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Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017
Risk of freezing injury from refrigerant
When working on the air conditioning system, there is a risk of
highly pressurised refrigerant escaping from the system. There is
a risk of injury to the skin and parts of the body due to freezing.
– Wear protective gloves.
– Wear protective goggles.
– Extract refrigerant and open the refrigerant circuit immediately
afterwards.
– If more than 10 minutes have passed since the refrigerant was
extracted, repeat the extraction process before opening the
refrigerant circuit. Pressure could build up in the refrigerant
circuit from continued evaporation.
1.3
Safety measures when working on vehicles with a start/stop system
Risk of injury due to unexpected motor start
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If the vehicle’s start/stop system is activated, the engine can start
unexpectedly. A message in the dash panel insert indicates
whether the start/stop system is activated.
– Deactivate start/stop system by switching off the ignition.
1.4
Safety measures when using air condi‐
tioner service stations
•
•
Before connecting the charging system to the air conditioner,
make sure that all existing shut-off valves are closed.
Before the air conditioner service station is decoupled from the
air conditioning system, ensure that the process is complete.
This will prevent any more refrigerant than necessary and
technically unavoidable from entering the atmosphere.
•
Once the purified refrigerant from the air conditioner service
station /extraction system has been filled into an external com‐
pressed-gas cylinder, close the hand shut-off valves at the
cylinder and charging system.
•
•
•
Do not expose the air conditioner service station , extracting
and charging system to moisture and do not use in a damp
environment.
Before performing any maintenance work on the air condition‐
er service station , disconnect the extracting and charging
system from the power supply.
To reduce the risk of fire, avoid using an extension cable. If
the use an extension cable is unavoidable, use an extension
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cable with a cross-section of at least 2.5 mm .
•
•
In case of fire, remove external cylinder.
If oil is drawn out of the air conditioning system by the suction
accumulator of the air conditioner service station and emptied
into the supplied measuring beaker, ensure that it is poured
into a sealable container afterwards as the oil could contain a
small amount of refrigerant. Refrigerant must not be released
into the environment.
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Rep. gr.00 - Technical data
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