TABLE OF CONTENTS

 

 

Page

SAFETY INFORMATION

1

RECOGNIZE SAFETY INFORMATION

1

UNDERSTAND SIGNAL WORDS

1

FOLLOW SAFETY INSTRUCTIONS

1

CO2 (CARBON DIOXIDE) WARNING

1

SHIPPING, STORING, OR RELOCATING UNIT

1

GENERAL INFORMATION

3

GENERAL DESCRIPTION

3

UNIT DESCRIPTION

3

WARRANTY REFERENCE INFORMATION

4

THEORY OF OPERATION

5

INSTALLATION

9

UNPACKING AND INSPECTION

9

IDENTIFICATION OF LOOSE-SHIPPED PARTS

9

SELECTING LOCATION

10

INSTALLING WATER ONLY LEVER KIT (P/N 3297) ON UF-1 DISPENSING

 

VALVE

10

INSTALLING UNIT

10

CUTTING HOLE IN COUNTERTOP

10

CONNECTING PLAIN WATER SOURCE LINE(S) TO UNIT

10

CONNECTING SYRUP SOURCE LINES TO UNIT

12

CONNECTING CO2 SOURCE LINE TO UNIT

13

SEALING UNIT BASE TO COUNTERTOP

13

PREPARING UNIT FOR OPERATION

13

FILL WATER TANK AND START REFRIGERATION SYSTEM

13

UNIT OPERATION

14

ADJUST WATER-TO-SYRUP “RATIO”(BRIX) OF DISPENSED PRODUCT

15

OPERATOR’S INSTRUCTIONS

17

OPERATING CONTROLS

17

DISPENSING VALVE LEVER

17

DISPENSING VALVE WITH WATER LEVER

17

DISPENSING VALVES KEYED LOCK-OUT SWITCH

17

UNIT POWER SWITCH (115 VAC, 60 HZ UNITS ONLY)

17

CARBONATOR WATER PUMP MOTOR POWER SWITCH

17

DAILY PRE-OPERATION CHECK

17

UNIT OPERATION

18

ADJUSTMENTS

18

ADJUSTING CO2 REGULATORS

18

ADJUSTING DISPENSING VALVE WATER FLOW RATE

18

ADJUSTING WATER-TO-SYRUP “RATIO”OF DISPENSED PRODUCT . .

18

REPLENISHING CO2 SUPPLY

18

REPLENISHING SYRUP SUPPLY

18

CLEANING AND SANITIZING

18

DAILY CLEANING OF UNIT

18

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Cornelius R-134A service manual Table of Contents

R-134A specifications

Cornelius R-134A is a refrigerant commonly used in various cooling and air conditioning applications. It belongs to the hydrofluorocarbon (HFC) family and has become a favored alternative to many ozone-depleting substances. Unlike its predecessors, R-12, which has been phased out due to its detrimental effects on the ozone layer, R-134A offers a more environmentally friendly solution, albeit still having global warming potential.

One of the main features of R-134A is its favorable thermodynamic properties. It exhibits a low boiling point of approximately -26.3°C (-15.3°F), making it suitable for various refrigeration applications, including automotive air conditioning, commercial cooling systems, and domestic refrigerators. Its efficiency is regarded as superior, allowing for quick heat absorption and dissipation. This efficiency translates into energy savings, ultimately benefiting both consumers and manufacturers.

R-134A also boasts a relatively high vaporization heat, demonstrating its effectiveness in heat transfer processes. The low toxicity and non-flammability of R-134A further enhance its appeal, as it poses minimal risk during handling and application. This characteristic makes R-134A safer for technicians and users compared to older refrigerants, which presented higher health hazards.

Within modern technologies, R-134A plays a crucial role in both chiller systems and heat pump applications. It is compatible with various lubricants, allowing manufacturers to utilize R-134A in existing systems with minimal modifications. However, it is essential to use the correct type of oil, as mixing different types can lead to system inefficiencies and potential failure.

Despite its advantages, R-134A has a global warming potential of around 1,430 times greater than carbon dioxide, prompting the refrigerant industry to look for alternatives. Newer refrigerants, such as R-1234yf, offer lower environmental impact, driving a shift towards more sustainable options.

In conclusion, Cornelius R-134A remains a widely used refrigerant known for its efficiency, safety, and effectiveness in heat transfer. While it has played a significant role in the refrigeration and air conditioning industries, the ongoing search for eco-friendly alternatives highlights the need for continued innovation and adherence to environmental standards.