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Thread: Temprite and oil return.
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23-05-2012, 10:50 AM #3
Re: Temprite and oil return.
OK - the system doesn't deal with oil return, I have pumped down and up ended many temprites over the years that have been full of oil and lost their ability to transfer heat. Make sure you have an oil separator on the system. If it disappears the only way it will return is if the float cartridge fails and the temprite overfills with liquid and washes oil back down the suction line, even then its not always possible as although the oil is miscible with the refrigerant as it is sitting stagnant in the temprite it has a tendency to separate out from the liquid and fall to the bottom of the temprite.
The best way to charge the system is to keep a load on the temprite (run water through it with the 750 Valve set at about 5 degrees SST to ensure it doesn't freeze), the temprite will fill to its operating level based on the low side float inside (non adjustable). The run some beer through and back the 750 valve off to achieve beer temp.
No because there is a low side float inside, the temprite will hold more refrigerant than your receiver and cannot be pumped down with the system you are proposing - that is normal with temprite systems though. You could use a suction solenoid but you will see temp swings.
Just fit n LP cycling the unit, cut it in at the same pressure the 750 valve is set to, cut it out just above zero. If it short cycles then kiss cold beer goodbye...and she said "give it to me you big fridgie"