Marco 1000950 User manual

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ColdBRU –
Service Manual
1000950, 1000950EU & 1001950US
www.marcobeveragesystems.com
Ireland Tel: [phone]
UK Tel: [phone]

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CONTENTS:
1. Introduction …………………………………………………………………………………………………………………… 3
2. Safety Instructions …………………………………………………………………………………………………………. 3
3. Specifications …………………………………………………………………………………………………………………. 4
4. Installation …………………………………………………………………………………………………………………….. 5
4.1 ColdBRU Installation ……………….……………………………………………………………………….….. 5
5. ColdBRU Setup .………..………………………………………………………………………………………………………… 7
5.1 Operating ColdBRU for the first time……………………………………………………………………………. 7
5.2 Dispense Calibration Procedure…………………………………………………………………………………… 7
6. Overview & Operation ……………………………………………………………………………………………………. 8
6.1 ColdBRU - Operation …………………..………………………………………………….……….…………. 8
7. Routine Maintenance/Internal Access …………………………………………………………………………… 11
7.1 Top Lid removal ……………………………………………………………………………………………………… 11
7.2 PCB removal …..……………………………..………………………………………………………………….. 11
7.3 Inlet Solenoid removal …….…………………………………………………………………………………. 13
7.4 Sprayhead and Sprayhead disk removal……………………………………………………………... 15
7.5 Flow Meter removal …………….….………………………………………………………………….…….. 17
8. Diagnostics/Trouble Shooting ……………………………………………………………………………………….. 19
9. Wiring Diagram …..…………………………………………………………………………………………………….. 20
9.1 Wiring Diagram …………………………………………………………………………………………………. 20
10. Plumbing Drawing ………………………………………………………………………………………………………… 21
10.1 Plumbing Drawing ……………………………………………………………………………………………….. 21
11. Parts Diagram and lists ……………………………………………………………………………………………. 22
11.1 Spare Parts Diagram …………………………………………………………………………………………..….. 22
11.2 Spare Parts List ………………………………………………………………………………………………………. 23

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1. INTRODUCTION
The information provided in this manual is intended to assist in the installation and maintenance
of the Marco ColdBRU. Please read the instructions carefully to prevent accidents and ensure an
efficient installation.
This manual is not a substitute for any safety instructions or technical data affixed to the machine
or its packaging. All information in this manual is current at the time of publication and is subject
to change without notice.
Only technicians or service providers authorised by Marco should carry out installation and
maintenance of these machines.
Marco accepts no responsibility for any damage or injury caused by incorrect or unreasonable
installation and operation.
2. SAFETY INSTRUCTIONS
When using electrical appliances, basic safety precautions should always be followed to prevent
the risk of fire, electric shock, burns, or other injuries or damages.
• Read all operating and safety instructions carefully.
• This appliance must be placed/installed on a horizontal flat stable surface.
• The ambient temperatures this appliance should operate within are 5 °C - 35 °C.
• This appliance may be placed in self-service areas if attended to by trained personnel.
• Risk of flooding, the hose supplied with the ColdBRU is non-toxic food quality tested to 190psi.
However, a hose is not a permanent connection. It is, therefore, advisable to switch off the
machine and close the stopcock valve when the machine is not in use, e.g. overnight etc.
• The utmost care has been taken in the manufacture and testing of this machine. Failure to
install, maintain and / or operate this machine according to the manufacturer’s instructions may
result in conditions that can cause injury or damage to property. If in any doubt about the
serviceability of the machine always contact the manufacturer or your own supplier for advice.
• This machine is not intended for use by persons (including children) with reduced physical,
sensory, or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the machine by a person responsible for their
safety.
• Children should be supervised to ensure that they do not play with the machine.
• In the event any wires are damaged, such wires can only be replaced by experts or profes-
sional after service staff from the manufacturer after service department or similar function
departments.
• CAUTION - Risk of fire and electric shock. Only to be used with manufacturer’s specified power
cord set. Marco p/n 1501487 (USA), 1501488 (EU), 1501489 (UK/Ire).
• This appliance should not be installed in an area where a water jet could be used to clean it.
• Access to the service area of the appliance is restricted to persons having knowledge and
practical experience of the appliance and the relevant safety and hygiene requirements.

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3. SPECIFICATIONS
ColdBRU 1000950, 1000950EU, 1001950US
Performance
The maximum dispense of the ColdBRU is 10.5L / 2.75 Gallons (US)
Electrical
Mains Connection
Earthed Mains Plug to IEC 230vac
(UK –3-Pin Plug, BS1363)
(EU –CEE7 Schuko)
(US (120v –NEMA 5-15)
Rating
@230V
15W
0.07A
@120v
15W
0.125A
Plumbing
Fittings
Required Pressure
0.75” BSP (or 3/8” compression for US versions) food grade inlet
hose supplied.
14.5 –145psi (0.1-1 MPa)
Dimensions
Height (mm/inches)
Width (mm/inches)
Depth (mm/inches)
702/27.7
325/12.8
428/16.8

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4. INSTALLATION
4.1 ColdBRU Installation
Electrical Installation:
•Electrical specification: 15W-230VAC-50/60Hz
15W-120VAC-60Hz
•A moulded 13A IEC power cord is provided. This should be plugged into the IEC connection on the
rear of the ColdBRU and plugged into a suitable 13A power outlet.
•When installing the machine, always observe the local regulations and standards.
Plumbing Installation:
•Mains water pressure required (limits): 14.5 –145psi (0.1 -1 1 MPa)
•Fit a stop Valve on a cold water line and attach a 3/4" BSP male fitting, e.g. 3/4" x 1/2" or washing
machine type stop valve (3/8” compression US).
•Connect straight tailpiece of the hose to the stop valve fitting. Make sure that the pre-attached
sealing washer is fitted.
•Turn on the water to flush any impurities, dust etc. from the inlet hose and water pipe. Allow
several litres through.
•Connect 1/4” hose to the Bulkhead connector of the ColdBRU (1/4” pushfit). Make sure the 1/4”
hose is pushed in fully.
•Turn on water and check for leaks.

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4.1 ColdBRU Installation (cont.)
•Check that all installation procedures have been carried out.
•Ensure water valve is on.
•Plug ColdBRU into suitable socket.
Connecting ColdBRU to water
Connecting ColdBRU to power

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5. ColdBRU SETUP
5.1 Operating ColdBRU for the First Time
•Check that all installation procedures have been carried out.
•Ensure water valve is on.
•Plug ColdBRU into suitable socket.
5.2 Dispense Calibration Procedure (Required to be completed on initial startup)
The Dispense Calibration procedure should only be run if the machine has had major component
change, such as PCB or inlet solenoid that requires calibration settings to be re-done, or there has
been a change in the mains water pressure. Calibration option only remains on the screen for 5
seconds after power up. If you miss this window, power off the machine and try again.
Once the water weight has been input into the machine, a dispense operation can be performed
to check the accuracy of dispense.

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6. OVERVIEW & OPERATION
6.1 ColdBRU –Operation
When performing this operation, use the 7.67L container to catch dispensed water. This can then
be weighed to confirm the machine is within spec

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7. MENU NAVI

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7. ROUTINE MAINTAINENCE/INTERNAL ACCESS
Maintenance should be carried out by Marco approved technicians only. Before undertaking
routine maintenance on ColdBRU disconnect machine from mains power and water supply.
7.1 Top Lid removal:
1. Remove the screws in the top lid with a suitable screwdriver.
2. Lift lid upwards and remove.
7.2 PCB removal (1600387 / 1600391(US)):
1. Disconnect machine from mains power.
2. Remove Top Lid as per section 7.1
3. Disconnect all wiring connected to the PCB.
4. Remove two countersink screws and the two screws attaching the PCB bracket inside the head
of the machine with a suitable screwdriver shown in the picture below.
``

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6. Remove the two nuts attaching the Sprayhead bracket to the Head assembly. This will allow you
to move the components attached to the Sprayhead bracket and give enough room to remove the
PCB bracket. Remove the PCB bracket with the PCB still attached.
7. Remove 4 screws to release PCB from PCB bracket.

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7.3 Inlet solenoid removal (230V –1502196 / 120V - 1502198)
1. Disconnect machine from mains power.
2. Disconnect all wiring connected to the PCB.
3. Close water supply valve at the source and remove 1/4” hose from the bulkhead connector at
the back of the machine. Note: Water already in the machine and 1/4” hose coming from the
mains water supply will drain upon removal.
4. Remove Top lid side panel as per section 8.1
5. Disconnect all wires and hoses to the inlet solenoid. Remove the Sprayhead bracket from the
head assembly by removing the two m6 nuts as shown below.

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6. Once the Sprayhead bracket and all attached parts have been removed from the head assembly
you will have access to the two solenoid retaining screws. Remove these to detach the inlet
solenoid. Note: orientation of solenoid mounting bracket.

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7.4 Sprayhead and Sprayhead disc removal
1. Disconnect machine from mains power.
2. Close water supply valve at the source and remove 1/4” hose from the bulkhead connector at
the back of the machine. Note: Water already in the machine and 1/4” hose coming from the
mains water supply will drain upon removal.
3. If only replacing the Sprayhead disk, you can access and remove the m6 x 50mm screw from the
underside of the Welded head assembly as shown below. Note: If removal of the entire
Sprayhead is required, skip this step and continue to step 4.
4. Remove Top lid side panel as per section 8.1
5. Disconnect all wires from the PCB.
6. Disconnect the Valve Elbow adaptor and remove the two nuts that hold the Sprayhead bracket
in place. Lift the Sprayhead bracket with all attached parts out of the machine.

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7. Remove the Sprayhead from the Sprayhead bracket by unscrewing the m6 nut shown below.
Using an appropriately sized wrench, remove the elbow from the Spray head
3.

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7.5 Flow meter replacement (2301183)
1. Disconnect machine from mains power.
2. Disconnect all wiring connected to the PCB.
3. Close water supply valve at the source and remove 1/4” hose from the bulkhead connector at
the back of the machine. Note: Water already in the machine and 1/4” hose coming from the
mains water supply will drain upon removal.
4. Remove Top lid side panel as per section 8.1
7. Disconnect the Valve Elbow adaptor and remove the two nuts that hold the Sprayhead bracket
in place. Lift the Sprayhead bracket with all attached parts out of the machine.
8. Remove tubing connected to the Flow meter.

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9. Cut cable ties to release Flow meter from the Sprayhead bracket.

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8. DIAGNOSTICS
TROUBLESHOOTING –DIAGNOSTIC GUIDE:
EMATICS
Reported Issue
Component
Check
1.
Not dispensing
water
Valve Inlet Solenoid 1/4" push fit
(230V –1502196 / 120V - 1502198)
•Check power supply
from PCB/230V ok.
•Choose a brew in the
MENU. While the
brew is operating,
check the Power to
the solenoid is within
range, 220-240v AC.
If there is no Power,
change the PCB.
•If there is power and
the solenoid fails to
operate, replace the
Solenoid valve
2.
Inaccurate water
volumes
Digimesa Flow Meter (2301183)
•Recalibrate the
machine as per
section 5 “ColdBRU
Setup”.
•If issue persists check
power supply from
PCB/230V ok.
•If 230V from PCB
replace Flow Meter.
3.
Not dispensing
water
PCB Control Mix 230V / PCB Control
Mix 110V (1600387 / 1600391)
•Check power supply
from 230V ok.
•Select a brew and
begin brew program.
Check power
between PCB and
components/
•If components not
receiving power,
replace PCB

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9. Wiring Diagram
9.1 Wiring Diagram