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kerrcell
14-06-2011, 11:30 AM
Guys,
I have a 4 door fridge comersa.No model label.Compressor was replaced to an Electrolux GP12TB 2 years ago. running on R134a. I need to change again compressor.Any on know how much grams to charge of R134a ? Compressor is 12ccs ( 510w approx)

stufus
14-06-2011, 04:43 PM
I presume you will recover the existing charge ?
So recharge with the amount removed prior to the work been undertaken.
Cheers
Stu

james10
14-06-2011, 05:03 PM
I presume you will recover the existing charge ?
So recharge with the amount removed prior to the work been undertaken.
Cheers
Stu
Lol like that's gonna happen

stufus
14-06-2011, 06:19 PM
Lol like that's gonna happen
Probably not!
Cheers
Stu

simon@parker
14-06-2011, 08:30 PM
like the comments reclaim lol how about you apply the 15 deg rule of thumb see if it works :)

Toolman
14-06-2011, 10:29 PM
Does the 4 door cabinet has a evaporator fan ? If so disconnect the power to the fan charge till coil fully flooded , reconnect fan . Once you restart the fan it will have some work to do so just pack up and go to the pub or home !!

install monkey
14-06-2011, 10:32 PM
squirt and blow method-overcharge,wait for suction to flood back,blow a bit,wait,blow a bit,wait. if it reaches temp,great if not add a bit,bit more repeat if nessesary!

mikeref
14-06-2011, 11:34 PM
Guys,
I have a 4 door fridge comersa.No model label.Compressor was replaced to an Electrolux GP12TB 2 years ago. running on R134a. I need to change again compressor.Any on know how much grams to charge of R134a ? Compressor is 12ccs ( 510w approx)
EH? 12cc compressor on a 4 door? Are you working on a stand alone 4 door bottle cooler?

kerrcell
15-06-2011, 03:56 PM
Hi guys,

A late reply though ! Yesterday during the night manged to change compressor.Have reclaimed but charged with fresh gas.I worked by superheat but the idea of temporary disconnecting the evp fan,I liked and will try next time .What is the 15 degrees rule,I presume it is tyhe superheat you are referring to .

simon@parker
15-06-2011, 06:22 PM
15 degree rule of thumb take air on condenser and add 15 degrees to it and get your comparitor out find that temp on the gas you are using and thats what yr discharge should be when fully charged dead easy one to remember that and easy :)