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Old 08-24-2017, 08:34 PM   #1
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New Class A Purchase and Propane Purge Question

On Monday I am picking up a new Tiffin 31MA motorhome. It is a Ford gas chassis. I have been told it is critical to ask if the propane tank has been purged by a certified technician and ensure I have the documentation to the affirmative. Do any of you know anything about this and is this something I need to ask about. Thanks in advance for any advice.
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Old 08-24-2017, 08:41 PM   #2
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When the tank is filled they open a bleed valve which will purge the air as the tank is filled. The air will need to be purged out of all the lines like stove, water heater, etc.
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Old 08-24-2017, 09:24 PM   #3
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Dealer should have put some propane in to check that all gas appliances work.
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Old 08-25-2017, 07:08 AM   #4
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There is a procedure to purge NEW propane tanks.

The bleed valve they open to fill does not let air out, it lets vapor gas out. When it spits liquid, that's a sign of a full ( 80% capacity ) tank.

For those who want to know the correct way, here is some reading.

http://home.earthlink.net/~derekgore...like/id45.html
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Old 08-25-2017, 07:14 AM   #5
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I would not worry about it unless the tank is flat empty when you pick it up. If empty they most likely didn't check the gas appliances either.
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Old 08-25-2017, 07:24 AM   #6
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Your MH should be delivered with a full propane tank. Anything less and the dealer is cheaping out. Makes you wonder where else he is cutting corners.
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Old 08-25-2017, 07:29 AM   #7
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Quote:
Originally Posted by twinboat View Post
There is a procedure to purge NEW propane tanks.

The bleed valve they open to fill does not let air out, it lets vapor gas out. When it spits liquid, that's a sign of a full ( 80% capacity ) tank.

For those who want to know the correct way, here is some reading.

Purging new Cylinders and Tanks
Thank you for posting that very educational link! I learned several things that I have been doing wrong and thought were right.

I wonder how many dealers actually perform the procedure outlined in your link, I'm betting not very many!

Thank you again for the link!!!
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Old 08-25-2017, 07:29 AM   #8
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I regard propane tank purging as in the same class as filling tyres with nitrogen -- cost money and wastes time for nothing. Fill it up and run the cook top with ignitor sparking until the burner lights and then the tank is purged.
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