Desert_ Diver
New
A buddy of mine from San Diego came by today and dropped off this compressor. He said it was sitting in a friend of the family's storage locker for about 20 to 25 years. He plugged it in and it knocked quite a bit.
He asked if I wanted it, knowing I already have a scuba compressor and have worked on them before. He thought maybe I can fix it. So, I'm not sure if anything's really wrong with it. I started it up and it did knock, but I plugged it immediately. It did sound like my Coltri compressor when it starts. It knocks a bit until the third stage piston gets some back pressure on it and then the knocking stops which only takes a second or two. I was told the knock is due to a third stage floating piston.
I watched a video on YouTube where somebody had a Utilis 10 with a gas motor. They started it up and it made that same knock (I tried the separate the engine noise from the compressor but it is a little hard to do) for probably 15 seconds or so I'm thinking again it's the third stage piston and it maybe a free floating piston, and it's knocking because it doesn't have any back pressure on it.
There is no data plate. There is no model number stamped on it. Just a date on the coalescer unit. What I've seen in the pictures it looks like it could be either a Varius V2B or Utilus 10. The unit has no real signs of being used much, it looks like it was very well taken care of.
Any help would be appreciated.
He asked if I wanted it, knowing I already have a scuba compressor and have worked on them before. He thought maybe I can fix it. So, I'm not sure if anything's really wrong with it. I started it up and it did knock, but I plugged it immediately. It did sound like my Coltri compressor when it starts. It knocks a bit until the third stage piston gets some back pressure on it and then the knocking stops which only takes a second or two. I was told the knock is due to a third stage floating piston.
I watched a video on YouTube where somebody had a Utilis 10 with a gas motor. They started it up and it made that same knock (I tried the separate the engine noise from the compressor but it is a little hard to do) for probably 15 seconds or so I'm thinking again it's the third stage piston and it maybe a free floating piston, and it's knocking because it doesn't have any back pressure on it.
There is no data plate. There is no model number stamped on it. Just a date on the coalescer unit. What I've seen in the pictures it looks like it could be either a Varius V2B or Utilus 10. The unit has no real signs of being used much, it looks like it was very well taken care of.
Any help would be appreciated.