jun air minor hesitant start up

by mike
(manchester, uk)

Hi there,


Ever since owning this compressor its always had a lumpy start.
it builds pressure fine, but in start up its coughs and splutters.
i switch on, it plutters and the green light goes out. It buzzes a bit then starts again spluttering, the green light goes out again. Usually runs fine after a couple of attempts. It re fills back up fine, its just the initial start up thats the problem. Can you help please?
thank you
Mike

Comments for jun air minor hesitant start up

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Feb 06, 2015
capacitor
by: mike

Thanks Bill

That was my thinking also.

Thanks for the advice

Cheers, Mike

Feb 06, 2015
Cap change out
by: Bill

You may want to get someone to do it for you then, as playing with electricity is always fraught with danger, and I believe you are using 240 VAC as power and that's really dangerous.

As to advice, as noted earlier: Make sure the new cap has the same micro-farad rating as the old, and the same voltage range.

In your shoes I'd probably take the motor and cap to a repair depot and have them do it for me.

B.

Feb 06, 2015
capacitor
by: mike

Hi Bill

I appreciate that.....its just that i dont have much electrical experience or knowhow and im concerned about health and safety.

If you have any tips on installing the cap it would be apprecated

Cheers
mike

Feb 06, 2015
Capacitor lead
by: Bill

It was a somewhat tongue in cheek comment.

The capacitor is a fast discharge battery, and if it's got a charge in it and you touch the lead and are grounded you will get quite a jolt.

B.

Feb 06, 2015
capacitor
by: mike

Thanks Bill

Touching the wrong lead? The cap i have has a brown and blue leads from it.

Cheers
mike

Feb 05, 2015
Do it yourself capacitor change
by: Bill

Sure, you can do it yourself, as long as you don't fry yourself by touching the wrong lead.

Make sure the new cap has the same micro-farad rating as the old, and the same voltage range.

Bill

Feb 05, 2015
start capacitor
by: mike

I have replaced the pressure switch which didnt solve the issue. I have bought a new start capacitor now. Is it safe to fit myself? I have removed the old one.
thanks
mike

Jan 18, 2015
Photo
by: Bill

Sure, but the software won't allow it right here.

Start a new thread, make the header the same as this one, and add the photo.

If I can connect the dots, I'll move the photo over to this thread.

Bill

Jan 18, 2015
jun air start up
by: mike

Thanks Bill

Is it possible i can upload a photo of the burnt switch?

Thanks
Mike

Jan 18, 2015
cap
by: mike

Thanks, i do have a cap, i thought it could be that. Time for repair i think
Mike

Jan 17, 2015
start-up
by: Doug in s.d.ca

( I'm not sure if you even have a cap, but still...)


I agree with Bill, but I think you might also have a bad start cap. Their effectiveness can weaken when not used for a time, and be "revived" after some short period of use.

If that's the case, you'll want to get the cap fixed (replaced) at the same time you change the pressure switch.

Jan 17, 2015
Contacts
by: Bill

That certainly suggests you've got some contact issues.

A new pressure switch wouldn't hurt, I would think.

Bill

Jan 17, 2015
reply
by: mike

Thanks Bill

I have taken the cover off the pressure switch and noticed some brown burn marks on the plasic inside.
i wonder if this signifies a problem

Jan 17, 2015
Jun air sputters
by: Bill

If it only happens on the initial, cold start up, I'd be checking the pressure switch for contacts.

It sounds as though there is an intermittent contact when it's cold, but when it warms up, the contact is established more strongly.

A place to start, at least.

Bill

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