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Thread: Charge R134 without a scale
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09-11-2011, 01:24 PM #1
Charge R134 without a scale
Hi
I know that a scale can delivery a precise refrigerant charge.
However many of my students cannot afford for a scale.
I would like to improve a technique that I learnt years ago still in R12 times.
How can I charge R134 in a domestic fridge without a scale using only the manometer as a reference ?
Could anybody describe it step by step right after the vacuum step ?
Moises
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09-11-2011, 05:38 PM #2
Re: Charge R134 without a scale
Acrisoft, If u can mesure subcooling 5...8K I suppose it is correct. Sorry, I'm not domestic frige specialist...
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09-11-2011, 08:39 PM #3
Re: Charge R134 without a scale
easier ways i find is sweating of suction pipe with a clampmeter testing comp run amps but on a domestic you could charge on a standing pressure or and dont laugh during my junior years mothers bathroom scales they lasted bloody years but not so good on a small difference my lastest set of scales is 1 gram acuracy i think the bathroom scales depended on time of day and no battery to change
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09-11-2011, 09:32 PM #4
Re: Charge R134 without a scale
use 1kg bottles and baking scales- rated for 2kg,small,cheap,and light too.
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09-11-2011, 10:06 PM #5
Re: Charge R134 without a scale
Get Scales from here >>> http://www.vulkan-lokring.de/fileadm...ances__en_.pdf
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10-11-2011, 07:02 AM #6
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Re: Charge R134 without a scale
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Last edited by nike123; 10-11-2011 at 07:29 AM.
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10-11-2011, 07:26 AM #7
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10-11-2011, 07:36 AM #8
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10-11-2011, 07:40 AM #9
Re: Charge R134 without a scale
Can you afford recovery machines,do you have them ?
“Life is like riding a bicycle. To keep your balance you must keep moving” Einstein