Background Image
Table of Contents Table of Contents
Previous Page  810 / 1525 Next Page
Information
Show Menu
Previous Page 810 / 1525 Next Page
Page Background

30

AIRCONDITIONING

REFRIGERANT (R 134a )

(Tetraflouroethane, CF3-CH2F)

R134a refrigerant has been filled in the airconditioning

system for this vehicle.

It is a hydroflurocarbon (HFC) which has no ozone

destructive potential and its global warming potential

is very much lower than that of R 12 refrigerant.

Form ...................................... Gas.

COLOUR................................. Colourless.

Smell ..................................... Slightly of ether.

Crystallisation temperature ..... -117

0

C.

Boiling temperature ................. -26

0

C.

Safety Precautions:

It is a safe refrigerant, i.e. non-flammable, non

explosive, non-irritating and without smell. The

following precautions should to be taken while handling

this refrigerant:

* Avoid any form of contact with liquid refrigerant.

Wear safety glasses for eye protection. In case

refrigerant gets into your eyes, immediately seek

medical help. Do not rub.

* In the event of work involving the refrigerant circuit,

refrigerant must not escape into the atmosphere.

* Suitable suction extraction system or reprocessing

systems are to be used.

* Refrigerant must not be released in confined

spaces. As it is heavier than air, the danger of

asphyxiation exists in any assembly pits in the

area.

* Under no circumstances may parts of the system

be cleaned from inside with superheated steam or

compressed air. Only use nitrogen for cleaning.

* Refrigerant is completely non - toxic at normal

temperatures, however it decomposes upon

contact with flames or higher temperatures, to form

hydrogen chloride and hydrogen fluoride. These

products of decomposition are hazardous to health.

Therefore, under no circumstances, should welding

be carried out on the closed system or in its close

proximity.

Ozone destructive potential

Global warming potential

l

Relative potential

* Switch off the system if a part of the air -

conditioner system is damaged or leaking, due to

some reason for example, a vehicle accident.

This is to avoid damage to the compressor running

in the absence of refrigerant in the circuit.

Fig. 41