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With all the feedback what i have done initially is turn on the DA pump earlier than the water solenoid to see if i can change the results. Bingo it does seem to have made a difference although its been raining ever since so bugger all cars have been washed. Can you guys confirm if you normally...

yes i have swapped the pump with another one. It's sounding a lot like i have a problem with dosing of product and perhaps switching to a hydrominder could be worthwhile. You would wonder why a manufacturer of many years would supply something which is inferior to a hydrominder and it sounds...

No our process applies the low PH in all circumstances. We have tested the PH on the car and it is very close to neutral. The last time it was done the reading was 7.1 Because we seem to get poor water break at the front section of the hood and after that it improves, I'm suspicious we're not...

Thanks JM Mustang i don't have this chart, i was relying on the chemical rep to set this up correctly. I believe we were using approx 15ml per car, which according to this info is very high. Given what has already been said, too much product can be as bad as not enough. thank you, it gives me...

Yes we have titrated the Velocity at the arch which tested ok, but the other chemical suppliers do not have any titration details for their product so they have been set up using volumetrics. Does anyone know if there is a titration process for Lustra 405 Pearl Black and Turtle Wax Blaze n...

Mr. Aap Of all the drying agents we've tried we have only had specs on how to titrate the Blue Coral Velocity. The others have been set up by volumetrics.

Just Clean yes sorry i did reply to this in my earlier comments. We have replaced the foot valve and checked same. Our recycle system is plumbed in a way that reclaim supply to the system is isolated by a separate manual valve. We have also run on total fresh water for everything and there is no...

Many thanks for all the input. It would seem that other than rusty turbine blades causing carnage, general view is that they should not be the cause of erratic or poor drying issues. We do not use RO reject water at all. Our fresh water supply is tested weekly for TDS and hardness. Our distance...

Thanks to all for your input. I'll try to respond to all suggestions in one reply. Our chemical dosing method is by Blue White Noir metering pumps. One thing i have noticed is that the DA does not seem to be showing beading at the early part of the hood and i really only see beading towards the...

I’m trying to rectify problems with our drying. This is a problem which has gradually deteriorated and I have been trying to fix for over 12 months. This is quite a long story, so please be prepared for a fairly long epitaph. We run a 110ft Macneil tunnel in Australia using 90hp of blowers and...

Wash it, you raise a good point. We don't prep with high pressure but do apply a high PH bug remover to bird droppings, tree residue etc. It is possible some staff could have hand rubbed some of these marks after applying the chemical, however the vehicles we have seen which are worst have swirl...

Thanks all, I understand they might not accept my explanation but I do feel responsible to at least be able to explain with confidence as to why this has occurred. If they don't want to accept that then i know I've done all I can to explain. This forum has enabled me to develop a suitable...

Thank you everyone. I think I have enough information from this to create a suitable response for customers. Bill I most definitely don't agree with your bad luck, not me,I don't care attitude. I don't think this does a business or the industry any good. The purpose of starting this thread was...

OK so I've read all the detailed explanations about swirls or spider webs. Can I deduce from all of this that it is most likely our presoak has removed the disguising wax? If yes, this paints our industry into a bit of a black hole. Owners say, when I wash at home they weren't there. I agree...

Earl, you are correct, I understand the brushes are not the cause of the swirl marks but what I'm trying to understand is what part of our wash process reveals the existing swirl marks. The BMW I noticed last week I could see the swirls as the vehicle entered the tunnel. I knew they were not...

Thanks guys for this interaction. Vehicles I've currently identified the problem with are a mix of local and imported cars. I know they all have clear coat. A bit more detail on the wash process. We have a warm climate so the first stage of the wash is a cool down rinse. We then apply the...

I have a 6 month old conveyerised wash in Australia. We use Macneil equipment using the Envirosoft foam. We have infrequent issues with customers complaining the car wash has caused paint swirl marks on their duco. Not surprisingly, every instance of this is black paint. The nature of the swirl...

Thanks for the reply. Regarding our program, the HMI version is 2.37 and the PLC is 2.38 If there is a modification for the boom I assume it would have to be eyes which would protrude forward of the boom but sit below the boom home position when up to be of any benefit. Do you know what it looks...

I'm an operator in Australia who has viewed this forum for a long time and finally decided I have something to contribute. I have a WW 2.0 where the boom came down at rear of vehicle, stayed down and then the gantry moved forward, bending the boom and wiping out the rear end of the vehicle $2000...