Tools, Sharpening and Power Machinery - Help for Powerex/Campbell Hausfeld Compressor

Hi there, been searching the internet and reading this forum to no avail trying to find some information, and hoping someone out there may know the answer.

I acquired for free a Powerex (but also says Campbell Hausfeld on it) CS5106V compressor.

It didn't have a motor, pressure switch, or any plumbing for the switch or either unloader (head or line between head and tank). Evidently this thing was in a shop and had a 5HP 3-Phase motor with magnetic started hooked up, and the controls were on a wall panel that didn't move when the compressor did....

I has a 2 cylinder aluminum, single stage, oil lubed compressor, and a 60 gal tank with an ASME MAWP rating of 200psi. The tank has a MFG date of 1988.

I "borrowed" the 56 frame 5HP motor off my table saw, the pressure release valve, and the 80-100 psi pressure switch of my direct drive compressor and fired this thing up just for the heck of it.

The unit works fine (compresses air to at least 100 psi), check valve holds and doesn't leak, etc. Sounds good, (no knocks, or bearing noises)

CH was able to send me a parts diagram and PN list, but no specifications or an actual manual was available (or so the rep said).
But all the parts I'm missing from the parts diagram, are obsolete and no longer available. Which leads me to the following questions:

My questions are:
1) What RPM should this pump be run at (to help me choose pulley size on motor)? I do know this is a 5HP pump.
2) What's the CFM on this pump?
3) While the tank has a 200psi rating, what are the normal working pressures for this pump? To help decide which pressure switch settings to use.
4) This unit also has head unloaders. This is the first compressor I've ever used that's had them. From reading and researching I know I need a pilot valve to open and pressurize them when I want to "idle" or unload the compressor without stopping the motor. Does my pilot valve need to have the exact same settings as my pressure switch? My intuition tells me that the pilot valve should open and actuate the head unloaders before the pressure switch shuts down the pump (if the valve for continuous run is open, allowing the pilot valve to be in operation).

Here's two pictures of the pump that I took.
Front view (with fan shroud removed for better view)
http://farm3.static.flickr.com/2672/3994008966_d82b0c09a8.jpg
(yes, the unloader line is not hooked up, but I didn't test run it that way....)



Side View
http://farm3.static.flickr.com/2631/3993248519_8e7de1d784.jpg

Thanks for any information that anyone may be able to provide.

I'd like to know what I've got before I spend any time or money on it.

Thanks,
Brian

It appears that what you have is a specialty compressor unit that was originally designed for building controls or medical use.
The pump appears to be something that is exclusive to that brand.

It is unlikely that you would want to pay for original parts to get it operational and the pictures do not show exactly how the lines from the head were connected.
Did you just block these lines to test it?
This type of compressor would normally turn at about 1100 rpm for its rated capacity.
If it had a 5 hp 3 phase motor you would need a 5 hp, 1750 rpm industrial motor.
Your saw motor is likely 3600 rpm and if so is not a true 5 hp.

Honestly, if you were to have to buy a 5hp industrial rated motor you could likely get a Campbell Hausfeld 5 hp belt drive compressor for almost the same money as that motor.
If you were determined to get this thing running and don't mind paying to do so then post some pics of the connections so we can see how it all went together.
If it had cylinder unloading you could likely change it to a bleeder pressure switch by installing a check valve on the compressor discharge line.

Hopefully you have the plastic shroud as it is needed to keep the pump cool and someone's fingers from being detached from the hand!