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Holman Compair c20 tow behind cuts out
by kevin jones
(lowestoft)
engine cuts out when it gets to air pressure
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I believe that when this tow-behind type air compressor gets to cut out pressure level, the unloader valve interconnects with the throttle, to reduce the engine RPM’s once the pressure is topped up.
If the motor is cutting right out, it could be the throttle valve needs adjusting.
That’s where I would point the mechanic.
Holman 175 mobile compressor
by taonga chidavarume
(bindura ,zimbabwe)
what should be the pressure rating for this machine,what should be done if the machine fails to deliver the rated pressure?
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I have been unable to locate the specifications for the Holman Zitair 175 tow behind air compressor.
You should expect to get around 3-4 CFM of compressed air flow at 90 PSI for each HP of motor size.
In terms of what may be preventing the compressor from reaching its design discharge rate, there are many issues involved, and without specifics as to the symptoms it would be very difficult for anyone to provide guidance.
If anyone has any info on this air compressor for taonga, please post a comment here.
Holman 2301s portable road compressor
by rory
(northern ireland)
hi i have a holman 2301s road compressor..
it is a screw type pump, when you press the boost switch the “air/oil” tank relief valve opens and discharges oil
this valve opens at 8bar, im just wondering should this valve open or is there a pressure regulator which should open before this valve
it seems that the oil and air isn’t separating and the oil level rises… the oil level should be a few inches below the relief valve
Compair Holman fades out and stalls
by: Tommo (UK)
I am running a Compair Holman tow-able compressor of about 250cfm. My normal start procedure is followed where upon the pressure should sit at 100psi on tick over. The fault is now it will reach 100psi and not remain at tick over but fade out and stall.
I do a start procedure 3 times and it finally sits at 100psi but once you operate the dead man switch on the sandblasting hose it picks up in revs as it should but then fades and stalls. I then do the start procedure again and the same happens maybe 3 or 4 times until eventually it runs as it should though some times you can hear the revs fluctuating?
What could be the cause?
Hi
Please can anyone help
My compressor runs for about 10 minutes then when working with the jack hammer gun it starts to blow off oil through the air breather has anyone got any idea what’s wrong please ?
Just a guess – if while it’s operating the engine slows down due to high outlet pressure, you might have a stuck check valve or a bad orifice control on the intake side.
Have you been able to monitor the engine speed and air pressure when this happens?
You really need to get a manual to fix this, or at least someone who knows that machine.
Good luck.
Thank you Doug , that’s how I came across this group because I was trying to somewhere that might provide a manual but I can’t seem to find anywhere
Have you checked with CompAir?
This was clearly made after they acquired Holman, so they should have a manual.
Thank you very much will try and contact them
Hi
Please can anyone help
My compressor runs for about 10 minutes then when working with the jack hammer gun it starts to blow off oil through the air breather has anyone got any idea what’s wrong please ?
(Original language of post is below this version – translated by Google – Moderator) Mrs: Tommo (UK) I have analyzed what you are saying and if after a fourth time the compressor is running I would point out that the compressor had not reached the pressures and temperatures that are necessary before the compressor is released or that one of the elements of said control does not work correctly. Which are? That is detailed in the manual of each model. Please send me a picture of the nameplate so with the correct manual in hand we can analyze together what… Read more »
(Original language of post is below this version – translated by Google – Moderator) Mrs. Rory Regarding your Holman 2301s portable road compressor; your relief valve is no longer useful and must be changed to a new one. Once it is opened it must be changed to a new one. I can send you the corresponding user manual to your compressor if you send me a picture of your compressor’s nameplate. I can answer your questions. Original Post: Mrs. rory Respecto a tu Holman 2301s portable road compressor; tu “relief valve” ya no sirve más y debe ser cambiada por… Read more »
(Original language of post is below this version – translated by Google – Moderator) Mrs. Taonga Chidavarume I can send you the manual of your Holman 175 mobile compressor; I just need you to send me a picture of your compressor’s nameplate. I understand that in the English version. Regarding the fault you indicate, I need to indicate how many meters of hose or pipe you have placed at the outlet of the compressor, so that I can calculate how many minutes you must keep the compressor running, then the compressor filling the hose or pipe and only afterwards can… Read more »
(Original language of post is below this version – translated by Google – Moderator) Hello: Mrs. Kevin Jones The C20 must be at 100% acceleration of the internal combustion engine, for several minutes, before opening the air outlet of the compressor. This is a process that is clearly indicated in the user manual. If you send me a photo with the nameplate of the compressor, I will gladly send you the manual corresponding to your compressor in the language you request. I can answer your questions. Original Post: Hola: Mrs. kevin jones El C20 debe estar al 100% de la… Read more »
(Original language of post is below this version which is translated by Google – Moderator) Hello: Mrs. Kevin Jones The C20 must be at 100% acceleration of the internal combustion engine, for several minutes, before opening the air outlet of the compressor. This is a process that is clearly indicated in the user manual. If you (upload as a comment – moderator) a photo with the nameplate of the compressor, I will gladly send you the manual corresponding to your compressor in the language you request. I can answer your questions. Mrs. Taonga Chidavarume I can send you the manual… Read more »