Cornelius NITROPRO MINI Setup guide

SPECIALTY BEVERAGE DISPENSER
NITROPRO MINI
Installation And Operator Manual
Release Date: November 16, 2018
Publication Number: 548000106INS
Revision Date: October 24, 2019
Revision: A
Visit the Cornelius web site at www.cornelius.com for all your Literature needs.

The products, technical information, and instructions contained in this manual are subject to change without notice. These
instructions are not intended to cover all details or variations of the equipment, nor to provide for every possible contingency in
the installation, operation or maintenance of this equipment. This manual assumes that the person(s) working on the equipment
have been trained and are skilled in working with electrical, plumbing, pneumatic, and mechanical equipment. It is assumed that
appropriate safety precautions are taken and that all local safety and construction requirements are being met, in addition to the
information contained in this manual.
This Product is warranted only as provided in Cornelius’ Commercial Warrant applicable to this Product and is subject to all of
the restrictions and limitations contained in the Commercial Warranty.
Cornelius will not be responsible for any repair, replacement or other service required by or loss or damage resulting from any
of the following occurrences, including but not limited to, (1) other than normal and proper use and normal service conditions
with respect to the Product, (2) improper voltage, (3) inadequate wiring, (4) abuse, (5) accident, (6) alteration, (7) misuse, (8)
neglect, (9) unauthorized repair or the failure to utilize suitably qualified and trained persons to perform service and/or repair of
the Product, (10) improper cleaning, (11) failure to follow installation, operating, cleaning or maintenance instructions, (12) use
of “non-authorized” parts (i.e., parts that are not 100% compatible with the Product) which use voids the entire warranty, (13)
Product parts in contact with water or the product dispensed which are adversely impacted by changes in liquid scale or chemi-
cal composition.
Contact Information:
To inquire about current revisions of this and other documentation or for assistance with any Cornelius product contact:
www.cornelius.com
800-238-3600
Trademarks and Copyrights:
This document contains proprietary information and it may not be reproduced in any way without permission from Corne-
lius.
This document contains the original instructions for the unit described.
CORNELIUS INC
101 Regency Drive
Glendale Heights, IL
Tel: + 1 800-238-3600
Printed in U.S.A.

Nitropro Mini Installation Manual
© 2018, Cornelius Inc. - i - Publication Number: 548000106INS
TABLE OF CONTENTS
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Read And Follow All Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Different Types of Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Qualified Service Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Shipping And Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Mounting On A Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unit dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Nameplate Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Ice Bank/Pull Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Counter Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Minimum Airflow Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting the Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Plumbing and Water Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Filling And Draining The Ice Bath . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Filling The Ice Bath . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Draining The Water Bath . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Priming/Flushing Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Ratio Setting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Checking/Adjusting the RATIO Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Operating the Controls – Dip Switch Settings: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Operating the Controls - Micro Adjustment Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Using the Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TDS Measurement Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
General Guidelines For Targeting Desired TDS/Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Option 1: Using a TDS Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Additional Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Option 2: Using a BRIX Refractometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Additional Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Option 3: Manually Checking Volume Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Additional Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Nitropro Mini Installation Manual
Publication Number: 548000106INS - ii - © 2018, Cornelius Inc.
Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Clean Splash Zones and Dispense Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Weekly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Cleaner Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Sanitizer Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Changing Coffee Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Unit Foam Head Height Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
System Electrical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
System Plumbing Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Nitropro Mini Installation Manual
© 2018, Cornelius Inc. - 1 - Publication Number: 548000106INS
SAFETY INSTRUCTIONS
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
Safety Overview
• Read and follow ALL SAFETY INSTRUCTIONS in this manual and any warning/caution labels on
the unit (decals, labels or laminated cards).
• Read and understand ALL applicable OSHA (Occupational Safety and Health Administration) safety regulations
before operating this unit.
Recognition
Different Types of Alerts
!
DANGER:
Indicates an immediate hazardous situation which if not avoided WILL result in serious injury, death or equipment damage.
!
WA R N I N G :
Indicates a potentially hazardous situation which, if not avoided, COULD result in serious injury, death, or equipment
damage.
!
CAUTION:
Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or moderate injury or equipment
damage.
SAFETY TIPS
• Carefully read and follow all safety messages in this manual and safety signs on the unit.
• Keep safety signs in good condition and replace missing or damaged items.
• Learn how to operate the unit and how to use the controls properly.
• Do not let anyone operate the unit without proper training. This appliance is not intended for use by very young chil-
dren or infirm persons without supervision. Young children should be supervised to ensure that they do not play with
the appliance.
• Keep your unit in proper working condition and do not allow unauthorized modifications to the unit.
NOTE: The dispenser is not designed for a wash-down environment and MUST NOT be placed in an area
where a water jet could be used.
Recognize Safety Alerts
This is the safety alert symbol. When you see it in this manual or on the unit, be alert to the
potential of personal injury or damage to the unit.
!

Nitropro Mini Installation Manual
Publication Number: 548000106INS - 2 - © 2018, Cornelius Inc.
QUALIFIED SERVICE PERSONNEL
!
WA R N I N G :
Only trained and certified electrical, plumbing and refrigeration technicians should service this unit.
ALL WIRING AND PLUMBING MUST CONFORM TO NATIONAL AND LOCAL CODES. FAILURE TO COMPLY
COULD RESULT IN SERIOUS INJURY, DEATH OR EQUIPMENT DAMAGE.
IF THE SUPPLY CORD IS DAMAGED, IT MUST BE REPLACED BY THE MANUFACTURER, ITS SERVICE AGENT
OR SIMILARLY QUALIFIED PERSONS IN ORDER TO AVOID A HAZARD.
SAFETY PRECAUTIONS
This unit has been specifically designed to provide protection against personal injury. To ensure continued protection observe
the following:
!
WA R N I N G :
Disconnect power to the unit before servicing following all lock out/tag out procedures established by the user. Verify all of the
power is off to the unit before any work is performed.
FAILURE TO DISCONNECT THE POWER COULD RESULT IN SERIOUS INJURY, DEATH OR EQUIPMENT
DAMAGE.
!
CAUTION:
Always be sure to keep area around the unit clean and free of clutter. Failure to keep this area clean may result in injury or
equipment damage.
DO NOT STORE EXPLOSIVE SUBSTANCES SUCH AS AEROSOL CANS WITH A FLAMMABLE
PROPELLANT IN THIS APPLIANCE.
CHILDREN SHALL NOT PLAY WITH THE APPLIANCE.
CLEANING AND USER MAINTENANCE SHALL NOT BE MADE BY CHILDREN WITHOUT SUPERVISION.
SHIPPING AND STORAGE
!
CAUTION:
Before shipping, storing, or relocating the unit, the unit must be sanitized and all sanitizing solution must be drained from the
system. A freezing ambient environment will cause residual sanitizing solution or water remaining inside the unit to freeze
resulting in damage to internal components.
MOUNTING ONA COUNTER
!
WA R N I N G :
When installing the unit on a counter top, the counter must be able to support a weight in excess of 185 lbs. (83.9 kg.) to insure
adequate support for the unit.
FAILURE TO COMPLY COULD RESULT IN SERIOUS INJURY, DEATH OR EQUIPMENT DAMAGE.
THE APPLIANCE HAS TO BE PLACED IN A HORIZONTAL POSITION

Nitropro Mini Installation Manual
© 2018, Cornelius Inc. - 3 - Publication Number: 548000106INS
SPECIFICATIONS
Tabl e 1
Line Voltage - V 115 230
Frequency - Hz 60 50
Phase 1 1
Max Current - A 5 2
Operating Ambient temperature - °F (°C) 50 - 90 (10 - 32)
Water Inlet Pressure - psi (Kpa) 40 - 65 (275.8 - 448.2)
Water Inlet Temperature - °F (°C) 40 - 90 (4 - 32)
Water Inlet Size - Inches (mm) 3/8” (95) SAE Male flare fitting on dispenser
Equipment Weight
- Lbs (Kgs)
Dry 120 (54.4)
Operating 185 (83.9)
Ice Bank Weight - Lbs (Kgs) 6 - 8 (2.7 - 3.6)
Clearance
Requirement
Top - Inches (mm) 12 (348)
Sides - Inches (mm) 4 (101.6)
Back - Inches (mm) 4 (101.6)
Unit Dimensions
Height - Inches (mm) 34.05 (865), 30.05 (763) Without legs
Width - Inches (mm) 10.44 (265)
Depth - Inches (mm) 24.47 (621.5), 25.91 (658) at handles

Nitropro Mini Installation Manual
Publication Number: 548000106INS - 4 - © 2018, Cornelius Inc.
UNIT DIMENSIONS
Figure 1
RECEIVING
Each unit is completely tested and inspected before shipment. At the time of shipment, the carrier accepts the unit and any
claim for damage must be made with the carrier.
Upon receiving the unit(s) from the carrier, inspect the carton for visible damage. If damage exists, have the carrier make a
note on the bill of lading and file a claim with the carrier.
UNPACKING
• Remove staples securing carton to pallet.
• Lift carton up and off of unit.
• Remove inserts and shipping bag.
• Open upper cabinet door and remove installation kit.
• Remove bolts securing unit to pallet.
• Lift unit off of pallet.
• Attach 4” length legs to the unit.
NOTE: Do not lay the unit on it’s side or back. This may cause vital oils to drain from the compressor result-
ing in damage during start-up and consequently voiding the warranty.

Nitropro Mini Installation Manual
© 2018, Cornelius Inc. - 5 - Publication Number: 548000106INS
NAMEPLATE DATA
Tabl e 2
ICE BANK/PULL DOWN
Weight 6-8 lbs. (2.7 - 3.6 kg.). Pull Down: 3 hours at 75°F (24°C)
Figure 2
Models VAC Amps Ph Hz Refrigerant Test Pressure psi (Kpa) (bar)
Oz Grams Type High side Low side
Nitropro Mini 115 5 1 60 5.64 160 R-134a 315 (2171.9) (21.7) 140 (965.3) (9.7)
Nitropro Mini 230 2 1 50 5.64 160 R-134a 315 (2171.9) (21.7) 140 (965.3) (9.7)
Left Tap Handle
Drip Tray
Merchandiser
Legs
Panel Right
Panel Left
Panel Top
Panel Rear
Door Hinge
Louvers
Door Handle
Splash Panel
Cup Rest
Key lock
Right Tap Handle
NOTE: Left Tap Handle - Dispenses Still Coffee.
Right Tap Handle - Dispenses Nitro Coffee.

Nitropro Mini Installation Manual
Publication Number: 548000106INS - 6 - © 2018, Cornelius Inc.
INSTALLATION KIT
This unit comes with the following components to complete the installation setup.
• Manual • Cup rest
• Legs (4) • Keys
• Tube assembly • Power cord
• BIB adapter • 3/8 FFL x 3/8 barbed elbow
• Drip tray • 3/8 Flare gasket

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© 2018, Cornelius Inc. - 7 - Publication Number: 548000106INS
REQUIREMENTS
COUNTER LOCATION
Select a location in a well ventilated area, close to a grounded electrical outlet. If possible do not place the unit close to hot
and/or steaming machines.
MINIMUM AIRFLOW CLEARANCE
The minimum airflow clearance is: 4” (10.16 cm) in back, 12” (30.48 cm) on top, 4” (10.16) at sides and open to the front.
!
IMPORTANT:
Condenser air is drawn in from the bottom of the rear panel and discharged out the top of the rear panel & side panels.
Failure to maintain clearance space will reduce capacity of the unit and cause premature compressor failure.
The Dispenser needs to be placed using 4” legs that are included.
Figure 3
Minimum 12’’ Air Flow
Clearance at Top
and 4’’ at Sides
Minimum 4’’
Clearance at Back

Nitropro Mini Installation Manual
Publication Number: 548000106INS - 8 - © 2018, Cornelius Inc.
CONNECTING THE WATER SUPPLY
NITROPRO MINI Dispenser is designed to dispense cold brew nitro coffee. It is very important that the incoming water line
be dedicated for use by the dispenser only and does not have other machines connected which could cause a water surge, (i.e.,
a dishwasher, coffee maker, etc.).
!
IMPORTANT:
The water supply should be consistent with proper water quality standards (neutral pH of 7.0 to 8.0), and should not be
connected to a water softener. It is the installer’s responsibility to ensure that all water connections to the dispenser are
sized, installed with adequate backflow protection and maintained to comply with Federal, State, and Local Laws.
PLUMBING AND WATER SUPPLY REQUIREMENTS
This dispenser must be connected to a COLD WATER system with operating pressure between 40 psi (275.8 kPa) (2.8 bar)
minimum (dynamic) and 65 psi (448.2 kPa) (4.5 bar) maximum (static). This water source must be capable of producing a
minimum flow rate of 3 fluid ounces (88.7 ml) per second. A shut off valve should be installed in the line before the dispenser.
Install a regulator in the line when pressure is greater than 65 psi (620.5 kPa) to reduce it between 40 and 65 psi (dynamic). If
water pressure is below 40 psi, a recommended water booster and regulator should be installed prior to the machine inlet.
!
WA R N I N G :
This equipment must be installed to comply with the International Plumbing Code of the International Code Council and the Food
Code Manual of the Food and Drug Administration (FDA). For models installed outside the U.S.A., you must comply with the
applicable Plumbing/Sanitation Code for your area.
Failure to comply could result in serious injury, death or damage to the equipment.
1. Install the flared gasket P/N 40897 into the 3/8" swivel nut P/N 77040900. Figure (4a )
2. Secure the swivel nut onto the water inlet located at the rear of the dispenser. Secure the flexible supply tubing to the 3/8"
barbed end with the supplied clamps.Figure (4b)
Figure 4
Water Inlet
with Supply Tubing
Connected
Figure (4b)
Figure (4a)

Nitropro Mini Installation Manual
© 2018, Cornelius Inc. - 9 - Publication Number: 548000106INS
ELECTRICAL REQUIREMENTS
!
CAUTION:
Only trained and certified electrical technicians should replace the power cord or the unit should be returned to an Authorized
Service Center for power cord replacement.” The replacement cord must meet all requirements of the original equipment
manufacturer.
!
WA R N I N G :
Indicates a potentially hazardous situation which, if not avoided, COULD result in serious injury, death, or equipment
damage.
1. A minimum of 15 amps electrical service is needed for 120VAC power supply. A minimum of 10 amps electri-
cal service is needed for 230VAC power supply.
2. 6 ft. long (1.83 m) power cord with 3-prong plug is included with the dispenser. Export models are shipped with
a European plug.
NOTE: When the power is supplied to the unit, the air compressor comes on and runs for 10-15 seconds ini-
tially.

Nitropro Mini Installation Manual
Publication Number: 548000106INS - 10 - © 2018, Cornelius Inc.
FILLING AND DRAINING THE ICE BATH
FILLING THE ICE BATH
The ice bath holds approximately 1.62 gallons (6.13 liters) of water. The fill tube is located behind the front splash panel and
capped with a red 0.5” plug.
1. Remove the splash panel.
Figure 5
2. Remove the 0.5” plug and attached the tube to the LEFT nozzle.
NOTE: Do not connect to the right nozzle as it will cause the gas to run continuously.
3. Ensure that the coffee BIB is disconnected inside the cabinet. With the tube attached to the left nozzle, close the
door, replace the drip tray and pull the Left Tap Handle until the tank has filled and water trickles from the over
flow.
NOTE: If the BIB is not disconnected from the cabinet, the ice bank will fill with product and will not work.
Figure 6
Overflow Tube

Nitropro Mini Installation Manual
© 2018, Cornelius Inc. - 11 - Publication Number: 548000106INS
4. Once the ice bath is full, store the drain/fill tube vertically, back in its original location, with the 0.5” cap
attached. The drain/fill tube can now be used as a “sight glass” to monitor the water level in the ice bath.
Figure 7
DRAINING THE WATER BATH
When the unit is to be moved, relocated, or transported the water and ice in the ice bath need to be drained. Disconnect the
power to the unit before draining the ice bath. This can be done by removing the splash panel as in step 1 above, pulling out the
drain/fill tube and removing the red cap. Pointing the tube down into a drain or bucket will allow the ice bath to drain.
NOTE: After draining the water there may still be ice on the refrigeration evaporator inside the ice bath. This
ice should be melted and the resulting water also drained. This may take several hours for the ice to
completely melt.
!
WA R N I N G :
The ice bath needs to be completely drained before moving, relocating, or transporting the unit.
FAILURE TO COMPLY COULD RESULT IN SERIOUS INJURY, DEATH OR EQUIPMENT DAMAGE.

Nitropro Mini Installation Manual
Publication Number: 548000106INS - 12 - © 2018, Cornelius Inc.
PRIMING/FLUSHING WATER SYSTEM
Close the door and pull the Tap Handles for a few seconds. Repeat until a steady flow of water is observed from all dispense
valves.
NOTE: Some splashing may occur during this purge cycle.
NOTE: Dispense motor switch should be in “ON position”.
NOTE: When the power is supplied to the unit, the air compressor comes on and runs for 10-15 seconds ini-
tially.
Figure 9

Nitropro Mini Installation Manual
© 2018, Cornelius Inc. - 13 - Publication Number: 548000106INS
RATIO SETTING PROCEDURE
NOTE: If concentrate is not properly thawed, it will adversely affect the amount of concentrate dispensed.
Thawed product should be between 35°F/1.6°C to 40°F/4.4°C. Thawed product should have no ice
particles remaining in the BIB.
SUPPLIES
• 1 - Small 12 oz. cup (354.8 ml)
• 1 - Large 21 oz. cup (621.1 ml)
• 1 - Straw
• 1 - Thermometer
• 1 - Phillips head screw driver
• Paper Towels
CHECKING/ADJUSTING THE RATIO SETTING
Operating the Controls – Dip Switch Settings:
1. The unit is setup to have ‘pre-configured’ ratios at options of 3:1, 4:1, 5:1 and 7:1. These ratios are chosen by
setting the dip-switch to the corresponding number in the table below.
2. The dip-switches are accessed by removing the splash panel (see page 10 for removing splash panel in the ‘Fill-
ing the Ice Bath’ steps).
3. To set the dip switch position, use a small flat head screw driver to set the desired switch flipped ‘UP’ with all
other switches ‘DOWN’.
NOTE: If multiple switches are up at the same time, it will go to a factory default setting and not target the
desired ratio.
NOTE: The unit should come pre-configured at a factory setting of ‘5:1’ at dip-switch ‘position 3’
See photo below for an example of the dip-switch at ‘position 3’ for a target ‘5:1’ setting.
Figure 10
Tabl e 3
Concentrate Target RatioDipSwitchPosition
3:1 1
4:1 2
5:1 3
7:1 4

Nitropro Mini Installation Manual
Publication Number: 548000106INS - 14 - © 2018, Cornelius Inc.
Operating the Controls - Micro Adjustment Buttons
Directly to the right of the dip-switches are two micro-switch buttons marked ‘DOWN’ and ‘UP’. These buttons adjust the
motor speed down and up to adjust the ratio further. While the machine comes preset to 5:1, the default settings will have some
variance due to coffee products used, water supply variance, and unit tolerances. These buttons can be used to calibrate the
machine accurately to the desired ratio once installed.
Using the Buttons
1. Pressing on the ‘UP’ micro-switch button will adjust the motor speed up, resulting in a lower ratio (i.e. higher
TDS/Brix)
2. Pressing on the ‘DOWN’ micro-switch button will adjust the motor speed down, resulting in higher ratio (i.e.
lower TDS/Brix).
3. Typically, pressing the button once will adjust the average TDS by a value of .02 to .08. The amount of change
is dependent on the coffee product, and assumed a thoroughly mixed (homogenous) coffee concentrate.
4. Example: Upon installation of the machine, a TDS of 1.45 is measured at the dispense point. If the target TDS
for the theoretical product is actually 1.6. The ‘UP’ button should be pressed to increase the TDS. The button
may need to be pressed several times to reach the desire result.

Nitropro Mini Installation Manual
© 2018, Cornelius Inc. - 15 - Publication Number: 548000106INS
TDS MEASUREMENT GUIDE
GENERAL GUIDELINES FOR TARGETING DESIRED TDS/RATIO
1. Set the dip-switch to the desired ratio target setting.
2. Shake the bag, prior to installing.
3. Dispense approximately 16oz of drink and discard. This is done to purge out any water or coffee from previous
settings.
4. Draw an 8oz drink into a clean dry cup, and measure the temperature to confirm the drink is between 35 to
45°F.
NOTE: Drink temperature must be maintained to properly set the ratio of the unit.
5. Stir the sample thoroughly, and measure the TDS of the drink (Use any of the 3 options described below to
measure the TDS / Ratio).
6. If the TDS matches the desired range of the product, not further adjustments are necessary. If the TDS is above/
below required the desired setting, use the ‘UP’ or ‘DOWN’ Micro buttons as necessary to target the desired
value.
NOTE: A 16oz drink should be dispensed to purge the previous setting before measuring again.
NOTE: It is recommended to make adjustments in 1-2 button pushes at a time to avoid ‘overshooting’ the target
value.
7. Once the desired value is reached, the setup is complete and should be stable with standard maintenance of the
equipment. The splash panel can be placed back on and no further work is needed.
NOTE: This value will not reset from cleaning mode or power loss.
NOTE: If a coffee concentrate flavor, manufacturer or ratio type is changed, then this process should be
repeated. This process is not needed for changing BIBs of the same type of coffee concentrate.
There are 3 different methods that can be used to check/calibrate the ratio setting of the equipment.
1. Using a TDS Meter
2. Using a Brix Meter/Refractometer
3. Manually Checking Volume Ratio
For all 3 methods, first access the ratio control board by removing the splash panel (see Page 10 for removing splash panel in
the ‘Filling the Ice Bath’ steps).

Nitropro Mini Installation Manual
Publication Number: 548000106INS - 16 - © 2018, Cornelius Inc.
OPTION 1: USING ATDS METER
Additional Supplies
• Coffee TDS meter
A TDS meter measures the Total Dissolved Solids in a drink. In the case of coffee, it measures the level of extraction and can
be used to ensure the right ratio of water to coffee concentrate is achieved. If the TDS target is known, a TDS meter will allow
for a very simple process to measure and ensure properly calibration of the equipment.
1. Follow instructions for the TDS meter to ensure proper calibration and ‘zero’ set prior to starting this process.
2. Follow steps 1-5 in the ‘General Guidelines for Targeting Desired TDS/Ratio’ section (refer to page 15).
3. Using a straw, transfer a small sample of the finished drink to a clean cup for temperature compensation.
4. Let the small sample warm to room temperature before transferring to the TDS meter lens (refer to operating
instructions specific to your coffee TDS meter for exact process).
5. Check TDS value... etc.
6. Adjust the unit settings and purge as noted in steps 6-7 in the ‘General Guidelines for Targeting Desired
TDS/Ratio’section (refer to page 15).
NOTE: This method measures TDS, so the ‘UP’ button will adjust TDS up, and the ‘DOWN’ button will adjust TDS
down.
OPTION 2: USING ABRIX REFRACTOMETER
Additional Supplies
• Refractometer
A brix refractometer is used to measure the sugar content in aqueous solutions. This method may not apply to all coffee
concentrates, but many concentrates have natural sugars that allow a brix refractometer to be used. In order to use this method,
the target brix value must be known for the coffee concentrate.
1. Follow instructions for the brix refractometer to ensure proper calibration and ‘zero’ set prior to starting this
process.
2. Follow steps 1-5 in the ‘General Guidelines for Targeting Desired TDS/Ratio’ section. (refer to page 15).
3. Using a straw, transfer a small sample of the finished drink to the brix refractometer meter lens (refer to operat-
ing instructions specific to your brix refractometer for exact process).
4. Check the brix value on the meter.
5. Adjust the unit settings and purge as noted in steps 6-7 in the ‘General Guidelines for Targeting Desired
TDS/Ratio’ section (refer page 15).
NOTE: Since this method measures Brix, so the ‘UP’ button will adjust Brix up, and the ‘DOWN’ button will adjust
Brix down.