Trouble

Probable Cause

Remedy

COMPRESSOR OPERATES

A. Cooling capacity is exceeded

CONTINUOUSLY BUT DOES

by over-drawing.

NOT FORM SUFFICIENT ICE

 

BANK.

 

A.Reduce amount of drinks drawn per given time.

B.Unit located in excessively hot area or air circulation through condenser coil is restricted.

B.Relocate unit or check and if necessary, clean condenser coil as instructed.

NOTE: Ice bank freezes from bottom of evaporator upward. A refrigerant leak or insufficient charge might show an ice bank at bottom and not at top of evaporator.

AGITATOR MOTOR NOT

A.

Power switch (if applicable) in

OPERATING.

 

“OFF”position.

 

B.

Unit power cord or

 

 

refrigeration assembly power

 

 

cord unplugged.

A.Place power switch in “ON”position.

B.Connect power cord(s).

C.No power source (blown fuse or tripped circuit breaker).

C.Replace fuse or reset circuit breaker. (NOTE: Fuse or circuit breaker are not part of Unit).

D.

Agitator motor propeller

D.

Remove obstruction.

 

obstructed.

 

 

E.

Low voltage.

E.

Voltage must be at least 103 volts

 

 

 

(115 VAC unit) or 208 (230 VAC

 

 

 

unit) at compressor terminals

 

 

 

when compressor is trying to

 

 

 

start.

F.

Loose, disconnected, or

F.

Tighten connections or replace

 

broken wiring.

 

broken wiring.

G.

Inoperative agitator motor.

G.

Replace agitator motor.

312027000

46

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Page 51
Image 51
Cornelius R-134A Compressor Operates, Continuously but does, Not Form Sufficient ICE Bank, Agitator Motor not, Operating
Page 50 Page 52

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.
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