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hoyle
27-04-2010, 12:48 AM
Hi guys new to the forum any help would be great. I recently was working on this York chiller customer wanted to change oil and filters. My question being what is the best method of pumping chiller down? there is a service valve on the discharge line after oil sep but no service on suction, so that eliminates valving off that small section reclaiming and changing oil. I have seen on here about using your reclaimer and reclaim cylinder to transfer oil to cylinder and vapor back to chiller, but i am concerned with air getting into system with this method and pumping against pressure. There is a liquid line valve but I am not sure what LP switch opens and I am not even sure if you can get machine down to 0 any suggestions would be appreicated

serviceman
27-04-2010, 04:25 AM
want to evacuate to 0 the machine? to change oil filters, oil and dehydrated just need to close the valves,

syahidian
05-05-2010, 10:21 AM
u don't need to pump down, just drain the oil from oil separator and close the valve to change the filter