My new compressor arrived today, GX CS4-I, and in typical Chinese fashion the manual does not state the amount of distilled water to fill the unit. I have filled the reservoir and started the water pump adding additional water as needed to bring the unit up to the stated fill line but I would like to know the total amount of water necessary. Knowing the volume required will help me calculate the amount of Water Wetter to add. Thanks in advance.
GX CS4-I compressor
- Thread starter rdtricks
- Start date
Don’t quote me but for some reason 500 ml rings a bell. Also have you seen the vids showing to tilt the compressor with water pump running to bleed out air ? Removing any potential air pockets increases it’s cooling capability.
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Thanks for the reply. Yeah, I have watched the videos but thought something was off within my water system because it did not seem to take much water to fill - thought it would take more. Oh well, it seems to be running well. Dead head test was fast, filling my first rifle went quickly, quietly and without any real heat being pushed out by the fans.
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I seen a video where someone said the cooling system has a flaw. Both the inlet and outlet hoses are on the bottom of the radiator so there is a big air bubble that cant get out. The fix is removing the radiator and re mount it on its side. Have the top hose the return to resivoir. They say it runs a lot cooler now that the entire radiator is working . I did this to mine. Only need a screwdriver to remove cover and radiator mounting screws. No modifying anything .Super easy and quick to do.
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The manual says 500ml of coolant. Mine took only about 300ml, I emailed GX tech support and they confirmed the manual is wrong and that they would change it. 300ml is the correct amount.
Tilting the compressor did get some trapped air out but that didn't change the amount of coolant needed. I didn't check the radiator orientation but I just got my compressor this week.
Tilting the compressor did get some trapped air out but that didn't change the amount of coolant needed. I didn't check the radiator orientation but I just got my compressor this week.
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New stock cs4 and cs4-i compressors come from the factory with the radiator rotated.
They were made aware of the advantages months ago and implemented the change at the factory.
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250~300 ml. And don't just use DW alone, as it will erode the aluminum over time. Must add either water wetter (my choice because it never freezes here) or AF 10-20% if warm where you are, (for better cooling), up to 50% if it freezes where you are.
Base your calculations on 250 ml and you'll know how much of each to add. Redline recommends 1.8%~3.1% ratio with DW. That's about 4-8 ml of WW to 242 ml DW.
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I contacted factory support. The GS cs4 holds 300 ml, not 500 ml as the manual says. GX said they will update the manual.
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I have emptied my CS4 several times (about five, and blew all the water out with air) and refilled it. It takes about 250 (edited because I misremembered; @Kerslachon was correct!) ml. I am going by a measuring cup, not a manual.
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That's interesting because I measured the amount of coolant it took to fill my CS4 and it's very close to 300 ml - also by measuring cup.
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Buddy, I owe you the biggest of apoligies...
Went back to my thread on my CS4 setup (https://www.airgunnation.com/threads/my-gx-cs4-i.1308841/), and my measurements were more along the lines of 242 ml DW and 8 ml WW, for a total of 250ml, which is more in line with what GX told you. Had I but checked my own thread sooner, I could have saved all this time re-posting wrong info to you, and we could have talked about all the targets he have slayed with our guns!
Again, sincerely apologize, you were right, and my old-man memory was flawed. Perhaps I need to change jobs to something which has my name on my shirt so I won't forget!!
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If it were me, I would mix the wetter and water to the proper mix in another vessel and just put what I needed in the compressor res. I would mix enough and keep on hand for a couple changes.
Plus I would have some on hand mixed properly if I ever need to add some.
Plus I would have some on hand mixed properly if I ever need to add some.
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Great plan! I would also add... even though DW alone causes the BEST heat transfer, and it gets worse as the ratio of AF/DW gets higher (up to 50%), the temps we are daeling with a LOW as compared to a vehicle or boiler system, so even if one were to use 100% AF with zero DW, one would likely be fine.
(Having said that, if one is in a climate where it never freezes, a 10-20% AF/DW ratio has better heat transfer than a 30-50% AF/DW ratio when it comes to high-temp systems.)
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No problem. I was beginning to wonder of GX had done a part change without telling us. I'm OCD enough that I checked how much coolant I put in compared to what the manual said because I was worried about having to burp the cooling system. My compressor was delivered last week (July 22), so it's current production.Buddy, I owe you the biggest of apoligies...
Went back to my thread on my CS4 setup (https://www.airgunnation.com/threads/my-gx-cs4-i.1308841/), and my measurements were more along the lines of 242 ml DW and 8 ml WW, for a total of 250ml, which is more in line with what GX told you. Had I but checked my own thread sooner, I could have saved all this time re-posting wrong info to you, and we could have talked about all the targets he have slayed with our guns!
Again, sincerely apologize, you were right, and my old-man memory was flawed. Perhaps I need to change jobs to something which has my name on my shirt so I won't forget!!
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Well, that means that the radiator is probably already rotated. Still, I'd recommend you turn it off, pick it up, and rotate it 9 ways to Sunday, then set it upright and turn it on and see if there were any air bubbles trapped in the water loop. Bubbles of air seem to be pretty normal for these machines.
Enjoy the compressor, it's a pretty good on, IMO.
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