teemyob
09-10-2014, 12:22 PM
Hello,
I hope you clever folks could help me out.
I have changed a very old R12, 12 Volt compressor on a very small narrow boat fridge for an R134a 12 volt.
The Small Ice Box Refrigerator is hand made, was originally built using a 20 odd year old LEC ice box evaporator. There was no refrigerant charge on the hand stamped plate.
So, I replaced the compressor and have charged it with R134a to around 0 (Zero) Psi. Ran for 2 hours with no ice on the suction, just slight sweat.
The client has been back on to say the appliance cools but runs 100% of the time, draining his limited battery bank (Ah's unknown to me at the moment).
A mate of mine has suggested that I change the refrigerant to R49 !? With a charge of 10% less than that of the original (unknown of course).
I was thinking maybe R600a instead?
I have used R600a in an R134a job before. But not sure about the compatibility of R49 in R134a compressors.
Any help, suggestions or advice would be greatly appreciated please?.
TM
I hope you clever folks could help me out.
I have changed a very old R12, 12 Volt compressor on a very small narrow boat fridge for an R134a 12 volt.
The Small Ice Box Refrigerator is hand made, was originally built using a 20 odd year old LEC ice box evaporator. There was no refrigerant charge on the hand stamped plate.
So, I replaced the compressor and have charged it with R134a to around 0 (Zero) Psi. Ran for 2 hours with no ice on the suction, just slight sweat.
The client has been back on to say the appliance cools but runs 100% of the time, draining his limited battery bank (Ah's unknown to me at the moment).
A mate of mine has suggested that I change the refrigerant to R49 !? With a charge of 10% less than that of the original (unknown of course).
I was thinking maybe R600a instead?
I have used R600a in an R134a job before. But not sure about the compatibility of R49 in R134a compressors.
Any help, suggestions or advice would be greatly appreciated please?.
TM