Used Hydrovane 23 will not run needle gun properly
by John Turner
Hydrovane 23 air comrpessor
I bought a used Hydrovane 23 a few weeks ago which has only 900 hours on the clock. I bought genuine filters and oil etc and gave it an oil/filter change before using as it had not been used much, I had been told it was a stand-by machine hence the low hours. It makes good air and seemed to be fine when using it for a short period.
Today however I decided to use a needle gun and it ran well for around 7 or 8 minutes then the pressure seemed to get less until the needle gun stopped working. At this point there was still full pressure showing at the gauge, but it seemed to be limited at the outlet end of the pipes.
The temperature was just above freezing so I wondered if some of the pipework had possibly frozen. I stripped the pipes at the compressor and they were a little gunged up (rusty inside), but not enough to stop the airflow, so I removed the pipes and cleaned them out. I replaced the pipes and started the compressor again, everything ran fine for around 5 minutes, then the same fault appeared. I now am unsure if it is a cold related problem (pipework frozen) or a heat related problem ( compressor component not functioning properly when hot.
The output of the Hydrovane 23 is around 21cfm, the needle gun is around 6 or 7 cfm.
Any help on this matter would be appreciated.
John, do you have a compressed air filter in line? If not, you should. If you do, dump the air and check the element for plugging. That's what your problem sounds like to me.