Repairing old air compressors

[Craftsman86]

I have been reading through the catalogs of parts on the COndor pressure switches, and I am unsure If I am going to need the following part ot run the line to my new switch.

http://www.homedepot.com/h_d1/N-25e...gId=-1&keyword=pressure+Switch\&storeId=10051

The new style of switch has the unloader valve that connects to the back of the switch with a roll pin. Any idea if these switches come with the valve in the back of them? You can see the unloader on the back in this image, but it is twice the price and I can pick the first one up from Home depot rather than pay for shipping.

Image with unloader
http://www.mastertoolrepair.com/cw210100sj-pressure-switch-kit-p-19921.html
Link to the switches I plan to buy
http://www.homedepot.com/h_d1/N-5yc...gId=-1&keyword=powermate+switch&storeId=10051


I have 2 compressors that I am planning to repair, one of them just needs the switch taken out and a new one installed as it is the same switch. The other compressor requires a switch that is no longer made and needs to be retrofitted to accept the new style. I would prefer to pay $20 each but then I am taking a shot in the dark as to if it comes with everything that I need.

Thanks in advance guys

 

[Craftsman86]

Come on Guys I know someone out there knows about these things.

 

[A_Pmech]

Edit: Nevermind... Didn't understand the question.

 

[RECox286]

If your present switch/unloader ran the compressor at the advertised psi

range of the replacement, then even if you have to do some replumbing,

it "should" do the trick. Without specifications of your compressor systems

it is virtually impossible to steer you in the right direction. " my car has a

noise lately. Is it safe to drive ? "

Uncle Bob

 

[Craftsman86]

If your present switch/unloader ran the compressor at the advertised psi

range of the replacement, then even if you have to do some replumbing,

it "should" do the trick. Without specifications of your compressor systems

it is virtually impossible to steer you in the right direction. " my car has a

noise lately. Is it safe to drive ? "

Uncle Bob

I have a Sanborn 30 gallon stand up and the switch is the exact same as what I am ordering. The other is a vintage Campbell Hausfield that had the following switch. The second picture is where the previous unloader attached. Will the new switch (listed in the Home Depot link) work as a replacement? Will I need to order a new unloader valve with that switch for it to function?

 

[RECox286]

If your Sanborn ran at 155 off, 125 on, and it matches the old switch exactly, then the

switch you intend to use will work fine.

We still know not what the CH compressor limits are. You will want to duplicate the

off/on psi range so that the compressor will work as it did with its' original

switch. Different systems work at different ranges. To be absolutely safe, you could

replace it with a switch that is off 120, on 90 psi. See if you can google the model

number of your CH to give you an idea at what pressures it should stop and start. Also,

if it were mine, I would be looking to R&R the old switch/unloader assy for a completely

new one. (Not trying to reuse the old unloader, if that is what you are trying to do, as

they get dirty, greasy, tired, worn out, and what else can I say ?) Do you have a model

# for the CH system ?

Uncle Bob