|
|
|
![]() |
|
|||||||
|
||||||||
![]() |
| Thread Tools | Rate Thread | Display Modes |
|
#1
|
||||
|
||||
|
Viair 90 series compressor
I have seen a lot of threads this season about the 90 series compressors. Since the GDC is saying that they will not answer questions about specific components, I figured I would see if anyone here have more information about their legality.
The part that I am questionable about is that the maximum working pressure is only 120 PSI. R66 states that all pneumatic components must have a working pressure of at least 125psi. Does this mean we can not use these compressors? Viair 92 specs 12-Volt Permanent Magnetic Motor Duty Cycle: 9% @ 100 PSI Max. Working Pressure: 120 PSI Amp Draw: 10 Amps Inlet Filter Assembly Included Inline Check Valve Dimensions: 7.50" L x 2.10" W x 4.30" H Net Weight: 2.50 lbs. Quote:
|
|
#2
|
||||
|
||||
|
Re: Viair 90 series compressor
IMHO, yes, it would not be legal.
|
|
#3
|
||||
|
||||
|
Re: Viair 90 series compressor
I just found a conflict in the rules. R66 says a working pressure of 125 while R69 says a working pressure of 120psi. I will have to post in the Q & A about this.
Quote:
|
|
#4
|
||||
|
||||
|
Re: Viair 90 series compressor
But the 90C, which is provided in rookie kits, has the same exact specs as the 92C. The only difference is the addition of an air filter assembly.
|
|
#5
|
|||
|
|||
|
I can see why you question this rule. Look at the system as supply and load. On the supply side is the compressor should not exceed 125 psi. All components on the load side of the system must be rated for at least 125 psi, and the pneumatic lines cannot exceed a certain inside diameter. This guards against over pressurizing the system that can cause burst of a component. I believe you are right in questioning "least" being used for the compressor. I think you should ask the question, quote the rule and emphasize the word "least".
Does this rule mean that we can use a compressor that exceeds 125 psi? I don't believe this is their intent, and the main regulator will keep the system below the max pressure. But think what happens if that regulator fails, and the compressor produces higher pressures than the components can handle. Nice catch! ![]() |
|
#6
|
|||||
|
|||||
|
Re: Viair 90 series compressor
Max intermittent pressure rating for the 90 series is 200psi.
120 psi maximum is what our robots are restricted to (by our properly set main regulator). 125 psi or greater is what the individual components have to be minimum rated for so we're sure they don't burst. Our safety pressure relief valve vents excess pressure above 125psi. The old compressors can exceed 125psi too. Last edited by Mark McLeod : 17-02-2011 at 08:53. |
|
#7
|
||||
|
||||
|
Re: Viair 90 series compressor
Quote:
Quote:
|
|
#8
|
||||
|
||||
|
Re: Viair 90 series compressor
Quote:
I agree that, from an engineer's and mentor's perspective, it should be legal but, in order to get a uniform ruling by all inspectors at all events, someone needs to ask the GDC if a max intermittent pressure rating is sufficient to qualify under <R66> (working pressure of at least 125psi)... Regards, Mike |
|
#9
|
||||
|
||||
|
Re: Viair 90 series compressor
The GDC ruling was that a compressor of identical specs may be used in place of the 090C, since the 092C and 095C only differ in their use of an external filter or a different bracket they are fine. If you are worried about passing inspection go to Viar's website and do a screen print of the spec page for the 090C and the the one you are using.
|
|
#10
|
|||||
|
|||||
|
Re: Viair 90 series compressor
Here's the rule that applies.
Quote:
|
|
#11
|
||||
|
||||
|
Re: Viair 90 series compressor
Here is the page for the KOP 090C compressor
http://www.viaircorp.com/OnRoad/90C.html The 092C http://www.viaircorp.com/OnRoad/92C.html And the 095C http://www.viaircorp.com/OnRoad/95C.html |
|
#12
|
||||
|
||||
|
Re: Viair 90 series compressor
The problem I have now is that technically, neither the 90C or 92C compressors actually are in compliance with R66.
Quote:
|
![]() |
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|