Barker AGB, Installation & Operation Manual

R-744 (CO

2

) NOTICE

For Systems Utilizing R-744 (CO

2

) Refrigerant

For refrigeration units that utilize R-744 (CO

2

), pressure relief and pressure-regulating relief valves may need 

to be installed based on the system capacity.  The valves need to be located such that no stop valve is posi-
tioned between the relief valves and the parts or section of the system being protected.

When de-energizing refrigeration units containing R-744 (CO

2

), venting of the R-744 (CO

2

) refrigerant may 

occur through the pressure regulating relief valves.  

These valves are located on the refrigeration system 

and not on the case model.  

If venting does occur, the valve must not be defeated, capped, or altered by any 

means.

WARNING:  Under  no  circumstances  should  any  component  be  replaced  or  added  without  consulting 
Hillphoenix  Field  Service  Engineering.    Utilizing  improper  components  may  result  in  serious  injury  to 
persons or damage to the system.

LIABILITY NOTICE

For Cases with Shelf Lighting Systems

Hillphoenix does NOT design any of its shelf lighting systems or any of its display cases with shelf lighting 
systems for direct or indirect exposure to water or other liquids.  The use of a misting system or water hose 
on a display case with a shelf lighting system, resulting in the direct or indirect exposure of the lighting 
system to water, can lead to a number of serious issues (including, without limitation, electrical failures, 
fi re, electric shock, and mold) in turn resulting in personal injury, death, sickness, and/or serious property 
damage (including, without limitation, to the display itself, to the location where the display is situated 
[e.g., store] and to any surrounding property).  DO NOT use misting systems, water hoses or other devices 
that spray liquids in Hillphoenix display cases with lighted shelves.

If a misting system or water hose is installed or used on a display case with a shelf lighting system, then 
Hillphoenix shall not be subject to any obligations or liabilities (whether arising out of breach of contract, 
warranty, tort [including negligence], strict liability or other theories of law) directly or indirectly resulting 
from, arising out of or related to such installation or use, including, without limitation, any personal injury, 
death or property damage resulting from an electrical failure, fi re, electric shock, or mold.

P079211M, REVO

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