I question the quality of those caps. Seems like everyone we installed has gone bad and had to be replaced. I have banned them at our shop!
Thats interesting, I have been using them for years now without any failures. Based off my own personal experience I have to say my recommendation still stands. I would be interested in seeing any hard data you have on the subject though.
Originally Posted by beenthere
For the cost of 2 or 3 of them. You can buy a good supply of caps that will cover you.
And you can alwyas put 2 standard ones together to make the right one, for less then one of those.
Like I was saying, they are definately more expensive than a regular cap, so they shouldn't be replacing your usual stock, but much like an Emerson emergency motor, I think all techs should have some universal replacement parts for situations when the supply house is closed.
Question regarding the MFD of a capacitor. A newer Armstrong unit 5yrs old mod# scu10a30a-3c had a 35+5 370volt cap and a hard start kit from the factory. The customer stated the cooling stopped one night. Found the Cap bad. I didnt have a 35+5 but had a 45+5 on the truck. I replace it with a 45+5 370v with out the hard start kit and it fired right up. Today i returned with the 35+5 370 cap and put it in place of the 45+5 370 and it didnt work. Is that because i removed the hard start kit?
I though hard start kits were for low voltages and if the compressor was locked up it would help break it loose. So why would it come installed from the factory? Does any of this make sense?
What does this mean?
The 45, through the phase off enough it could start.
The 35 doesn't
Why did the manufacture install a hard start from the factory?
Yea i was thinking the same thing myself, and maybe the manufacture is using a starting aid because they are using a cheapo compressor, or one thats undersized h/p rating for the system size (save money on overstock)? and from some other posts in this thread-- as far as hard start kits you can use them on brand new equipment for a compressor that is having trouble starting for whatever reason it may be (high starting head due to vertical lift, brown out power grids during peak service times, ect.)