New ARB compressor - bloody hot!

Submitted: Sunday, Mar 09, 2008 at 12:02
ThreadID: 55356 Views:2875 Replies:7 FollowUps:3
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Picked up my new ARB compressor yesterday - the new style one in a portable case. I'd just had my tyres balanced that morning, so decided to go around the vehicle and bum all the tyres plus two spares back up to 40psi (tyre place only does them to 29psi as per placard). After pumping all four tyres, I went to use the quick disconnect to remove the hose from the compressor - I was expecting it to be warm, but it was ridiculously hot! Ended up with a small blister on a finger. I removed the fitting with a rag, and the old spit test showed it was above boiling point!

Can anyone else with this compressor confirm if this is normal? 6 tyres from 29psi to 40psi.

The compressor itself is a dream to use compared to my other compressor, a Bushranger MaxiAir knockoff from eBay (not a genuine one). I really like the clip-on filler that doesn't need to be screwed onto the valve, and the auto-cutout so you don't need to manually flick the compressor on/off before disconnecting. Both features are time savers on top of the flow rate.
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Reply By: normglenda - Sunday, Mar 09, 2008 at 12:11

Sunday, Mar 09, 2008 at 12:11
Scub
I have an ARB as well ,same as yours in the case. Yes it gets bloody hot. When I run it without the motor going, bloody hot. With the motor going takes a little longer to get bloody hot.

I had the same thoughts as you when i got mine, but it appears normal. I have had mine near 2 years and used it a bit in all areas, still going well.
Norm
AnswerID: 291754

Reply By: Member - Alan H (Narangba QLD - Sunday, Mar 09, 2008 at 13:07

Sunday, Mar 09, 2008 at 13:07
Normal - Boyles Law

If you increase pressure you increase temperature

Likewise if you suddenly release compressed air you get cooling.

The suddeness of the temp increase is sort of efficency test as the compressor must be applying plenty of pressure.

I've had a Big Red for many years and it gets too hot to touch almost straight away. Enjoy your new compressor.
AnswerID: 291764

Follow Up By: Richard Kovac - Sunday, Mar 09, 2008 at 17:03

Sunday, Mar 09, 2008 at 17:03
It's actually Charles' Law... :-)
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Follow Up By: Gone Bush (WA) - Monday, Mar 10, 2008 at 10:05

Monday, Mar 10, 2008 at 10:05
Is that Lance Boyle?

My Maxair 2 has a rubber surround over the hot metal connection. It's the thing that made me choose the Maxair over the ARB. Otherwise I think they are fairly well the same.
Although the Maxair connector that goes over the valve is a bit fiddly.

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Reply By: Bonz (Vic) - Sunday, Mar 09, 2008 at 13:23

Sunday, Mar 09, 2008 at 13:23
my OLD ARB one gets how enough to fry an egg
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AnswerID: 291765

Reply By: Patrolman Pat - Sunday, Mar 09, 2008 at 14:24

Sunday, Mar 09, 2008 at 14:24
I'm wondering why the tyre fitter lets the tyres down to do a balance, can't recall seeing that done before.
AnswerID: 291774

Follow Up By: Scubaroo - Sunday, Mar 09, 2008 at 15:03

Sunday, Mar 09, 2008 at 15:03
Come to think of it I think the tyres were still at about 30psi from the weekend before when I'd dropped them to about 22psi for a 4WD course, and was in a hurry to get them back up to a usable road pressure to drive home!

Thanks to public transport I generally don't drive during the week anymore so it had been sitting 5 days without being driven until Sat morning. I had a new tyre fitted to a spare rim and used the opportunity to get a rotate & balance done. I picked the compressor up on the way home afterwards, hence had a bunch of tyres needing pumping up.
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Reply By: mowing - Sunday, Mar 09, 2008 at 15:05

Sunday, Mar 09, 2008 at 15:05
I have the same compressor and it does get hot at the join. I also have a Terrain Tamer compressor and this gets very very hot at the join but on the plus side they both pump out really well. I guess it is a case of the more air the hotter it gets.......

Regards

Mark
AnswerID: 291781

Reply By: Richard Kovac - Sunday, Mar 09, 2008 at 17:04

Sunday, Mar 09, 2008 at 17:04
Yes and I did the same stupid thing, you need to read the instruction first.. LOL

Richard
AnswerID: 291789

Reply By: Member - Troll 81 (QLD) - Monday, Mar 10, 2008 at 10:17

Monday, Mar 10, 2008 at 10:17
Yip normal my old one does the same....only takes about 2-3 min then it's very hot
AnswerID: 291886

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