Borg & overström 728, 798 water cooler Installation & operation guide

INSTALLATION &
OPERATION GUIDE
728 & 798 MODELS
Technical
Manual
728 & 798 Models
Contents
Range Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
Installation & Operation Guides (inc Accessories). . . . . . . . . . . . . Page 9
Sanitisation and Descaling Guides . . . . . . . . . . . . . . . . . . . . . . . . Page 18
Trouble Shooting Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 24
Exploded Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 35
Machines & Accessories Listing . . . . . . . . . . . . . . . . . . . . . . . . . . Page 40
Categorised Parts Ordering Guide and Returns Note . . . . . . . . . Page 42
Step-By-Step Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 45
Technical Manual
Section1
728 & 798 Models
Range Overview
A comprehensive range of watercoolers, available in two different operational types:
• Reservoir Model
(Cold Water Storage Tank)
• “Direct Chill” Model
(No Stored Drinking Water)
Both types are available as:
• Floorstanding
• Countertop
All Reservoir models are available as either
• Cold and Ambient
• Hot and Cold
All Direct Chill models are available as either
• Cold and Ambient
• Hot and Cold
The floor standing model is also available as cold and sparkling.
4
728 & 798 Models
All types
All b & o “Reservoir” & “Direct Chill” models are self contained machines with robust steel sided cabinets and
attractively moulded front and top panels.
An IEC Power Lead is supplied for connection to the IEC socket found on the rear of all models.
Floorstanding Models
All are supplied with an opening lower door and are prefitted with a removable filter mounting bracket. A water
inlet fitting is provided to the bottom right hand corner.
It is possible to remove the cup dispenser to incorporate an easy access points for most filter types.
Countertop Models
It is possible to remove the cup dispenser to incorporate an easy access points for most filter types.
Reservoir Model
Water is fed into the reservoir via the Float Valve mounted in the Tank Lid. The Float Valve controls the water level in
the tank. Ensure a Pressure Reducing Valve is fitted to all supplies greater than 3.5 bar pressure.
The Baffle Plate inside the Cold Tank maintains separation between the lower chilled water and upper ambient
water. (The cooling system only chills water in the lower part of the Cold Tank).
Dispense is a low pressure via low pressure solenoid valve.
The Cold Temperature is thermostatically controlled via the adjustment screw on the back of the machine. This is
factory set and is not necessary to adjust in most cases. (See Controls)
On Hot & Cold versions, the Hot Tank is fed with ambient temperature water from the upper area of the Cold Tank.
The Hot Temperature is thermostatically controlled with sensors on the outside of the Hot Tank. These are preset
and are not adjustable. The system is designed so that the Hot Tank is impossible to run dry under normal usage.
Running dry can only occur if the inlet water is drained using the Drainage Point provided. In the event of running
dry the Overheat sensor would switch off the heater until manually reset.
5
728 & 798 Models
Controls
Cold & Sparkling Models
Electrical On/Off switch - At upper rear of machine. Switches on Cooling Operation.
Cold Thermostat - At rear of machine. On Classic models and inside the machine, next to the Chill Tank, on DC
Models.
Factory set to:
+C
-C
NB: Turn clockwise to decrease water temperature
Sparkling Button
Push to dispense sparkling water
Cold Button
Push to dispense cold water
Green LED (Top)
Colours to show Cooling Operation is switched on
Yellow LED (Bottom)
Colours to show when compressor is operating
Cold & Ambient Models
Electrical On/Off switch - At upper rear of machine. Switches on Cooling Operation.
Cold Thermostat - At rear of machine. On Classic models and inside the machine, next to the Chill Tank, on DC
Models.
Factory set to:
NB: Turn clockwise to decrease water temperature
Ambient Button
Push to dispense ambient water
Cold Button
Push to dispense cold water
Green LED (Top)
Colours to show Cooling Operation is switched on
Yellow LED (Bottom)
Colours to show when compressor is operating
6
728 & 798 Models
Hot & Cold Machines:
Hot Button
Push simultaneously with the key button to dispense hot water
Cold Button
Push to dispense cold water
Electrical On/Off Switches
At upper rear of machine
Cold - Switches on Cooling Operation
Hot - Switches on Heating Operation
10A Fuse
At upper rear of machine
Green LED (Top)
Colours to show Cooling Operation is switched on
Yellow LED (Middle)
Shows when heating mode is switched on
Red LED (Bottom)
Colours to show when main heater is operating (i.e. Off when water is at
temperature)
Hot Tank Overheat Reset Button
On sensor on side of Hot Tank (Press to operate if required. Ensure
electrical power is disconnected before doing so).
7
Technical Manual
Section 2
728 & 798 Models
CW798
Installation and Operational Guide
IMPORTANT - the guide must be read before attempting to connect the machine.
Introduction
Congratulations on your wise choice of water cooler. Your Borg & Overström water cooler will provide you with a
continuous supply of water 24 hours a day. To ensure that his product will always perform as it truly should, the
user should initially read this manual thoroughly and follow all the instructions before operation of the unit
commences.
Installation
The water connection to the Borg & Overström water cooler is via a 1/4” supply. The connection can either be made
utilising the bulk head connector found at the rear of the machine or by connecting an in-line straight connector
direct to the pipe inside the rear of the machine. It is advisable that in any case an in-line isolation tap should be
installed on the supply just behind the machine in case of emergency.
Operation Method
1. Having connected the water supply to the rear of the machine, the water supply should be turned on and you will
hear the reservoir within the machine start to fill. Once this has stopped filling, the entire tank should then be
drained and allowed to refill before operation of the machine commences. If in any doubt at this stage please add
some sanitisation fluid to your initial tank of water so as to flush the machine before use. Once the machine has
refilled with water the machine can be connected to the mains supply and switched on.The switch at the rear of the
machine then needs to be turned on before operation can commence.
NB. If your water cooler has a hot water facility please allow time for the hot tank to fill up before turning on. To
draw water into the hot tank, the hot tap must be held open until water starts to dispense.
2. Both LEDs on the display panel should now be showing. After initial chilling operation has been completed the
chilling lens will go off, which is the bottom of the two lenses showing.
Machine Positioning
1. It is important that at least 10cm is left between the back of the machine and the surface against which it is
placed. This is to ensure that the machine does not in any way overheat.
2. The machine must be kept away from any direct sunlight.
3. It is important that the machine is connected to an RCD connected supply making doubly sure that the voltage
supply is compatible with the machine.
9
728 & 798 Models
Sanitisation & Cleaning
1. Please make sure that the machine has been disconnected from the electrical supply before any cleaning
commences.
2. The lid of the machine should be removed exposing the inside of the water tank. Now press both the cold tap and
the ambient tap to drain all the water from the reservoir until no water can be seen. Remove the baffle plate found
in the centre of the tank passing it around the float valve to remove it completely. At this stage it is possible to see
whether any water has been left in the base of the tank. A hundred miliilitres of sanitising fluid can now be tipped
into the reservoir.
3. The water can be turned on again briefly to half fill the reservoir with sanitising fluid. The upper half of the
reservoir should be cleaned utilising sanitisation wipes supplied by Azure. Whilst the sanitisation fluid is having its
effect, please clean the external casing with Azure sanitisation wipes. Once the sanitisation fluid has been left for a
satisfactory period of time, please flush the water cooler through at least once by turning the water back on. When
this has been completed, the machine can be reassembled and your sanitisation is complete. Please now switch
the power back on. If you have any question regarding sanitisation please do not hesitate to ring Azure Head Office
on 0845 4 50 30 90.
10
728 & 798 Models
DC798
Installation and Operational Guide
IMPORTANT - the guide must be read before attempting to connect the machine.
Introduction
Congratulations on your wise choice of water cooler. Your Borg & Overström water cooler will provide you with a
continuous supply of water 24 hours a day. To ensure that his product will always perform as it truly should, the
user should initially read this manual thoroughly and follow all the instructions before operation of the unit
commences.
Installation
The water connection to the Borg & Overström water cooler is via a 1/4” supply. The connection can either be made
utilising the bulk head connector found at the rear of the machine or by connecting an in-line straight connector
direct to the pipe inside the rear of the machine. It is advisable that in any case an in-line isolation tap should be
installed on the supply just behind the machine in case of emergency.
Operation Method
1. Having connected the water supply to the rear of the machine, the water supply should be turned on and you will
hear the header tank and ice bank starting to fill. Once this has stopped filling, the machine can be connected to the
mains supply and switched on. The switch at the rear of the machine then needs to be turned on before operation
can commence.
NB. If your water cooler has a hot water facility please allow time for the hot tank to fill up before turning on. To
draw water into the hot tank, the hot tap must be held open until water starts to dispense.
2. Both LEDs on the display panel should now be showing. After initial chilling operation has been completed the
chilling lens will go off, which is the bottom of the two lenses showing.
Machine Positioning
1. It is important that at least 10cm is left between the back of the machine and the surface against which it is
placed. This is to ensure that the machine does not in any way overheat.
2. The machine must be kept away from any direct sunlight.
3. It is important that the machine is connected to an RCD connected supply making doubly sure that the voltage
supply is compatible with the machine.
11
728 & 798 Models
Sanitisation & Cleaning
1. To commence sanitisation, simply isolate the water supoply and remove the filter cartridge.
2. Having removed the filter cartridge you now connect the dosing cartridge supplied by Azure with 125ml of
sanitisation fluid inside.
3. Now simply hold on the cold and ambient water button until the sanitisation until the sanitisation fluid hsa been
flushed through the system.
4. The last stage is to fully clean the external casing with Azure sanitisation wipes. When this has been completed
your sanitisation is complete.
If you have any question regarding sanitisation please do not hesitate to ring Azure Head Office on
0845 4 50 30 90.
12
728 & 798 Models
CW728
Installation and Operational Guide
IMPORTANT - the guide must be read before attempting to connect the machine.
Introduction
Congratulations on your wise choice of water cooler. Your Borg & Overström water cooler will provide you with a
continuous supply of water 24 hours a day. To ensure that his product will always perform as it truly should, the
user should initially read this manual thoroughly and follow all the instructions before operation of the unit
commences.
Installation
The water connection to the Borg & Overström water cooler is via a 1/4” supply. The connection can either be made
utilising the bulk head connector found at the rear of the machine or by connecting an in-line straight connector
direct to the pipe inside the rear of the machine. It is advisable that in any case an in-line isolation tap should be
installed on the supply just behind the machine in case of emergency.
Operation Method
1. Having connected the water supply to the rear of the machine, the water supply should be turned on and you will
hear the reservoir within the machine start to fill. Once this has stopped filling, the entire tank should then be
drained and allowed to refill before operation of the machine commences. If in any doubt at this stage please add
some sanitisation fluid to your initial tank of water so as to flush the machine before use. Once the machine has
refilled with water the machine can be connected to the mains supply and switched on.The switch at the rear of the
machine then needs to be turned on before operation can commence.
NB. If your water cooler has a hot water facility please allow time for the hot tank to fill up before turning on. To
draw water into the hot tank, the hot tap must be held open until water starts to dispense.
2. Both LEDs on the display panel should now be showing. After initial chilling operation has been completed the
chilling lens will go off, which is the bottom of the two lenses showing.
Machine Positioning
1. It is important that at least 10cm is left between the back of the machine and the surface against which it is
placed. This is to ensure that the machine does not in any way overheat.
2. The machine must be kept away from any direct sunlight.
3. It is important that the machine is connected to an RCD connected supply making doubly sure that the voltage
supply is compatible with the machine.
13
728 & 798 Models
Sanitisation & Cleaning
1. Please make sure that the machine has been disconnected from the electrical supply before any cleaning
commences.
2. The lid of the machine should be removed exposing the inside of the water tank. Now press both the cold tap and
the ambient tap to drain all the water from the reservoir until no water can be seen. Remove the baffle plate found
in the centre of the tank passing it around the float valve to remove it completely. At this stage it is possible to see
whether any water has been left in the base of the tank. A hundred miliilitres of sanitising fluid can now be tipped
into the reservoir.
3. The water can be turned on again briefly to half fill the reservoir with sanitising fluid. The upper half of the
reservoir should be cleaned utilising sanitisation wipes supplied by Azure. Whilst the sanitisation fluid is having its
effect, please clean the external casing with Azure sanitisation wipes. Once the sanitisation fluid has been left for a
satisfactory period of time, please flush the water cooler through at least once by turning the water back on. When
this has been completed, the machine can be reassembled and your sanitisation is complete. Please now switch
the power back on. If you have any question regarding sanitisation please do not hesitate to ring Azure Head Office
on 0845 4 50 30 90.
14
728 & 798 Models
LEAK DETECTOR
Installation and Operational Guide
IMPORTANT - the guide must be read before attempting to connect the machine.
Introduction
Congratulations, you have chosen wisely to add a
Leak Detector to your Borg & Overström water
cooler. This product does not in anyway provide a
guarantee or insurance against any flooding but
provides the means of added prevention. Please
ensure that you read this manual thoroughly before
proceeding, and take note of the installation and
operation procedures to achieve the best results.
Inlet and Outlet
Probes
15
Re-set switch
Connection plugs
728 & 798 Models
Installation & Operation
This product can only be used in conjunction with a Borg & Overström water
cooler.
Please follow the step-by-step procedures for installation:
1. Please fix the Leak Detector as high as possible within the machine.
Ensure that the red lever has sufficient space to be activated. It is
imperative that the electrical connections are facing upwards and the
water pipe is installed into the base of the Leak Controller and that the
Leak Controller is mounted vertically.
2. The detection probes can now be fixed into their locating holes in the
channel within the base plate.
3. The inlet and outlet connection ports for the water are connected via 1/4”
push fit fittings. The pipe already located within the machine must be
connected to the outport on the machine and the supply feed coming into
the machine must therefore be placed into the inport. Find a connection
plug within the back of the machine where the power supply comes in.
Please part the two sections of this connection plug and plug your Leak
Controller into these two connections. Note: This will only work one way
round (you cannot get it wrong).
4. Your Leak Detector is now ready for operation. Please ensure that the
red lever is in the closed position before plugging in your Borg &
Overström water cooler to the mains supply.
RESETTING DETECTOR
In the unlikely event of a leak from a Borg & Overström machine the water detector will automatically shut off both
the power and incoming water supply. Please follow the following procedures to reset the detector to regain normal
operation.
LEAKS & REPAIRS
1. Unplug the machine from the electrical supply. Intially the machine must be left unplugged whilst the repair is
being carried out.
2. Identify the cause of the leak and replace any necessary parts. Once this has been carried out thoroughly dry out
the channel in the base of the cooler. The probes should then be removed from their locating positions,
thoroughly dried and placed back into position.
3. Now push the red lever back into its normal position so as to return to operation. The power can now be
switched back on to the cooler and the machine is ready for operation.
4. In the unlikely event that the red lever should trigger once more, then procedures 1 to 3 should be carried out again.
5. Please note that the electical power to the machine, not just within the machine, must be disconnected for at
least 5 seconds to enable the device to reset. A shorter on-off-on cycle time is unlikely to be long enough, and
the machine on/off switch will not cut the power to the device.
In the event of any queries please call Technical Support on 0845 4 50 30 90.
16
Technical Manual
Section 3
728 & 798 Models
Sanitisation Guide
Direct Chill Water Coolers
Turn off incoming mains water, briefly press dispense button(s) to release internal water pressure from the
machine and remove filter. If possible temporarily shut off inlet to any hot tank as sanitisation of a hot tank in
continuous use is unnecessary.
Add 100 ml of a proprietary sanitisation fluid to a clean and empty service filter cartridge/dosing device and connect
into machine. Always ensure to use a reputable branded sanitisation fluid for effective action.
Please note: We recommend using a 3% Hydrogen Peroxide concentration base sanitising fluid of reputable
manufacture to the appropriate dilution ratios as supplied with the product or typically 1:30 max. (Stronger
concentrations will require larger dilution rates).
Please remember that most sanitisation fluids (including ozone) contain 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.
Turn on incoming water, allow service cartridge/doser to fill and then draw off at least 1 litre of water for the
machine to ingest the solution. Leave solution for 10 minutes inside machine for sanitisation to take effect. During
this time thoroughly clean the machine externally. For this we recommend the use of proprietary disposable
sanitisation wipes. Pay particular attention to the dispense faucet and the push button controls. Remember to
include the drip tray. If a Waste Overflow System is fitted, this may benefit from flushing through with a small
amount of dilute sanitisation fluid. Optionally you may replace the dispense faucet and/or descale it.
After a satisfactory period of time, flush the machine with at least 10 litres of clean water to clear any trace of the
sanitisation fluid. Optionally use test strips to check.
Turn off water and remove the service filter/doser and fit a new filter of reputable quality and suited to the site
conditions. We recommend pre-flushing the new filter to reduce any risk of any loose media in the filter entering
the solenoid valves and possibly causing a malfunction. Retain the service cartridge/doser for reuse.
Turn on incoming water supply and carefully ensure the thorough sanitising of the outside of the machine is
completed. Reconnect power and reset any service/filter life monitors accordingly. Ensure any hot tank inlet is
reconnected and the tank is purged of air before switching heater on again.
ALWAYS ENSURE ANY RESIDUAL AIR HAS BEEN PURGED FROM BOTH
COLD AND HOT SYSTEMS AND ALL IS OPERATIONAL BEFORE LEAVING.
18
728 & 798 Models
Sanitisation Guide
Reservoir Water Coolers
Please make sure that the machine has both been switched off and disconnected from the electrical supply and
that the water is turned off, use the dispense valves (and drain point if fitted) to drain off all the water, before any
cleaning commences.
The lid of both the machine and the tank should be removed exposing the inside of the water tank. Remove the
baffle plate found in the centre of the tank. Any lime scale or mineral deposits should first be removed by manual
scrubbing with a non-metallic sponge-scouring pad. For stubborn deposits, most domestic brand stainless steel
cleaners can also be used.
Please insert a small stopper into the feed for the hot tank to prevent any sanitisation fluid entering the hot tank.
If using a service dosing cartridge, please now go straight to no 4. At this stage it is possible to see whether any
water has been left in the base of the tank, 100ml of sanitising fluid can now be tipped into the reservoir. (We
recommend a hydrogen peroxide base sanitising fluid of reputable manufacture using the dilution ratios as
supplied with the product.)
Remove the existing filter and install a filter head to suit the service cartridge if necessary. Empty 100ml of
sanitisation fluid into the service cartridge and connect the cartridge to the filter head.
The water can be turned on again briefly to half fill the reservoir, forming a sanitising solution. The upper half of the
reservoir should be cleaned with sanitisation wipes. Leave for 10 minutes to effect sanitisation, whilst the
sanitisation solution is having its effect, please fully clean the external casing with sanitisation wipes, ensuring
particular attention is paid to the faucets. Once the sanitisation fluid has been left for a satisfactory period of time
please flush the water cooler through at least once with clean water.
When this has been completed, the machine can be reassembled and your sanitisation is complete. Always
remember to replace the filter(s) with the appropriate type(s). (Retain service/dosing cartridges for reuse.) Please
now switch the power back on.
Ozonation is another alternative, but not a recommended method, as we believe the opportunity should always be
taken to inspect the machine internally, remove any scale or mineral build-ups and take interventive action where
appropriate.
ALWAYS PURGE AIR FROM THE COLD AND HOT SYSTEM BEFORE
SWITCHING POWER ON AGAIN.
19
728 & 798 Models
Descaling Guide
Reservoir Model
Scale deposits will occur whenever water is heated. Higher deposits will occur with harder water and higher
temperatures. Although scale deposits can be reduced through using softened water this is not necessarily
desirable due to the adverse effect on taste. Therefore, it is important that descaling is carried out regularly to
maintain the high efficiency of operation of your appliance.
The frequency of descaling depends on the hardness of the water and the intensity of usage in each case. At least
every 12 months is highly recommended. Although it is primarily the Hot Tank (Water Heater) that requires
descaling, it is also necessary to sometimes carry out some in the cold tank.
Please note: Descaling is to remove the inevitable build up of limescale and should not be
confused with sanitisation, which is a different procedure for maintaining the necessary
hygiene standards for drinking water.
1. Switch off the power and water supply. Drain off water, including Hot Tank. It may be beneficial at this stage to
flush through the hot tank with clean water to remove as much loose scale as possible if the tank appears
particularly scaled up.
2. Carefully fill a suitable pouring jug with approx 2 ½ litres of hot water and add the correct amount of descaler
relevant to the enclosed instructions for safe and effective use.
3. Remove the Top Cover from the appliance (and the lid covering the cold tank on later models).
Carefully remove the Float Valve and Baffle Plate from the Cold Tank.
4. Slowly pour the descaling solution into the Cold Tank. This will drain directly into the Hot Tank. Continue to add
the solution until it also just begins to fill the Cold Tank too. Leave the solution to react with the limescale as
directed.
5. Should limescale be present in Cold Tank, carefully treat the areas concerned using the same solution. Also,
treat any removed parts such as the Float Valve, after checking the directions for use for compatibility. Similarly,
if the outlet dispense valves need treatment, dispense a little solution to draw it into the dispense valves.
Examine the small black rubber water stop seal on the Float Valve for any damage or wear and replace if
necessary. DO NOT ROTATE THE SEAL IF IT IS NOT BEING REPLACED AS THIS COULD AFFECT ITS WATER
SEAL SEATING AND ALLOW SEEPAGE.
6. After an appropriate time, carefully scrub any surface scale to remove it taking care not to damage the part. If
scrubbing of the inside of the dispense valves is required, remove the Front Panel of the appliance and carefully
dismantle the dispense valves by unscrewing the ring under the lever and then drawing the lever mechanism
upwards out of the body. N.B. Before removing the dispense valves, drain off any remaining solution in the
cold tank.
7. Reassemble any removed parts as necessary and flush appliance through thoroughly with mains water as
directed (Carry out sanitisation procedure at this point if desired).
8. Finally, allow appliance to refill, check for any leaks and switch on power supply.
20
Technical Manual
Section 4
22
From Hot dispense valve
From Cold dispense valve
Ambient Water too warm
No Water Dispenses
Problem/ Report
M O D E L S
Turn off elec and water and reset (Check for leaks)
Check dispense valve action. Dismantle dispense
valve and replace complete or just washer, as
needed.
“Leak detector” (if fitted) tripped off (and Tank
Empty)
Faulty dispense valve (and tank full)
Tank very heavily scaled up
Airlock in dispense pipe work
Firstly all as for Ambient dispense valve
Cold area of tank frozen – Faulty Thermostat
Replace Tank
Unblock/replace Hot Water Pipe and Hot Vent Pipe
(check water level showing in Hot Vent Pipe)
Carry out checks and actions as for ambient
dispense valve.
Thaw out and increase Cold Water temperature set
point. Thaw out and check and replace Cold
Thermostat
Carry out checks and actions as for ambient
dispense valve.
Firstly all as for Ambient dispense valve
Cold area of tank frozen - Thermostat set too low
Check and unblock/replace as needed
Blocked Tank outlets/pipes
Replace/adjust position/repair as needed
Reset “Waterblock” (and check for any leaks)
“Waterblock” tripped off (and Tank empty)
Reservoir Float Valve jammed up (and Tank empty)
Check all dispense valve filters on incoming supply
are fitted and are turned on.
Suggested Action
Water Supply turned off (and Tank empty)
Possible Cause
No Water Dispenses
Trouble Shooting Fault Diagnosis Guide (1)
R E S E R V O I R
728 & 798 Models
Possible Cause
Cold water not Cold
Ambient Water too warm
Decrease Cold Thermostat set point
Replace Thermostat
Replace Thermostat
Contact Azure Technical Support
Contact Azure Technical Support
Check power cord connected and live, and machine
is switched on.
Replace thermostat
Check and replace relays
Check and refit relays
Contact Azure Technical Support
Refit Baffle Plate
Faulty Thermostat
Compressor runs but not Switching off (Hot to
touch)
Refrigeration problem
Compressor not running at all
No elec power supply
Thermostat faulty
Compressor only hums slightly/ briefly
Relays loose
Compressor Faulty
Cold Tank Baffle Plate Not Connected
Advise customer
High usage and fed from water supply pipe in
warm ducting
Compressor runs and switching off (cool/warm to
touch) - Thermostat set too high
Check Tank Insulation fitted and / or advise
customer
Suggested Action
Low usage and heat from compressor influencing
stored water
Water Dispenses But Not Correct Temperature
Problem/ Report
Water Dispenses but Not Correct Temperature
Trouble Shooting Fault Diagnosis Guide (2)
728 & 798 Models
23
24
Warm Temperature - not hot
Ambient Temp only
Hot Water Not Hot
Problem/ Report
Reset Overheat Button on Hot Tank
Locate break and repair
Check supply voltage and current to Heater Band
and replace accordingly
Check supply voltage and current to Hot Thermostat
and replace accordingly
Carry out thorough descale/ complete replacement
of Hot Tank
Heating operation tripped off (No Yellow LED)
Break in supply wiring to control circuit
Main reheat element not working (Red LED on all
the time)
Hot tank heavily scaled up (signs of scale in top of
Cold Tank, loud boiling noises etc)
Break in supply wiring to main element
Locate and repair break
Switch on
Suggested Action
Heating operation switched off (No Yellow LED)
Possible Cause
Water Not Hot
Trouble Shooting Fault Diagnosis Guide (3)
728 & 798 Models
Locate and repair accordingly
Locate and repair accordingly
Leak in supply inlet pipe-work and / or filter
Leak from machine hose or tubing
Water lying in bottom of
machine or on mid shelf
Check pressure and fit pressure reducing valve if
needed
Check and repair float valve
Replace washer
Replace Hot Tank
Check and replace Probe (Conversion Kit
recommended)
Check and replace Main Control Board (Conversion
Kit recommended)
Check insulation and repair/replace accordingly
Water pressure too high
Jammed Float Valve
Split Float Valve Washer
Overflowing Cold Tank (Hot Tank exclusively
sealed)
Hot Tank thermistor probe faulty (Pre 0708 models
only)
Control Board Failure (Pre 0708 models only)
Condensation from tank or Cold Water Pipe
Overflowing Cold Tank
Empty Drip Tray
Suggested Action
Overflowing Drip Tray
Possible Cause
Water lying on top edge of
lower door panel and / or
bottom of machine
Water Leaks
Problem/ Report
Water Leaks
Trouble Shooting Fault Diagnosis Guide (4)
728 & 798 Models
25
26
Tripping out Electricity
supply
(Contact Azure Technical Support for further advice)
Test, identify and address accordingly.
Electrical circuitry faults
Replace missing fittings
Missing Fittings
Discuss possible repositioning with customer
Level up machine (Adjustable feet from early 2009)
Uneven Surface
Machine in high humidity environment
No action needed. This is quite normal.
Level Surface
Compressor Starting
Replace PCB
Faulty PCB (Machine working normally otherwise)
Machine shakes on Start-Up
Check power supply and reconnect as necessary
(Also check out other symptoms as described
separately)
No electricity to Machin
No LED Lights
Empty Level Sensor Tank
Suggested Action
Level Sensor fitted and Tank full
Possible Cause
Bleeping Noise
Miscellaneous
Problem/ Report
Trouble Shooting Fault Diagnosis Guide (5)
Miscellaneous
728 & 798 Models
From Ambient Valve
No Water Dispenses
Problem/ Report
C H I L L
M O D E L S
O N L Y
Check power cord connected and live and machine
is switched on.
Reset “Waterblock” (and check for any leaks)
Check valve action. Carefully dismantle valve and
clean out/part replace/complete replace as needed.
No Electricity/Power Supply
“Waterblock” tripped off (and Tank empty)
Faulty Solenoid Valve
If present, replace solenoid coil/whole valve
coil/whole valve assembly complete.
Valve not clicking-Check whether voltage is present
when operated (Caution-High Voltage). If not
present check wiring for continuity and /or replace
PCB.
Valve clicking but no water-Check if hole in centre of
washer is clear.
Check all Taps/valves/ filters on incoming supply are
fitted and are turned on.
Suggested Action
Water Supply turned off
Possible Cause
No Water Dispenses
Trouble Shooting Fault Diagnosis Guide (6)
D I R E C T
728 & 798 Models
27
28
From Ambient or Cold Valve
From Cold dispense valve
No Water Dispenses
Problem/ Report
C H I L L
M O D E L S
O N L Y
Faulty PCB
Button Not being pressed enough
Chiller tank Frozen-faulty air pump
Chiller tank frozen - Faulty Thermostat
Firstly all as for Ambient dispense valve
Possible Cause
No Water Dispenses
Replace PCB
Press button firmly. N.B. This could be caused by a
surrounding cold environment making the action
stiffer
Thaw out and check and replace Air pump and or
check electricity supply to pump present
Thaw out and check and replace Cold Water
temperature set point.
Carry out checks and actions as for ambient
dispense valve.
Suggested Action
Trouble Shooting Fault Diagnosis Guide (6) continued
D I R E C T
728 & 798 Models
From Hot dispense valve
No Water Dispenses
Problem/ Report
Tank very heavily scaled up
Airlock in dispense pipe work
Firstly all as for Ambient dispense valve
Possible Cause
Replace Tank
Unblock/replace Hot Water Pipe and Hot Vent Pipe
(check water level showing in Hot Vent Pipe)
Carry out checks and actions as for ambient
dispense valve.
Suggested Action
728 & 798 Models
29
30
M O D E L S
O N L Y
Possible Cause
• Faulty Thermostat
Check power cord connected and live, and machine
is switched on.
Check and replace relays
Check and refit relays
Contact Azure Technical Support
No elec power supply
• Compressor only hums slightly/ briefly
• Relays loose
• Compressor Faulty
Compressor not running at all
• Refrigeration problem
Contact Azure Technical Support
Replace Thermostat
Compressor runs and switching off (cool/warm to
touch) - Thermostat set too high
Cold water not Cold
Compressor runs but not Switching off (Hot to
touch)
Decrease Cold Thermostat set point
Low usage and / or fed from water supply pipe in
warm ducting
Ambient Water too warm
Advise customer
Suggested Action
Water Dispenses but Not Correct Temperature
Water Dispenses but Not Correct Temperature
Problem/ Report
C H I L L
Trouble Shooting Fault Diagnosis Guide (7)
D I R E C T
728 & 798 Models
M O D E L S
O N L Y
• Split Float Valve Washer
• Jammed Float Valve
• Water pressure too high
Replace washer
Check and repair float valve
Check pressure and fit pressure reducing valve if
needed
Locate and repair accordingly
Leak from machine water pipework fittings
Overflowing Header Tank
Locate and repair accordingly
Leak in supply inlet pipe-work and / or filter
Water lying in bottom of
machine or on mid shelf
Empty Drip Tray
Suggested Action
Overflowing Drip Tray
Possible Cause
Water Leaks
Water lying on top edge of
lower door panel and / or
bottom of machine.
Water Leaks
Problem/ Report
C H I L L
Trouble Shooting Fault Diagnosis Guide (8)
D I R E C T
728 & 798 Models
31
32
M O D E L S
O N L Y
Tripping out Electricity
supply
(Contact Azure Technical Support for further advice)
Test, identify and address accordingly.
Electrical circuitry faults
Replace missing fittings
Missing Fittings
Discuss possible repositioning with customer
Level up machine (Adjustable feet from early 2009)
Uneven Surface
Machine in high humidity environment
No action needed. This is quite normal.
Level Surface
Compressor Starting
Replace PCB
Faulty PCB (Machine working normally otherwise)
Machine shakes on Start-Up
Check power supply and reconnect as necessary
(Also check out other symptoms as described
separately)
No electricity to Machin
No LED Lights
Empty Level Sensor Tank
Suggested Action
Level Sensor fitted and Tank full
Possible Cause
Miscellaneous
Bleeping Noise
Miscellaneous
Problem/ Report
C H I L L
Trouble Shooting Fault Diagnosis Guide (9)
D I R E C T
728 & 798 Models
C H I L L
M O D E L S
O N L Y
Possible Cause
From ambient / Cold or Hot
water Valve
Continuous Water Dispense
From Ambient or Cold Water
Valve and hammering noise
From Ambient or Cold Water
Valve
Intermittent Water Dispense
From Ambient or Cold Water
Valve
Press button firmly N.B. This could be caused by a
surrounding cold environment making the action
stiffer
Faulty PCB
Replace PCB and or/ button Panel as needed
Dismantle Valve and clean out
Debris blocking hole in diaphragm window
Contact Azure Technical Support regarding special
replacement washers available
Button jammed on/faulty
Fluctuating mains water pressure situation
Pre flush filters
Button Not being pressed enough
Replace PCB
Hold button on to purge air out. (This could take
several minutes where pressure is low)
Fit Booster Pump Set
Consider replumbing to alternative supply if
possible
Suggested Action
Trapped air in pipe work (especially where water
pressure is low or after filter change)
Low incoming Water pressure
Slow but Continuous Water Dispense
Problem/ Report
Intermittent Water Dispense/Continuous Water Dispense
Sparkling Trouble Shooting Fault Diagnosis Guide (10)
D I R E C T
728 & 798 Models
33
Technical Manual
Section5
728 & 798 Models
Borg & Overstrom Elite 728H
Hot & Cold/Countertop
Exploded Component View
Production no:728H-02
Sept 2009
35
728 & 798 Models
Borg & Overstrom Elite 728
Cold & Ambient/Countertop
Exploded Component View
Production no. 728-01
Jan 2009
36
728 & 798 Models
Borg & Overstrom Elite 798
Cold & Ambient/Floorstanding
Exploded Component View
Production no. 798-01
Jan 2009
37
728 & 798 Models
Borg & Overstrom Elite 798H
Hot & Cold/Floorstanding
Exploded Component View
Production no 798H-01
Jan 2009
38
Technical Manual
Section6
728 & 798 Models
MACHINES
CW798
Floorstanding reservoir cold and ambient
CW798H
Floorstanding reservoir cold and hot
CW728
Countertop reservoir cold and ambient
CW728H
Countertop reservoir cold and hot
DC798
Floorstanding direct chill cold and ambient
DC798H
Floorstanding direct chill cold and hot
DC728
Countertop direct chill cold and ambient
DC728H
Countertop direct chill cold and hot
DC798CS
Floorstanding direct chill cold and sparkling
ACCESSORIES
CW051
Overflow System
CWLD1
Leak Detector
W2081
Standard Cup Dispenser
CW2081
B & O Cup Dispensor
CWLVS
Level sensor
CWWB
Wall Brackets
CWSB
Sports Bottles
40
Technical Manual
Section7
728 & 798 Models
RETURNS NOTE
Azure Service No:
IMPORTANT: TO ENABLE US TO PROCESS YOUR CLAIM AS QUICKLY AS POSSIBLE, PLEASE FULLY
COMPLETE ALL SECTIONS, FOLLOWING THE PROCEDURE DETAILED OVERLEAF.
CREDIT WILL NOT BE CONSIDERED UNLESS THIS NOTE IS FULLY COMPLETED AND ENCLOSED WITH THE
RETURNED ITEM(S) WITHIN FOURTEEN DAYS OF THE SUPPLY OF THE REPLACEMENT ITEM.
Customer
Contact
Address
Tel No:
Date
/
/
Description of Parts Returned
Item Code/Part No:
Replacement Items Invoice No:
FOR PARTS/ MACHINES
Faulty Parts Removed From:
Machine Type:
Serial No:
Machine Purchase Date:
Inv No:
Description of Faults/Defects:
*Please note that descriptions such as “faulty part” are not acceptable.*
Claim In / Out Guarantee (delete as appropriate)
TO: Service Department
Azure UK
5, John Goshawk Road
DEREHAM
Norfolk
NR19 1XU
Azure Service Number:
728 & 798 Models
Azure Returns Procedure
If you want to return any of your items please follow the instructions below
• An Azure Service Number must be obtained prior to returning any goods by calling Azure Service on : 0845 450
30 90.
• You will need to provide a full fault description or reason for return for any product being returned.
• The Azure Service Number MUST BE CLEARLY MARKED on the outer transit packaging of your return.
• Please use the tear off slip overleaf and enter the Azure service number (on the top and bottom of the form
where indicated) and attach securely to your packaging.
• Please enclose a copy of your invoices.
• Make sure the item(s) are adequately protected to prevent any damage. Azure cannot be held responsible for any
damage to goods returned without adequate protective packaging.
• Please retain courier collection receipt for your records.
• If you have any further questions or queries relating to the returns Procedure please call Azure service on the
above telephone number.
43
Technical Manual
Section8
728 & 798 Models
STEP-BY-STEP PROCEDURES
Contents
Hot Tank Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 46-47
Procedure For Checking the Compressor/ Cooling Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 48-49
Heater Band Replacement Procedure (Use Hot Tank Replacement Procedure) . . . . . . . . . . . . . . . . . Page 46-47
Solenoid Valve Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 50
45
728 & 798 Models
Hot Tank Replacement Procedure
Tools Required
10-Ltr Bucket
1Litre jug
*1Pt Long Blade Phillips Screwdriver (250mm blade min)
Flat Blade Screwdriver
Side Cutters
Estimated time 20 minutes
*Preferable, otherwise a standard short bladed version can be used.
1. Switch off the two switches on back of the machine and disconnect the power lead. Isolate the mains water
supply.
2. Fully drain all the water from the machine. The cold water can be drained via the Cold dispense valve and the
hot water via both the Hot dispense valve and the Hot Tank drain. CAUTION-THE WATER MAY BE VERY HOT.
If the tank is heavily scaled the drain may be partially or fully blocked requiring more caution. On the
Floorstanding machine, the drain is on the back of the machine and on the Countertop, it is underneath.
3. Remove the two screws at the back of the top Panel and lift off.
4. Remove the two screws at the top of the front panel and in the case of a Floorstanding machine, open the Door
Panel and slacken off the two screws at the bottom. (You may if you prefer, remove these completely). Remove
the front panel by lifting it upwards slightly first, then away keeping it clear of the dispense valves. With a
Floorstanding machine, the Door Panel will then need lifting off its lower hinge pin and setting aside.
N.B. Be careful to avoid damaging the high quality finish to the panels whilst these are removed from the
machine.
5. At this stage, determine which type of Hot Tank is fitted.
6. Carefully disconnect the four silicone rubber pipes and the Thermistor Probe if applicable.
a) Internal Element Tank (Discontinued-Can be retrofitted all with newer types.)
b) Thermister Probe Tank (NB. External sensor mountings may vary)
c) External Thermostat Tank (Can also be retrofitted to earlier Models-for upgraded Procedure , see separate
Technical Guide)
7. Remove the two screws holding the Hot Tank and carefully ease the Tank out of the machine as far as the
electrical connections allow.
8. Carefully disconnect the spade terminals from the external sensor(s) on the Hot Tank.
9. Disconnect the heater power block, carefully remove the tie wrap (with cutters) and remove the Tank.
10. Before fitting the new Hot Tank, ensure the Heater Element is securely fitted (as shown) and depending on the
replacement Hot Tank type, either with one or two of the external sensors. (On the Thermistor Probe Tank, the
single reset type Overheat cut-out is fitted to the bottom position).
46
728 & 798 Models
11. Reconnect the heater power block, fitting a new tie wrap as necessary. Reconnect the spade terminals onto the
external sensors as follows:
Top Sensor
Single large white wire and pair of large white/small white wire.
Bottom Sensor
Pair of large red/ small red wire and pair of large white wires.
12. Carefully reconnect the silicone rubber pipes, connecting as fully as possible. Connect new thermistor probe /
cover cap to side of Tank as applicable.
13. Secure new Tank in position with two bolts.
14. Check all pipes and wiring is connected before turning water on again.
15. Refit front panel, engaging with top hinge pin of Door Panel and Top Cover.
16. Wait until water can be dispensed from both taps before switching heating and cooling circuits on.
In the event of any queries, please call our Technical Helpline on 01362 656927
47
728 & 798 Models
Azure Technical Advice
Procedure For Checking the Compressor/ Cooling Operation
If the Compressor does not run:
1. Check the LED display
For Cold & Ambient models the green (top) LED should always be on and the Yellow (Bottom) when cooling is
called for. If the green is off then check the machines main power supply and the on/off switch.
For the Hot & Cold models the green (top) LED should always be on. If off, check the machines main power
supply and the COLD on/off switch.
2. Switching on the Compressor measure the current draw. No operation, but a high draw indicates a jammed
compressor (contact Azure Technical Support).
3. The wiring loom can be traced and the live supply check periodically moving towards the compressor (if there is
a break at the Cold Thermostat turn the screw clockwise and check whether this closes the circuit. If this
doesn’t even when at max, the thermostat should be replaced. Alternatively, for testing purposes only, the
thermostat could be bridged).
4. Remove the compressor relay cover and carefully remove the relays. If the power has been even recently
connected to the compressor, the solid stat relay will be energised and will need discharging.
5. Check the Compressor resistance readings.
R
S
C
Approx readings could be:
R-C 12ohms
S-C 34ohms
R-S 46 Ohms (sum of both)
N.B. There should always be some variation between compressors. What should be identified is large
discrepancies/unbalanced readings.
Also, especially in the case of large discrepancies/unbalanced readings, check for continuity between any of the
terminals and the compressor casing. A current will indicate a shorted winding (Contact Azure Technical
support).
6. Checking the relays:
Caution: Ensure the larger relay is discharged if recently energised. (This can be discharged by 2MR, 2W resister
in the circuit).
Clearly, the best and surest way to test the relays is to replace them one by one and check the compressor
operation. Otherwise, each relay component can be basically tested using a meter
The Solid State Relay should read approx
3-6 closed circuit
3 ≈ 36 Ω (Ohms)
The Klichson (overload) should read approx
≈ 1.7Ω (Ohms)
7. Ensure the terminals are clean and good contact is made.
48
728 & 798 Models
If the Compressor Does Run
(Presuming that the Cold water is not being cooled sufficiently)
1. Check the small pipe on the ‘high’ side of the compressor. This should be quite warm after several minutes of
normal operation.
2. Following it to the condenser, check the condenser temperature. Normally the beginning will be warmer,
cooling off towards the end.
• No or very low temperature could indicate a low refrigerant charge. A low current draw would indicate this.
(Contact Azure Technical Support).
• An overly high temperature could indicate a blockage; A high current draw would confirm this. (Contact
Azure Technical Support).
3. Continue to follow the pipe work from the end of the condenser to the dryer.
• A frozen / iced dryer will indicate a blockage (Contact Azure Technical Support) Again; a high current draw
would confirm this.
4. The dryer exits into the capillary tube. Check this for restrictions and NB: This has a very small bore.
5. The Capillary enters the evaporator. This can be checked visually for any obvious signs of deterioration.
6. The evaporator connects back to the ‘low’ side of the Compressor via the suction pipes.
Check this for excessive icing.
Excessive icing could indicate a refrigerant overcharge (Contact Azure Technical Support).
49
728 & 798 Models
Solenoid Valve Replacement
C
E
D
A
B
B
1. Turn off the water supply, press dispense buttons to release water pressure and disconnect electrical
power lead.
2. Carefully remove Top Cover, Keypad Panel and Front Panel from machine
3. Pull off Faucet (A).
4. Remove Screw (B) from underside of Mounting Plate (D) securing Solenoid Valve (C) (down to Mounting Plate).
5. Remove Screw (E) securing Mounting Plate (D).
6. Using a suitable flat bladed screwdriver, depress collet ring on push-fit connection on inlet side of solenoid valve
(at F) and disconnect pipe work.
7. Remove Solenoid Valve by drawing forwards and away from machine frame.
8. Refit Solenoid Valve by reversal of the above procedure. Ensure correct connection of water inlet pipe work and
electrical terminals.
9. Upon completion, check correct operation and for any leaks.
50
Notes
Notes
Notes
Notes
Notes
Notes
INSTALLATION & OPERATION GUIDE
728 & 798 MODELS
Head office: 31 Bolling Road, Bradford, BD4 7HN
Contact: 01226 720 490, [email protected]
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