Liberty electrial schematic

chuckd · September 14, 2016, 11:58:05 AM

Back to this board after a couple of years absence. Had a child that needed a home and care so bus was a low priority. Now after two years of sitting, trying to bring it to life. The Prevost side is happy, the Liberty side not so much. I have a 1979 35 foot Liberty Conversion Prevost. Does anyone with a year close to mine have a overall ee schematic. Going a bit nuts trying to figure things out.

Thanks

Chuck
Stillwater Mn
1979 35 Prevost

Gerry H · September 14, 2016, 01:33:47 PM

Chuck: What exactly are you trying to deal with electrically? You should be able to download a schematic through Prevost for the OEM stuff, not sure about the Liberty part, need more info. Gerry H (Forest Lake, MN)

Jon · September 14, 2016, 04:01:25 PM

Chuck,

As a 26 year owner of 3 different Liberty coaches I can tell you the designs of the systems change. That's the bad news. The good news is that vintage of Liberty conversion is likely very basic so you can get help from a lot of people.

Liberty did not have schematics for owners of that vintage and they do not provide them now so the best you can hope for is to ask specific questions and I'll bet we can get you answers.

bigred · September 14, 2016, 04:36:14 PM

Does yours have the touch switches that work through a central computer??

Jon · September 15, 2016, 02:52:16 AM

I have had the three generations so the answer is my current one has Crestron and PLCs, but the first one was switches, relays, fuses and circuit breakers.

chuckd · September 15, 2016, 01:40:38 PM

Mine definitely is the switch, relay, fuse, and circuit breaker era. DC side, no idea where the dc fuses are. Any thoughts about where to look? AC circuit breakers are right next to the driver. Presently 2 group d batteries provide house power, they are divided port and starboard. No idea why. I want to add two more group d and have them serve the whole coach. Any issues in doing that?

Presently have a converter, which is not getting power, and a small rotary inverter, which I want to replace with perhaps a 24 volt inverter charger. Step down the coach load to 12volt. Maybe no,t I have a 12 volt alternator now, may just keep the start and house batteries at different voltages. I think the reason I am not getting power to the converter is a rusted out circuit breaker. Have any others changed out the circa 1979 breaker box. I think it is a task I would like to avoid but can't.

Prevost side is well documented. Going to a different but maybe related problem in a new post.

Chuckd
Stillwater Mn
1979 Prevost

Jon · September 15, 2016, 02:27:01 PM

Chuck,

Your 79 and my 87 were likely two different animals, but some Liberty stuff might be similar.

My DC fuses and CBs were in 3 panels, one in the bedroom and I believe one in the bath and the third up front somewhere. They were located behind drawers or a hinged panel. That coach has 6 group 27 house batteries split into 2 sets of 12 volt wired in parallel.

The 120V panel was near the kitchen and the AC wires were stranded marine grade with three wires (black, white, green) in a plastic outer jacket and the wires were run front to rear in wire and air conditioning chases along the floor. All AC circuits were protected with the circuit breakers in the panel. That coach had two converters and each was on its own 120VAC circuit. The inverter was not a motor driven type, but a 2000W inverter (no charger).

bigred · September 15, 2016, 06:13:38 PM

On my CC ,those high voltage DC fuses are located in the rear of the front bay ,where all the generator controls,air filter ,battery and aux air compressor is .

bigred · September 15, 2016, 06:15:38 PM

On my CC ,those high voltage DC fuses are located in the rear of the front bay ,where all the generator controls,air filter ,battery and aux air compressor is .