Avoid compressor corrosion with WAECO professional oil and UV additive systems

Don’t allow potential corrosion in compressor systems by adding moisture, company warns

Avoid compressor corrosion with WAECO professional oil and UV additive systems
Waeco's professional oil system for humidity-free storage.

The thermo-chemical stability of the refrigerant/oil blend is critical for the reliability of the air conditioning system and it is at risk if moisture is present, Dometic warns.

A Dometic spokesperson said: “PAG oils quickly absorb moisture, this is even more of a problem now as R 1234yf systems are much more sensitive than older R 134a ones.

“If refrigerant, oil and water react with one another, this can lead to the formation of acids or slurries which might damage the A/C system circuit, e.g. corrosion of the compressor.

“What is more, the increased humidity can impair the lubricating properties of the oil.

“This, in turn, reduces the lifetime of the A/C components.”

The company says insufficient lubrication is the second most common cause of compressor damage.

The results are the breakdown of the air conditioning system, costly repairs or time-consuming processing of complaints.

When it comes to the maintenance and repair of vehicle A/C systems, it recommends to use a high-quality, chemically and thermally stable double end capped oil, stored in an effectively vapour-tight container and injected into the A/C system without getting in contact with the ambient air.

The spokesperson added: “A test conducted by an independent institute proved that PAG oil in non-vapour-tight containers quickly absorb moisture.

“Five used oil containers of various service equipment manufacturers and an open glass vessel as a neutral reference were tested.

“After three days the amount of moisture was already above the warning value in four out of five containers.

“Only the oil in the steam-tight WAECO used oil container remained below the warning value.”

By using the new professional oil system with 150 ml cans as well as the matching adapters, the most commonly used third-party service units can
now also be equipped with the humidity-free storage system.

This is an effective method to keep moisture out of the A/C system and prevent subsequent damage and customer complaints.

For more information, select the ‘more details’ link.

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