Water in the Evaporator Refrigerant Side

[pipe]

Hi Fellas,

I wanted to know what are the symptoms to look for when I have water leak into an evaporator shell on a screw chiller? My guess is that it would start driving the evaporating temp/pressures down and discharge pressure would increase. Any thought? I would appreciate your help on this.

[r404a]

If you are dealing with a hermetic, possibly a smoked motor.


r404a

[r404a]

how about shutting the machine down and checking PTR.

[Dallas Duster]

If it is a screw it might go off on high pressure whatever you do don`t jump it out ,2 words for you .hydraulic pressure

[r404a]

How about oil and refrigerant analysis? Will the machine even run at all?


r404a

[cool_tech]

hey guys,
You could conduct a oil acid test, water would also block up tx valves and if there is that much water in it and its getting back to compressor then it would short out the motor.

let me know how you go

[Quixote]

Milky oil is a sure sign. Also low meg readings.

I would H10 a cooler vent to see if the gas is comming out. In most cases my screws have higher refrigerant pressure than water, In the case where that isn't true I could still drain down the cooler pressure and test.

In my experience the motor goes long before the pressures start acting up.

Mike

[Dallas Duster]

You can also check the bottom of your seperatortrird to get an oil sample one time and when it came out the water and oil-refrigerant mixture froze instantly.

[MuddBuddha]

You could just purge your lowside briefly. The discharging refrigerant will carry moisture out with it. That's a good first indication.