10 March 2010
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If you are and independent auto aircon engineer or insataller then your potential customers are probably visiting this site too! To make these customers in your area your future clients. Contact us for details of how to have an exclusive listing in your area on our service provider’s pages. Email now to directory@caraircon.co.uk |
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Having problems getting a presence on the internet? - A website can be costly to design and maintain. We can provide a complete service for you at a very reasonable cost - We can supply a complete package including Domain name, Design and layout, uploading and web hosting for a 4/5 page website for around £350. - all you have to do is tell us what you want on it and email any pictures.....changes can be made almost instantly - just email the changes to our web team. Looking for that elusive snappy Domain name for your website? - we have some for sale all ready for immediate transfer. They can be used to link directly to an existing website or used as stand alone addresses- Once purchased they are yours for life, just like a vehicle registration - Email tech@caraircon.co.uk for details. |
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NEW Refrigerants are in the latter stages of development for vehicle a/c systems. HFO (hydrofluoro-oleofins) are a near ‘drop in’ replacement for 134a, with no ozone depleting properties and a global warming potential of only 4, but with similar refrigerant properties. There are still issues to be addressed, because the gas breaks down fairly easily in the atmosphere it is more flammable than current refrigerants, though less than gasoline. The more pressing issue is its long-term chemical stability within the system. Still probably a better bet than dealing with the pressures required to operate a CO2 system - lets hope they give it a more snappy title than the current one - HFO-1234yf Watch this space for future developments or check out http://www51.honeywell.com/sm/genetron/prod-apps/refrigeration/hfo-1234yf.html?c=24 |
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EXPLODING VEHICLE A/C SYSTEMS. There have been several unsubstantiated stories circulating recently about explosions after service work on vehicle a/c systems. It seems that a small proportion of R134a when mixed with atmospheric air will become potentially explosive if compressed. The only way this could occur is if the system is tested with compressed workshop air and then allowed to run. The compressor would not run if the system was below the threshold of the low pressure switch, This is obviously not normal service procedure to any trained a/c engineer, the system should only be leak tested with Oxy free nitrogen, leaks cured, then thoroughly vaccumed before refilling. As long as you follow the normal procedures you should not fall foul of this one....... Sounds to me like someone who is not qualified has been playing around with things they don’t understand..... |
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Considered using Radweld to cure those slow leaks? - So have we - We have so far rejected these because of the potential to block the system - Perhaps it is time to review the situation. Though the ones we have reviewed require flushing of the system and replacement of the receiver drier which reduces the advantages. For a definitive independent view of what is going on in the American market check out: http://www.coolprofits.com/articles/aircondition/ac_sealants_p1.htm |
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Many manufacturers have recently included the receiver/drier in the condenser unit. These are installed via a cap with ‘o’ rings which are traps for water which lays in the top corroding the seals. Usually degassing, removing the cap and cleaning/replacing the seals and grooves solves this problem. We also keep a couple of Mercedes high side charging ports which are prone to leak due to a similar problem. Don’t forget some of the caps have to be pushed in slightly to free the circlip. |
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For useful info on all aspects of Auto A/C check out http://www.acresource.co.uk |
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Got any tips or funnies? e-mail them to bob@caraircon.co.uk and we’ll share them here...... |
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