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Old 04-27-2018, 08:24 AM   #1
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Parker Air Filter / Dryer thing?

In my compartment D1 (under the drivers seat), I have my auxiliary air pump for my air bags / levelling system?

Attached to it is a small bottle like item that says Parker on it. I look up the part number and it talks about a filter or dryer?

Anyway, this little bottle has a small cylinder below it and a wire attached to it. The cylinder is loosely mounted, meaning you can wiggle it slightly.

So my question is what exactly does this do... and more importantly, mine is regularly hot to the touch... is this normal?
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Old 04-27-2018, 08:30 AM   #2
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Hopefully the photo comes through?
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Old 04-27-2018, 08:33 AM   #3
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If it is like mine, this is a air/water separator and has a small normally open solenoid valve on the bottom. When the pump gets power, the solenoid closes. When the pump shuts down, the solenoid valve opens to drain any accumulated water.
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Old 04-27-2018, 09:13 AM   #4
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Is it normal for the compressed air separator to be hot when the compressor has not been running? My coach is sitting without the leveling system engaged, so I don't see any reason for the compressor to come on... and I have not heard it... yet the cylinder is almost always HOT
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Old 04-27-2018, 09:15 AM   #5
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I've been researching this as well for the past week or so.

It's a Parker Pneumatics air dryer for your accessory compressor which has a primary job of performing the auto-level system once the engine is turned off.

I too thought it strange that the solenoid stays hot all the time and is a loose fit on the drain glass.

I traced the power and it runs off of a 40amp circuit tied to the house batteries and is hot all of the time, even with the house battery switch being off. In turn, it has a 15amp circuit to the compressor which I believe is a sense line and power feed so when the compressor is on, it will turn off the solenoid to build pressure.

On a thread from 2014, it discusses testing the air dryer with the engine running and see if you have any leakage as the compressor feeds in to the main air system. Apparently it should have a check valve to the main system to prevent losing main air.

I found the 15amp fused link blown on my compressor so I've been trying to research how it all works.

That dryer is long discontinued and cannot find any wiring info etc., from Parker. HWH packaged it with the auto-leveling system but I have not received a call back from them.

So, I can't be of any help really except to explain what I think is the correct function and how it operates.
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Old 04-27-2018, 11:33 AM   #6
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Quote:
Originally Posted by TTD View Post
In my compartment D1 (under the drivers seat), I have my auxiliary air pump for my air bags / levelling system?

Attached to it is a small bottle like item that says Parker on it. I look up the part number and it talks about a filter or dryer?

Anyway, this little bottle has a small cylinder below it and a wire attached to it. The cylinder is loosely mounted, meaning you can wiggle it slightly.

So my question is what exactly does this do... and more importantly, mine is regularly hot to the touch... is this normal?
Had the same problem. Found that CC had reversed the wiring at the factory. Trace one of the black wires coming from the solenoid and it will attach to a small relay that controlls the compressor. The wire will be attached to the line side (always hot) side of the relay. You need to move it to the load side so it will only be hot when the compressor is running. Seems to be a common problem.

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Old 04-27-2018, 10:56 PM   #7
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Excellent... I will check this out tomorrow

Quote:
Originally Posted by BarneyM View Post
Had the same problem. Found that CC had reversed the wiring at the factory. Trace one of the black wires coming from the solenoid and it will attach to a small relay that controlls the compressor. The wire will be attached to the line side (always hot) side of the relay. You need to move it to the load side so it will only be hot when the compressor is running. Seems to be a common problem.

Barney
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Old 04-28-2018, 11:01 AM   #8
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Done! Thank you very much BarneyM!
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