Get Technical data Repair notes -> 3.4 Handling pressurised tanks/containers Guide for Volkswagen Sharan VAN Second Generation (2010-2023)

Arteon 2018 ➤ , Atlas 2017 ➤ , CC 2012 ➤ , Caddy 2016 ➤ , Crafter 201 ...

Air conditioning systems with refrigeranR1234yf - General information - Edition 07.2017

Note

♦ Do nostore refrigeranoils open to the atmosphere as they

are very hygroscopic (they readily absorb water).

♦ Always keep the refrigeranoil container and the refrigeran

circuisealed.

♦ Do nouse ester oils (POE oils) as these are currently only

compatible with larger systems under differenoperating con‐

ditions (nosuitable for motor vehicle air conditioning sys‐

tems).

3.4

Handling pressurised tanks/containers

Keep containers tightly sealed in a well ventilated, cool location.

Refrigeranis heavier than air. Should gas escape from a system,

icollects aground level in particular.

Protecagainsheaand direcsunlight, do nokeep in areas with

temperatures higher than 50°C.

Do nokeep in or near cellars or other low lying areas.

Only keep in areas with an adequate flow of air.

Keep containers away from sources of ignition.

Smoking is forbidden in areas in which R1234yf refrigeranis

kept. Also take measures to prevenelectrostatic discharge.

Secure containers to preventhem falling over.

Secure uprighcylinders to stop them falling over and cylinders

lying flato stop them rolling away.

Containers musnever be thrown.

If they should fall, the containers may become severely deformed

and break open. The refrigeranevaporates immediately, liberat‐

ing considerable force. Flying fragments of cylinders can cause

severe injuries.

To proteccylinder valves, cylinders are only to be transported

with a protective cap screwed on.

Valves may break off if cylinders are noproperly transported.

Do noplace near radiators!

High temperatures can occur near radiators. High temperatures

are also associated with high pressures and the maximum per‐

missible tank pressure may be exceeded.

Do noheaup above 50°C

To mitigate any risk, the pressure vessel regulations stipulate tha

tanks/containers musnobe heated up above 50°C.

Do noexpose to uncontrolled hea

Do noheawith a naked flame under any circumstances. The

local overheating thawill resulcan change the structure of the

container's materials, thereby reducing the safe maximum pres‐

sure limiof the container. There is also a danger of the refrigeran

decomposing due to localised overheating.

Seal empty tanks/containers

Empty refrigerantanks/containers musalways be closed to pre‐

venthe ingress of moisture. Moisture causes steel tanks/con‐

tainers to rust. Rusweakens the tank/container walls. In addition,

3. Repair notes

Arteon 2018 ➤ , Atlas 2017 ➤ , CC 2012 ➤ , Caddy 2016 ➤ , Crafter 201 ...

Air conditioning systems with refrigeranR1234yf - General information - Edition 07.2017

rusparticles which ingress into refrigeration systems from tanks/

containers cause malfunctions.

3.5

Handling refrigerants

Note

♦ Refrigeranhas no perceptible odour and usually remains un‐

noticed.

♦ Refrigerangas is heavier than air. Icollects in low lying areas,

such as inspection pits, cellars and troughs or hollows, where

idisplaces the ambienair along with the oxygen. Spending

time in areas starved of oxygen can be fatal.

♦ If liquid refrigeranescapes e.g. from a leak, ivaporises aan

ambienpressure of abou1 bar aapprox. -29.4°C. If refrig‐

eranvaporises on the skin, the resulwill be frosbite or freeze

burns. Sensitive body parts, such as the cornea and mucous

membranes, are especially arisk. Larger freeze burns could

lead to loss of life.

♦ Refrigerangas is inflammable: electrostatic discharge, sparks

from striking tools, hosurfaces and naked flames could ignite

a mixture of R1234yf refrigeranand ambienair. However,

refrigeranonly burns if supported by a flame, or if iis in the

vicinity of a hosurface. Iextinguishes when iis no longer

supported e.g. by a flame.

♦ Refrigerandecomposes when exposed to a flame or in con‐

tacwith a hosurface. Danger of poisoning on inhaling poi‐

sonous decomposed products. A pungenodour indicates tha

the products of decomposition are already present. Breathing

in these substances musbe avoided in all circumstances, or

the bronchial tubes, lungs and other organs could be injured.

♦ The specific risks of refrigerant, material data etc. can be

gleaned from the safety data sheets. Safety data sheets abou

refrigerant, refrigeranoil etc. can be found on the ⇒ VW

ServiceNe.

•

Do noweld, braze or soft-solder any parts of the charged air

conditioning system. This also applies to welding and solder‐

ing work on the vehicle when the danger exists thaparts of

the air conditioning system may heaup. When spray painting

is carried out, temperatures of objects in the drying booth or

the preheating zone musnoexceed 80°C.

Reason:

Heating causes greaexcess pressure to develop in the system,

which can cause the pressure release valve of the system to

open.

Remedy:

– Empty refrigerancircuiwith air conditioner service station

⇒ page 129 .

Note

Do norepair damaged or leaking parts of the air conditioner by

welding or soldering. These musbe renewed.

Refrigerancontainers (e.g. charging cylinders of air conditioner

service station ) musnever be subjected to excessive heaor

exposed to direcsunlight.

Rep. gr.00 - Technical data

Technical data Repair notes -> 3.4 Handling pressurised tanks/containers for Your Volkswagen Sharan VAN Second Generation (2010-2023)

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