Got my China compressor Problem

[Tweeter]

These compressors can be an adventure but once you get it sorted it should do the trick.  Mine has stopped working once and was an easy fix, also had to completely disassemble and clean the top out since it was shipped upside down and the residual oil left from testing at the factory (prob a one bedroom apt. somewhere in CA) filled the top end.  Keep at it!

[Fly]

Justin How much time do you have on yours. 

                                      Fly

[Tweeter]

Time total?  I would guess 2-3 hours and that's max because I have used it exclusively to only fill my guns.  The longest it took to top off any one of my guns (WarP w/ 350cc bottle) was 2 minutes, give or take.  My Leshiy takes about 15 seconds

[Fly]

Todays report on my Vevor  compressor. I said I was having problems with the compressor starting at first. I had to spin the
fan & so on. I started opening both valves during start up & it ran longer before shutting down. The temps were low so
I was not concerned. This morning I found a probe & looked & saw it went to the head (temp probe).

I ran it a few minutes at a time & finding the temps were running a little over 60C with no load but the compressor was not
tripping the reset switch as before. The heat seemed high for no load. I was not putting ice in my bucket so I did. I noted that
helped some. I,m thinking now it just needs more break in time. I have yet to run it over 5 minutes at one time. One thing I
need to ask, is it normal for the pressure release screw to run hot? It is solid brass with just knurling & no plastic knob as some.

                                                 Fly

 

[bandg]

Haven't noticed this as mine all have plastic heads but these things do generate a lot of heat.  Make yourself some heads on the bleeders out of polymorph plastic or JB Weld or maybe just stick some vacuum hose over them.

[Tonykarter]

Guys, need you opinion.  Mine tops 60 degrees centigrade just pumping my PSP from 150 to 250bar.  About 30-40 seconds.  Should the temperature climb that fast and that high?  If not, what might cause it?  Using about 3 gallons tap water in a bucket.

Other than that mine works flawlessly.  I love it.

[cobalt327]

If the temp reading is from the onboard unit, I'd want to verify it. I haven't heard of anyone doing it although it may be old info but if you can get ahold of one, use an infrared thermometers to take readings from various places on the compressor.

[bandg]

There has been much discussion of using ice in the cooling water.  Give it a try.

[Fly]

Ray you & I have the same problem. First use ice, I,m using 3 2l plastic soda bottle with water frozen in my freezer to cool the water.
After use just refreeze. Also on your water pump, on the side is a slide that you can adjust the water flow & mine was on lowest flow rate.
That slide is hard to see, for it looks like it is part of the molding & is marked - & +. These two things have helped mine. 

                                                                                    Fly

[Fly]

If the temp reading is from the onboard unit, I'd want to verify it. I haven't heard of anyone doing it although it may be old info but if you can get ahold of one, use an infrared thermometers to take readings from various places on the compressor.

Great Idea I have a infrared thermometer & will check that today & report back. This is starting to be fun. Reminds me of tuning a racing engine.

                                                                          Fly

[Tonykarter]

I too have the infrared temp gun.  Aim and read.  Will freeze a bottle and add it.  I haven't added water wetter yet, even though I have a couple of bottles of it over there in the cabinet.  Will do that too.  Ask me how many times I have burned my forearm on the stainless pipe reaching over the unit to open the primary air bleed.   You'd think after once I would learn. 

[Tonykarter]

Has anyone prechilled the head by circulating the ice water through it for a few minutes before starting the pump, or is that a no-no?  If okay, how low would be okay to pre-chill with an eye towards preventing damage to the head due to thermal contraction shrinking clearances?

[Fly]

Dam Son your as paranoid as I,m 

                                Fly
                     

[bandg]

Pre chilling should not hurt anything but I don't think you would gain much at all as the heat generated would eliminate that quickly.  Lots of heat from these small compressors and you need a constant supply of cold water flowing to keep them cool.  I fill my cooling container with ice cubes and cover with water.  As it melts I scoop some water out and add more ice cubes.  This has worked well for me.

[elguapo99]

I've tried ice cubes and ice packs. The ice cubes keep the temperature about 10 deg C cooler than the ice packs. I empty the entire ice cube container from my refrigerator's freezer in a 5 gal bucket and fill with cold water. It keeps my temps around 45 C when filling my SCBA tanks.

[Tonykarter]

Dam Son your as paranoid as I,m

  Yep.  Probably more paranoid than you!  I'm an insurance agent.  I get paid to be paranoid.  And I am d@mn good at it!

[tracker1955]

Kinda late here but if you have a dedicated circuit for a washing machine it should be a 20 amp circuit. The compressor should be ok up to 65c before becoming too hot, can use ice to help keep it cool. Main problem I hear on Vevor compressors is that no one can source seals for the second stage piston.