Quincy 325 ROC 1 Info

[Wigz1981]

Hello, recently picked up a 60 gal horizontal Gilbarco compressor. Being a rebranded Quincy it should be too hard to find info. Im fairly certain it have a 325 ROC 1 going off of the label plate. I cant find a thing for that ROC. It also came with a Wagner 3hp Repulsion Induction motor. 1750rpm type RA frame 225. Bought off marketplace and the guy delivered it right to the spot in the garage i wanted. Im glad because its ridiculously heavy. Its in working condition but i know at some point im going to need parts. Just curious if anyone has some documentation for this ROC. Ive seen a few people with it that contacted Quincy and couldnt get any docs for it. Also has anyone found a source of brushes for the wagner? Pretty sure i dont need them yet but that day will cone up eventually.

 

[Speed-Racer]

Can you share pics of the entire compresso? Gilbarco sold gas pumps and other rebranded equipment to garages. Your ROC 1 is likely the same as Quincy.

what date is on the air tank?

 

[oldmachinenut]

My Quincy 310 roc14 (60 gallon vertical) is stamped Gilbarco on a brass plate attached to the pump/motor mounting plate.
The tank is ASME stamped 1947, I have had it pressurized and in use since 1981.

 

[Wigz1981]

Still looking for the date on the tank bit heres a couple of pics

 

[Wigz1981]

What im trying to find is a ROC 1-5 tech manual. The lowest i found is 6 in the Quincy library. A google search is bringing up pretty much nothing on an ROC 1. Wanted to get the required reading before i need to start worrying about picking up a tune up kit. Will probably swap the motor before i worry about that. Currently have a Wagner 3HP RI single phase. Considering picking up a Baldor 5hp 3 phase , 1800rpm off of marketplace for $150. Looking to get more cfm (for painting). I’m assuming with the 3hp im looking at 10-12cfm. Would like to get as close to 20 as i can. Will run the 3 phase off of a VFD since itll be the only item in the garage running off 3 phase. The only other 220 items are an outlet for a welder once i get around to getting one and a diy composites/powdercoating oven.

 

[redmondjp]

At 900rpm with a true 5HP motor, you can get a bit over 18ACFM at 175psi, at least with the modern-day 325 pump. Likely a bit more if you are running at a lower pressure.

 

[TuckerSailor]

What im trying to find is a ROC 1-5 tech manual. The lowest i found is 6 in the Quincy library. A google search is bringing up pretty much nothing on an ROC 1. Wanted to get the required reading before i need to start worrying about picking up a tune up kit. Will probably swap the motor before i worry about that. Currently have a Wagner 3HP RI single phase. Considering picking up a Baldor 5hp 3 phase , 1800rpm off of marketplace for $150. Looking to get more cfm (for painting). I’m assuming with the 3hp im looking at 10-12cfm. Would like to get as close to 20 as i can. Will run the 3 phase off of a VFD since itll be the only item in the garage running off 3 phase. The only other 220 items are an outlet for a welder once i get around to getting one and a diy composites/powdercoating oven.

Won't using the vfd to get 3 phase power lower the hp of the 5 horse motor, phase converters except rotary do.

 

[Wigz1981]

From what i found i just have to go with a larger vfd. With the fla being 14.3 i need to purchase a 30a vfd. One rated for 7.5 or 10hp.

 

[u3b3rg33k]

Won't using the vfd to get 3 phase power lower the hp of the 5 horse motor, phase converters except rotary do.

no. you get rated power out of a motor running on a VFD. they may list a different SF for VFD operation, but most service factor issues (repeated starts) aren't an issue with a properly set up VFD.

From what i found i just have to go with a larger vfd. With the fla being 14.3 i need to purchase a 30a vfd. One rated for 7.5 or 10hp.

for heavy duty use (which a compressor would qualify), the "rule of thumb" is to size up by 1.73% (√3). since you can't typically find a VFD that size, the easy thing to do is double it.

two primary reasons:
1: you're asking 4 diodes to do the work of 6 for the same power rating (inlet amps)
2: single phase has more ripple than 3ø, so oversizing helps keep that in check.

the output stage of the VFD has no idea what's going on re: inlet phase. if the DC bus is happy, you're good.

 

[Wigz1981]

Starting to get some replacement parts for it. Still havent found any diagram or manual for this ROC. Ive found only one tune up kit for it from Pacific Air Compressors. Im assuming that i have a leaky pressure switch. Its an old D Square 9013ASG. Its got some surface rust underneath it. Debating on finding a rebuild kit for $15 or swapping it out. I have a VFD coming for the new motor. Its a 7.5hp. Going to start my 220 install for it this week once i get around to it. I have a new construction home with a 3 year warranty for electrical so im going to call up the original contractor to see if i can just have him do the final inspection and if that will keep the warranty in tact. If it doesnt im not too worried. Ive already has an issue with the electrical in the garage and fixed it myself (im an electrician in the Navy). The wife is worried that im going to burn the house down, lol. She’s seen what i do at work and should realize that wiring a 220 circuit for a compressor is far easier than what i normally have to deal with. Anyways just seeing if i should bother repairing the pressure switch or swap it and what some recommended switches for our 325 would be

 

[86turbodsl]

A ROC1 is *OLD*. I doubt they changed that much over the years. Use the ROC6 manual if you have one.

 

[Jpkimmel]

I thought I had an old one with ROC 5 built 1932. ROC 1 is impressive.

 

[PirateTurner]

Here's the IPB for 325 ROC 7 and the front matter lists the mods for the preceding ROCs. Maybe this will help.

If you haven't, call Pacific Air and talk to someone. They have more info than shows on the webpage.

I do have manuals, IPBs for ROC 10, 11, 14, 17, and 18 if you think they might help.

 

[Sleeper]

You clearly won’t burn the house down. Biggest issue is that you might void you homeowners insurance if the house does burn down for any other reason but if you can get it signed off on then you’re probably good to go.

I’m no sparky so don’t depend on my recollections but I think I remember that when you wire a VFD you have to size the run for 125% of the maximum rating of the VFD not the motor it’s powering. Might not be a big deal at 7.5hp but I think it’s caught some people out using 20-25hp units.

Cool compressor, post a video when it’s up and running.

 

[u3b3rg33k]

You clearly won’t burn the house down. Biggest issue is that you might void you homeowners insurance if the house does burn down for any other reason but if you can get it signed off on then you’re probably good to go.

I’m no sparky so don’t depend on my recollections but I think I remember that when you wire a VFD you have to size the run for 125% of the maximum rating of the VFD not the motor it’s powering. Might not be a big deal at 7.5hp but I think it’s caught some people out using 20-25hp units.

Cool compressor, post a video when it’s up and running.

the biggest breaker in QO is a 125A, which would give you 24kW continuous/32hp. assuming a 50% de-rate for 1ø (per Hitachi's chart) that's a 60HP VFD. P1-02290-LFUF

 

[u3b3rg33k]

From what i found i just have to go with a larger vfd. With the fla being 14.3 i need to purchase a 30a vfd. One rated for 7.5 or 10hp.

or you can grab one of these:
intended for 1ø input, disconnect integral, IP66 housing.