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Old 09-10-2012, 08:36 AM   #15
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Tom, to Airforums.com! Lots of good info here for the care and feeding of your Giant Shiny Hotdog! (GSH)

For the WH, try this: pull off the outer cover, and you will see a large (about 2") pipe that goes into the tank. It has the burner mounted at its opening. Take a can of compressed air and blow that pipe out, being careful not to stand in front of the other end of the pipe in the top left corner of the HW heater. I have to do that every spring, due to spiders building so many resilient webs.

As for the refer (fridge), get the Owner's Manual and look up the servicing part. It needs to be cleaned up from time to time, and the book shows exactly what to do. An '84, even if it hasn't been continuously used on LP gas, is probably in need of a cleaning.

If you don't have the refer Owner's Manual, it's probably available online for free... Just Google it.

Good luck, and keep us informed!
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Old 09-10-2012, 08:46 AM   #16
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Quote:
Originally Posted by Tom Williams View Post
One final thought however. Why does Airstream have a sticker on my trailer that says do not fill lp bottles more than 80%?
That is a regulatory requirement in most states, taken from NFPA 58, the "LP Gas Code". Liquid propane does not occupy the same volume at all temperatures; at high temperatures the liquid expands. Not filling the bottle beyond 80% is meant to give the liquid room to expand when the temperature goes up.

This website (Propane Volume Correction - Temperature and Liquid Propane Volumes) explains better than I could.
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Old 09-10-2012, 09:13 AM   #17
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Hey Tom
You shouldn't worry about your tanks being overfilled as there are procedures when filling to prevent this. They are either weighed during fill or have a 10% valve which will bleed liquid propane when it is being filled which is the operator's signal to stop filling the tank. The liability is huge if the operator screws up and they could lose their license besides being liable for damages or injury. As others have said, check for gas at the particular appliance. Easiest is to soap the joint (flare fitting) and crack it loose and see if you get bubbles. If so, the issue is in the appliance. Be sure you bleed all the air from the lines as with pilots and the refrig, the gas volume is so small that it can take 5 minutes of holding the pilot button in before you get a gas flow as you purge the air.
Terry
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Old 09-10-2012, 02:48 PM   #18
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Tom.
Your tanks should be checked to be sure they are compliant with current guidelines. They will have a three-prong valve knob if they have Overfill Protection Devices installed. Here's a link on the 80% question: Propane Tanks and the 80% Fill Question | Propane.pro

It's not likely overfilling, even if possible, would stop your system from working unless liquid propane got in the line somehow, from what I read.
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Old 09-10-2012, 02:54 PM   #19
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Valve Pictures.
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Old 09-10-2012, 03:37 PM   #20
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Some times it takes a very long time to purge the air from the line to my fridge, especially if I run the bottle out of gas. I clocked it once at 4 minutes after switching tanks, and that seems like an eternity when holding the button.
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Old 09-12-2012, 09:47 AM   #21
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Hi Greg: I see your picture and can ad that my tanks have not been converted over to this new standard. Now that I am getting up to speed on some of this stuff I am surprised that the previous owner, who filled the tanks just prior to me making a deal with him, was able to get them filled. Funny thing is that two replacement valves of the new style were in a box in the kitchen?
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Old 09-12-2012, 09:59 AM   #22
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Thanks Terry: I like the idea of cracking the fitting to see if I am getting somekind of gas flow. Whenever I try firing up I never even get a hint of propane odor from either the frig or HWH. I have blown out any things like spider webs, fired up the heat and range on the Curbside to purge etc. Frig works on electric. Both appliances have electronic ignition that are both firing away.
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Old 09-14-2012, 05:51 AM   #23
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At this point I think you could take a logical approach to the problem by working from the supply back towards the appliance.
The propane lines are situated under the coach, at each junction for an appliance there is a 'T' or a straight compression fitting, with the tank valve on, starting at the regulator and using a pair of wrenches, crack open the fitting and check for propane flow (smell). At some point there will not be a flow of gas and the blockage will be able to be determined.
Several possibilities include debris from the tank valve, insect nest on mud dauber, a closure due to foreign object damage or even a closed valve (my unit has two valves in the lines underneath).
This is the same logic as chasing down a electrical problem and should result in a fairly quick answer as to a supply restriction.
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Old 09-22-2012, 03:40 PM   #24
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Newbie with propane problem on curbside

Thanks everyone for your help. Presently I am working of the theory that the problem with my propane appliances on the curbside are separate issues. The HW I discovered had a bad coil in the solenoid valve. I order a replacement part and if that gets my HW going then I will have to treat the Frig as a separate issue. I saw some good recommendations for addressing that earlier in this string...THANKS EVERYBODY!
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Old 10-02-2012, 06:30 PM   #25
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Update: Propane problem 1/2 solved

Hello Everyone:
Just and update to let you know that my problem apparently was not ONE.
I drilled into the HW Heater and discovered that one of the solenoids was shot on the gas valve. Took me awhile to get a replacement shipped from CA but when I replaced it she fired right up!
So...my Frig not wanting to fire on propane is a separate issue and I will need to start doing homework on that.
Meanwhile, while I was trying to test the hot water system and wanted to be sure the tank was full I ran into another mystery. I have poured over this '84 AS 34' Limited and I'll be darned if I can find the city water hookup. Yes, I have looked in the roadside bumper.
Also discovered that I cannot find the shutoff valve to turn off the water flow to the roadside hose for cleaning up. Whenever I turn on the pump I just start emptying my fresh water tank through the hose.

Thanks in advance for any help,
Tom
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Old 10-02-2012, 06:53 PM   #26
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Good to hear you made some progress. Feels good dunnit?

if you have the book that includes how to service your refer, look up the cleaning part. They tend to get sooted up with age, perhaps it only needs a good cleaning..?
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Old 10-03-2012, 11:37 AM   #27
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Tom,

With OPD valve (overfill protection device) equipped bottles, you shouldn't be able to overfill them.

When you open the valves, do it gently and slowly, as flipping them open fast will sometimes cause an OPD valve to close, thinking that there is a leak.
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