[ashley]

My Air Pump has been running every 25 minutes. I have soap tested everything I know and no Leaks. Took Linda outside because her ears are not ruined by jet engines like mine. Right away she said the air water separator in the rear was leaking. I had sprayed that and no bubbles. Could not understand why. Got a small zipplock bag filled it up with water, submerged the  separator in water bubbles everwhere. Painted the inside with superglue, pump runs once every 2.5 Hours.

[Richard]

Common failure. The polycarbonate bowl cracks. Some have removed the separator. Never saw one drop of water in mine

[ashley]

Common failure. The polycarbonate bowl cracks. Some have removed the separator.  Never saw one drop of water in mine

This one was only 1 year old

[lbrachfe]

Removed my separator and drain the tank manually once a month via petcock in easy to reach location.
Elevation can also make your compressor run much longer per cycle ( Thin Air ). We have found that in Indio at 40 feet above Sea Level our compressor runs for 65 seconds per cycle , no matter how many it runs per day, but in Santa Fe at 7500 feet the compressor cycle is 2 minutes, give or take 5 seconds. This is 70 - 100 lbs.

As HWH manuals all indicate. "This is not a leak less system", so results may vary...

[ashley]

Removed my separator and drain the tank manually once a month via petcock in easy to reach location.
Elevation can also make your compressor run much longer per cycle ( Thin Air ). We have found that in Indio at 40 feet above Sea Level our compressor runs for 65 seconds per cycle , no matter how many it runs per day, but in Santa Fe at 7500 feet the compressor cycle is 2 minutes, give or take 5 seconds. This is 70 - 100 lbs.

As HWH manuals all indicate. "This is not a leak less system", so results may vary...

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Was not about how long pump runs. But between cycles

[ccjohnson]

You might try putting in a check valve downstream of the separator out flow.

[pairodice]

We have the same problem but since we have landed after picking up our new coach I have noticed a marked decrease in the number of times the system air compressor cycles. Are you guys referring to the air dryer as the culprit?

[Fulltiming]

There can be dozens of potential locations for air leaks, the air dryer is one of them but other than in freezing weather, not one of the main suspects. As a reference, Newell does not consider air leaks to be significant unless the 120 volt air compressor is coming on more often the every 40 minutes when the coach is parked. That said, some of our more industrious owners get hours between air compressor cycles by frequently going through their system and resolving small leaks.

Basically, every connection in the air system is a potential source of an air leak. The ride height valves, the pneumatic cylinders, the air suspension control solenoids and the fittings to each of these are some of the primary sources. The air operated pocket doors, air operated toilets and the fittings to the air drivers seat are the also sources that should be investigated along with any other items in your particular coach that use air (dump valves, dryers on the various air compressors, pneumatic slides in the bays or for the generator, etc). Large leaks can be fairly easy to track down, smaller leaks will benefit from a sonic leak detector.