-
For my education
Awoke this morning with no pressure in my auxiliary system. No pocket doors, no bed lifts, and most importantly, no dump valves.
After some searching, I discovered my auxiliary compressor had come unplugged. That is another story.
Can someone educate me as to what the numbered items are in these photos from the pneumatic system in my coach?
The grey box (3) has a switch for auto/off. It appears to be located between the compressor and a distribution manifold. While the compressor was off, there was an audible buzz coming from the box. Pressure switch?
-
8 Replies
-
On my older Liberty:
#1 is water trap for aux compressor air. Mine came with only one, I added a second.
#2 is a Versa brand 120v normally closed aux air solenoid valve
#3 is a Pumptrol brand 120v pressure switch. Mine is adjustable, take the cover off, I have mine adjusted to turn on the aux compressor when pressure drops to < 50 psi , and it shuts it off at about 70 psi. -
Here is a pic of mine
-
What Don said.
I would almost bet your water trap isn’t working and if your aux compressor runs at all it is putting moisture in the accessory system.
Replace it with new or get rid of it and install something that will have more reliability.
Until then keep a sharp eye on your accessory tank and make sure you drain it periodically. Yes it is under the coach. Yes it is hard if not impossible to get under to drain it. Yes if you do get under the coach it has to be supported for safety reasons.
-
Don, thank you for the response. I thought I knew 2 & 3, but the water trap doesn’t appear to drain. It probably does, but is frozen closed. I have seen your setup on a thread before I believe. Can you point me in the right direction for sourcing?
Jon, thank you as well. I will replace it with a more efficient setup and get a spare versa valve also.
-
I made a slight modification to my Liberty aux compressor system, eliminating the trap and versa valve.
I added a Norgren water trap with the water bowl level indicator and replaced the valve with a check valve that prevents pressurized air from returning to the compressor. Simple system, traps a lot of moisture and is easy to monitor and drain and I do not have an electric valve that may fail.
-
Jim, on ebay or amazon, use the search words “water trap filter” and take your pic.
-
Thanks, I have been looking at some of those. Sorry I haven’t gotten back in a while.
-
I was going to start a new thread today and noticed that I left this hanging in February. I think I had started to reply and got involved with a leaking water heater. After a not so quick trip to see Jeff, I lost track.
Anyway, I followed Don’s example and went with the double trap configuration only with auto drains. I left a Norgren trap that had a working drain, not pictured, and replaced the faulty one with two new ones.
Thanks to everyone for the replies.
Log in to reply.