Flushing Agent

[dallas]

We have flushed out a system following a mechanical failure with the compressor.

We are having trouble getting the system below 1000microns and feel that there is still flushing agent in the system.

We have done the following:
- blew through flushing agent with nitrogen
- broken the vacuum 4 times
- had all components removed from the system during flushing
- heated up the system to boil off the flushing agent.

We are now about to start up the system with regular liquid line and suction line drier changes.

Anymore ideas???

[Electrocoolman]

Sustained Pressure test?
Fresh oil in vac pump?

[superswill]

new vac oil and using the 3/8 line instead of the 1/4(if your vac pump has the option) ive found this not saves time but achieves better results quicker for me personally

[Lowrider]

What did you use to flush?

Test the vac pump by putting the vacuum meter on it directly and see if it will pull down futher!

Otherwise do a pressuretest and leave it pressurized for 24 hours. No drop in pressure? Do an other blowtrue with nitrogen, check your hoses and pull it down again!

[Toosh]

Hi Change the oil in your vac pump and it turns grey again then you still have moisture. What kind of system is it?. Is it possible to drill a hole at the lowest point and drain water as I used to do, but then I am talking big centrifugals.

Regards Toosh