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Thread: compact screw oil carry over
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17-08-2019, 08:49 PM #51
Re: compact screw oil carry over
Originally you say you were draining oil from ice machine & was very dirty?
Now you get nothing.
You can return oil from evaporator automatically if set up correctly, but if in condenser, which I find hard to believe, then eventually it will pass into evaporator.
Pump out condenser, see if any oil in it like people suggest.
Better still, put R32 & air in it, then pump it down, but wear fire suit
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21-08-2019, 08:41 PM #52
Re: compact screw oil carry over
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Re: compact screw oil carry over
Sorry for my late answer, but I have been out of town
But here is the way to control the oil return from your LP side.
I have been looking fro a proper drawing so I didn't have to make one myself..
draining-suction-line1.jpg
Now if you look at this picture.
On the left side is the oil return to the suction, there is a solenoid valve and a manual valve.
The solenoid valve should open 3-5 minutes after the compressor started. The manual valve should be a hand regulating valve, and after the hand regulating valve should be a sight glass, so you can correctly adjust the flow of oil/refrigerant going back into the suction.
If you look at the right side, there is a level control valve controlled by a simple regulator...
20 years ago when I worked on these machines, the level were controlled by a danfoss RT280, and they worked like a charm
https://assets.danfoss.com/documents...3586432642.pdf-Cheers-
Tycho
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