air compressor wiring help required

[Marvo]

The more I read this thread the more skittish I get. You still need a commercial/industrial electrician that knows what he's doing. If you wire this up wrong ie one of the remote switches doesn't function then firstly someone could get injured and secondly anything could happen. If the pressure switch isn't functioning you could damage the compressor head or even worse rupture the tank if there's a safety release not working. If the E-stop isn't correctly wired you could end up in court if someone gets injured.

This type of machinery really needs connecting correctly, all the functions both electrical and mechanical need thorough testing and it needs to go through a commissioning procedure to set it up.

I'd say if you just switch this on without going through this process then you're being reckless and negligent and possibly endangering yourself and other people. Please persevere and find a capable electrician.

 

[telectrix]

or you could sell tickets for the switch on ceremony. :earmuffs:

 

[Darkwood]

With the time lost doing your job here you could have bought a new compressor and had it fitted by their own supplied engineers ... no-one on here is going to say i think its sounds right just because cables reach and assumptions are made, you need someone that understands the compressor set-up as well as how a star-delta operates.... these industrial electricians you have encountered are no more than glorified domestic sparks ... thats why i stipulated Electrical Engineer as he will be more akin to the operational side of things and won't walk off at the first hurdle.

A competent Industrial Electrician would not have any problem with this job and even if he hadn't done such a set-up before he would have the intellect to work it out even without any wiring breakdown.... Its a standard Star/Delta starter and you need to integrate the compressor controls into it it so once you hit start it is auto-mated and when you hit stop it won't allow the pressure switch to auto-start it again.

It seems you live in a county of numpty industrial sparkies...

 

[Lucien Nunes]

A competent Industrial Electrician would not have any problem with this job

Agreed 100%. It's bog standard, but there are also 87 bog standard ways it can go wrong if you put the wires in the wrong holes by not fully understanding the method of operation. I agree that it is often possible to reverse modifications by looking at what 'seems' to fit where, but it's not reliable enough to ensure safety in this case.

 

[netblindpaul]

OP I can do this for you on Sunday & get the electrics working, I can quote you a fixed price plus materials, HOWEVER, the materials will have to be same day couriered to site on Sunday, I guess that you will not like the price though.
This price will exclude any issues with the compressor or the supply circuits.
Noting also that the pics & information that you have supplied to date, indicate that the existing equipment will currently not meet PUWER98 requirements (statute law) for use in a business.
IF you are interested you are looking at circa £3k, plus VAT, payable in advance, plus materials, the invoice for which will be payable in full immediately upon presentation of invoice, please let me know.
Oh, & yes I do expect to be able to get the materials to site on Sunday, but the cost will be yours to bear.
However, as long as the required materials are available, the supply circuit is suitable and the compressor on the end of the control is OK, you will have a working compressor Monday morning.
Now it is only you that can weigh up your requirements, and the loss to your business, however, I know that more than a week of no income, which is what you are suggesting can cripple many businesses.

 

[silva.foxx]

At that price, you'll certainly be undercut by those Chuckle Brothers on the job at the moment.

 

[netblindpaul]

Yes Silva, but, it will be working & compliant on Monday morning, if the rest of it is OK & the materials can be delivered!
At the moment, 2 of them at least have tried & failed!
FFS it's just a basic control system!!!

 

[Brightspark2]

OP I can do this for you on Sunday & get the electrics working, I can quote you a fixed price plus materials, HOWEVER, the materials will have to be same day couriered to site on Sunday, I guess that you will not like the price though.
This price will exclude any issues with the compressor or the supply circuits.
Noting also that the pics & information that you have supplied to date, indicate that the existing equipment will currently not meet PUWER98 requirements (statute law) for use in a business.
IF you are interested you are looking at circa £3k, plus VAT, payable in advance, plus materials, the invoice for which will be payable in full immediately upon presentation of invoice, please let me know.
Oh, & yes I do expect to be able to get the materials to site on Sunday, but the cost will be yours to bear.
However, as long as the required materials are available, the supply circuit is suitable and the compressor on the end of the control is OK, you will have a working compressor Monday morning.
Now it is only you that can weigh up your requirements, and the loss to your business, however, I know that more than a week of no income, which is what you are suggesting can cripple many businesses.

I think he'll jump at the chance...






















Or maybe not...

 

[netblindpaul]

His choice, if he has more than 2 people working for him then the cost will be less than 2 wks turnover for an efficient & profitable business.

I'm not bothered, either way, I can fix it if he wants, or I can spend Sunday @ home with the family.

 

[Darkwood]

Either way NBP ill enjoy my sunday lunch )

 

[Knobhead]

Sunday lunch at the Peacock sounds good to me.

 

[Knobhead]

FFS it's just a basic control system!!!

You said it!

Come on Paul, even at my normal (dragged out of retirement) rate even I couldn’t justify that price.

If the OP is willing to drive me to the job and back we’ll come to a reasonable price. Sorry but due to my health I can’t drive now.

It will be to standard.

 

[netblindpaul]

It's a Sunday Tony, so that's double time, it would have been a 16 hour day, possibly longer from here, plus the mileage @ around a 400 mile round trip, that's £200, & the travel time, it would have meant my not enjoying fully my daughters 19th birthday with one of them home from Uni for the celebration on tomorrow night.
Plus, it could have turned into an overnight stay if I was too tired to come back, which would have messed up the work for Monday.
So, looking at that then the costs are approaching reasonable IMHO.
It's out now anyway, I'm booked for a small job Sunday, & we have plans for later.
Then there is the VAT on top, I'm not sure if the OP is a business running a bodyshop, or a private individual with a spray booth, B2B, it is generally accepted that the price is Ex-VAT, but to the general public, the price must be including, which that was.
You need to remember that I was offering to design, build & install a fully PUWER98 compliant control system if needed, in a day, on a Sunday.

Not sure what your rates are Tony, but I know mine are very high compared with those bandied around the forum here, up to triple what I have seen people say that they are charging, & I don't have enough hours in the day to do the work that I am getting.

TBH, I don't think I am that far out, remembering that I was guaranteeing a fix, & a compliant fix also!

Too late now anyway, sorry, got things planned, last night we had nothing planned, & I could have swung it.

 

[i=p/u]

I went to fix a compressor one time . Boss had to send someone else next day lol . I changed the starter not of same type and apparently the start button was cancelling out the pressure valve, so the fix was to not use the stop start on the starter and and add isolator ... If makes sense . So was more less used as a contactor.

 

[Darkwood]

I went to fix a compressor one time . Boss had to send someone else next day lol . I changed the starter not of same type and apparently the start button was cancelling out the pressure valve, so the fix was to not use the stop start on the starter and and add isolator ... If makes sense . So was more less used as a contactor.

Oophs!.... hope you blanked off the redundant buttons to be compliant