GX E CS4

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Avator

Avator

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Jan 14, 2025
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Lower Alabama
My CS4 arrived yesterday. I unboxed it and connected it to the GX Pro Drian Filter that arrived a couple days ago.
I ordered directly from GX and something happened and the 10% discount with the code "GX10OFF" didn't apply and so PayPal sent the full $569.
I contacted GX through e-mail and explained that it didn't apply the code. Within 24 hours Jason returned my e-mail informing me that he sent the 10% discount amount to PayPal. I see the refund in my PayPal account but it has yet to post bank into my bank account. I don't have the option to transfer it manually. PayPal says I just have to wait until the bank acknowledges the credit. If that don't happen by Monday I will contact my bank.
 
Reason I chose the external power supply as opposed to the internal? Well, there are 2 reasons.
The first being heat. I don't want the extra heat inside the case of the compressor. It may not be significant but I just don't want it.
The second reason is replacement if ever needed. If you look at the internal ps compared to the external, the internal has a proprietary configuration whereas the external is in the typical configuration design of power supplies that other compressors use and can be purchased as a much lessor cost if a failure occurs. I happen to already have a couple here.
There is also a 3rd reason that might be significant to some folks that wish to take the compressor on the road and run it off their vehicle's battery. Why carry the added weight of the power supply?
But for me, heat was my biggest concern.
 
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The CS4 is packed well and would probably survive even the clumsiest shipping handler.
GX includes a generous kit of tools and bits needed for at least one rebuild of perishables... maybe a couple.
I saw some videos where the compressor had been shipped with water in the reservoir. Mine was shipped dry.
This made me question if it was shipped with any grease in the grease pot. I checked it and there was some grease in it but there was room to add at least that much more. I added food grade green grease to the pot and checked that the rubber bladder was installed correctly.
 
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I had ordered the GX Pro Drain filter at the same time and it arrived a couple days prior to the compressor. I also ordered a qt. of PH neutral RV antifreeze concentrate that mixes 1 part to 3 parts distilled water. Those arrived with the compressor.
I mixed up a batch and filled the compressor tank. I turned the compressor on and watched the fluid circulate into the system then topped it back up.
I leaned the compressor from side to side as it circulated to make sure there were no air pockets in the system.
 
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I also ordered a vibration sensing hour meter that should be here today. I didn't want to run the compressor too much without it. I want to be sure I follow recommendations on turning the grease pot knob. Target Forge reported that most issues he's seen with the CS4 were due to over or under adding of the grease.
That brings up another point... The instructions that come with the compressor. I understand cutting corners to keep costs down but, dude, really? I've had a new pair of shoes come with more instructions. If not for online videos from folks like Target Forge I would have not known if I was doing things right or wrong.
My suggestion... watch some videos.
 
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Break in and test run..
After routing and connecting the GX filter I hit the switch on my power strip and the power supply came to life. Sounds like a pretty powerful fan in there.
Then I turned on the compressor fan. Whoa... now that thing moves some air. That's a good thing.
I ran the compressor for a few minutes with the bleeders open then closed the bleeders starting at the bottom of the filter, next the top of the filter and finally the bleeder on the compressor. After a few more minutes I shut it down, opened the bleeders and put a dead head in the whip's end.
I fired the compressor back up and closed the bleeders again.
After a couple cycles of running the compressor pressure up enough to open the gate on the filter at around 1800 psi then bleeding, I set the auto stop to 300 bar and let 'er rip.
The auto stop worked as designed according the the compressor's gauge.
 
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Avator said:
Break in and test run..
After routing and connecting the GX filter I hit the switch on my power strip and the power supply came to life. Sounds like a pretty powerful fan in there.
Then I turned on the compressor fan. Whoa... now that thing moves some air. That's a good thing.
I ran the compressor for a few minutes with the bleeders open then closed the bleeders starting at the bottom of the filter, next the top of the filter and finally the bleeder on the compressor. After a few more minutes I shut it down, opened the bleeders and put a dead head in the whip's end.
I fired the compressor back up and closed the bleeders again.
After a couple cycles of running the compressor pressure up enough to open the gate on the filter at around 1800 psi then bleeding, I set the auto stop to 300 bar and let 'er rip.
The auto stop worked as designed according the the compressor's gauge.
Click to expand...
I'm very happy w/ my GX (4) . AND, I'm with you on the separate power unit . Mine puked on my 3rd use ! Replacement was handled in 2 days.
 
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Next I replaced the dead head with a known accurate gauge that I keep for testing. I fired it back up and it again stopped at my set 300 bar. The test gauge matched exactly to the compressor gauge. So far, so good.
What the heck, lets top off a gun..
The AV Avenger was handy and it was down to the reg set point at 2100 - 2300 psi (those gauges are too small for my old eyes to read accurately).
I connected the whip, pressed "play" and closed the bleeders.
The fans on this compressor are louder than the actual compressor running. I almost had to feel the thing to make sure it was pumping. Especially if you are looking at a gauge downstream of the filter. That gauge wouldn't even move until the filter builds to 1800 psi.
But once it reached that point I saw the gauge on the gun and the gauge on the compressor equalize.
I didn't time it but I will say that it topped the Avenger up to it's 300 bar max in about the same time it takes the CS3 to bring a 3k gun up to max fill.
But not nearly as fast as the Yong Heng.
However... just the sound comparison between the GX and YH makes you step back from the YH almost expecting it to explode in you face.
 
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Avator said:
My CS4 arrived yesterday. I unboxed it and connected it to the GX Pro Drian Filter that arrived a couple days ago.
I ordered directly from GX and something happened and the 10% discount with the code "GX10OFF" didn't apply and so PayPal sent the full $569.
I contacted GX through e-mail and explained that it didn't apply the code. Within 24 hours Jason returned my e-mail informing me that he sent the 10% discount amount to PayPal. I see the refund in my PayPal account but it has yet to post bank into my bank account. I don't have the option to transfer it manually. PayPal says I just have to wait until the bank acknowledges the credit. If that don't happen by Monday I will contact my bank.
Click to expand...
It's the weekend, you will likely have to wait until Tuesday or Wednesday to see that refund hit your PayPal account.
 
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