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joe-ice
09-08-2014, 09:12 PM
Hi guys ,Have to recover charge out of a small plate water chiller (14kgs) to repair a leak.System has no receiver and nowhere to recover liquid directly .Water will be running through exchanger at about 20c.Just still a bit worried about freezing in plate .Can any of you guys that have done this regularly offer any advice.

Brian_UK
09-08-2014, 09:24 PM
Why should the refrigerant recovery cause any problems?

It is being removed from the system, not flowing around the system.

install monkey
09-08-2014, 09:29 PM
your water is circulating-at 20 deg so no issues

joe-ice
09-08-2014, 09:32 PM
Its a plate chiller , there will be liquid trapped in the plate boiling off .The question im kinda asking is if the water is running through the system is ok to just recover full out or will i have to recover down to the freezing point and stop and let the liquid boil off above freezing point.

joe-ice
09-08-2014, 09:36 PM
Sorry install was typing as you posted ,last post should have come out under brians,

install monkey
09-08-2014, 09:37 PM
youve got a constant heat load, so no issues- if you wanted can you isolate the plate (water side) and drain it if your really worried- or disconnect the compressor,power up the chiller and moniter the flow ,return water temps

joe-ice
09-08-2014, 09:44 PM
id be more worried about draining it in case there is any still water trapped in it .Amazing ,ive been around a while but never came across a water chiller before . Are we ever finished learning in this job.

RANGER1
09-08-2014, 10:28 PM
id be more worried about draining it in case there is any still water trapped in it .Amazing ,ive been around a while but never came across a water chiller before . Are we ever finished learning in this job.

If it has not been said already, keep the 20 deg C water flowing at all times & no problems if possible.

joe-ice
10-08-2014, 04:12 AM
This is what im looking for .The machine is a cooling system on a laser lathe . If i pull the charge quick when theres 20c water has anybody seen ice to form in the exchanger.

RANGER1
10-08-2014, 08:56 AM
This is what im looking for .The machine is a cooling system on a laser lathe . If i pull the charge quick when theres 20c water has anybody seen ice to form in the exchanger.

Only if you do not keep water circulating

monkey spanners
10-08-2014, 01:54 PM
Also be careful when charging the system back up, till its above 0c saturation pressure.