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Thread: help on a question
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25-11-2006, 03:49 AM #1
help on a question
ok hi to every one
my name Jeff and i have a tricky question in relation to evacuation of refrig lines
WHAT IS A "DROP TEST"
Has any one heard of this
thanks again
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25-11-2006, 04:28 AM #2
Re: help on a question
Welcome to the Forum Jeff!
A "Drop Test" is when you pressurize a System or part of a system for a period of time and determine the amount the pressure drops off.
For instance a piece of equipment might be pressurized to 150lbs and considered passed if it lose no more than 2lbs in 24 hours.
Ideally it will not drop off at all.
However. changing temperatures and other factors may cause some pressure drop without there being an actual leak.
In many cases it is considered a preliminary test.
It could also be used to refer to a Vacuum test. The local vernacular may vary.
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04-12-2006, 09:05 AM #3
Re: help on a question
Dear Friends
Can I please know the replacement of R403B or the Equivalent Gas? can I replace instead of R403B R22?
Thanks, and Best Wishs
Kaaykaay Electrical Store
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04-12-2006, 12:41 PM #4
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06-12-2006, 10:24 PM #5
Re: help on a question
Kaaykaay....don't forget that R404A or R507 require Polyolester oil.