B4.2 Install & Operation Manual
Water Connection & Operation (Continued)
Flush through 5 litres of clean
water through each water option
immediately after installing and
before use.
7
5 L
borg&overström
When the cold water switch
is turned on, the cold water
indicator will be lit.
8
The temperature of cold water
can be set from 4c to 11c.
Allow up to 1 hour for the
water to reach its minimum
temperature.
9
1
hour
COLD
4c
11 c

B4.2 Install & Operation ManualBorg & Overström AU9
5
COLD
CO2 Bottle Installation (Sparkling Versions Only)
IMPORTANT! ALWAYS ENSURE SECURITY CLIPS ARE USED
ON ALL WATER AND CO2 CONNECTIONS.
OFF
10 L 1
hour
Attach the regulator to the disposable
CO2 bottle, ensuring the regulator is
closed.
Connect the assembled CO2 bottle and
regulator to the machine using 1/4 inch
pipe.
After completing the water installation,
turn on the sparkling power switch and
the pump will run. Do not open the
regulator valve until the carbonated
switch has been turned on.
Flush through approximately 10 litres of
sparkling water. Check and adjust the
CO2 pressure accordingly.
Following installation, it will be necessary
to leave the machine for up to 1 hour for
the initial chilling cycle to occur.
1 2
3
6
We recommend between 3.5 - 4 bar.
Do not exceed 4 bar pressure.
4 Max
bar
4

B4.2 Install & Operation ManualBorg & Overström AU10
Functions & Controls
General Safety
15cm
• Leave a space no less than 15cm
between the wall and dispenser.
• When combined with base cabinet -
use wall bracket kit for high trafc areas.
• Keep the machine away from sunlight,
heat and moisture.
Chilled Water
Button
Hot Water
Button
Sparkling Water
Button
Sparkling LED
Hot LED
borg&overström

B4.2 Install & Operation ManualBorg & Overström AU11
Maintenance
Isolation & Removal
12
Turn off the water supply.
3
Please make sure the machine is completely
disconnected from the electrical supply before
carrying out any maintenance work.
To drain the Direct Chill tank, remove the caps on the back of the machine.
We recommend they are retted immediately upon draining being completed.
Cold water drain
Hot water drain
Caution when
draining hot tank

B4.2 Install & Operation ManualBorg & Overström AU12
Sanitisation Guide
Borg & Overström’s recommended sanitisation schedule is a minimum of 6 months
for a lter change and internal water pathway sanitisation using Sterizen® 75 uid
(Order code: 461007), and a minimum weekly for external cleaning, using
Sterizen®Sanitising Solution (Order code: 500023).
NOTE: Failure to use sanitising products and processes approved by Borg & Overström
will invalidate your warranty. Before beginning the sanitation process please ensure that
water is turned off at the mains and refer to the sanitisation liquid MSDS documentation
for further information. Use bioguard hand gel and ensure gloves are worn.
234
5
borg&overström
78
Briey press cold/ambient
dispense buttons to release
internal water pressure from
the machine.
Remove the existing cartridge. Add 25 ml of Bioguard
Internal Sanitisation uid to a
clean and empty service lter
cartridge.
Connect the service cartridge
to machine.
Turn on incoming water, allow
service cartridge/doser to ll.
Dispense water using the
cold button until the water
appears pink. Repeat with
sparkling button if present.
Briey press the ambient
button too.
Leave the solution inside
machine for sanitisation
(minimum 5 minutes) while
thoroughly cleaning the
machine externally, pay
particular attention to the
dispense faucet and buttons.
If a Waste Overow System
is tted, empty this and ush
through with a small amount
of sanitisation uid if needed.
Remember to include the drip
tray and connecting pipe work.
PINK
1
6

Borg & Overström AU13B4.2 Install & Operation Manual
Please note that this sanitisation uid contains an
active caustic/alkaline agent.
Always use responsibly and with care remembering
that due to its alkaline nature unnecessary
concentrated/prolonged contact with any materials,
including metals, can cause damage. Always rinse
all contact surfaces after use with clean water.
Avoid skin contact and wear
protective gloves when han-
dling sanitisation uids
In the event of any skin
contact, ush immediately
with clean, cold water
Sanitisation Guide (Continued)
10 11 12
When the external cleaning
(after a minimum of 5 minutes)
is completed, ush the machine
using the cold, sparkling and
ambient button with clean
water until the dispense water
runs clear.
Turn off water and remove the
service lter. Retain service
lter for reuse.
Fit new lter. Turn on incoming
water supply.
Pre-ush the new lter to waste
using the ambient button (and
sparkling button if present)
until the water appears
clear and is free of air. Flush
through a small amount of
water to check all functions.
9

B4.2 Install & Operation ManualBorg & Overström AU14
Leak Detection (power cut off) - All Variants
Enhanced Leak Detection (Flood prevention) Available as Optional Extra.
NOTE: If this machine is equipped with a leak detection device. When leaking is
detected the dispense operation will be cut off automatically.
45
HOT
6
To reset:
Unplug the machine. Locate the source of leakage
and rectify.
Locate the detection probe which
can be found in the bottom rear
left hand corner. Dry the probes
and internal area with a dry cloth.
If enhanced Leak Detector is
tted as optional extra: locate
the Leak Detector valve.
Reset the red lever (push it in). Reconnect the power to machine
and test operation.
123
If leak detector is fitted as optional extra, reset the red lever (push it in)

B4.2 Install & Operation ManualBorg & Overström AU15
Emptying the Carbonation Tank for Transportation
CO LD
1
Switch off the Carbonation System switch on the
back of the unit.
Press and hold the Sparkling water dispense
button until all water is expelled.
The tank is empty of sparking water when only
CO2 is being released.
Ensure to release the Sparkling water button and
take care to avoid releasing excess amounts of
CO2 gas.
2
3 4

B4.2 Install & Operation ManualBorg & Overström AU16
Advanced Troubleshooting
Fault Diagnosis: No Water Dispenses
Problem/Report Possible Cause Suggested Action
From Ambient Dispense Water Supply turned off Check all that taps/valves/ lters
on the incoming supply are tted
and are turned on.
“Waterblock” tripped off (and tank
empty).
Reset “Waterblock” (and check for
any leaks).
“Leak detector” (if tted) tripped off
(and tank empty).
Disconnect the power and water
supply, reset the machine (check
for leaks).
Solenoid not working Dismantle and check the solenoid,
completely replacing the solenoid
as necessary.
No Electricity/Power Supply. Check power cord is
connected and live. Check
machine is switched on.
Blocked tank outlets/pipes. Check and unblock or replace as
needed.
Control PCB not working Check/replace Control PCB
From Cold Dispense Firstly all as for Ambient Dispense. Carry out checks and actions as for
ambient dispense.
Chiller tank frozen – Thermostat set
too low.
Thaw out the machine and increase
cold water temperature.
Chiller tank Frozen - Thermostat not
working.
Thaw out the machine and check
thermostat. Replace Cold Water
thermostat as needed.
Chiller tank frozen. Circulation pump not working /
Thaw out the machine and check
circulation pump. Replace
circulation pump as needed.

B4.2 Install & Operation ManualBorg & Overström AU17
Problem/Report Possible Cause Suggested Action
From Hot Dispense Firstly all as for Ambient Dispense. Carry out checks and actions as
for ambient dispense.
Airlock in dispense pipe work. Unblock/replace hot water pipe
and hot vent pipe.
Tank lled with limescale. Replace tank.
From Sparkling Valve Firstly as for ambient and cold
valve.
Carry out the checks and actions as
for cold and ambient.
Low or no CO2. Check and replace cylinder as
necessary.
Pump not operating. Check carbonator level control
system.
Check probes connected/Leads
attached. Check power supply to
pump.
Carbonator Tank over pressurised
with CO2.
1. Switch the Sparkling System off.
2. Shut off CO2 supply.
3. Press the Sparkling Water button
to release CO2 from carbonator.
4. Switch the Sparkling system on.
5. Check pump operation is
running normally.
6. Wait for the pump to stop
running.
7. Re-open CO2 supply.
Pump Feed Solenoid Valve. Check function/condition and
repair/replace accordingly.
Carbonation System switched off. Switch on (Switch on back of the
machine).

B4.2 Install & Operation ManualBorg & Overström AU18
Fault Diagnosis: Water Dispenses
but not Correct Temperature
Problem/Report Possible Cause Suggested Action
Ambient Water too Warm Low usage and/or heat from
compressor inuencing stored
water.
Check tank insulation and/or
advise customer.
High usage and/or water supply
pipe in warm ducting.
Advise customer.
Cold Water not Cold Cooling switched off. Check switch positions as
necessary.
Compressor runs and switching off
(cool/warm to touch) - Thermostat
set too high.
Decrease cold thermostat set point.
Thermostat not working. Check/replace thermostat.
Compressor runs but not switching
off (hot to touch).
Please contact technical support.
Refrigeration problem. Please contact technical support.
Compressor not running at all - No
electricity power supply.
Check the Power cord is connected
and live, and the machine is
switched on.
Compressor only hums slightly/
briey.
Check and replace relays.
Relays loose. Check and ret relays.
Compressor not working. Please contact technical support.
Fan not working Check and replace, as required.
Hot Water not Hot Hot water mode switched off. Switch on hot water mode (status
LED should show).
Heating operation tripped off. Reset overheat button on hot tank.
Break in supply wiring to control
circuit.
Locate break and repair.
Hot water demand too high. Advise user/s.
Heating element not working. Check and replace Hot tank as
required.
Hot tank heavily scaled (signs of
scale in top of tank, loud boiling
noises etc).
Carry out thorough descale or
replace hot tank.
Break in supply wiring to main
element.
Locate break and repair.

B4.2 Install & Operation ManualBorg & Overström AU19
Fault Diagnosis: Water Leaks
Problem/Report Possible Cause Suggested Action
Water lying on top edge of
lower door panel and/or bottom
of Cabinet.
Overowing Drip Tray waste
container.
Empty Waste Container and check
drainpipe is not blocked.
Water lying in bottom of machine. Level Sensors not working. Check operation/repair/replace
as required.
Leak in supply inlet pipe work and/
or lter.
Locate and repair accordingly.
Leak from machine water pipe
work ttings.
Locate and repair accordingly.
Check pressure and t pressure
reducing valve if needed.
Fault Diagnosis: Miscellaneous
Problem/Report Possible Cause Suggested Action
Repeating beeping noise Level Sensor tted and tank full. Empty Level Sensor tank.
No LED Control Lights No electricity to Machine. Check power supply and reconnect
as necessary (Also check out other
symptoms as described separately).
Check Fuse in IEC Socket. Replace if necessary.
Control PCB not working (Machine
working normally otherwise).
Check/replace PCB.
Machine Shakes on Start-up Compressor Starting. No action needed. This is quite
normal.
Level Surface.
Uneven Surface. Level up machine using adjustable
feet.
Missing Fixings. Replace missing xings.
Tripping out Electricity Supply Machine in high humidity
environment.
Discuss possible repositioning with
customer.
Electrical circuitry faults. Test, identify and address
accordingly. See Electrical
Diagrams.
Please contact technical support

B4.2 Install & Operation ManualBorg & Overström AU20
Problem/Report Possible Cause Suggested Action
Slow but Continuous Water
Dispense from Ambient or Cold Tap
Low incoming water pressure Consider replumbing to alternative
supply if possible
Fit Booster pump set.
Intermittent Water Dispense from
Ambient or Cold Water Valve
Trapped air in pipework (especially
where water pressure is low after
lter change).
Hold button on to purge air out
(This could take sveral minutes
where pressure is low).
Pre-ush lters
Button not being pressed enough Press button rmly. Could be
caused by surrounding cold
environment making the button
stiffer.
Faulty PCB Replace PCB
Intermittent Water Dispense from
Ambient or Cold Water Valve and
hammering noise.
Fluctuating mains water pressure
situation.
Please contact technical support.
Continuous Water Dispense from
Ambient/Cold or Hot water valve.
Button jammed on/faulty. Replace PCB or/button panel as
needed.
Debris blocking hole in diaphragm
window.
Dismantle valve and clean out.
Fault Diagnosis: Miscellaneous