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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Kia Clarus (1995 issue)

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Kia Clarus
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The two-regime relay of pressure
The refrigerant (R-134A)
Basic maintenance of the cooling system
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The refrigerant (R-134A)




A warning

Nodes systems with R-12 and R-134A are not interchangeable. Do not replace components of the system with R-134A nodes of the system with R-12 and vice versa. Mixing units of these two types of systems can lead to failure and damage to the nodes of the air conditioner.


System 134A refrigerant (R-134A)

In order to eliminate the use of refrigerants, chlorofluorocarbons (CFCs), which can destroy the ozone layer, Kia Motor Corp. introduced on this car a new cooling system that requires the use of the refrigerant CFC. The new refrigerant known as R-134a. For many properties, including the form and function, a new type of refrigerant R-12 is similar.

However R134a - based refrigerant is a hydrofluorocarbon (HFC), whereas R-12 - refrigerant CFC. Due to the lack of chlorine in the molecular structure R-134a applications it will not damage the ozone layer.

In most existing car air conditioners are used, requiring the use of R-12 as refrigerant. In the absence of specific labels denoting R-134A, on the nodes and supply lines of the refrigerant of the air conditioner is required to run the system of R-12 refrigerant.

Kia Motor Corp. began to produce some cars equipped with new air conditioners that require the use of refrigerant R-134A. To service the air conditioners to the R-134 special requirements that will be set out below. Refrigerant R-12 and components for it can only be used in systems for R-12 and R-134A refrigerant and components for it can only be used in systems for R-134a.

Determination systems with R-134A and R-12

To determine the type of the air conditioner installed on the specific vehicle, check the main components and piping supplying the refrigerant of the air conditioner. If a system node will have a yellow sticker "R-134a NON-CFC", it is a system with R-134A, requiring the use Refrigerant-134a.


A warning

Air conditioners with R-134a can also be identified by the identification plate and on the O-rings of green and brown colors (HNBR), used in the system.



If the air conditioner have any of these signs, indicating the R-134, the air conditioners may only be used refrigerant R-134a. If the air conditioner is not marked as a system with R-134a, as previously described, it is a system with R-12, requiring the use of R-12 refrigerant.
A warning

Do not add refrigerant R-12 in the air conditioner, which requires the use of refrigerant R-134a.

He add R-134a refrigerant in the air conditioner, which requires the use of R-12 refrigerant.

Never mix two types of these refrigerants. This can result in damage to the air conditioner.


The nodes of the system with R-134a

The basic units of air conditioners with R-134a are similar sites previously used in a system with an R-12. According to the construction and functions of the system units with R-12 and R-134a are similar. Therefore, all operations for removing and installing described for nodes with R-12 can be applied to nodes with R-134a.

Safety measures

PERFORMANCE ORDER
1. Liquid R-134a refrigerant is very volatile. Hit it drop on the skin can cause local freezing. When the refrigerant do not forget to wear gloves.
2. If splashed coolant in your eyes, immediately rinse them with clean water. To protect your eyes, always wear protective glasses or ordinary.
3. The capacity to R-134a is a vessel under high pressure.

Never expose it to intense heat and make sure to store it at a temperature not exceeding 52 ?� C.
4. Often the system checked for leaks using a halide leak detector. Upon contact with the flame of R-134a forms the toxic gas phosgene. Always provide adequate ventilation.




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Basic maintenance of the cooling system

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