On 1/17/11 7:16 PM, Jack. wrote:
On Jan 17, 6:39 pm, wrote:
"I am Tosk" wrote in l-september.org...

In articlecee50221-872b-450d-a446-9c59166b96d2@
29g2000yqq.googlegroups.com, says...



On Jan 16, 1:26 pm, wrote:
The manual is silent on how much you open the gas valve on the tank. I
opened it all the way and then shut it off when the "test" was finished.

You should always open the valve all the way on an LP tank. They are
designed with a "back-seat", which seals the valve stem when openend.
If you partially open it, gas can leak from the stem.

Wow, I did not know that.. I never seat anything unless I need to.

--
Rowdy Mouse Racing - Pain is temporary, Glory is forever!

Reply:
TOTALLY WRONG!!!! Crack the valve about 1/4 turn. Same with all flammable
gas cylinders. O2, Argon etc. that are high pressure and inert have back
seals. You want to be able to turn the tank off quickly if there is a leak
or fire. Take any welding class and you will learn about gas safety.
Propane is a lot safer than a lot of the flammable gas as it is a liquid
under pressure and therefore is at a lot lower pressure in the tank.
Acetylene is a higher pressure in the tank but is in solution in acetone (I
think that is the liquid) as acetylene will self ignite explosively at a
fairly low pressure.

From the Weber website:

Cart Based Models
* Close the LP tank valve
* Turn all burner control knobs to the OFF position
* Open the grill lid
* Turn the LP tank valve until it is completely open
* Wait several seconds
* Turn the front burner to the HI/Start position
* Press the igniter until the burner is lit.
* Turn remaining burners to High
* Close the lid.
* The grill should preheat to 500-550 degrees in 10-15 minutes

As you point out, LP is not the same as acetylene.

Those are the instructions on how to resolve a particular problem, not
the directions for S.O.P.