Stupid Simple Question about Lube Cube

borges1

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I'd like to get my new lube cube working. This weekend i opened it up and realized i've got some basic knowledge gaps. I called SST when i ordered it and spoke to them (very nice, helpful, and i appreciated they took the time). Ill call them back if i cant figure it out here. They made a custom package for me with two lube cubes and two 120v solenoids so that i could, in theory, turn on either single sprayer at once. But..... once i got to looking at the thing it appears that two solenoids will not make this work.

From what i see pressurized air enters the reservoir on one end; i assume this regulated air feed end is where a single solenoid is intended to be mounted. On the output end of the reservoir are FOUR outputs: two from the top of the tank (air) and two have leads to the bottom of the tank (fluid). A dual line runs to the lube cube sprayer for each sprayer. It appears to me air in the reservoir both passes through to the sprayer, and pressurizes the tank, forcing fluid to the sprayer. In the sprayer head these are mixed and expelled. I assume the design required separate fluid and air lines before the head, otherwise it would be a single line. If i mount a solenoid on just one of each of the dual lines as they exit the tank air pressure will still force air or lube (whichever i don't put the solenoid on) no matter what right? Im not missing something am i? So it seems like with two solenoids there is no way to make each sprayer head independently operable. Right? how could i do what i want? four solenoids? seems silly.

If anyone has a nice neat job of a similar lube cube setup installed id appreciate seeing that.

Also this is my first solenoid adventure. It looks like a simple device, but they stay energized to stay open at the designed voltage right? so switches need to be single pole 120v. Would it be better to run a relay? or just use line voltage to the controls and back to the solenoid? Im tryign to learn the machine control stuff too.
 
Watching . Only because I have a solenoid bank I'm scrapping .
 
Your understanding is correct. I put my solenoid (not the one that came with the 'cube) on the air inlet. You *could* put them on the fluid lines to each 'cube, but there'd still be air going through (which is probably desirable, if you cut the air to the sides individually you'll get one pressure when you use one 'cube and roughly half that when you turn on the second. It's pretty sensitive to pressure changes as is, I don't think I'd want to run two. If I did, I'd probably go with two reservoirs, one per 'cube and switch the incoming air. At least then you shouldn't see a difference between running one or two.

Pro tip: mount the reservoir just a hair below the level of the point of use. If it's too low, fluid will siphon back to the reservoir and then you'll have to wait for it to crawl back up the tube when you turn it on again. Put it too high and it'll start a siphon...

Good luck!

GsT
 
Pro tip: mount the reservoir just a hair below the level of the point of use. If it's too low, fluid will siphon back to the reservoir and then you'll have to wait for it to crawl back up the tube when you turn it on again. Put it too high and it'll start a siphon...
Thanks,
that was sort of what i thought. Bummer. Im space limited, so two reservoirs is sort of a pain. Guess Ill call SST tomorrow and get just the single head output. In regard to your tip above, will the check valves not prevent the backflow? My kit came with two brass check valves i assume go on the fluid half of the dual lines.
 
Watching . Only because I have a solenoid bank I'm scrapping .Don't know if this would work . 120V Mac valves . Going to the dump .
 

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I honestly don't know what im looking at. Is it a small array of 120v solenoids that could work with air or fluid? If you think they might help me get somewhere on this project i'm happy to more than pay scrap and shipping. Can they be separated? i've got other projects i haven't delved into involving air control.
 
Used with air on one of our lines they pulled out . They can be separated . If you do separate them , you would need end caps to use them . I'll look out in the truck to see what else is there . These were headed to the dump this weekend ! :grin: I know I have a lot of hose for them , but may have more banks etc . If you can use them , they're yours for shipping only as they were headed out to their burial grounds anyways .

You could leave this as is and block the unused ports also . Oh yeah . They are 120V .
 
Thanks,
that was sort of what i thought. Bummer. Im space limited, so two reservoirs is sort of a pain. Guess Ill call SST tomorrow and get just the single head output. In regard to your tip above, will the check valves not prevent the backflow? My kit came with two brass check valves i assume go on the fluid half of the dual lines.
The brass check valve I got was less than worthless. Air could get through it, but the siphon system isn't strong enough to pull fluid through it. It might work if you turned the pressure way up, but that kind of defeats the point of the system, imo. I thought about making some flutter valves, but decided I'd live without.

GsT
 
Huh, i have a bunch of cheap plastic check valves i use on my spray guns. guess it will be an experiment to see if any work.
 
Huh, i have a bunch of cheap plastic check valves i use on my spray guns. guess it will be an experiment to see if any work.
I think they'll have to open at pretty low pressure. If you find one that works - let me know!

GsT
 
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